DESC:FIELD OF THE INVENTION:
[001] The present invention relates to a fuel supply system for an automotive vehicle, and more particularly to a fuel supply system for automotive vehicle driven by a gaseous fuel and a method thereof.
BACKGROUND TO THE INVENTION
[002] With rising concerns of global warming, aggravating emissions, and depleting fossil fuel resources, clean technologies are much needed to cater to the transportation needs of the fast-paced world. The conventional automotive vehicles running on petrol/ diesel are popularly being converted into vehicles running on environmentally acceptable gaseous fuels such as liquid petroleum gas (LPG), compressed natural gas (CNG), biogas, and the like.
[003] However, there are many technical challenges and limitations to such conversions. In existing arts, cranking of an engine in such automotive vehicles driven by gaseous fuels is achieved through electric self-start technology. It is difficult to crank the engine manually through a hand-start or a kick start mechanism.
[004] The user fails to manually start the automotive vehicle driven by gaseous fuel even after multiple trials and putting in lot of efforts. Though compression ratio for LPG or CNG fuel is less, manual start-ability is difficult to achieve due to incidences of flooding of gaseous fuel when the engine is being started.
[005] The electrical self-start is a well-known technology for cranking the engine of the automotive vehicle. The electric self-start utilizes a starter motor mechanism to start the engine. The technology of electric self-start system is expensive and in case of malfunctioning of the electrical self-start system of such automotive vehicles driven by gaseous fuel, starting the vehicle becomes a challenge. In dual fuel based automotive vehicles that operate on both petrol mode and gaseous fuel (LPG/ CNG) mode, if there is no backup petrol fuel available in petrol fuel tank and electric self-start system malfunctions, it becomes problematic and troublesome for the user to start the automotive vehicle.
[006] Therefore, there is a need to address the aforementioned deficiencies and inadequacies to improve the manual start-ability of the automotive vehicle.

OBJECT OF THE INVENTION
[007] It is an object of the present invention to provide a fuel supply system to improve start-ability of an automotive vehicle, particularly to improve manual start-ability of the automotive vehicle driven by gaseous fuels.
[008] Another object of the present invention is to provide the fuel supply system to prevent flooding of the gaseous fuel in the engine at the time of starting the engine of the automotive vehicle by using a flow control device, thereby improving startability.
[009] Yet another object of the present invention is to provide the fuel supply system and a method to control supply of gaseous fuel to an engine from a pressure regulator in a fuel line of the automotive vehicle.
[010] The further object of the present invention is to provide the fuel supply system, conveniently applicable for a two wheeled/ three wheeled/ four wheeled automotive vehicle such as a motorcycle, scooter, auto-rickshaw, car, and the like.

SUMMARY OF THE INVENTION
[011] With above-mentioned objects in view, the present invention provides a fuel supply control system for an automotive vehicle to control supply of a gaseous fuel in a fuel line of an engine of the vehicle.
[012] According to first exemplary embodiment, a fuel supply system for automotive vehicle driven by gaseous fuel is provided. The fuel supply system includes a fuel tank to store gaseous fuel, and a fuel line to supply gaseous fuel from the fuel tank to an engine of the automotive vehicle. The fuel line includes a pressure regulator to regulate pressure of gaseous fuel received from the fuel tank. The fuel line includes a gas mixing apparatus to receive the gaseous fuel at a reduced pressure from the pressure regulator, and air from air supply means to mix and supply an air-fuel mixture to the engine.
[013] The fuel line includes a fuel supply control system having a controller including a memory and a processing unit. The fuel supply control system includes a flow control device mounted in the fuel line. Further, the fuel supply control system includes one or more sensors to measure one or more predefined parameters of the vehicle operation and to send one or more feedback to the controller. The flow control device is installed between the pressure regulator and the gas mixing apparatus. The controller controls the operation of flow control device based on one or more feedback from one or more sensors.
[014] According to another exemplary embodiment, the flow control device is a solenoid valve to allow or to stop supply of gaseous fuel to the gas mixing apparatus.
[015] According to another exemplary embodiment, the one or more sensors include an ignition switch sensor, an engine speed sensor, and a crack sensor.
