FORM 2
THE PATENTS ACT 1970 (as amended)
[39 OF 1970]
&
The Patents Rules, 2003
COMPLETE SPECIFICATION
[See Section 10 and Rule 13]
TITLE OF THE INVENTION
“A VEHICLE SAFETY SYSTEM AND A METHOD THEREOF”
APPLICANT
TATA MOTORS LIMITED
an Indian company having its registered office
at Bombay house, 24 Homi Mody Street, Hutatma Chowk,
Mumbai 400001, Maharashtra, India.
PREAMBLE TO THE DESCRIPTION
The following specification particularly describes the invention and the manner in
which it is to be performed.

FIELD OF THE INVENTION
The present invention relates to a vehicle safety system and a method thereof, and more particularly, the present invention relates to the vehicle safety system and the method thereof, especially to prevent vehicle engine operation during refueling when the fuel door is in open state.
BACKGROUND OF THE INVENTION
It has been observed that many a time’s drivers refuel their vehicles without halting the engines. This could be to attain certain desires like maintaining the temperature inside the vehicle at a particular level, e.g., wanting to leave the heat running in the winter or to leave the air conditioning on in the summer. Substantially, all fuel stations post signs on or near the fuel pumps indicating the dangers associated with refueling a vehicle during operation, and that vehicle engines should be turned off prior to fueling the vehicle. For whatever reason, these warning signs are either not noticed or are disregarded. Such situation may result in various problems like increase in risk of fire or environmental problem as a result of increased vehicle emissions. Therefore, it is necessary to ensure that the engine is at halt while the vehicle is refueled.
US Patent publication number US20030062210A1 discloses a refueling safety system for a vehicle with an automatic transmission system. The system of this US publication discloses automatic halting of the engine directly by the ECU, whenever the switch is in active position and the parking break is applied. Since the ECU is an electronic device, it is very likely that it may receive a fault signal as a result of which, it may directly halt the engine even during running condition. Such situation may result in accidents when the vehicle is on travel.
Therefore, the problem to be solved is to provide an efficient safety system to ensure that the engine remains at halt position during refueling of the vehicle to avoid fire or any such accidents, and the problem is solved in the present invention by a vehicle safety system that comprises of an ECU which receives a

signal from the switch when the fuel door is open and halts the engine once the activation of the switch is confirmed by the body control module, which is wire connected with the switch, thereby ensuring that the signal is not a faulty signal.
OBJECTS OF THE DISCLOSURE
One object of the present disclosure is to provide a vehicle safety system and a method thereof wherein the system halt the engine during fueling of the vehicle.
Another object of the present disclosure is to provide a is to provide a vehicle safety system and a method thereof, wherein the engine management system module receives signal from ECU as well as from body control module, which is wired with the switch, to ensure authenticity of the signal before halting the engine
SUMMARY OF THE INVENTION
An embodiment of the present invention discloses a vehicle safety system comprising a fuel door mounted near a fuel tank opening of the vehicle and capable of pivoting between an open position and a closed position covering said fuel tank; a switch positioned adjacent said fuel door and activated when said fuel door is in the open position, and said switch is deactivated when said fuel door is in the closed position; a electronic control unit (ECU) electrically coupled with said switch to receive a signal when said switch is activated to halt an engine of the vehicle; and a body control module (BCM) coupled with said electronic control module (ECU) and wired with said switch, wherein said electronic control unit (ECU) halt said engine upon receipt of said signal that said switch is activated and confirmed by said body control module (BCM).
In an embodiment of the present invention the electronic control unit transmit said signal to an Engine Management System (EMS) module to halt said engine.

In an embodiment of the present invention the engine management system (EMS) module also receives another signal from body control module (BCM) wired with said switch to ensure that said signal is generated when said switch is activated.
In an embodiment of the present invention the body control module (BCM) receives signal from said engine management system (EMS) module to confirm that said switch is activated.
In an embodiment of the present invention the body control module (BCM) transmits a confirmation signal to said engine management signal (EMS) module to halt said engine.
In an embodiment of the present invention discloses a method for vehicle safety including the steps of activating a switch positioned adjacent to a fuel door mounted near a fuel tank opening of the vehicle when said fuel door is in an open position; transmitting a signal when said switch is activated to an electronic control unit (ECU) electrically coupled with said switch; and halting an engine by said electronic control unit (ECU) after confirming activation of said switch by a body control module (BCM) wired connected with said switch.
In an embodiment of the present invention the halting said engine includes the step of transmitting signal to an engine management system (EMS) module by said electronic control unit (ECU).
In an embodiment of the present invention the halting said engine includes the step of transmitting signal to said body control module by said engine management system (EMS) module to confirm activation of said switch.
BRIEF DESCRIPTION OF DRAWINGS
The disclosure itself, however, as well as a preferred mode of use, further objectives and advantages thereof, will best be understood by reference to the

following detailed description of an illustrative embodiment when read in conjunction with the accompanying figures. One or more embodiments are now described, by way of example only, with reference to the accompanying figures wherein like reference numerals represent like elements and in which:
FIG. 1 illustrates an embodiment of the present invention depicting block diagram of the working of the system;
FIG. 2 illustrates an embodiment of the present invention depicting flow chart reflecting method of vehicle safety.
The figures depict embodiments of the disclosure for purposes of illustration only. One skilled in the art will readily recognize from the following description that alternative embodiments of the system illustrated herein may be employed without departing from the principles of the disclosure described herein.
Referral Numeral:

