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A System And Method For Providing A Torque/Power Assist In A Vehicle

Abstract: ABSTRACT A SYSTEM AND METHOD FOR PROVIDING A TORQUE/POWER ASSIST IN A VEHICLE The present invention relates to a system (100, 200) and a method (300, 400) for providing a torque/power assist in a vehicle (10). In an embodiment, the system (200) comprises a control unit (108, 208) configured to: receive, upon determination of rate of change of throttle opening of the vehicle (10) being greater than a pre-defined value, a real time speed of the vehicle (10) and real time rpm of the vehicle (10) and simultaneously start a trigger for providing torque/power assist; select a first pre-defined time period corresponding to the real time speed and the real time rpm of the vehicle (10) from a table or a curve, and instruct, upon determination of the time elapsed since the start of the trigger being greater than the first pre-defined time-period, a torque/power assist unit (206) to provide torque/power after expiration of a second pre-defined time period. Reference Figure 2

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Notices, Deadlines & Correspondence

Patent Information

Application #
Filing Date
17 January 2024
Publication Number
29/2025
Publication Type
INA
Invention Field
MECHANICAL ENGINEERING
Status
Email
Parent Application

Applicants

TVS MOTOR COMPANY LIMITED
“Chaitanya” No.12 Khader Nawaz Khan Road, Nungambakkam Chennai Tamil Nadu - 600006 India

Inventors

1. VEDHANAYAGAM JAYAJOTHI JOHNSON
TVS Motor Company Limited “Chaitanya” No 12 Khader Nawaz Khan Road, Nungambakkam Chennai Tamil Nadu 600006 India
2. MANICKAM MURUGESAN
TVS Motor Company Limited “Chaitanya” No 12 Khader Nawaz Khan Road, Nungambakkam Chennai Tamil Nadu 600006 India
3. PALANI SHUNMUGASUNDARAM
TVS Motor Company Limited “Chaitanya” No 12 Khader Nawaz Khan Road, Nungambakkam Chennai Tamil Nadu 600006 India
4. PRAVEENKUMAR ARUNKUMAR
TVS Motor Company Limited “Chaitanya” No 12 Khader Nawaz Khan Road, Nungambakkam Chennai Tamil Nadu 600006 India
5. KARTHICK NATESAMOORTHY
TVS Motor Company Limited “Chaitanya” No 12 Khader Nawaz Khan Road, Nungambakkam Chennai Tamil Nadu 600006 India
6. BALAJI VAIDYANATHAN
TVS Motor Company Limited “Chaitanya” No 12 Khader Nawaz Khan Road, Nungambakkam Chennai Tamil Nadu 600006 India

Specification

Description:FIELD OF THE INVENTION
[001] The present invention relates to a vehicle. More particularly, the present invention relates to a system and method for providing a torque/power assist in the vehicle.

BACKGROUND OF THE INVENTION
[002] Typically, in a vehicle one or more power sources are provided into a power train, this tends to introduce the possibility of selecting the power source as per the load requirements of a user. The vehicle which has one or more than two or more power sources requires the system to manage the transfer of power from one power source to another. The more number power source in the vehicle, a greater number of ridding modes are provided in the vehicle.
[003] Conventionally, the user tends to feel the abnormal jerk when the vehicle tends to transfer from normal running mode to power assist mode. This abnormal condition occurs when the power is taken from one or more power sources at the same time.
[004] Further, to provide the better user experience the power assist mode is provided which uses the two or more power inputs which transmit the energy to the power train but for better user experience the Critical parameters such as transmission losses and clutch slip are not being considered during transition of the vehicle from normal mode to the power mode which tends to reduce the efficiency of the system (like low battery life, system failures, electronic components failures etc.).
[005] To overcome such disadvantages, prior arts disclose use of dedicated battery for providing the additional input to the power train at the time of power assist mode. However, use of dedicated battery increases overall cost, weight, dynamics and layout of the vehicle which is undesirable. Also, the sudden shift from normal mode to power assist mode may hamper battery life.
[006] In view of the foregoing, there is a need to overcome at least the above mentioned disadvantages of the prior art.

