[0001] The present disclosure, in general, relates to a gear shift intention detection system for a manual gear transmission system, and, more particularly, to gear shift intention detection system and method for detecting state of gear shift lever during gear engagement and dis-engagement to improve engine rpm.
BACKGROUND
[0002] Background description includes information that may be useful in understanding the present disclosure. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed subject matter, or that any publication specifically or implicitly referenced is prior art.
[0003] Conventionally, detection of engaged gear is well known by a sensor or switch placed in the final engaged position in the gear transmission system. Most of the technologies are related to automatic gear transmission system or semi¬automatic gear transmission system.
[0004] US patent publication US6183392B1 relates to an automatic clutch intended for an engine-transmission unit in a vehicle with random gear changing. The gearbox comes into action automatically as soon as it has recognized the driver's intentions. Furthermore, the gear lever shift, the speed and the engine torque of the vehicle as well as the brake system action are monitored. As soon as the gear lever has shifted and the speed or the torque has fallen sufficiently and/or the brake system is actuated, the clutch is released. The present prior art uses force dynamometer on gear lever Knob, Ace. Pedal input and Engine Torque to detect gear shift intension. However present US publication do not determine the actual target gear.
[0005] Technical objective: In conventional Manual Transmission vehicle, while doing Gearshift Driver usually press clutch pedal and release accelerator pedal to avoid engine rpm overshooting or undershooting. But still engine rpm

synchronization after gearshift is never smooth, i.e., sometimes engine rpm overshoots /undershoots or require longer clutch slipping to avoid jerks or shocks. Therefore, for better management of Engine rpm, it is required to detect the gear shit intention of the driver.
[0006] Technical problem: existing technologies related to semi-automated or automated gear transmission. Further, the existing technologies are costly due to complicated systems and lot of sensors placed in each selection and shifting segment.
[0007] Accordingly, there is a need in the art to provide a gear shift intention detection system that is cost effective and effectively measure or detect gear shift intention in the manual transmission system and do effective engine rpm management.
OBJECTS OF THE DISCLOSURE
[0008] Some of the objects of the present disclosure, which at least one embodiment herein satisfy, are listed hereinbelow.
[0009] The principal object of the present subject matter is to provide a gear shift intention detection system for manual transmission system for detecting gear shift intention.
[0010] Another object of the present subject matter is to provide a gear shift intention detection system and a method for effective management of engine rpm based on detected/determined gear shifting pattern.
[0011] Another object of the present subject matter is to provide smooth gear shifting in manual gear transmission system.
[0012] Yet another object of the present subject matter is provide automatic clutch operation by detecting the driver's intention of gear shifting.
[0013] These and other objects and advantages of the present invention will be apparent to those skilled in the art after a consideration of the following detailed

description taken in conjunction with the accompanying drawings in which a preferred form of the present invention is illustrated.
SUMMARY
[0014] This summary is provided to introduce concepts related to systems and methods for detecting gear shift intention of driver of vehicle. The concepts are further described below in the detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.
[0015] The present disclosure relates to a gear shift intention detection (GSID) system for detecting intention of gear shift in manual gear transmission system. The GSID system (100) includes first switch, second switch, and a draw wire detection system. The first switch and the second switch are activated by left and right side movement of the gear lever. The gear shift intention detection (GSID) system receives switch signals from the first switch and the second switch. Further, the GSID system receive voltage output signal (Vo) from the draw wire potentiometer sensor based on selection and shifting of gears. Furthermore, the GSID system determines gear shift intention based on the received switch signals and the received voltage output signal (Vo).
[0016] In an aspect, the GSID system determines gear shift intention based on the received voltage output signal (Vo).
[0017] In an aspect, the GSID system determines engaged gears based on the received switch signals and the received voltage output signal (Vo).
[0018] In an aspect, the GSID system determines state of the gear shift lever based on the received switch signals and the received voltage output signal (Vo), the state of gear shift lever is Engaging, Disengaging, and Engaged.
[0019] In an aspect, the GSID system determines sending state of gear shift lever to Engine Management System (ECM) to manage engine RPM.

