FORM 2
THE PATENTS ACT 1970
[39 OF 1970]
&
The Patents Rules, 2003
COMPLETE SPECIFICATION
[See Section 10 and Rule 13]
TITLE: “SYSTEM AND METHOD OF AUTOMATIC CHANGING OF DRIVING MODES OF A VEHICLE”
Name and address of the Applicant:
TATA MOTORS LIMITED; Bombay House, 24 Homi Mody Street, Hutatma
Chowk, Mumbai 400 001 Maharashtra, India
Nationality: Indian
THE FOLLOWING SPECIFICATION DESCRIBES THE NATURE OF INVENTION AND THE MANNER IN WHICH IT IS TO BE PERFORMED.

PRIORITY DETAILS [001] The present complete after provisional disclosure claims priority from an Indian Provisional Patent application having application number 202321046136 filed on 10th July 2023 titled “SYSTEM AND METHOD OF AUTOMATIC CHANGING OF DRIVING MODES OF A VEHICLE”
TECHNICAL FIELD [002] The present disclosure relates generally to changing of driving modes of a vehicle, and more particular to automatic changing of driving modes of vehicles based on driving patterns.
BACKGROUND
[003] Conventionally, all vehicles are driven with the output torque which is received at the output shaft of the vehicle engine. There is no control over the output torque of the engine shaft based on specific situation or the condition in which the vehicle is getting driven. The vehicle engine is configured to produce the same output torque based for each acceleration signal input. In an embodiment, if the vehicle is getting driven at first gear and the acceleration pedal up to 50% of its full travel, the vehicle will tend to get driven with X output torque received from the engine. This X output torque will happen every time when the accelerator pedal is pressed upto 50% at first gear. There can be a possibility where the vehicle is to be driven with a low torque but the engine is configured to more torque than the required torque value. Such provision of more torque is because of the set default parameters of the engine which further lead to development of unnecessary extra torque by consuming more fuel than required.
[004] In order to avoid such scenarios, the vehicles are equipped with control system over engines through modes where the engine torque can be controlled based on the situation of the road or the travel. The option to set the mode for controlling the vehicle is provided to the driver or the passenger of the vehicle. The modes may

be available in Eco mode for low power, balance mode for medium power and power mode for high power.
[005] Many times, it may happen that the driver may not select the correct mode for the vehicle as per the route. This improper selection mostly happens because the driver does not understand the mechanism behind selection of the mode or the driver may also forget to change due various situation depending upon the driver’s mood or mental presence over the travel Ultimately, the vehicle is getting driven in a different mode than it is required to be driven in a correct drive mode. Sometimes, the driver may forget to switch from one mode to other when the required route is switched. Though, the provision of modes is provided for getting the vehicle to driven at a particular mode, the usage of modes is not effectively used or implemented. Therefore, the human intervention or control for selecting the mode based on the route under which the vehicle will be going is to be eliminated.
[006] There is, therefore, a need for automatic control over the engine parameters by determining the correct mode for the vehicle.
SUMMARY OF THE INVENTION [007] In an embodiment, a system for automatically changing modes of an engine of a vehicle is disclosed. The system further comprises a vehicle electronic control unit (ECU) communicatively coupled to Vehicle speed sensor and accelerator pedal sensor. An engine electronic control unit (ECU) communicatively coupled to vehicle ECU further comprising a memory further comprising a plurality of parameters sets corresponding to a plurality of modes for controlling the engine wherein the Vehicle ECU and Engine ECU are communicatively coupled to each other to control the engine output based on the vehicle speed values and the accelerator pedal position.
[008] In another embodiment, a method for automatically changing modes of an engine of a vehicle is disclosed. The method comprises detecting the status of

vehicle from OFF state to ON state. The method further comprises measuring the vehicle speed and comparing it with a predefined speed value. The method further comprises switching the vehicle to power mode if the speed of the vehicle is less than the predefined speed value. The method further comprises monitoring the accelerator pedal position for a pre-defined set time values. The method further comprises switching the engine of the vehicle based on the comparison of the accelerator pedal position with predefined set values which were monitored at pre-defined set time values.
BRIEF DESCRIPTION OF THE DRAWINGS [009] The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate exemplary embodiments and, together with the description, serve to explain the disclosed principles.