SUMMARY OF THE INVENTION
[007] In one aspect of the invention, a system for providing a torque/power assist in a vehicle is disclosed. The system comprises one or more first sensors, one or more second sensors and a control unit. The one or more first sensors are configured to detect a rate of change of throttle opening of the vehicle. The one or more second sensors are configured to detect a state of clutch of the vehicle. The control unit is communicatively coupled to the one or more first sensors and the one or more second sensors. The control unit is configured to compare the rate of change of throttle opening with a pre-defined value. Upon determination of the rate of change of the throttle opening being greater than the pre-defined value, the control unit is configured to check a state of the clutch. Upon determination of the clutch being in a disengaged state, the control unit is configured to perform a first set of pre-defined operations and upon determination of the clutch being in an engaged state, the control unit is configured to perform a second set of pre-defined operations. The first set of pre-defined operation comprises comparing, upon determination of the clutch being in the disengaged state, a time period elapsed after determination of the rate of throttle opening being greater than the pre-defined value with a first pre-defined time period. Upon determination of the time period elapsed being less than the first pre-defined time period and clutch being engaged during the elapsed time period, instructing a torque/power assist unit to provide torque/power to one or more pre-defined components of the vehicle after an expiration of a second pre-defined time period. However, upon determination of the time period elapsed being greater than the first pre-defined time period and clutch being in a disengaged state during the elapsed time period, instruct the torque/power assist unit to provide the torque/power assist to one or more pre-defined components of the vehicle after expiration of the second pre-defined time period. The second set of pre-defined operation comprises instructing, upon determination of the clutch being in an engaged state, a torque/power assist unit to provide torque/power assist to one or more pre-defined components of the vehicle after expiration of the second pre-defined time period. In other words, torque/power assist is provided to the vehicle after a delay i.e. after expiration of the second pre-defined time period.
[008] In a non-limiting example, the one or more first sensors are throttle position sensors and the one or more second sensors are clutch position sensors. In a non-limiting example, the second pre-defined time period ranges from 100 milli second to 5000 milli seconds. In a non-limiting example, the pre-defined value is 10 percent in 50 milliseconds. In a non-limiting example, the vehicle is a manual transmission vehicle. In a non-limiting example, the torque power/assist unit is an integrated starter generator. In a non-limiting example, the one or more pre-defined components include crankshaft of the internal combustion engine. In a non-limiting example, the first pre-defined time period ranges from 00 milliseconds to 5 sec.
[009] In another aspect of the invention, another system for providing a torque assist in a vehicle is provided. The system comprises one or more first sensors, one or more second sensors, one or more third sensors and a control unit. The one or more first sensors are configured to detect a rate of change of throttle opening of the vehicle. The one or more second sensors are configured to detect rpm of the vehicle. The one or more third sensors are configured to detect the speed of the vehicle. The control unit is communicatively coupled to the one or more first sensors, the one or more second sensors and the one or more third sensors. The control unit is configured to compare the rate of change of throttle opening with a pre-defined value. Upon determination of the rate of change of throttle opening being greater than the pre-defined value, the control unit is configured to receive a real time speed of the vehicle form the one or more second sensors and the real time rpm of the vehicle from the one or more third sensors and simultaneously start a trigger for providing torque/power assist. The control unit is configured to start a first pre-defined time period corresponding to the real time speed and real time rpm of the vehicle from a table or a curve. The table or curve is stored in the control unit and have plurality of first pre-defined time period mapped corresponding to plurality of speed and rpm of the vehicle. Upon determination of the time elapsed since the start of trigger being greater than the first pre-defined time period, the control unit instructs a torque/power assist unit to provide torque to one or more pre-defined components of the vehicle after expiration of a second pre-defined time period.
[010] In a non-limiting example, the one or more first sensors are throttle position sensors. The one or more second sensors are selected from a group including variable reluctance sensor, hall effect sensor and magneto resistive sensor. The one or more third sensors are tachometers.
[011] In a non-limiting example, the vehicle is a manual transmission vehicle or an automatic transmission vehicle.
[012] In a non-limiting example, the pre-defined value being 10 percent in 50 milli seconds.
[013] In a non-limiting example, the second pre-defined time period ranges from 200 milli seconds to 5000 milli seconds.
[014] In a non-limiting example, the torque/power assist unit is an integrated starter generator.
[015] In a non-limiting example, the one or more pre-defined components includes crankshaft of the internal combustion engine and electric motor.
[016] In a non-limiting example, first pre-defined time period is in a range of 0 milliseconds to 5 sec.
[017] In yet another aspect of the present invention, a method for providing a torque/power assist in a vehicle is provided. The method comprises a step detecting a rate of change of throttle opening of the vehicle. The step of detecting the rate of change of throttle opening is performed by one or more first sensors. The method further comprises a step of comparing the rate of change of throttle opening with a pre-defined value. The step of comparing the rate of change of throttle opening with a pre-defined value is performed by a control unit. Upon determination of the rate of change of throttle opening being greater than the pre-defined value, the method comprises receiving a state of the clutch. The step of receiving the state of clutch is performed by the control unit. The one or more second sensors are configured to detect the state of the clutch. The one or more second sensors are communicatively coupled to the control unit and provide the state of the clutch to the control unit. The method further comprises a step of performing a first set of pre-defined operations upon determination of the clutch being in a disengaged state and a second set of pre-defined operations upon determination of the clutch being in an engaged state. The first set of pre-defined operation comprises comparing, upon determination of the clutch being in the disengaged state, a time period elapsed after determination of the rate of change of throttle opening being greater than the pre-defined value with a first pre-defined time period. Upon determination of the time period elapsed being less than the first pre-defined time period and engagement of clutch during the elapsed time period, instructing the torque/power assist unit to provide torque/power to one or more pre-defined components to the vehicle after expiration of a second pre-defined time period. However, upon determination of the time period elapsed being greater than the first pre-defined time period and clutch being in a disengaged state during the elapsed time period, instruct the torque/power assist unit to provide the torque/power assist to one or more pre-defined components of the vehicle after expiration of the second pre-defined time period. The second set of pre-defined operation comprises instructing, upon determination of the clutch being in an engaged state, a torque/power assist unit to provide torque/power assist to one or more pre-defined components of the vehicle after expiration of the second pre-defined time period.
[018] In a non-limiting example, the one or more first sensors are throttle position sensors and the one or more second sensors are clutch position sensors. In a non-limiting example, the second pre-defined time period ranges from 100 milli second to 5000 milli seconds. In a non-limiting example, the pre-defined value is 10 percent in 50 milliseconds. In a non-limiting example, the vehicle is a manual transmission vehicle. In a non-limiting example, the torque power/assist unit is an integrated starter generator. In a non-limiting example, the one or more pre-defined components include crankshaft of the internal combustion engine. In a non-limiting example, the first pre-defined time period ranges from 0 milliseconds to 5 sec.
[019] In yet another aspect of the present invention, a method for providing a torque assist in a vehicle is disclosed. The method comprises a step of detecting a rate of change of throttle opening. The step of detecting a rate of change of throttle opening is performed by one or more first sensors. The method further comprises a step of comparing the rate of change of throttle opening with a pre-defined value. The step of comparing is performed by a control unit. The control unit is in communication with the one or more first sensors. Upon determination of the rate of change of throttle opening being greater than the pre-defined value, the method further comprises a step of receiving a real time speed of the vehicle from one or more second sensors and real time rpm of the vehicle from one or more third sensors and simultaneously start a trigger for providing torque/power assist. The step of receiving real time speed and real time rpm of the vehicle is performed by the control unit. The step of starting a trigger is also performed by the control unit. The method further comprises a step of selecting a first pre-defined time period corresponding to the real time speed and the real time rpm of the vehicle from a table or a curve. The step of selecting is performed by the control unit. The table or curve is stored in the control unit and have a plurality of first pre-defined time-periods mapped corresponding to the plurality of speed and rpm of the vehicle. The method further comprises a step of instructing, upon determination of the time elapsed since the start of the trigger being greater than the first pre-defined time-period, a torque/power assist unit to provide torque/power to one or more pre-defined components of the vehicle after expiration of a second pre-defined time period.
[020] In a non-limiting example, the one or more first sensors are throttle position sensors. The one or more second sensors are selected from a group including variable reluctance sensor, hall effect sensor and magneto resistive sensor. The one or more third sensors are tachometers.
[021] In a non-limiting example, the vehicle is a manual transmission vehicle or an automatic transmission vehicle.
[022] In a non-limiting example, the pre-defined value being 10 percent in 50 milli seconds.
[023] In a non-limiting example, the second pre-defined time period ranges from 200 milli seconds to 5000 milli seconds.
[024] In a non-limiting example, the torque/power assist unit is an integrated starter generator.
[025] In a non-limiting example, the one or more pre-defined components includes crankshaft of the internal combustion engine and electric motor.
[026] In a non-limiting example, first pre-defined time period is in a range of 0 milliseconds to 5 sec.