[016] According to another exemplary embodiment, the one or more predefined parameters comprise engine cranking, ignition switch ON condition and OFF condition, engine speed (engine RPM), and rate of change of engine RPM.
[017] According to another exemplary embodiment, the fuel supply control system is configured to switch OFF the flow control device if the ignition switch is in OFF condition and the vehicle is not in operation.
[018] According to another exemplary embodiment, the control system is configured to switch ON the flow control device for a pre-defined duration ‘T’ based on the feedback of ignition switch in ON condition, and switch OFF the flow control device after completion of the pre-defined duration ‘T’, if engine cranking is not started within the pre-defined duration ‘T’.
[019] According to another exemplary embodiment, the fuel supply control system is configured to switch OFF the flow control device if the engine RPM is zero or at a value above zero, and the ignition switch is in OFF condition.
[020] According to another exemplary embodiment, the fuel supply control system is configured to switched ON the flow control device if the engine RPM is above zero, and the ignition switch is in ON condition.
[021] According to another exemplary embodiment, the fuel supply control system is configured to switch OFF the flow control device if the engine RPM is less than a pre-defined speed and reducing towards engine shut-off condition and the ignition switch is in ON condition.
[022] According to another exemplary embodiment, a first hose of the fuel line connects an inlet end of the flow control device with the pressure regulator. According to another exemplary embodiment, a second hose of the fuel line connects an outlet end of the flow control device with the gas mixing apparatus, and the flow control device involves a swivel end connector at the outlet end joining the second hose.
[023] According to another exemplary embodiment, the flow control device is directly mounted on the gas mixing apparatus.
[024] Furthermore, according to second exemplary embodiment, method for fuel supply for automotive vehicle driven by gaseous fuel, the method includes steps of storing gaseous fuel in a fuel tank; and supplying gaseous fuel, by a fuel line, from the fuel tank to the engine of the automotive vehicle.
[025] The step of supplying gaseous fuel, includes a pressure regulator regulating pressure of gaseous fuel received from the fuel tank in the fuel line and a gas mixing apparatus receiving gaseous fuel at a reduced pressure from the pressure regulator. Further, the step of supplying gaseous fuel air from an air supply means to mix and supply an air-fuel mixture to the engine; and controlling supply of fuel by a controller comprised of a memory and a processing unit.
[026] The step of controlling supply of fuel includes steps of measuring one or more predefined parameters of the vehicle operation and sending one or more feedback, by one or more sensors, to the controller. Further, the step of controlling supply of fuel includes controlling, by the controller, a flow control device mounted in the fuel line. The step involves installing the flow control device between the pressure regulator and the gas mixing apparatus. Further, the step involves controlling the operation of flow control device based on the one or more feedback from the one or more sensors.
[027] According to another exemplary embodiment, the method includes a step of switching OFF the flow control device if the ignition switch is in OFF condition, and the vehicle is not in operation.
[028] According to another exemplary embodiment, the method includes switching ON the flow control device for a pre-defined duration ‘T’ based on the feedback of ignition switch ON, and switching OFF the flow control device after completion of the pre-defined duration ‘T’, if engine cranking is not started within the pre-defined duration ‘T’.
[029] According to another exemplary embodiment, the method includes switching OFF the flow control device if engine RPM is zero or above zero, and the ignition switch is in OFF condition;
[030] According to another exemplary embodiment, the method includes switching ON the flow control device, if engine RPM is above zero and the ignition switch is in ON condition.
[031] According to another exemplary embodiment, the method includes switching OFF the flow control device, if engine RPM is less than a pre-defined speed and reducing towards engine shut-off condition, and the ignition switch is in ON condition.