[0020] In an aspect, the switch signals from the first switch indicate selection of low speed rank, the low speed rank indicate selection of first gear or second gear.
[0021] In an aspect, the switch signals from the second switch indicate selection of fifth and reverse speed rank, the fifth and reverse speed rank indicate selection of fifth gear or reverse gear.
[0022] The present disclosure further relates to a method for detecting gear shift intention in manual gear transmission system having a gear shift lever (104) and managing engine rpm. The method includes receiving, by gear shift intention detection module, switch signals of first switch and second switch activated by movement of the gear shift lever; receiving by the gear shift intention detection module, voltage output signal (Vo) from a draw wire potentiometer sensor coupled to the gear shift lever; and determining, by the gear shift intention detection module, gear shift intention by the received switch signals and the received voltage output signal (Vo).
[0023] In an aspect, the method further determine high speed rank gear shift intention based on the received voltage output signal (Vo).
[0024] In an aspect, the method further determine engaged gears based on the received switch signals and the received voltage output signal (Vo).
[0025] In an aspect, the method further comprising determining state of the gear shift lever based on the received switch signals and the received voltage output signal (Vo), the state of gear shift lever are Engaging, Disengaging, and Engaged.
[0026] In an aspect, the method further comprising sending state of gear shift lever to Engine Management System (ECM) to manage engine RPM.
[0027] In another aspect, the switch signals from the first switch indicate selection of low speed rank, the low speed rank indicate selection of first gear or second gear.