BRIEF DESCRIPTION OF THE DRAWINGS
[027] Reference will be made to embodiments of the invention, examples of which may be illustrated in accompanying figures. These figures are intended to be illustrative, not limiting. Although the invention is generally described in context of these embodiments, it should be understood that it is not intended to limit the scope of the invention to these particular embodiments.
Figure 1 is a block diagram illustrating a system for providing a torque/power assist in a vehicle, in accordance with an embodiment of the present invention.
Figure 2 is a block diagram illustrating a system for providing a torque/power assist in a vehicle, in accordance with another embodiment of the present invention.
Figure 3a and 3b is a flow chart illustrating a method for providing a torque/power assist in a vehicle, in accordance with another embodiment of the present invention.
Figure 4a and 4b is a flow chart illustrating a method for providing a torque/power assist in a vehicle, in accordance with another embodiment of the present invention.
Figure 5 is a block diagram illustrating control being connected with one or more units of a vehicle, in accordance with an embodiment of the present invention.
Figure 6a, 6b, 6c and 6d is a graphical representation of engine speed, throttle opening, assist without delay and assist with delay with respect to time period, in accordance with an embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION
[028] Various features and embodiments of the present invention here will be discernible from the following further description thereof, set out hereunder.
[029] For the purpose of the present invention, the term “vehicle” comprises any vehicle provided with a torque/power assist unit such as an integrated starter generator such as, not being limited to, scooters, motorcycles, rickshaws, cars, trucks, etc. The term “vehicle” also comprises manual transmission vehicle and automatic transmission vehicle. The term “vehicle” also comprises internal combustion engine vehicle, electric vehicle and hybrid vehicle.
[030] Figure 1 is a block diagram illustrating a system 100 for providing a torque/power assist in a vehicle 10, in accordance with an embodiment of the present invention.
[031] As shown, the system 100 comprises one or more first sensors 102, one or more second sensors 104, a control unit 108 and a torque/power assist unit 106. The one or more first sensors 102, the one or more second sensors 104 and the torque/power assist unit 106 are communicatively coupled to the control unit 108. The one or more first sensors 102 are configured to detect a rate of change of throttle opening in the vehicle 10. The one or more second sensors 104 are configured to detect a state of clutch of the vehicle 10. The torque/power assist unit 106 is configured to provide torque/power assist to one or more pre-defined components of the vehicle 10. The one or more first sensors 102 detect the rate of change of throttle opening in real time and send information indicative of rate of change of throttle opening to the control unit 108. The control unit 108 is configured to compare the rate of change of throttle opening with a pre-defined value. The rate of change of throttle opening being greater than the pre-defined value indicates that the torque/power assist is required to be provided to the vehicle 10.
[032] Upon determination of the rate of change of throttle opening being greater than the pre-defined value, the control unit 108 checks the state of the clutch. The state of the clutch is provided to the control unit 108 by the one or more second sensors 104. Upon determination of the clutch being in a disengaged state, the control unit 108 is configured to perform a first set of pre-defined operations and upon determination of the clutch being in a engaged state, the control unit 108 is configured to perform a second set of pre-defined operations. The first set of pre-defined operations comprises comparing a time period elapsed, after detection of rate of change of throttle opening being greater than the pre-defined value, with a first pre-defined time period. If the clutch of the vehicle 10 is engaged before reaching or expiration of the first pre-defined time period, the control unit 108 instructs the torque/power assist unit 106 to provide torque to the one or more pre-defined components of the vehicle 10 after expiration of a second pre-defined time period. However, if the time period elapsed exceeds the pre-defined value and the clutch is still in a disengaged state, the control unit 108 instructs the torque/power assist unit 106 to provide torque/power assist to one or more pre-defined components after expiration of the second pre-defined time period. The second set of pre-defined operations comprises instructing a torque/power assist unit 106 to provide torque/power to one or more pre-defined components of the vehicle 10 after expiration of the second pre-defined time period.
[033] In a non-limiting example, the one or more first sensors 102 are throttle position sensors and the one or more second sensors 104 are clutch position sensors.
[034] In a non-limiting example, the first pre-defined time period ranges from 0 milliseconds to 5 sec. However, this should not be construed as limiting and other first pre-defined time periods may also be provided based on different parameters of the vehicle 10.
[035] In a non-limiting example, the second pre-defined time period ranges from 100 milli second to 5000 milli seconds. However, this should not be construed as limiting and other delay periods may also be provided based on different parameters of the vehicle 10.
[036] In a non-limiting example, the pre-defined value being 10 percent in 50 milliseconds. In other words, rate of change of throttle opening should be greater than 10 percent in 50 milliseconds. However, this value should not be construed as limiting and other pre-defined values can be set by the manufacturer of the vehicle 10 based on one or more vehicle parameters.
[037] In a non-limiting example, the vehicle 10 is a manual transmission vehicle.
[038] In a non-limiting example, the torque power/assist unit 106 is an integrated starter generator. However, the present invention should not be construed as limiting and other now known or later developed torque/power assist units 106 are well within the scope of the present invention.
[039] In a non-limiting example, the one or more pre-defined components include crankshaft of the internal combustion engine.
[040] Figure 2 is a block diagram illustrating a system 200 for providing a torque/power assist in a vehicle 10, in accordance with another embodiment of the present invention.
[041] As shown, the system 200 comprises one or more first sensors 202, one or more second sensors 204, one or more third sensors 205, a control unit 208 and a torque/ power assist unit 206. The one or more first sensors 202 are configured to detect a rate of change of throttle opening in the vehicle 10. The one or more second sensors 204 are configured to detect revolution per minute (rpm) of the vehicle 10. The one or more third sensors 205 are configured to detect speed of the vehicle 10. The torque/power assist is configured to provide torque/power assist to one or more pre-defined components of the vehicle 10. The control unit 208 is communicatively coupled to the one or more first sensors 202, the one or more second sensors 204, the one or more third sensors 205 and the torque/assist power unit 206. The control unit 208 is configured to compare the rate of change of the throttle opening with a pre-defined value. Upon determination of the rate of change of throttle opening being greater than the pre-defined value, the control unit 208 is configured to receive real time speed of the vehicle 10 from the one or more second sensors (204) and the real time rpm of the vehicle 10 from the one or more third sensors 205 as well as start a trigger for providing torque/power assist.