[010] FIG. 1 illustrates a block diagram of the system 100 is disclosed, for automatic changing of driving modes of a vehicle 102 is disclosed, in accordance with an embodiment of the present disclosure.
[011] FIG. 2 illustrates a flowchart illustrating a method 200 for automatic changing of driving modes of a vehicle is disclosed, in accordance with an embodiment of the present disclosure.
[012] FIG. 3 illustrates a block diagram 300 on the connectivity of components of vehicle with vehicle ECU, in accordance with an embodiment of the present subject matter.
[013] FIG. 4 illustrates an accelerated based torque table 400 in accordance with an embodiment of the present subject matter
DETAILED DESCRIPTION OF THE DRAWINGS
[014] The foregoing has broadly outlined the features and technical
advantages of the present disclosure in order that the detailed description of the
disclosure that follows may be better understood. Additional features and advantages
of the disclosure will be described hereinafter which form the subject of the claims of

the disclosure. It should be appreciated by those skilled in the art that, the conception and specific embodiments disclosed may be readily utilized as a basis for modifying other assemblies, mechanisms, systems, devices, methods, and processes for carrying out the same purposes of the present disclosure. It should also be realized by those skilled in the art that, such equivalent constructions do not depart from the scope of the disclosure as set forth in the appended claims. The novel features which are believed to be characteristics of the disclosure, to its system, together with further objects and advantages will be better understood from the following description when considered in connection with the accompanying figures. It is to be expressly understood, however, that each of the figures is provided for the purpose of illustration and description only and is not intended as a definition of the limits of the present disclosure.
[015] The terms “comprises”, “comprising”, or any other variations thereof, are intended to cover a non-exclusive inclusions, such that a mechanism, a system, or a device that comprises a list of components or steps does not include only those components or steps but may include other components or steps not expressly listed or inherent to such setup or device or method. In other words, one or more elements in a system or apparatus proceeded by “comprises… a” does not, without more constraints, preclude the existence of other elements or additional elements in the system or apparatus.
[016] Exemplary embodiments are described with reference to the accompanying drawings. Wherever convenient, the same reference numbers are used throughout the drawings to refer to the same or like parts. While examples and features of disclosed principles are described herein, modifications, adaptations, and other implementations are possible without departing from the spirit and scope of the disclosed embodiments. It is intended that the following detailed description be considered as exemplary only, with the true scope and spirit being indicated by the following claims. Additional illustrative embodiments are listed below.
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[017] Automobiles are provided with a plurality of modes for getting the required level of output torque and other sub-component level output. Each mode is enabled to primarily have control over engine fuel parameters for generation of power and torque. The secondary controls may be over transmission, the vehicle electrical power consumption and the like.
[018] The main aim of setting up the provision of mode is to provide the right amount of torque and power as and when required during the travel from the vehicle. The modes may be categorized from low to high wherein each mode is enabled to set pre-defined parameters of the vehicle engine and sub-components. The lowest mode may set the vehicle engine to provide low power and engine output torque, followed by one or more modes enabled to provide power and engine output torque in increasing order which may reach to a highest mode enabled to provide highest power and engine output torque. The modes may be named as per the nomenclature of the vehicle manufacturer or by any vehicle regulation.
[019] In an embodiment, the highest mode may be termed as “Power mode” and the lowest mode may be named “Eco engine ECU mode”. Furthermore, a mode which may produce engine output torque value present between the Power mode and Eco mode may be termed as “City Mode”. The present disclosure is described with Power mode and Eco mode as the nomenclature; however, the modes names is not limited to Power mode, Eco mode and City Mode and may further vary in numbers.
[020] A system is disclosed for automatic switching of the modes of the vehicle by determining the driver’s driving condition. The driving condition by the driver provides to interpret the demand power and torque required for the vehicle on the route at which the vehicle is being driven. The present system thus provides a solution for dynamically changing the modes of the vehicle by the vehicle internal system by monitoring the driving patterns of the driver.