Breif Description of the Drawings
[032] The vehicle of the present invention may be more fully understood from the following description of preferred embodiments thereof, made with reference to the accompanying drawings in which:
[033] Figure 1 illustrates a schematic outline of a fuel supply system of an automotive vehicle driven by a gaseous fuel, in accordance with an existing art;
[034] Figure 2 illustrates a schematic outline of a fuel supply system of an automotive vehicle mounting a flow control device operated and controlled by a fuel supply control system, in accordance with an embodiment of the present invention;
[035] Figure 3a illustrates exemplary embodiments of the fuel supply system including an outlet end of the flow control device connecting with the gas mixing apparatus via a hose H2, in accordance with an embodiment of the present invention;
[036] Figure 3b illustrates exemplary embodiments of the fuel supply system including an outlet end of the flow control device directly mounting on the gas mixing apparatus, in accordance with an embodiment of the present invention;
[037] Figure 4 to 6 illustrates the fuel line having a CNG fuel system installed on a chassis of a three wheeled automotive vehicle, in accordance with an embodiment of the present invention;
[038] Figure 7-9 illustrates the fuel line having a LPG fuel system installed on a chassis of a three wheeled automotive vehicle, in accordance with an embodiment of the present invention;
[039] Figure 10 illustrates a block diagram of elements of the fuel supply control system and their interaction, in accordance with an embodiment of the present invention;
[040] Figure 11a-11e illustrates a schematic outline of a control strategy of the fuel supply control system and a method for fuel supply, to allow or to stop flow of gaseous fuel to the engine for improved startability, in accordance with an embodiment of the present invention;

Detailed Description
[041] The following description is of exemplary embodiments of the invention only, and is not intended to limit the scope, applicability, or configuration of the invention. Rather, the following description is intended to provide a convenient illustration for implementing various embodiments of the invention. As will become apparent, various changes may be made in the function and arrangement of the elements described in these embodiments without departing from the scope of the invention as set forth herein. It should be appreciated that the description herein may be adapted to be employed with alternatively configured devices having different shapes, components, attachment mechanisms, and the like and still fall within the scope of the present invention. Thus, the detailed description herein is presented for purposes of illustration only and not of limitation.
[042] Reference in the specification to “one embodiment” or “an embodiment” is intended to indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least an embodiment of the invention. The appearances of the phrase “in one embodiment” or “an embodiment” in various places in the specification are not necessarily all referring to the same embodiment.
[043]
[044] Figure 1 illustrates a schematic outline of a fuel supply system of an automotive vehicle, driven by a gaseous fuel, in accordance with an existing art. The fuel supply system transfers high-pressure gas from a gaseous fuel tank (1) through a fuel line by opening a control valve (2). Thereafter, a pressure regulator (3) in the fuel line reduces the pressure of the gaseous fuel to a level compatible with an engine (7) of the automotive vehicle. Thereafter, fuel is supplied into a gas mixing apparatus (4) where the fuel mixes with air introduced from an air supply means (5) and finally introduced into the engine (7) via a throttle body (6).
[045] In above-mentioned existing art, at the time of start of the engine (7), unconsumed leftover gaseous fuel in the fuel line from last active fuel cycle of the engine (7) floods into the engine (7) along with freshly released gaseous fuel from the pressure regulator (3). Such flooding of fuel causes supply of rich air-fuel mixture into the engine (7), which obstructs it’s starting. If such an automotive vehicle has a manual, i.e. hand or kick operated start mechanism for starting the engine (7), flooding of fuel becomes severely detrimental to the engine (7) getting started, even after the user puts lots of effort. Therefore, the above-mentioned conventional fuel supply system suffers from poor manual start-ability. Other major concern is, high amount of unburnt and partially burned fuel gets released through exhaust due to rich air-fuel mixture supplied to the engine (7) which pollutes the environment.
[046] The present invention discloses a solution to above-mentioned problem and improves manual startability of the automotive vehicle, particularly making hand-start feasible and convenient for the user in the automotive vehicles driven by gaseous fuels. Further, the present invention is, in general, applicable for all type of automotive vehicles (two wheeled/ three wheeled/ four wheeled), driven by gaseous fuels such as CNG and LPG as well as by petrol fuel, to prevent initial flooding of the fuel and improve manual start-ability of the automotive vehicle.
[047] Figure 2 illustrates a schematic outline of a fuel supply system (1000) of an automotive vehicle involving a flow control device (108) of a fuel supply control system (300) [as illustrated in Figure 10], in accordance with an embodiment of the present invention. The control valve (102) is a solenoid valve, which is electronically controlled or a similar gate device, such as a servo motor controlled valve, any electro-mechanical valve. The fuel supply system (1000) supplies high-pressure gas from a gaseous fuel tank (101) through a fuel line by opening a control valve (102).