[042] In the control unit 208 is stored a table or curve, wherein plurality of first pre-defined time periods are mapped or plotted corresponding to different speeds and rpms of the vehicle 10. The control unit 208 identifies the first time period corresponding to the real time speed and rpm of the vehicle 10 as received from the one or more first sensors 202 and the one or more second sensors 204. Upon selection of the first pre-defined time period, the control unit 208 calculates the time period elapsed since the start of the trigger. When the time elapsed since the trigger period exceeds the first pre-defined time period, the control unit 208 instructs the torque/power assist unit 206 to provide torque/power assist to one or more pre-defined components after expiration of the second pre-defined time period.
[043] In a non-limiting example, the one or more first sensors 202 are throttle position sensors. The one or more second sensors 204 are selected from a group including variable reluctance sensor, hall effect sensor and magneto resistive sensor. The one or more third sensors 205 are tachometers.
[044] In a non-limiting example, the vehicle 10 is a manual transmission vehicle or an automatic transmission vehicle.
[045] In a non-limiting example, the pre-defined value being 10 percent in 50 milli seconds. However, this should not be construed as limiting and other values may also be defined by the manufacturer of the vehicle 10.
[046] In a non-limiting example, the first pre-defined time period ranges from 0 milliseconds to 5 sec. However, this should not be construed as limiting and other values may also be defined by the manufacturer of the vehicle 10.
[047] In a non-limiting example, the second pre-defined time period ranges from 200 milli seconds to 5000 milli seconds. However, this should not be construed as limiting and other values may also be defined by the manufacturer of the vehicle 10.
[048] In an embodiment, the torque/power assist unit 206 is an integrated starter generator. However, this should not be construed as limiting and other now known or later developed torque/power assist units 206 are well within the scope of the present invention.
[049] In an embodiment, the one or more pre-defined components includes crankshaft of the internal combustion engine and electric motor.
[050] Figure 3a and Figure 3b is a flow chart illustrating a method 300 for providing a torque/power assist in a vehicle 10, in accordance with yet another embodiment of the present invention.
[051] As shown, at step 301, the method 300 comprises detecting a rate of change of throttle opening of the vehicle 10. The step of detecting is performed by one or more first sensors 102. At step 302, the method 300 comprises a step of comparing the detected value of rate of change of throttle opening with a pre-defined value. The step 302 of comparing is performed by the control unit 208. At step 303, the control unit 208 determines if the rate of change of the throttle opening is greater than the pre-defined value. If the rate of change of the throttle opening is greater than the pre-defined value, the method moves to step 304, else step 302. At step 304, the method comprises the step of receiving a state of clutch from one or more second sensors 104. At step 305, the control unit 108 determines if the clutch is in an engaged state or a disengaged state. If the control unit 108 determines the clutch to be in a dis-engaged state, the method moves to step 306. However, in case the control unit 108 determines the clutch to be in an engaged state, the method moves to step 308. At step 306, the method comprises a step of determining if the time period elapsed after determining the rate of change of throttle opening being greater than the pre-defined value is greater than a first pre-defined time period. The step 306 is performed by the control unit 108. If the control unit 108 determines that the time period elapsed is lesser than a first pre-defined time period, the method 300 moves to step 307. However, if the control unit 108 determines that the time period elapsed is greater than the first pre-defined time period, the method (300) moves to step 308. At step 307, the method (300) comprises a step of determining whether the clutch is in an engaged state. If the clutch is engaged before expiration of the first pre-defined time period, the method 300 moves to step 308. If the clutch is not engaged before the expiration of the first time period, the method (300) moves to step 307. The step 307 is performed by the control unit 108. At step 308, the method (300) comprises instructing the torque/power assist unit 106 to provide torque/power assist to one or more pre-defined components of the vehicle 10 after expiration of a second pre-defined time period.
[052] In a non-limiting example, the one or more first sensors 102 are throttle position sensors and the one or more second sensors 104 are clutch position sensors.
[053] In a non-limiting example, the first pre-defined time period ranges from 0 milliseconds to 5 sec. However, this should not be construed as limiting and other first pre-defined time period may also be provided based on different parameters of the vehicle 10.
[054] In a non-limiting example, the second pre-defined time period ranges from 100 milli second to 5000 milli seconds. However, this should not be construed as limiting and other delay periods may also be provided based on different parameters of the vehicle 10.
[055] In a non-limiting example, the pre-defined value being 10 percent in 50 milliseconds. In other words, rate of change of throttle opening should be greater than 10 percent in 50 milliseconds. However, this value should not be construed as limiting and other pre-defined values can be set by the manufacturer of the vehicle 10 based on one or more vehicle parameters.
[056] In a non-limiting example, the vehicle 10 is a manual transmission vehicle.
[057] In a non-limiting example, the torque power/assist unit 106 is an integrated starter generator. However, the present invention should not be construed as limiting and other now known or later developed torque/power assist unit 106 are well within the scope of the present invention.
[058] In a non-limiting example, the one or more pre-defined components include crankshaft of the internal combustion engine.
[059] Figure 4a and Figure 4b is a flow chart illustrating a method 400 for providing a torque/power assist in a vehicle 10, in accordance with yet another embodiment of the present invention.
