The embodiments herein generally relate to safety start systems for vehicles, and more particularly to a system and a method for controlling an engine start of a vehicle using an electrical switch, wherein the electrical switch responds to a clutch pedal.
BACKGROUND
[002] Agricultural vehicles such as tractors and other similar vehicles are primarily used in agricultural field operations. Currently, the development of high-power tractors has become the main trend in global industrial development of tractors. With the increasing power of the tractor equipped with various agricultural implements, safety during starting of high-power tractors requires more attention. However, if the operator standing nearby the tractor starts the tractor in gear state condition would lead to sudden run of the tractor resulting in accidents causing injury to operator or other persons nearby the tractor due to negligence of the operator.
[003] Therefore, there exists a need for a system and a method for controlling an engine start of a vehicle, which obviates the aforementioned drawbacks.
OBJECTS
[004] The principal object of embodiments herein is to provide a system and a method for controlling an engine start of a vehicle using an electrical switch,

wherein the operation of the electrical switch is based on the current state of a clutch pedal in the vehicle.
[005] Another object of embodiments herein is to provide a system and a method for controlling an engine start of a vehicle, which prevents starting of an engine when the vehicle is in geared condition and the clutch is in engaged position.
[006] Another object of embodiments herein is to provide a system and a method for disengaging an engine from gears before starting of a vehicle.
[007] Another object of embodiments herein is to provide a system for controlling an engine start of a vehicle, which is reliable and ensures safety starting of the vehicle thereby preventing accidents.
[008] These and other objects of embodiments herein will be better appreciated and understood when considered in conjunction with following description and accompanying drawings. It should be understood, however, that the following descriptions, while indicating embodiments and numerous specific details thereof, are given by way of illustration and not of limitation. Many changes and modifications may be made within the scope of the embodiments herein without departing from the spirit thereof, and the embodiments herein include all such modifications.
BRIEF DESCRIPTION OF DRAWINGS
[009] The embodiments are illustrated in the accompanying drawings, throughout which like reference letters indicate corresponding parts in various

figures. The embodiments herein will be better understood from the following description with reference to the drawings, in which:
[0010] Fig. 1 illustrates a block diagram of a system for controlling an engine start of a vehicle, according to embodiments as disclosed herein;
[0011] Fig. 2 depicts a perspective view of a limit switch coupled to a clutch pedal through a spring, according to embodiments as disclosed herein;
[0012] Fig. 3 depicts a circuit diagram of the system for controlling the engine start of the vehicle, according to embodiments as disclosed herein; and
[0013] Fig. 4 depicts a flowchart indicating a method for controlling the engine start of the vehicle, according to embodiments as disclosed herein, according to embodiments as disclosed herein.

DETAILED DESCRIPTION
[0014] The embodiments herein and the various features and advantageous details thereof are explained more fully with reference to the non-limiting embodiments that are illustrated in the accompanying drawings and detailed in the following description. Descriptions of well-known components and processing techniques are omitted so as to not unnecessarily obscure the embodiments herein. The examples used herein are intended merely to facilitate an understanding of ways in which the embodiments herein may be practiced and to further enable those of skill in the art to practice the embodiments herein. Accordingly, the examples should not be construed as limiting the scope of the embodiments herein.
[0015] The embodiments herein achieve a system and a method for controlling an engine start of a vehicle, which prevents starting of an engine when the vehicle is in geared condition and the clutch is in engaged position. Further, embodiments herein achieve a system for controlling an engine start of a vehicle, which is reliable and ensures safety starting of the vehicle thereby preventing accidents. Referring now to the drawings Figs 1 through 4, where similar reference characters denote corresponding features consistently throughout the figures, there are shown embodiments.
[0016] Fig. 1 illustrates a block diagram of a system (100) for controlling an engine start of a vehicle, according to embodiments as disclosed herein. The system (100) includes a limit switch (102), an ignition circuit (104), a starter motor (106), a neutral gear switch (not shown), a spring (108), as shown in fig. 2),

a mounting bracket (110), as shown in fig. 2), a connector (not shown) and a plurality of couplers (not shown). For the purpose of this description and ease of understanding, the system (100) is explained herein below with reference to controlling the engine start in an agricultural vehicle for safe starting of the agricultural vehicle. However, it is also within the scope of this invention to practice/ implement the system (100) for controlling engine start in any off road vehicle or any other type of vehicle or any other types of machines without otherwise deterring the intended function of the system (100) as can be deduced from the description and corresponding drawings. The vehicle is provided with a clutch interposed between the engine and the drive line, including the transmission. Further, to prevent starting of the engine, while the drive line is connected to engine, a starter safety switch such as the limit switch (102) is implemented in the system (100), between an ignition switch (104S), as shown in fig. 3) and the starter motor (106).
[0017] The limit switch (102) is an electrical switch, operated on engagement of a clutch pedal (P), as shown in fig. 2). The limit switch (102) allows the electric current supply from a battery (B), as shown in fig. 3) to the ignition switch (104S) on engagement of the clutch pedal (P). Further, as soon as the ignition switch (104S) is operated, the supply connection may be completed, and electric current supply is transmitted to the starter motor (106). Examples of the limit switch (102) is at least one of, but not limited to a safety limit switch, a lever type limit switch, a roller plunger type limit switch, a whisker type limit switch, and so on. The connector (not shown) is adapted to connect the limit