[048] The gaseous fuel from the control valve (102) enters into a pressure regulator (103). The pressure regulator (103) reduces the pressure of the gaseous fuel to a level compatible with an engine (107) of the automotive vehicle. A flow control device (108) is installed in the fuel line after the pressure regulator (103) and before a gas mixing apparatus (104). Switching ON the flow control device (108) allows the supply of the gaseous fuel to the gas mixing apparatus (104). Switching OFF the flow control device (108) stops the supply of the gaseous fuel to the gas mixing apparatus (104).
[049] The gaseous fuel is supplied into a gas mixing apparatus (104) via the flow control device (108) for mixing the gaseous fuel with air supplied from an air supply means (105). In an exemplary embodiment, air from outside environment enters into an air inlet hose (105a) and supplied to an air filter (105b) for filtration. The filtered air from the air filter is further supplied to the air supply means (105). The filtered air from the air supply means (105) enters in the gas mixing apparatus (104).
[050] Inside the gas mixing apparatus (104), the gaseous fuel mixes with the air, and air-fuel mixture is further supplied to the engine (107) of the automotive vehicle. The air-fuel mixture from the gas mixing apparatus (104) finally enters into the engine (107) via a throttle body (106). In an exemplary embodiment of the invention, the throttle body (106) is comprised of a throttle valve. In an additional embodiment of the present invention, the throttle body (106) is replaced by a carburettor.
[051] The flow control device (108), according to an exemplary embodiment of present invention is a solenoid valve compatible to supply a gaseous fuel (CNG or LPG) which is operated electronically by the fuel supply control system (300). In another exemplary embodiment, the flow control device (108) is an electronic gate device, such as a servo motor controlled valve or any electro-mechanical valve. Switching ON the flow control device (108) opens a supply gate of the solenoid valve allowing the supply of the gaseous fuel to the gas mixing apparatus (104). Switching OFF the flow control device (108) opens a supply gate of the solenoid valve stopping the supply of the gaseous fuel to the gas mixing apparatus (104).
[052] The flow control device (108) is controlled by the fuel supply control system (300). The fuel supply control system (300) operates the switching ON/ OFF of the flow control device (108) based on one or more electronic signals/ feedback received for one or more predefined parameters including engine cranking, status of ignition switch (i.e., ignition switch is in ON condition or OFF condition), speed of the engine (107), rate of change of speed of the engine (107) (i.e., acceleration/ deceleration).
[053] Figure 4 and Figure 9 depicts packaging of the flow control device (108) of the fuel supply control system (300) between the pressure regulator (103) and the gas mixing apparatus (104) in the fuel supply system (1000). In a preferred embodiment, two hoses (H1, H2) are provided in the fuel supply system (1000): a first hose (H1) from the pressure regulator (103) to the flow control device (108), and a second hose (H2) from the flow control device (108) to the gas mixing apparatus (104), [As illustrated in Figure 3a]. Such an arrangement provides ease of assembly, servicing and manufacturability along with achieving an improved start-ability. The flow control device (108) is kept as proximate as possible to gas mixing apparatus to prevent flooding of fuel effectively.
[054] The two hoses (H1, H2) are connected with the flow control device (108) at two joineries. The two joineries of the two hoses (H1, H2) require to be intact and secure with the flow control device (108) even during dynamic operation of the automotive vehicle. As the engine (107) rocks during acceleration and deceleration, there should not be any leakage from the flow control device (108) at the two joineries.
[055] Therefore, the flow control device (108) is mounted on a support bracket rigidly secured on a chassis (200) of the automotive vehicle. The flow control device (108) is mounted at a safe distance from any other part of the automotive vehicle so that there is no physical contact of any other part with the flow control device (108) due to dynamic motion. Accordingly, the support bracket is designed and a space is created on the chassis (200) of the automotive vehicle to mount the support bracket of the solenoid valve (108).