[060] As shown, at step 401, the method 400 comprises detecting a rate of change of throttle opening. The step 401 is performed by one or more first sensors 202. At step 402, the method 400 comprises comparing the rate of change of the throttle opening with a pre-defined value. The step 402 is performed by a control unit 208. The control unit 208 is communicatively coupled to the one or more first sensors 202. At step 403, the control unit 208 determines if the rate of change of throttle opening is greater than a pre-defined value. If the control unit 208 determines that the rate of change of throttle opening is greater than the pre-defined value, the method 400 moves to step 404, else 402. At step 404, the method 400 comprises receiving a real time speed of the vehicle 10 from one or more second sensors 204 and a real time rpm of the vehicle 10 from one or more third sensors 205 and simultaneously start a trigger for providing torque/power assist. At step 405, the method 400 comprises selecting a first pre-defined time period corresponding to the real time speed and the real time rpm of the vehicle 10 from a look up table or a curve stored in the control unit 208. In the look up table, a plurality of the first pre-defined time periods are mapped corresponding to different rpms and speeds of the vehicle 10 and the first pre-defined time period is selected from such table. In the curve, a plurality of the first pre-defined time periods are plotted corresponding to different rpms and speeds of the vehicle 10 and the first pre-defined time period is selected from such curve. At step 406, the method 400 determines if the time elapsed since the start of the trigger is greater than the first pre-defined time period. If the time period elapsed since the start of the trigger is greater than the first pre-defined time period, the method 400 moves to step 407, else the method 400 keeps determining if the time elapsed since the start of the trigger is greater than the first pre-defined time period. At step 407, the method 400 comprises instructing a torque/power assist unit 206 to provide torque/power to one or more pre-defined components of the vehicle 10 after expiration of a second pre-defined time period.
[061] In a non-limiting example, the one or more first sensors 202 are throttle position sensors. The one or more second sensors 204 are selected from a group including variable reluctance sensor, hall effect sensor and magneto resistive sensor. The one or more third sensors 205 are tachometers.
[062] In a non-limiting example, the vehicle 10 being a manual transmission vehicle or an automatic transmission vehicle.
[063] In a non-limiting example, the pre-defined value being 10 percent in 50 milli seconds. However, this should not be construed as limiting and other values may also be defined by the manufacturer of the vehicle 10.
[064] In a non-limiting example, the first pre-defined time period ranges from 0 milliseconds to 5 sec. However, this should not be construed as limiting and other values may also be defined by the manufacturer of the vehicle 10.
[065] In a non-limiting example, the second pre-defined time period ranges from 200 milli seconds to 5000 milli seconds. However, this should not be construed as limiting and other values may also be defined by the manufacturer of the vehicle 10.
[066] In an embodiment, the torque/power assist unit 206 is an integrated starter generator. However, this should not be construed as limiting and other now known or later developed torque/power assist unit 206 are well within the scope of the present invention.
[067] In an embodiment, the one or more pre-defined components includes crankshaft of the internal combustion engine and electric motor.
[068] Figure 5 is a block diagram illustrating control unit 108, 208 being connected with one or more units of a vehicle 10, in accordance with an embodiment of the present invention.
[069] As shown, the control unit 108, 208 is operated by means of one or more batteries/energy storage units 120, 220 disposed in the vehicle 10. As already stated in the preceding paragraphs, in an embodiment of the present invention, the control unit 108 receives input from the one or more first sensors 102 and one or more second sensors 104 wherein the one or more first sensors 102 being throttle position sensors and the one or more second sensors 104 being clutch position sensors. In another embodiment of the present invention, the control unit 208 receives input from the one or more first sensors 202, the one or more second sensors 204 and the one or more third sensors 206 wherein the one or more first sensors 202 being throttle position sensors, the one or more second sensors 204 being vehicle speed sensors and the one or more third sensors 205 being engine speed sensors. Further, the control unit 108 receives input from one or more engine temperature sensors 112, 212, gear position sensors 116, 216 and mode of the riding selected by a rider of the vehicle 10 such as, not being limited to, normal driving mode or power mode. The control unit 108, 208 receives input from such sensors and control the torque/power assist unit 106, 206 such as integrated starter generator during starting of the internal combustion engine, running of the internal combustion engine and while providing torque/power assist to the vehicle 10. During the torque/power assist, torque/power assist unit 106, 206 such as integrated starter generator consumes energy from one or more batteries/energy storage units and operate in motor mode. Once the torque / power assist is over the consumed energy from battery/energy storage unit 120, 220 is recharged by the torque/power assist unit 106, 206.
[070] Figure 6a, 6b, 6c and 6d is a graphical representation of engine speed, throttle opening, assist without delay and assist with delay with respect to time period, in accordance with an embodiment of the present invention.
[071] Figure 6a illustrates change in engine speed to initiate the assist. Figure 6b illustrates rate change of throttle opening. Figure 6c illustrates torque/power assist being provided without any delay and Figure 6d illustrates torque/power assist being provided with power delay. The delay is equivalent to the second pre-defined time period i.e. torque/assist is provided to the one or more pre-defined components of the vehicle 10 after expiration of the second pre-defined time period.
[072] The claimed features/method steps of the present invention as discussed above are not routine, conventional, or well understood in the art, as the claimed features/steps enable the following solutions to the existing problems in conventional technologies. Specifically, the technical problem of inefficiently providing torque/power assist to a vehicle using one or more batteries is solved by present invention.
[073] In the present invention, a dedicated battery is not used to provide torque/power assist to the vehicle. The torque/power assist is provided by a torque/power assist unit such as integrated starter generator already present in the vehicle. The present invention, therefore, do not require a dedicated battery for providing torque/power assist which decreases overall cost, weight, dynamics and layout of the vehicle. During the torque/power assist, torque/power assist unit such as integrated starter generator consumes energy from battery and operate in motor mode. Once the torque / power assist is over the consumed energy from battery/energy storage unit is recharged by the torque/power assist unit.
[074] In the present invention, the torque/power assist is provided to one or more pre-defined components with a delay (equal to the second pre-defined time period) which ensures smooth transition of the vehicle from the normal running mode to the power mode without transmission loss and clutch slip.
[075] The present invention improves the power and pick up of the vehicle at different terrains as the torque/power assist can be provided to the vehicle.
[076] The delay function i.e. torque/power assist being provided after expiration of a second pre-defined time period provides market attractiveness to the vehicle because of power enhancement and smooth function of transmission assembly.
[077] While the present invention has been described with respect to certain embodiments, it will be apparent to those skilled in the art that various changes and modification may be made without departing from the scope of the invention as defined in the following claims.