[021] Referring now to FIG. 1, a block diagram of the system 100 is disclosed, for automatic changing of driving modes of a vehicle 102 is disclosed, in accordance with an embodiment of the present disclosure. The system 100 enables a
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vehicle 102 to switch between multiple modes by monitoring the driver’s acceleration and the vehicle parameters. The system 100 comprises a vehicle ECU 104 connected to an engine ECU 106, an accelerator pedal sensor 108, a vehicle speed sensor 110. The engine ECU 106 further comprises a memory 112. The accelerator pedal sensor 108 is enabled to detect the position of the accelerator pedal throughout its travel path. Based on the position detected, the vehicle ECU 104 is enabled to detect the percentage of the accelerator pedal travel happened from its resting position, due to driver’s demand, which denotes the acceleration demand at which vehicle 102 is to be driven. The purpose of using the position sensor is detect the presence of accelerator pedal between its original position at which no acceleration is required and the final position at which highest level of acceleration is required. The values of acceleration pedal travel may be fetched from the accelerator pedal sensor 108 by the vehicle ECU 104. The vehicle speed sensor 110 is enabled to detect the speed of the vehicle 102 at the wheel or at the transmission output. The memory 112 may comprise predefined parameters in which the engine 118 is to be functioned and powered at a specific mode. In an embodiment, the memory 112 is shown to comprise, but not limited to, a set of Power mode parameters 114 and a set of Eco mode parameters 116. Although system 100 is shown to have two modes, the system 100 may comprise and is capable of having one or more intermediate modes. There may be a plurality of power modes or there may be a plurality of eco modes.
[022] For reference, power mode may be interchangeably referred as turbo mode or sport mode. Further, Eco mode may be interchangeably referred as Light mode. There may be additional modes for adjusting the power and torque which may be referred as Balance mode which adjusts the engine parameters to provide engine torque and power between the Power and Eco mode. Balance mode is also referred as Medium mode or city mode.
[023] In an embodiment, the components of the system 100 may be connected with each other via a communication network. The communication network may be a hardwired network or a wireless network. In one embodiment, the communication
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network may comprise a Control Area Network (CAN), Automotive ethernet, Local Interconnect Network (LIN), FlexRay, Ethernet, and Media Oriented Systems Transport (MOST).
[024] Referring to FIG. 2, a flowchart illustrating a method 200 for automatic changing of driving modes of a vehicle 102 is disclosed, in accordance with an embodiment of the present disclosure.
[025] At step 202, the vehicle ECU 104 is enabled to detect the status of the vehicle 102 from whether it is stationary or getting driven at a certain speed. The vehicle ECU 104 is configured monitor the switching of the vehicle 102, especially the engine 118 from OFF state to ON state.
[026] At step 204, Once the vehicle ECU 104 detects that the vehicle 102 is switched On, the vehicle ECU 104 moves further at step 204 for checking the speed of the vehicle 102.
[027] At step 206, the vehicle ECU 104 is enabled to compare the vehicle speed with a predefined speed value, referred as x Km/hr. The predefined value, “x” is either 0 Km/hr or any speed value which is 0, close to zero or very low. The aim of step 206 is to determine whether the vehicle 102 is set into motion or it is maintained in the stationary motion even if the vehicle 102 is in ON state.
[028] At step 208, if the vehicle 102 is detected in stationary condition, then vehicle ECU 104 by default sets the vehicle engine 118 in power mode by sending a signal to the engine ECU 106 to set the Power mode parameters 114 from the memory 112.
[029] At step 210, the vehicle ECU 104 periodically monitors the accelerator pedal position for a pre-defined time. The vehicle ECU 104 is enabled to fetch the accelerator pedal position through the accelerator pedal sensor 108. The aim of monitoring the accelerator pedal position periodically is to check whether the demand for power and torque is required or there is a need to lower down the power of the vehicle 102.
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[030] At step 212, the vehicle ECU 104 compares the accelerated pedal position with a predefined set value 1. If the accelerator pedal position is more than predefined set value 1 for a predefined set time value 1, then the vehicle ECU 104 determines that the power is required from the engine 118 for the vehicle drive and to continue the demand of the power, the engine 118 is kept in the Power mode. The Engine ECU 106 thus maintains the engine 118 with Power mode parameters 114. If the accelerator pedal position is found to be less than the predefined set value 1 for predefined set time 1, then the vehicle ECU 104 determines that there is less requirement of power.
[031] At step 214, the vehicle ECU 104 sends the signal to Engine ECU 106 to switch the mode of the engine 118 to Eco mode by setting up the engine 118 to run with the Eco mode parameters 116.