[056] Orientation and position of the flow control device (108) in vehicle co-ordinate system is adaptable differently for different vehicle types, such as for LPG or CNG driven vehicles illustrated in figures 4 to 9. Figures 4 to 6 illustrates CNG fuel system installed on a chassis (200) of a three wheeled automotive vehicle with a fuel line and the flow control device (108) installed in the fuel line, which is operated and controlled by fuel supply control system (300), in accordance with an embodiment of the present invention. Figures 7 to 9 illustrates LPG fuel system installed on a chassis (200) of a three wheeled automotive vehicle with the fuel line and the flow control device (108) installed in the fuel line, which is operated and controlled by a fuel supply control system (300), in accordance with an embodiment of the present invention.
[057] In all exemplary embodiments, as illustrated in Figure 4 to 9, the electrical connections to the flow control device (108) is routed through hoses (H1, H2) so that there is no stretch or pull in it after the flow control device (108) is assembled in its position. An end of the flow control device (108) proximate to the engine (107) is provided with a swivel end connector as joineries, so that the second hose (H2) [As illustrated in Figure 3a] does not get pulled or stretched during the dynamic operation of the vehicle.
[058] In an additional embodiment of the present invention, the flow control device (108) is directly integrated with the gas mixing apparatus (104) in the fuel supply system (1000), and no second hose (H2) is required [As illustrated in Figure 3b]. The first hose (H1) flexibly joined to receive variations during the Engine rocking in dynamic condition.
[059] Furthermore, minimum bend radius of the two hoses (H1, H2) is decided based on stiffness of material of the two hoses (H1, H2) and size of the section of the two hoses (H1, H2), to assemble the two hoses (H1, H2) without any pinching.
[060] Figure 10 illustrates a block diagram of elements of the fuel supply control system (300) and their interaction, in accordance with an embodiment of the present invention. The fuel supply control system (300) includes a controller (301) receiving one or more feedback from one or more sensors (320) measuring the one or more predefined parameters and operates the flow control device (108) based on the one or more feedback received, to implement a pre-defined control strategy.
[061] The one or more sensors (320) include an ignition switch sensor (305), an engine speed sensor (310), a crack sensor, and a like. The controller (301) is a computing device including a memory and a processing unit, capable of receiving and processing one or more feedback (electronic signal) received from one or more sensors and perform further control of the flow control device (108) based on the control strategy. The one or more sensors (320) are installed in the automotive vehicle to sense the one or more parameters of the automotive vehicle operation. The controller (301) controls the operation of flow control device (108) based on the one or more feedback from the one or more sensors. In an exemplary embodiment of the invention, the controller (301) is a part of ECU (electronic control unit) or VCU (Vehicle control unit) or CDI (Capacitor Discharge Ignition).
[062] The control strategy of the fuel supply control system (300) includes switching ON the flow control device (108) for a pre-calibrated duration, when ignition key is in ON condition, and post completion of the duration the flow control device (108) is switched OFF. The control strategy includes post cranking, the flow control device (108) remaining switched ON till the engine (107) crank is rotating above a pre-defined speed. However, the flow control device (108) is switched OFF when the engine (107) speed falls below the pre-defined speed, irrespective of the ignition key is in ON condition or OFF condition. The pre-defined speed is a low speed at which the engine (107) tends to stop operating. Switching OFF the flow control device (108) when the engine (107) speed falls below the pre-defined speed, prevents flooding of gas fuel inside the engine (107), when the engine (107) is inactive and not operating.
[063] The fuel supply control system (300) as mentioned above is applicable for engine (107) having edge firing through a single spark or twin spark with transistor coil ignition (TCI) with DC capacitor discharge ignition (CDI). However, more effective improvement in startability is observed for engines having edge firing with single spark ignition, in gaseous fuel driven, petrol fuel driven, and dual fuel driven automotive vehicles. The edge firing through a single spark with transistor coil ignition (TCI) comprises a fixed pip on magneto rotor to provide a pick up signal.