List of Reference Numerals
10- vehicle
100- system
102- first sensors
104- second sensors
106- Torque/Power assist Unit
108- control unit
200- system
202- first sensors
204- second sensors
205- third sensors
206- torque/power assist unit
208- control unit
300- method
400- method
112, 212- Engine Temperature Sensor
116, 216- Gear Position Sensor
120, 220- Battery


, Claims: WE CLAIM:

1. A system (100) for providing a torque/power assist in a vehicle (10), the system (100) comprising:
- one or more first sensors (102), the one or more first sensors (102) being configured to detect a rate of change of throttle opening of the vehicle (10);
- one or more second sensors (104), the one or more second sensors (104) being configured to detect a state of a clutch of the vehicle (10);
- a control unit (108), the control unit (108) communicatively coupled to the one or more first sensors (102) and the one or more second sensors (104), the control unit (108) being configured to:
compare the rate of change of throttle opening with a pre-defined value;
check, upon determination of the rate of change of throttle opening being greater than the pre-defined value, a state of the clutch;
perform, upon determination of the clutch being in a disengaged state, a first set of pre-defined operations and perform, upon determination of the clutch being in an engaged state, a second set of pre-defined operations, wherein:
the first set of pre-defined operation comprises:
compare, upon determination of the clutch being in the disengaged state, a time period elapsed with a first pre-defined time period;
instruct, upon determination of the time period elapsed being less than the first pre-defined time period and engagement of the clutch during the elapsed time period, the torque/power assist unit (106) to provide torque/power to the one or more pre-defined components of the vehicle (10), the torque/power assist unit (106) being instructed to provide the torque/power assist after expiration of a second pre-defined time period; or
instruct, upon the determination of the time period elapsed being greater that the first predefined time period and the clutch being in a disengaged state during the elapsed time period, the torque/power assist unit (106) to provide torque/power to the one or more pre-defined components of the vehicle (10) after expiration of the second pre-defined time period; and
the second set of pre-defined operations comprises:
instruct, upon determination of the clutch being in an engaged state, a torque/power assist unit (106) to provide torque/power to one or more pre-defined components of the vehicle (10), the torque/power assist unit (106) being instructed to provide the torque/power assist after expiration of the second pre-defined time period.