[0028] In an aspect, the switch signals from the second switch indicate selection of fifth and reverse speed rank, the fifth and reverse speed rank indicate selection of fifth gear or reverse gear.
[0029] Various objects, features, aspects, and advantages of the inventive 5 subject matter will become more apparent from the following detailed description of preferred embodiments, along with the accompanying drawing figures in which like numerals represent like components.
[0030] It is to be understood that the aspects and embodiments of the disclosure described above may be used in any combination with each other. Several of the 10 aspects and embodiments may be combined to form a further embodiment of the disclosure.
[0031] The foregoing summary is illustrative only and is not intended to be in any way limiting. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features will become apparent 15 by reference to the drawings and the following detailed description.
BRIEF DESCRIPTION OF THE DRAWINGS
[0032] The illustrated embodiments of the subject matter will be best understood by reference to the drawings, wherein like parts are designated by like numerals throughout. The following description is intended only by way of 20 example, and simply illustrates certain selected embodiments of devices, systems, and methods that are consistent with the subject matter as claimed herein, wherein:
[0033] FIG. 1 illustrates a general pattern of gear selection and shifting in five speed manual gear transmission system;
[0034] FIG. 2 illustrates configuration of first switch, second switch, and draw 25 wire potentiometer sensor with respect to gear shift lever, in accordance with an embodiment of the present subject matter;
[0035] FIG. 3 illustrates division of low speed rank, high speed rank, and fifth and reverse gear speed rank with different terminals decided based upon voltage
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draw from the draw wire potentiometer sensor, in accordance with an exemplary embodiment of the present disclosure;
[0036] FIG. 4 illustrates a system architecture of gear shift intention detection (GSID) system, in accordance with an exemplary embodiment of the present 5 disclosure;
[0037] Fig. 5 illustrates block diagram of flow of information about the state of gear shift lever to manage engine rpm, in accordance with an exemplary embodiment of the present disclosure;
[0038] Fig. 6 illustrates method for detecting gear shift intention, in accordance 10 with an exemplary embodiment of the present disclosure; and
[0039] Fig. 7 illustrates a method for managing engine rpm based on the detected gear shift intention, in accordance with an exemplary embodiment of the present disclosure.
[0040] The figures depict embodiments of the disclosure for purposes of 15 illustration only. One skilled in the art will readily recognize from the following description that alternative embodiments of the structures and methods illustrated herein may be employed without departing from the principles of the disclosure described herein.
DETAILED DESCRIPTION
20 [0041] The detailed description of various exemplary embodiments of the disclosure is described herein with reference to the accompanying drawings. It should be noted that the embodiments are described herein in such details as to clearly communicate the disclosure. However, the amount of details provided herein is not intended to limit the anticipated variations of embodiments; on the
25 contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the present disclosure as defined by the appended claims.
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[0042] It is also to be understood that various arrangements may be devised that, although not explicitly described or shown herein, embody the principles of the present disclosure. Moreover, all statements herein reciting principles, aspects, and embodiments of the present disclosure, as well as specific examples, are 5 intended to encompass equivalents thereof.
[0043] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments. As used herein, the singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further 10 understood that the terms “comprises”, “comprising”, “includes” and/or “including,” when used herein, specify the presence of stated features, integers, steps, operations, elements and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or groups thereof.
15 [0044] It should also be noted that in some alternative implementations, the functions/acts noted may occur out of the order noted in the figures. For example, two figures shown in succession may, in fact, be executed concurrently or may sometimes be executed in the reverse order, depending upon the functionality/acts involved.
20 [0045] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which example embodiments belong. It will be further understood that terms, e.g., those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context
25 of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
[0046] Embodiments explained herein pertain to systems and methods for detecting gear shift intention in five speed manual transmission system. Further, the present system and method can be implemented in six speed manual gear
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transmission system. FIG. 1 illustrates a general gear lever shift movement 101 and gear lever select movement 102. The present system and method is explained considering five gear transmission pattern.
[0047] Fig. 2 illustrate configuration of first switch, second switch, and draw
5 wire potentiometer sensor in the gear shift transmission system in accordance with
an embodiment of the present subject matter. In the present five speed gear select
shift pattern as shown in fig.2, odd gears are provided above the centre terminal line
‘T’ and even gears, i.e., 2nd, 4th and reverse gear are positioned below the centre
terminal line ‘T’. The centre terminal line ‘T’ passes along gear select movement
10 path. As shown in the fig. 2, the first switch 101 positioned on left hand side of gear
shift lever 104 to detect selection of low speed rank, i.e., first gear and second gear.
The second switch 102 is positioned on right hand side of the gear shift lever 104
to detect selection of fifth and reverse speed rank, i.e., fifth gear and reverse gear.
Further, the high speed rank, i.e., third gear and fourth gear are provided in vertical
15 line of the neutral point. A draw wire potentiometer sensor 103 is coupled to the
gear shift lever 104 to detect engagement and dis-engagement of the particular gear.
[0048] The first switch 101 and the second switch 102 are normal close (NC) type switch. The first switch 101 opens when Low Speed Rank is selected and provides ‘0’ Output. Similarly, the second switch 102 opens circuits when fifth and 20 reverse speed rank is selected and provides ‘0’ output. The draw wire potentiometer sensor 103 provides different voltage based on length of wire drawn.
[0049] Further, a person skilled in the art knows what is draw wire potentiometer sensor. For reference, the draw-wire measurement principle is a contact measuring technique. Draw wire position sensor is a simple yet robust 25 method of measuring displacement, position and movement. The principle of a draw wire sensor is relatively straightforward, hence its inherent reliability. Therefore, the draw wire potentiometer sensor provides robust result in the present application.
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[0050] Referring to fig. 3, based on the wire drawn from the draw wire potentiometer sensor 103 the manual gear selecting and shifting pattern is divided into seven different zones or terminals. The terminals based on wire drawn is explained below:
5 Table 1