Reference Numeral Description
1 Signal to reflect opening of fuel door
2 Signal transmitted by switch to ECU
3 Signal transmitted by ECU to EMS Module
4 Signal transmitted by EMS Module to BMS
5 Signal send switch to Switch by BMS
6 Return signal send by switch to BMS
7 confirmation signal send by BMS to EMS module
8 Signal send by EMS to halt engine
10 Fuel door
20 Switch
30 Electronic control unit (ECU)

40 Engine Management System (EMS) Module
50 Body control module (BCM)
DETAILED DESCRIPTION
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 embodiment disclosed may be readily utilized as a basis for modifying or designing other structures 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 spirit and scope of the disclosure as set forth in the appended claims. The novel features which are believed to be characteristic of the disclosure, both as to its organization and method of operation, 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.
An embodiment of the present invention discloses a vehicle safety system and a method thereof to ensure halting of the engine while the vehicle is refueled. The vehicle safety system includes a switch (20) which is connected to the fuel door (10). The fuel door (10) is mounted near a fuel tank opening of the vehicle. The fuel tank is capable of pivoting between an open position and a closed position to cover the fuel tank i.e. the fuel door (10) closes and opens the fuel tank. The switch (20) is positioned adjacent to the fuel door (10). The switch (20) is activated whenever the fuel door (10) is open i.e. in open position, and the switch (20) is deactivated whenever the door is closed i.e. in closed position.

Fig. 1 shows the flow path of the signal. During refueling of the vehicle, the fuel door (10) opens. The opening of the fuel door (10) activates (1) the switch (20). Activation of the switch (20) causes release of a signal (2) which is transmitted to the electronic control unit (ECU) (30), which is electrically coupled with the switch (20). The ECU (30) then further transmit the signal (3) to the engine management system (EMS) module (40) or engine management system (EMS) ECU for halting the engine. In order to confirm the authenticity of the signal, the engine management system (EMS) module (40) sends a signal (4) to body control module (BCM) (50) to check whether the switch (20) is actually activated. The body control module (BCM) (50) is coupled with electronic control unit ECU (30) to receive signal via EMS (40). The BCM (50) thereafter sends a signal (5) to the switch (20) and in return a signal (6) from switch (20) confirms that the switch (20) is activated. This, ensures that unauthentic signal does not result in halting of the vehicle. Thereafter, the BCM (50) sends a confirmation signal (7) to the EMS module (40) that the switch (20) is actually activated. Based on the inputs from ECU (30) and the BCM (50), the EMS module (40) halts the engine of the vehicle while refueling.
Fig. 2 shows the flow diagram explaining the method of the working of vehicle safety system. While refueling of the vehicle, the switch (20) checks whether the contact is broken or not. If the contact is not yet broken i.e. the fuel door (10) is still closed or it is a closed position, no step will be taken by the ECU (30). If the contact is broken i.e. it is an open position, the switch (20) gets activated and transmits the signal (2) to the ECU (30) to halt the engine. ECU thereafter transmit the signal (3) to the EMS module (40) which halts the engine for safety reasons. However, EMS module (40) also checks authenticity of the signal from BCM (50). BCM (50) confirms to EMS module (40) whether the switch (20) is actually activated or not, as BCM (40) is in wire connection or in physical connection with the switch (20). Based on the confirmation received from the BCM (50), the EMS module (40) halts the engine of the vehicle.
7

We claim:
1. A vehicle safety system comprising:
a fuel door (10) mounted near a fuel tank opening of the vehicle and
capable of pivoting between an open position and a closed position
covering said fuel tank;
a switch (20) positioned adjacent said fuel door (10) and activated when
said fuel door (10) is in the open position, and said switch (20) is
deactivated when said fuel door (10) is in the closed position;
a electronic control unit (ECU) (30) electrically coupled with said switch
(20) to receive a signal (1) when said switch (20) is activated to halt an
engine of the vehicle; and
a body control module (BCM) (50) coupled with said electronic control
module (ECU) (30) and wire connected with said switch (20) to
authenticate activation of said switch (20),
wherein said electronic control unit (ECU) (30) halts said engine upon
receipt of said signal (1) and authentication of said signal (1) by said body
control module (BCM) (50).
2. The system as claimed in claim 1, wherein said electronic control unit (ECU) (30) transmits a signal (3) to an Engine Management System (EMS) (40) module to halt said engine.
3. The system as claimed in claim 2, wherein said engine management system module (40) also receives another signal (7) from body control module (BCM) (50) wire connected with said switch (20) to ensure that said signal (3) is generated when said switch (20) is activated.
4. The system as claimed in claim 3, wherein said body control module (BCM) (50) receives a signal (4) from said engine management system module (40) to confirm that said switch (20) is activated.

5. The system as claimed in claim 4, wherein said body control module (50) transmits a confirmation signal to said engine management signal module (40) to halt said engine.
6. A method for vehicle safety including the steps of:
activating a switch (20) positioned adjacent to a fuel door (10) mounted
near a fuel tank opening of the vehicle when said fuel door (10) is in an
open position;
transmitting a signal (2) when said switch (20) is activated to an electronic
control unit (30) electrically coupled with said switch (20); and
halting an engine by said electronic control unit (30) after confirming
activation of said switch (20) by a body control module (50) wire
connected with said switch (20).
7. The method as claimed in claim 6, wherein halting said engine includes the step of transmitting a signal (3) to an engine management system module (40) by said electronic control unit (30).
8. The method as claimed in claim 7, wherein halting said engine includes the step of transmitting a signal (4) to said body control module (50) by said engine management system module (40) to confirm activation of said switch (20).