2. The system (100) as claimed in claim 1, wherein the one or more first sensors (102) being throttle position sensors and the one or more second sensors (104) being clutch position sensors.

3. The system (100) as claimed in claim 1, wherein the second pre-defined time period ranges from 100 milli seconds to 5000 milli seconds.

4. The system (100) as claimed in claim 1, wherein the pre-defined value being 10 percent in 50 milliseconds.

5. The system (100) as claimed in claim 1, wherein the vehicle (10) being a manual transmission vehicle.

6. The system (100) as claimed in claim 1, wherein the torque/power assist unit (206) being an integrated starter generator.

7. A system (200) for providing a torque assist in a vehicle (10), the system (200) comprising:
- one or more first sensors (202), the one or more first sensors (202) configured to detect a rate of change of throttle opening in the vehicle (10);
- one or more second sensors (204), the one or more second sensors (204) configured to detect rpm of the vehicle;
- one or more third sensors (205), the one or more third sensors configured to detect speed of the vehicle;
- a control unit (208), the control unit (208) communicatively coupled to the one or more first sensors (202), the one or more second sensors (204) and the one or more third sensors (205) and being configured to:
compare the rate of change of throttle opening with a pre-defined value;
receive, upon determination of the rate of change of throttle opening being greater than the pre-defined value, a real time speed of the vehicle (10) from the one or more second sensors (204) and real time rpm of the vehicle (10) from the one or more third sensors (205) and simultaneously start a trigger for providing torque/power assist;
select a first pre-defined time period corresponding to the real time speed and the real time rpm of the vehicle (10) from a table or a curve, the table or curve being stored in the control unit (208) and having plurality of first pre-defined time-periods mapped corresponding to the plurality of speed and rpm of the vehicle (10);
instruct, upon determination of the time elapsed since the start of the trigger being greater than the first pre-defined time-period, a torque/power assist unit (206) to provide torque/power to one or more pre-defined components of the vehicle (10), the torque/ power assist unit (206) being instructed to provide torque/power assist after expiration of a second pre-defined time period.

8. The system (200) as claimed in claim 7, wherein the one or more first sensors (202) being throttle position sensors, the one or more second sensors (204) being selected from a group including variable reluctance sensor, hall effect sensor and magneto resistive sensor and the one or more third sensors (205) being tachometers.

9. The system (200) as claimed in claim 7, wherein the vehicle (10) being one of: a manual transmission vehicle and an automatic transmission vehicle.

10. The system (200) as claimed in claim 7 wherein the pre-defined value being 10 percent in 50 milli seconds.

11. The system (200) as claimed in claim 7, wherein the second pre-defined time period ranges from 200 milli seconds to 5000 milli seconds.

12. The system (100) as claimed in claim 7, wherein the torque/power assist unit (206) being an integrated starter generator.