Phase (Fig. 3) Draw Wire Voltage Output (V) System State of Sensor C
Odd Gear Engaged 11‐12 T1
Odd Gear Disengaging 9‐10 T3
Odd Gear Engaging 7‐8 T5
Neutral Range 4.5‐6.5 T
Even Gear Engaging 3‐4 T6
Even Gear Disengaging 1‐2 T4
Even Gear Engaged 0‐1 T2
[0051] Referring to fig. 4, a gear shift intention detection (GSID) system 100 having a gear shift intention detection module 105 coupled with the first switch 101, second switch 102, and the draw wire potentiometer sensor 103 to receive 10 inputs.
[0052] The GISD system 100 includes a processor(s), an interface(s), and a memory. The processor(s) may be implemented as one or more microprocessors, microcomputers, microcontrollers, digital signal processors, central processing units, logic circuitries, and/or any devices that manipulate data based on operational 15 instructions. Among other capabilities, the one or more processor(s) are configured to fetch and execute computer-readable instructions and one or more routines stored in the memory. The memory may store one or more computer-readable instructions
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or routines, which may be fetched and executed to manage warehouse over a network service. The memory may include any non-transitory storage device including, for example, volatile memory such as RAM, or non-volatile memory such as EPROM, flash memory, and the like.
5 [0053] The interface(s) may include a variety of interfaces, for example, interfaces for data input and output devices referred to as I/O devices, storage devices, and the like. The interface(s) may facilitate communication of the GISD system 100 with various devices, such as first switch, second switch, draw wire potentiometer sensor, ECU and display device. The interface(s) may also provide a
10 communication pathway for one or more components of the GISD system 100.
[0054] The gear shift intention detection module 105 may be implemented as a combination of hardware and programming (for example, programmable instructions) to implement one or more functionalities. In examples described herein, such combinations of hardware and programming may be implemented in 15 several different ways. For example, the programming for the gear shift intention detection module 105 may be processor executable instructions stored on a non-transitory machine-readable storage medium and the hardware for the gear intention detection module 105 may include a processing resource (for example, one or more processors), to execute such instructions. In the present examples, the machine-20 readable storage medium may store instructions that, when executed by the processing resource, implement the gear shift intention detection module 308. In such examples, the GISD system 100 may include the machine-readable storage medium storing the instructions and the processing resource to execute the instructions or the machine-readable storage medium may be separate but 25 accessible to the GISD system 100 and the processing resource. In other examples, the gear shift intention detection module 105 may be implemented by electronic circuitry.
[0055] In operation, the gear shift intention detection module 105 receives switch signals from the first switch and the second switch 102 when the gear lever
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activate the first switch 101 by moving toward the low speed rank and activate the second switch 102 by moving toward the fifth and reverse speed rank. The gear shift intention detection module 105 has a pre-stored table based on state of the gear lever with gears. The state of gears is engaging, dis-engaging, and engaged. 5 According to state of gears, status of the first switch 101 and the second switch 102 and terminal point of the draw wire potentiometer sensor 103 is defined.
[0056] Table 2

Gear State First Sensor 101 Second Sensor 102 Draw wire potentiometer Sensor 103
1 Engaged 0 1 T1