switch (102) with the mounting bracket (110). The plurality of couplers (not shown) is adapted to electrically connect the limit switch (102) with the starter motor (106). For example, two couplers (not shown) are fitted on thimbles present on the limit switch (102) and the other coupler is connected to the wire of the starter motor (106) to complete the circuit.
[0018] The ignition circuit (104) is responsible for starting the starter motor (106). The ignition circuit (104) may include a plurality of electrical circuits (not shown). When an action is performed to start the vehicle (such as, but not limited to, an ignition key in the ignition switch (104S) is turned on or a starter button is pressed or an instruction is received from an external entity (such as a mobile device, a wearable device, and so on), a low voltage current from a battery (not shown) flows through the primary windings of an ignition coil (not shown), and back to the battery. The current flow may cause a magnetic field to form around the coil. Further, the ignition circuit (104) includes additional components such as a secondary winding in the coil, a coil wire on external coil distributors, a rotor, a spark plug (not shown), and so on.
[0019] In an embodiment herein, the limit switch (102) may include an actuator mechanically linked to a set of contacts/internal switch (not shown) within the limit switch (102). When an object is in contact with the actuator, the limit switch (102) triggers the contacts to either form or break an electrical connection with the contacts. The limit switch (102) may include a plurality of connectors that may secure a plurality of cables that may be used for connectivity between the electrical components. On the clutch pedal (P) being pressed by the

user, the limit switch (102) is closed. Further, when the limit switch (102) is open, the circuit to the ignition circuit (104) is interrupted and the starter motor (106) may not be operated. When the limit switch (102) is closed, the circuit between the ignition circuit (104) and the starter motor (106) is completed.
[0020] In an embodiment herein, the limit switch (102) is mounted onto the mounting bracket (110) and the limit switch (102) is coupled to the clutch pedal (P) through the spring (108). The neutral gear switch (not shown) is adapted to allow electric current supply from the battery (B) to the limit switch (102) when the vehicle is in a neutral gear position. The neutral gear switch (not shown) is adapted to cut-off electric current supply to the limit switch (102) when the vehicle is in geared condition.
[0021] In an embodiment, the spring (108) is configured to depress and operate the limit switch (102), when the clutch pedal (P) is pressed, and retain its position on the clutch pedal (P) being released and disable the limit switch (102). In an embodiment, the limit switch (102) is configured to generate a first signal on engagement of clutch pedal (P). In an embodiment, disengaging of the engine from the gears can be performed by pressing the clutch pedal (P). Accordingly, when the clutch pedal (P) is pressed, the spring (108) actuates the limit switch (102) which provides the signal to the ignition switch (104S) in first phase and completing the connectivity between the ignition switch (104S) and the starter motor (106). Further, in second phase on the disengagement of the clutch pedal (P), the spring action may be retracted and the power supply to the ignition switch (104S) is cut off and no power supply is transmitted to the starter motor (106).

[0022] In an embodiment, the limit switch (102) is in series with the ignition circuit (104) and the limit switch (102) closes the ignition circuit (104), on engagement of the clutch pedal (P). In an embodiment, the ignition circuit (104) is in series with the starter motor (106) of the vehicle. The ignition circuit (104) is configured to receive the first signal from the limit switch (102), to start the starter motor (106) of the vehicle.
[0023] In an embodiment, the starter motor (106) is in series with the ignition circuit (104). The starter motor (106) is configured to receive a second signal from the ignition circuit (104) to start the engine of the vehicle, based on disengaging the engine from the gear of the vehicle by pressing the clutch pedal (P). Further, the starter motor (106) is configured to receive the second signal from the ignition circuit (104) to start the engine of the vehicle, when the ignition switch (104S) is operated to start the vehicle.
[0024] Fig. 2 is a perspective view of the limit switch (102) coupled to the clutch pedal (P) through the spring (108), according to embodiments as disclosed herein. The clutch pedal (P) is connected to the clutch of the vehicle (not shown). The clutch pedal (P), as shown in the Fig. 2 is pressed to disengage the gears from the engine. Further, the clutch pedal (P) is released to engage the gears with the engine. The limit switch (102) includes connectors which are connected with wires leading to the ignition switch (104S).
[0025] The spring (108) is adapted to actuate the limit switch (102) on engagement of the clutch pedal (P). The spring (108) is adapted to disable the limit switch (102) on dis-engagement of the clutch pedal (P). One end of the