13. A method (300) for providing a torque/power assist in a vehicle (10), the method (300) comprising:
- detecting (301), by one or more first sensors (102), a rate of change of throttle opening of the vehicle (10);
- comparing (302), by a control unit (108), the rate of change of throttle opening with a pre-defined value;
- receiving (303), upon determination of rate of change of throttle opening being greater than the pre-defined value, a state of the clutch, the state of the clutch being received by one or more second sensors (104) being configured to detect the state of the clutch;
- performing, by the control unit (108) upon determination of the clutch being in a disengaged state, a first set of pre-defined operations and performing, by the control unit (108) upon determination of the clutch being in an engaged state, a second set of pre-defined operations, wherein
- the first set of pre-defined operations comprises:
- comparing (306), upon determination of the clutch being in a disengaged state, a time period elapsed with a first pre-defined time period;
- instructing (307,308), upon determination of time period elapsed being less that the first pre-defined time period and engagement of the clutch during the elapsed time period, the torque/power assist unit to provide torque/power to the one or more pre-defined components of the vehicle (10) after expiration of a second pre-defined time period; or
- instructing (308), upon the determination of time period elapsed being greater that the first pre-defined time period and the clutch being in a disengaged state during the elapsed time period, the torque/power assist unit (106) to provide torque/power to the one or more pre-defined components of the vehicle (10) after expiration of the second pre-defined time period; and
- the second set of pre-defined operation comprises:
- instructing (309), upon determination of the clutch being in an engaged state, a torque/power assist unit (106) to provide torque/power to one or more pre-defined components of the vehicle (10), the torque/power assist unit (106) being instructed to provide the torque/power assist after expiration of the second pre-defined time period.

14. The method (300) as claimed in claim 13, wherein the one or more first sensors (102) being throttle position sensors and the one or more second sensors (104) being clutch position sensors.

15. The method (300) as claimed in claim 13, wherein the second pre-defined time period ranges from 100 milli seconds to 5000 milli seconds.

16. The method (300) as claimed in claim 13, wherein the pre-defined value being 10 percent in 50 milliseconds.

17. The method (300) as claimed in claim 13, wherein the vehicle (10) being a manual transmission vehicle.

18. The method (300) as claimed in claim 13, wherein the torque/power assist unit (106) being an integrated starter generator.

19. A method (400) for providing a torque assist in a vehicle (10), the method (400) comprising:
- detecting (401), by one or more first sensors (202), a rate of change of change of throttle opening of the vehicle (10);
- comparing (402, 403), by a control unit (208), the rate of change of throttle opening with a pre-defined value;
- receiving (404), by the control unit (208) upon determination of the rate of change of throttle opening being greater than the pre-defined value, a real time speed of the vehicle (10) from one or more second sensors (204) and real time rpm of the vehicle (10) from one or more third sensors and simultaneously start a trigger for providing torque/power assist;
- selecting (405), by the control unit (208), a first pre-defined time period corresponding to the real time speed and the real time rpm of the vehicle (10) from a table or a curve, the table or curve being stored in the control unit (208) and having plurality of first pre-defined time-periods mapped corresponding to the plurality of speed and rpm of the vehicle (10);
- instructing (406, 407), by the control unit (208) upon determination of the time elapsed since the start of the trigger being greater than the first pre-defined time-period, a torque/power assist unit (206) to provide torque/power to one or more pre-defined components of the vehicle (10), the torque power unit being instructed to provide torque/power assist after expiration of a second pre-defined time period.

20. The method (400) as claimed in claim 19, wherein the one or more first sensors (202) being throttle position sensors, the one or more second sensors (204) being selected from a group including variable reluctance sensor, hall effect sensor and magneto resistive sensor and the one or more third sensors (205) being tachometers.

21. The method (400) as claimed in claim 19, wherein the vehicle (10) being one of: a manual transmission vehicle and an automatic transmission vehicle.

22. The method (400) as claimed in claim 19, wherein the pre-defined value being 10 percent in 50 milli seconds.

23. The system (400) as claimed in claim 19, wherein the second pre-defined time period ranges from 200 milli seconds to 5000 milli seconds.

24. The system (100) as claimed in claim 19, wherein the torque/power assist unit (206) being an integrated starter generator.

Dated this 17th day of January 2024

TVS MOTOR COMPANY LIMITED
By their Agent & Attorney

(Nikhil Ranjan)
of Khaitan & Co
Reg No IN/PA-1471

Documents

Application Documents

# Name Date
1 202441003405-STATEMENT OF UNDERTAKING (FORM 3) [17-01-2024(online)].pdf 2024-01-17
2 202441003405-REQUEST FOR EXAMINATION (FORM-18) [17-01-2024(online)].pdf 2024-01-17
3 202441003405-PROOF OF RIGHT [17-01-2024(online)].pdf 2024-01-17
4 202441003405-POWER OF AUTHORITY [17-01-2024(online)].pdf 2024-01-17
5 202441003405-FORM 18 [17-01-2024(online)].pdf 2024-01-17
6 202441003405-FORM 1 [17-01-2024(online)].pdf 2024-01-17
7 202441003405-FIGURE OF ABSTRACT [17-01-2024(online)].pdf 2024-01-17
8 202441003405-DRAWINGS [17-01-2024(online)].pdf 2024-01-17
9 202441003405-DECLARATION OF INVENTORSHIP (FORM 5) [17-01-2024(online)].pdf 2024-01-17
10 202441003405-COMPLETE SPECIFICATION [17-01-2024(online)].pdf 2024-01-17