Engaging 0 1 T5

Disengaging 0 1 T3
2 Engaged 0 1 T2

Engaging 0 1 T6

Disengaging 0 1 T4
3 Engaged 1 1 T1

Engaging 1 1 T5

Disengaging 1 1 T3
4 Engaged 1 1 T2

Engaging 1 1 T6

Disengaging 1 1 T4
12

5 Engaged 1 0 T1

Engaging 1 0 T5

Disengaging 1 0 T3
R Engaged 1 0 T2

Engaging 1 0 T6

Disengaging 1 0 T4
Neutral 1 1 T
[0057] The gear shift intention detection module 105 receives switch signals from the first switch and the second switch and voltage output signals, i.e., terminals and compare with the table 2. Upon comparison, the real time state of the gear lever 5 is determined and informed to engine management system for managing engine rpm. Further, the engaged state or engaged gear is displayed in the display device 500 coupled with the GISD system 100.
[0058] In an embodiment, the GISD system 100 may be provided in the engine control unit (ECU) of the vehicle and display device 500 is coupled to the ECU via 10 CAN.
[0059] In an aspect, the gear shift intention detection module 105 determine gear shift intention based on the received voltage output signal (Vo) for high speed rank, i.e., third and fourth gear where terminal is neutral or ‘T’.
[0060] In an aspect, the gear shift intention detection module 105 determine 15 engaged gears based on the received switch signals and the received voltage output signal (Vo) and displayed in the coupled display device 500.
[0061] In an aspect, the gear shift intention detection module 105 determine state of the gear shift lever based on the received switch signals and the received
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voltage output signal (Vo). The state of gear shift lever are Engaging, Disengaging, and Engaged.
[0062] Referring to fig. 5, the GSID system 100 sends detected state of gear shift lever 104 to Engine Management System (EMS) via the ECU to manage RPM 5 of engine 400 to provide smooth gear shifting.
[0063] Thus, with the implementation of the present subject matter, real time gear shift intention of driver is detected with accuracy to provide smooth gear shifting and managing engine RPM to increase fuel efficiency and efficiency of the engine.
10 [0064] FIG. 6 illustrates a method 600 for detecting gear shift intention of driver, according to an implementation of the present disclosure. The order in which the method 600 is described is not intended to be construed as a limitation, and any number of the described method blocks can be combined in any appropriate order to carry out the method 600 or an alternative method. Additionally, individual
15 blocks may be deleted from the method 500 without departing from the scope of the subject matter described herein.
[0065] At block 602, the method 600 includes receiving signal from first switch 101 and the second switch 103 to detect position of the gear shift lever. If the first switch 101 and the second switch 103 are in closed position means output is ‘1’, 20 high speed gears, such as third and fourth gear is to be selected.
[0066] At block 604, the method 600 includes receiving, by the gear shift intention detection module 105, voltage output signals ‘Vo’ from the draw wire potentiometer sensor 103.
[0067] At block 606, gear shift intention is determined based on received 25 voltage output signals ‘Vo’ and signals from switches by the gear shift intention detection module 105. The gear shift intention detection module 105 matches the received switch signals and voltage output signals ‘Vo’ in the table 2 to determine state of the gear shift lever 104.
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[0068] At block 608, the state of the gear shift lever 104 is displayed in the display device 500 through the ECU or through direct coupling.
[0069] Thus, with the implementation of the method 600 of the present subject matter, the GSID system 100 detects gear shift intention of the driver accurately 5 with draw wire potentiometer sensor 103.
[0070] Further, the determined or detected state of the gear shift lever 104 is forwarded to the engine control unit (ECU) for managing the engine RPM in better way to achieve smooth gear shifting and high fuel efficiency along with high engine efficiency. The method 700 discloses implement of the GISD system 100 to 10 improve engine RPM.
[0071] At block 702, the ECU 200 receives the state of gear shift lever, i.e., gear shift intention signal from gear shift intention detection system.
[0072] At block 704, the ECU process the received gear shift lever state signal and send the processed signal to engine management system (ECM).
15 [0073] At block 706, the engine management system (ECM) manage the engine RPM based on current the state of gear shift lever.
[0074] Technical advantages:
[0075] With the managed engine RPM, a less skilled driver can manage smooth gearshifts.
20 [0076] With implementation of the present GISD system, driver does not need to release accelerator Pedal while shifting Gears. Therefore, quick shifts are possible.
[0077] Further, the State of Gear Lever can also be used to automate the clutch operation by detecting the driver’s intension, i.e., Engaging or Disengaging a Gear.
25 [0078] The above description does not provide specific details of the manufacture or design of the various components. Those of skill in the art are
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familiar with such details, and unless departures from those techniques are set out, techniques, known, related art or later developed designs and materials should be employed. Those in the art can choose suitable manufacturing and design details.
[0079] It should be understood, however, that all of these and similar terms are 5 to be associated with the appropriate physical quantities and are merely convenient labels applied to these quantities. Unless specifically stated otherwise, as apparent from the discussion herein, it is appreciated that throughout the description, discussions utilizing terms such as “receiving,” or “transmitting,” or the like, refer to the action and processes of an electronic control unit, or similar electronic 10 computing device, that manipulates and transforms data represented as physical (electronic) quantities within the control unit’s registers and memories into other data similarly represented as physical quantities within the control unit memories or registers or other such information storage, transmission or display devices.
[0080] Further, the terminology used herein is for the purpose of describing 15 particular embodiments only and is not intended to be limiting of the disclosure. It will be appreciated that several of the above-disclosed and other features and functions, or alternatives thereof, may be combined into other systems or applications. Various presently unforeseen or unanticipated alternatives, modifications, variations, or improvements therein may subsequently be made by 20 those skilled in the art without departing from the scope of the present disclosure as encompassed by the following claims.
[0081] The claims, as originally presented and as they may be amended, encompass variations, alternatives, modifications, improvements, equivalents, and substantial equivalents of the embodiments and teachings disclosed herein, 25 including those that are presently unforeseen or unappreciated, and that, for example, may arise from applicants/patentees and others.
[0082] It will be appreciated that variants of the above-disclosed and other features and functions, or alternatives thereof, may be combined into many other different systems or applications. Various presently unforeseen or unanticipated
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alternatives, modifications, variations, or improvements therein may be subsequently made by those skilled in the art which are also intended to be encompassed by the following claims.