spring (108) is connected to the limit switch (102) and another end of the spring (108) is connected to the clutch pedal (P). The mounting bracket (110) is adapted to mount the limit switch (102).
[0026] FIG. 3 is a circuit diagram of the system (100) for controlling an engine start of the vehicle, according to embodiments as disclosed herein. In an embodiment, the circuit includes the battery (B), the limit switch (102), the ignition circuit (104), and the starter motor (106). In an embodiment herein, the circuit can include a light source (such as Light Emitting Diode (LED), incandescent bulb, fluorescent bulb, a halogen bulb, and so on) to display the position of the gear. The battery (B) is connected in parallel with the starter motor (106). Further, the light source may be connected in parallel with the battery (B) and the starter motor (106). The limit switch (102) and the ignition circuit (104) are connected in series with each other, between the battery (B) and the starter motor (106). The limit switch (102) is connected in series with the ignition circuit (104), and the ignition circuit (104) is configured to start the starter motor (106) in the vehicle, on receiving the first signal from the limit switch (102).The limit switch (102) generates the first signal when the engine of the vehicle is disengaged from the gears, on engagement of the clutch pedal (P).
[0027] Fig. 4 depicts a flowchart indicating a method (400) for controlling the engine start of the vehicle, according to embodiments as disclosed herein, according to embodiments as disclosed herein. For the purpose of this description and ease of understanding, the method (400) is explained herein below with reference to controlling the engine start in an agricultural vehicle for safe starting

of the agricultural vehicle. However, it is also within the scope of this invention to practice/implement the entire steps of the method (400) in a same manner or in a different manner or with omission of at least one step to the method (400) or with any addition of at least one step to the method (400) for controlling engine start in any off road vehicle or any other type of vehicle or any other types of machines without otherwise deterring the intended function of the method (400) as can be deduced from the description and corresponding drawings. At step (402), the method (400) includes generating, by a limit switch (102) connected in series with an ignition circuit (104), a first signal, on engagement of a clutch pedal
(P).
[0028] At step (404), the method (400) includes starting, by the ignition
circuit (104), the starter motor (106) in the vehicle, on receiving the first signal
from the limit switch (102).
[0029] The method (400) includes allowing electric current supply to the limit switch (102) through a neutral gear switch when the vehicle is in a neutral gear position prior to the step (402) of generating, by the limit switch (102) connected in series with the ignition circuit (104), the first signal, on engagement of the clutch pedal (P).
[0030] The method step (402) of generating, by the limit switch (102) connected in series with the ignition circuit (104), the first signal, on engagement of the clutch pedal (P) includes actuating, by a spring (108), the limit switch (102) on engagement of the clutch pedal (P).

[0031] The method step (404) of starting, by the ignition circuit (104), the starter motor (106) in the vehicle, on receiving the first signal from the limit switch (102) includes, operating an ignition switch (104S) of the ignition circuit (104) to start the starter motor (106).
[0032] The method (400) includes disabling, by the spring (108), the limit switch (102) on disengagement of the clutch pedal (P).
[0033] The foregoing description of the specific embodiments will so fully reveal the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modifications within the spirit and scope of the embodiments as described herein.

We claim:

1. A system (100) for controlling an engine start of a vehicle, the system (100)
comprising:
a limit switch (102) connected in series with an ignition circuit (104), wherein
the ignition circuit (104) is configured to start a starter motor (106) in the vehicle, on receiving a first signal from the limit switch (102), wherein the limit switch (102) generates the first signal on engagement of a clutch pedal (P).
2. The system (100) as claimed in claim 1, wherein the system (100) comprises at
least one spring (108) adapted to actuate the limit switch (102) on engagement of
the clutch pedal (P),
wherein
one end of the spring (108) is connected to the limit switch (102) and another end of the spring (108) is connected to the clutch pedal (P).
3. The system (100) as claimed in claim 1, wherein the system (100) comprises a mounting bracket (110) adapted to mount the limit switch (102).
4. The system (100) as claimed in claim 3, wherein the system (100) comprises a connector adapted to connect the limit switch (102) with the mounting bracket (110).

5. The system (100) as claimed in claim 1, wherein the system (100) comprises a
plurality of couplers adapted to electrically connect the limit switch (102) with the
starter motor (106).
wherein
at least two couplers are fitted on thimbles present on the limit switch (102) and the other coupler is connected to the wire of the starter motor (106) to complete the circuit.
6. The system (100) as claimed in claim 2, wherein the spring (108) is adapted to disable the limit switch (102) on dis-engagement of the clutch pedal (P).
7. The system (100) as claimed in claim 1, wherein the system (100) comprises a neutral gear switch adapted to allow electric current supply to the limit switch (102) when the vehicle is in a neutral gear position.
8. A method (400) for controlling an engine start of a vehicle, the method (400) comprising:
generating, by a limit switch (102) connected in series with an ignition circuit (104), the first signal on engagement of a clutch pedal (P); and
starting, by the ignition circuit (104), a starter motor (106) in the vehicle, on receiving the first signal from the limit switch (102).
9. The method (400) as claimed in claim 8, wherein generating, by the limit

switch (102) connected in series with the ignition circuit (104), the first signal on engagement of the clutch pedal (P) comprises,
actuating, by a spring (108), the limit switch (102) on engagement of the clutch pedal (P).
10. The method (400) as claimed in claim 8, wherein the method (400) comprises allowing, by a neutral gear switch, the electric current supply to the limit switch (102) when the vehicle is in a neutral gear position.