[032] At step 216, the vehicle ECU 104 compares the accelerated pedal position with a predefined set value 2 of accelerator pedal position. If the accelerator pedal position is more than predefined set value 2 for a predefined set time value 2, then the vehicle ECU 104 determines that the power is required from the engine 118 and the engine 118 is to be switched from Eco mode to Power mode. The vehicle ECU 104 communicates with the engine ECU 106 to set the engine 118 in Power mode by maintaining the engine 118 with Power mode parameters 114. If the accelerator pedal position is found to be less than the predefined set value 2 for predefined set time 2, then the vehicle ECU 104 determines that there is less requirement of power and the vehicle ECU 104 continue to keep the vehicle 102 in Eco mode by running the engine 118 with eco mode parameters 114.
[033] Referring to Figure 3, a block diagram 300 is illustrated on the
connectivity of components 302 of vehicle 102 with vehicle ECU 104, in accordance
with an embodiment of the present subject matter.
[034] The main aspect in connection of components of the vehicle 102 with
the vehicle ECU 104 is to measure a plurality of vehicle parameters 304 in real time to
monitor and determine the appropriate mode in which the vehicle 102 is to be driven.
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The plurality of vehicle parameters may comprise Engine Speed, Engine torque, Vehicle Speed, Gear, Clutch, Brake pedal position, Fuel rate, Exhaust Temperature, Road Grade, Real time Mass.
[035] In an embodiment, a plurality of sensors may be implemented to measure the plurality of vehicle parameters 304.
[036] In an embodiment, the eco mode may be adjusted based on an accelerated based torque table. Figure 4 illustrates an accelerated based torque table 400 in accordance with an embodiment of the present subject matter. The accelerated based torque table may be accessed by the Vehicle ECU 104 and Engine ECU 106 to get the required torque from the engine 118 at a particular speed and a particular gear ratio.
[037] It is intended that the disclosure and examples be considered as exemplary only, with a true scope and spirit of disclosed embodiments being indicated by the following claims.
Equivalents:
[038] With respect to the use of substantially any plural and/or singular terms herein, those having skill in the art can translate from the plural to the singular and/or from the singular to the plural as is appropriate to the context and/or application. The various singular/plural permutations may be expressly set forth herein for sake of clarity.
[039] It will be understood by those within the art that, in general, terms used herein, and especially in the appended claims (e.g., bodies of the appended claims) are generally intended as “open” terms (e.g., the term “including” should be interpreted as “including but not limited to,” the term “having” should be interpreted as “having at least,” the term “includes” should be interpreted as “includes but is not limited to,” etc.). It will be further understood by those within the art that if a specific number of an introduced claim recitation is intended, such an intent will be explicitly recited in the claim, and in the absence of such recitation no such intent is present. For example, as
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an aid to understanding, the following appended claims may contain usage of the introductory phrases “at least one” and “one or more” to introduce claim recitations. However, the use of such phrases should not be construed to imply that the introduction of a claim recitation by the indefinite articles “a” or “an” limits any particular claim containing such introduced claim recitation to inventions containing only one such recitation, even when the same claim includes the introductory phrases “one or more” or “at least one” and indefinite articles such as “a” or “an” (e.g., “a” and/or “an” should typically be interpreted to mean “at least one” or “one or more”); the same holds true for the use of definite articles used to introduce claim recitations. In addition, even if a specific number of an introduced claim recitation is explicitly recited, those skilled in the art will recognize that such recitation should typically be interpreted to mean at least the recited number (e.g., the bare recitation of “two recitations,” without other modifiers, typically means at least two recitations, or two or more recitations). Furthermore, in those instances where a convention analogous to “at least one of A, B, and C, etc.” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., “a system having at least one of A, B, and C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). In those instances where a convention analogous to “at least one of A, B, or C, etc.” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., “a system having at least one of A, B, or C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). It will be further understood by those within the art that virtually any disjunctive word and/or phrase presenting two or more alternative terms, whether in the description, claims, or drawings, should be understood to contemplate the possibilities of including one of the terms, either of the terms, or both terms. For example, the phrase “A or B” will be understood to include the possibilities of “A” or “B” or “A and B.”
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[040] In addition, where features or aspects of the disclosure are described in terms of Markush groups, those skilled in the art will recognize that the disclosure is also thereby described in terms of any individual member or subgroup of members of the Markush group.