[064] When the automotive vehicle is in a gas mode (the automotive vehicle being driven by the gaseous fuel), high ignition advance is provided at starting and at idling of the engine (107) to achieve high idle speed. In the engine (107) equipped with a carburettor, slide lift at idling is crucial to control idle speed in the gas mode. This is because higher slide lift results in higher air intake into the carburettor, which results in higher vacuum of the gas mixing apparatus (104), increasing the gas flow from pressure regulator (103) to the engine (107). Higher amount of air-gas mixture into the engine (107) results in higher engine speed. For achieving higher lift of the slide of carburettor, ignition timing for the petrol mode (the automotive vehicle being driven by petrol fuel, in duel fuel vehicles) is optimized by a computation strategy.
[065] Figure 11a to 11e illustrates an exemplary control strategy of the fuel supply control system and steps involved in a method for fuel supply for automotive vehicle driven by gaseous fuel, according to an exemplary embodiment of the invention. The method/ control strategy controls a flow control device (108) to allow or to stop flow of gaseous fuel based on one or more parameters.
[066] As illustrated in Figure 11a, at step S1, the fuel supply control system (300) senses the automotive vehicle is not operating and the ignition switch is in OFF condition. Thereafter, at step S2, the flow control device (108) is kept switch OFF by the fuel supply control system (300).
[067] As illustrated in Figure 11b, at step S3, the fuel supply control system (300) senses ignition switch is in ON condition. Thereafter, at step S4, the flow control device (108) is switch ON by the fuel supply control system (300) for a pre-defined duration ‘T’. If engine cranking not started at step S4’ after completion of the pre-defined duration ‘T’, the flow control device (108) is switch OFF by the fuel supply control system (300), at step S5. If engine cranking started at step S4’’ after completion of the pre-defined duration ‘T’, the flow control device (108) remains switched ON by the fuel supply control system (300), at step S5’.
[068] As illustrated in Figure 11c, at step S6, the fuel supply control system (300) senses engine speed (RPM) is zero or above zero. Also, at the same time, at step S7, the fuel supply control system (300) senses the ignition switch is in OFF condition. Thereafter, at step S8, the flow control device (108) is kept switch OFF by the fuel supply control system (300).
[069] As illustrated in Figure 11d, at step S9, the fuel supply control system (300) senses engine RPM is above zero. Also, at the same time, at step S10, the fuel supply control system (300) senses the ignition switch is in ON condition, i.e.- the engine (107) is being started. Thereafter, at step S11, the flow control device (108) is switch ON by the fuel supply control system (300).
[070] As illustrated in Figure 11e, at step S12, the fuel supply control system (300) senses engine speed (RPM) is less than a pre-defined speed, when the engine (107) tends to stop operating/ dying down due to any reason. However, at the same time, at step S13, the fuel supply control system (300) senses the ignition switch is in ON condition. As engine (107) is tending to stop operating, at step S14, the flow control device (108) is switch OFF by the fuel supply control system (300).
[071] Modifications and variations to the automotive vehicle described in the present specification may be apparent to skilled readers of this disclosure. Such modifications and variations are deemed within the scope of the present invention.
,CLAIMS:CLAIMS
We Claim:
1. A fuel supply system (1000) for automotive vehicle driven by gaseous fuel, comprising:
a fuel tank (101) to store gaseous fuel;
a fuel line to supply gaseous fuel from the fuel tank (101) to an engine (107) of the automotive vehicle, the fuel line including:
a pressure regulator (103) to regulate pressure of gaseous fuel received from the fuel tank (101);
a gas mixing apparatus (104) to receive the gaseous fuel at a reduced pressure from the pressure regulator (103) and air from an air supply means (105) to mix and supply an air-fuel mixture to the engine (107); and
a fuel supply control system (300) to control flow of gaseous fuel to the engine (107), the fuel supply control system (300) comprising:
a controller (301) including a memory and a processing unit;
one or more sensors (320) to measure one or more predefined parameters of the vehicle operation and to send one or more feedback to the controller (301); and
a flow control device (108) mounted in the fuel line;
wherein the flow control device (108) is installed between the pressure regulator (103) and the gas mixing apparatus (104), and
wherein the controller (301) controls the operation of flow control device (108) based on the one or more feedback from the one or more sensors (320).
2. The system (1000) as claimed in claim 1, wherein the flow control device (108) is a solenoid valve to allow or to stop supply of gaseous fuel to the gas mixing apparatus (104).