WE CLAIM

A gear shift intention detection (GSID) system (100) for detecting intention of gear shift in manual gear transmission system, the GSID system (100) comprising:
a first switch (102) provided on left hand side of gear shift lever (104) to detect selection of low speed rank;
a second switch (103) provided on right hand side of the gear shift lever (104) to detect selection of fifth and reverse gear rank;
a draw wire potentiometer Sensor (104) coupled with the gear shift lever (104); and
a gear shift intention detect module (105) coupled to the first switch (103), the second switch (104) and the draw wire potentiometer Sensor (104), to:
receive switch signals from the first switch (102) and the second switch (103);
receive voltage output signal (Vo) from the draw wire potentiometer sensor (104); and
determining gear shift intention based on the received switch signals and the received voltage output signal (Vo).
The GSID system (100) as claimed in claim 1, further comprising determining gear shift intention based on the received voltage output signal (Vo).
The GSID system (100) as claimed in claim 1, further comprising determining engaged gears based on the received switch signals and the received voltage output signal (Vo).
The GSID system (100) as claimed in claim 1, further comprising determining state of the gear shift lever (104) based on the received switch

signals and the received voltage output signal (Vo), the state of gear shift lever (104) are Engaging, Disengaging, and Engaged.
The GSID system (100) as claimed in claim 1, further comprising sending state of gear shift lever (104) to Engine Management System (ECM) to manage engine RPM.
The GSID system (100) as claimed in claim 1, wherein the switch signals from the first switch (102) indicate selection of low speed rank, the low speed rank indicate selection of first gear or second gear.
The GSID system (100) as claimed in claim 1, wherein the switch signals from the second switch (102) indicate selection of fifth and reverse speed rank, the fifth and reverse speed rank indicate selection of fifth gear or reverse gear.
A method (600) for detecting gear shift intention in manual gear transmission system having a gear shift lever (104), the method (600) comprising:
receiving (602), by gear shift intention detection module (105), switch signals of first switch (102) and second switch (103) activate by movement of the gear shift lever (104);
receiving (604), by the gear shift intention detection module (105), voltage output signal (Vo) from a draw wire potentiometer sensor (104) coupled to the gear shift lever (104); and
determining (606), by the gear shift intention detection module (105), gear shift intention by the received switch signals and the received voltage output signal (Vo).
The method (600) as claimed in claim 8, further comprising determining high speed rank gear shift intention based on the received voltage output signal (Vo).

The method (600) as claimed in claim 8, further comprising determining engaged gears based on the received switch signals and the received voltage output signal (Vo).
The method (600) as claimed in claim 8, further comprising determining state of the gear shift lever (104) based on the received switch signals and the received voltage output signal (Vo), the state of gear shift lever (104) are Engaging, Disengaging, and Engaged.
The method (600) as claimed in claim 8, further comprising sending state of gear shift lever (104) to Engine Management System (ECM) to manage engine RPM.
The method (600) as claimed in claim 1, wherein the switch signals from the first switch (102) indicate selection of low speed rank, the low speed rank indicate selection of first gear or second gear.
The method (600) as claimed in claim 1, wherein the switch signals from the second switch (102) indicate selection of fifth and reverse speed rank, the fifth and reverse speed rank indicate selection of fifth gear or reverse gear.