[041] While various aspects and embodiments have been disclosed herein, other aspects and embodiments will be apparent to those skilled in the art. The various aspects and embodiments disclosed herein are for purposes of illustration and are not intended to be limiting.
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Referral Numerals:

Reference Number Description
100 System
102 Vehicle
104 Vehicle ECU
106 Engine ECU
108 Accelerator pedal sensor
110 Vehicle speed sensor
112 Memory
114 Power mode parameters
116 Eco mode parameters
118 Engine
302 Components
304 Plurality of vehicle parameters
200 Method
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We Claim:
1. A system 100 for automatically changing modes of an engine 118 of a vehicle
102, the system 100 comprising:
a vehicle electronic control unit (ECU) 104 communicatively coupled to Vehicle speed sensor 110 and accelerator pedal sensor 108;
an engine electronic control unit (ECU) 106 communicatively coupled to vehicle ECU 104 further comprising:
a memory 112 further comprising a plurality of parameters sets 304 corresponding to a plurality of modes (114, 116)) for controlling the engine 118;
wherein the Vehicle ECU 104 and Engine ECU 106 are communicatively coupled to each other to control the engine 118 output based on the vehicle speed values and the accelerator pedal position.
2. The system 100 of claim 1, wherein the vehicle speed sensor 110 is enabled to detect real time speed value of the vehicle 102 and provide to the Vehicle ECU 104.
3. The system 100 of claim 1, wherein the accelerator pedal sensor 108 is enabled to detect the real time position of the accelerator pedal through the accelerator pedal travel path.
4. The system 100 of claim 1, wherein the plurality of modes of the engine 118 comprises:
a low power mode (Eco mode) in which the torque output of the engine 118 is low;
a high power mode (Power mode) in which the torque output of the engine 118 is high.

5. The system 100 of claim 1, wherein the parameters 304 for controlling the engine 118 for each mode comprises Engine Speed, Engine torque, Vehicle Speed, Gear, Clutch, Brake pedal position, Fuel rate, Exhaust Temperature, Road Grade, Real time Mass.
6. The system 100 of claim 1, wherein the Vehicle ECU 104 and Engine ECU 106 are configured to monitor the accelerator pedal position with a predefined values for a predefined time.
7. The system 100 of claim 6, wherein if the accelerator pedal position is less than a predefined value 1 for a predefined time 1, then the engine 118 is switched to low power mode.
8. The system 100 of claim 6, wherein if the accelerator pedal position is more than a predefined value 2 for a predefined time 2, then the engine 118 is switched to high power mode.
9. A system 100 for automatically changing driving modes of a vehicle 102, the system 100 comprising:
an engine electronic control unit (ECU) 106 enabled to control an engine 118;
a vehicle electronic control unit (ECU) 104;
an accelerator pedal sensor 108;
a vehicle speed sensor 110; wherein the engine ECU 106 and the vehicle ECU 104 are communicatively coupled to the accelerator pedal sensor 108 and the vehicle speed sensor 110 to check the demand for acceleration at particular speeds and switch the engine 118 between a plurality of modes.

10. A method 200 for automatically changing modes of an engine 118 of a vehicle
102, the method comprising:
detecting the status of vehicle 102 from OFF state to ON state;
measuring the vehicle speed and comparing it with a predefined speed value;
switching the vehicle 102 to power mode if the speed of the vehicle 102 is less than the predefined speed value;
monitoring the accelerator pedal position for a pre-defined set time values,
switching the engine 118 of the vehicle 102 based on the comparison of the accelerator pedal position with predefined set values which were monitored at pre-defined set time values.
11. The method of claim 10, wherein the modes of the engine 118 comprises:
a low power mode (Eco mode) in which the torque output of the engine 118 is low;
a high power mode (Power mode) in which the torque output of the engine 118 is high.
12. The method of claim 10, wherein the vehicle speed is measured by vehicle speed sensor 110.
13. The method of claim 10, wherein the position of the accelerator pedal is determined by accelerator pedal sensor 108.
14. The method of claim 10 and 11, wherein if the accelerator pedal position is less than a predefined value 1 for a predefined time 1, then the engine 118 is switched to low power mode.

15. The method of claim 10 and 11, the if the accelerator pedal position is more than a predefined value 2 for a predefined time 2, then the engine 118 is switched to high power mode.