3. The system (1000) as claimed in claim 1, wherein the one or more sensors comprise an ignition switch sensor (305), an engine speed sensor (310), and a crack sensor.
4. The system (1000) as claimed in claim 1, wherein the one or more predefined parameters comprise engine cranking, ignition switch ON condition and OFF condition, engine speed (engine RPM), and rate of change of RPM.
5. The system (1000) as claimed in claim 1, wherein the fuel supply control system (300) is configured to switch OFF the flow control device (108) if the ignition switch is in OFF condition and the vehicle is not in operation.
6. The system (1000) as claimed in claim 1, wherein the control system is configured to
switch ON the flow control device (108) for a pre-defined duration ‘T’ based on the feedback of ignition switch in ON condition, and
switch OFF the flow control device (108) after completion of the pre-defined duration ‘T’, if engine cranking is not started within the pre-defined duration ‘T’.
7. The system (1000) as claimed in claim 1, wherein the fuel supply control system (300) is configured to switch OFF the flow control device (108) if the engine RPM is zero or at a value above zero, and the ignition switch is in OFF condition.
8. The system (1000) as claimed in claim 1, wherein the fuel supply control system (300) is configured to switch ON the flow control device (108) if the engine RPM is above zero, and the ignition switch is in ON condition.
9. The system (1000) as claimed in claim 1, wherein the fuel supply control system (300) is configured to switch OFF the flow control device (108) if the engine RPM is less than a pre-defined speed and reducing towards engine shut-off condition and the ignition switch is in ON condition.
10. The system (1000) as claimed in claim 1, wherein a first hose of the fuel line connects an inlet end of the flow control device (108) with the pressure regulator (103).
11. The system (1000) as claimed in claim 1,
wherein a second hose (H2) of the fuel line connects an outlet end of the flow control device (108) with the gas mixing apparatus (104), and
wherein the flow control device (108) comprises a swivel end connector at the outlet end joining the second hose (H2).
12. The system (1000) as claimed in claim 1, wherein the flow control device (108) is directly mounted on the gas mixing apparatus (104).
13. A method for fuel supply for automotive vehicle driven by gaseous fuel, the method comprises:
storing gaseous fuel in a fuel tank (101);
supplying gaseous fuel, by a fuel line, from the fuel tank to an engine of the automotive vehicle; including:
regulating pressure of gaseous fuel received from the fuel tank (101), by a pressure regulator (103) in the fuel line;
receiving gaseous fuel at a reduced pressure from the pressure regulator (103) and air from an air supply means (105), by a gas mixing apparatus (104) to mix and supply an air-fuel mixture to the engine (107); and
controlling supply of fuel to the engine (107), by a controller (301) comprised of a memory and a processing unit, comprising steps of:
measuring one or more predefined parameters of the vehicle operation and sending one or more feedback, by one or more sensors (320), to the controller (301); and
controlling, by the controller (301), a flow control device (108) mounted in the fuel line between the pressure regulator (103) and the gas mixing apparatus (104),
wherein controlling the operation of flow control device (108) based on the one or more feedback from the one or more sensors (320).

14. The method as claimed in claim 13, wherein the method comprises a step of switching OFF the flow control device (108) if an ignition switch is in OFF condition, and the vehicle is not in operation.
15. The method as claimed in claim 14, wherein the method includes switching ON the flow control device (108) for a pre-defined duration ‘T’ if the ignition switch is in ON condition, and switching OFF the flow control device (108) after completion of the pre-defined duration ‘T’, if engine cranking is not started within the pre-defined duration ‘T’.
16. The method as claimed in claim 14, wherein the method includes switching OFF the flow control device (108) if engine RPM is zero or above zero, and the ignition switch is in OFF condition;
17. The method as claimed in claim 13, wherein the method includes switching ON the flow control device (108), if engine RPM is above zero, and the ignition switch is in ON condition.
18. The method as claimed in claim 13, wherein the method includes switching OFF the flow control device (108), if engine RPM is less than a pre-defined speed and reducing towards engine shut-off condition, and an ignition switch is in ON condition.