Title of Invention	AN AUTOMATIC DEVICE FOR SWITCHING OFF THE IGNITION SYSTEM OF AN AUTOMOBILE WHENEVER IT COMES TO A HALT OVER A CONTINUOUS PREDETERMINED PERIOD OF TIME
Abstract	An automatic device for switching off the ignition system of an automobile whenever it comes to a halt over a continuous predetermined period of time, comprising a sensor for sensing the wheel movement of the automobile; a microcontroller based circuit connected on its input side, to the sensor and on its output side, to the ignition system of the automobile, for receiving, the output signal from the sensor, and switching off the ignition system whenever the sensor senses no wheel movement over a continuous predetermined interval of time; a throttle switch, provided for the throttle and connected to the input side of the microcontroller, said throttle switch being actuated, on opening the throttle, to cause the microcontroller to switch on the ignition system and activate the starter system to re-start the engine, a neutral switch connected to the gear system and to the starer system, the neutral switch disenabling the starter system from re-starting the engine unless, while opening the throttle, the gears are in neutral position, to enable the starter system to re-start the engine.

Title of Invention

AN AUTOMATIC DEVICE FOR SWITCHING OFF THE IGNITION SYSTEM OF AN AUTOMOBILE WHENEVER IT COMES TO A HALT OVER A CONTINUOUS PREDETERMINED PERIOD OF TIME

Abstract

An automatic device for switching off the ignition system of an automobile whenever it comes to a halt over a continuous predetermined period of time, comprising a sensor for sensing the wheel movement of the automobile; a microcontroller based circuit connected on its input side, to the sensor and on its output side, to the ignition system of the automobile, for receiving, the output signal from the sensor, and switching off the ignition system whenever the sensor senses no wheel movement over a continuous predetermined interval of time; a throttle switch, provided for the throttle and connected to the input side of the microcontroller, said throttle switch being actuated, on opening the throttle, to cause the microcontroller to switch on the ignition system and activate the starter system to re-start the engine, a neutral switch connected to the gear system and to the starer system, the neutral switch disenabling the starter system from re-starting the engine unless, while opening the throttle, the gears are in neutral position, to enable the starter system to re-start the engine.

Full Text	This invention relates to a device for switching off the ignition system of an automobile whenever it cornea to a halt over a continuous predetermined period of time. It is common knowledge that an automobile is often brought to a halt, with the engine running. When such a situation occurs over a continuous predetermined period of time, the device proposed herein shuts off the ignition system and, thus, the engine, to save fuel . If the engine is to be re-started, a simple procedure is adopted in order to do so. A safety feature of the said device is that re-starting is made possible only when the vehicle gearing is in neutral position; not otherwise. This feature ia to guard against the possibility of the automobile suddenly lunging forward, during re-starting, as for instance, when the automobile gears are in engaged condition. The said device can be de-activated, whenever necessary, by a manual override switch which, when operated, enables the automobile to work normally. Various other features of the device proposed herein will be apparent from the following further description thereof According to this invention the automatic device for switching off the ignition system of an automobile whenever it comes to a halt over a continuous predetermined period of time, comprises a sensor for sensing the wheel movement of the automobile; a microcontroller based circuit connected on its input side, to the sensor and on its output side, to the ignition system of the automobile, tor receiving, the output signal from the sensor, and switching otf the ignition system whenever the sensor senses no wheel movement over a continuous predetermined interval of time; a throttle switch, provided for the throttle and connected to the input side of the microcontroller, said throttle switch being actuated, on opening the throttle, to cause the microcontroller to switch on the ignition system and activate the starter system to re-start the engine; B neutral switch connected to the gear system and to the starter system, the neutral ©witch disenabling the starter system from re-starting the engine unless, while opening the throttle, the gears are in neutral position to enable the starter system to re-start the engine. This invention will now be described with reference to the accompanying drawings the single Figure in which illustrates, by way of example, and not by way of limitation, the circuitry and layout of one of it« various possible embodiments. A sensor S (pulsar coil) senses the wheel movement of the automobile. The sensor S is connected to the input sid» of the ignition system (exemplified by the capacitance discharge ignition unit C, the high tension coil H and the spark plug P). The rpm output from the capacitance discharge unit C is fed to a microcontroller btsed circuit M. Thus, if the user brings the vehicle to a halt for a continuous predetermined period of, say, 10 seconds. the microcontroller receives the out; signal from the 4 sensor S through the capacitance discharge ignition to the effect that the engine is in idle condition over the said period and switches off the ignition system to save fuel. Such continuous period of 10 seconds may elapse at places, such as, traffic signal points, where fuel is wasted while the engine idles. Of course, since such period is predetermined, it may be fixed at any desired value suited to the objective of conserving fuel during idle intervals. If the user desires to re¬start the vehicle, all that he has to do is to follow the procedure set out below : A throttle switch T is also connected to the input side of the microcontroller M. As soon as the throttle J is opened (after the ignition system has been switched off by the microcontroller) the throttle switch T is actuated, causing the microcontroller to switch on the ignition system and actuate the starter system of the automobile (exemplified by the starter relay R and starter motor V) to re-start the engine, subject to the condition noted below : A neutral switch N is connected to the Btarter system of the automobile. The said switch, when open, disenables the starter system from re-starting the engine, unless while opening the throttle, the vehicle is kept in neutral gear by the user, to close the said switch. In other words, when re-starting the engine, it is necessary to open the throttle -and, at the same time, keep the vehicle in neutral gear. This feature ensures that the vehicle doe© not, inadvertently, lunge forward and cause a traffic accident, as for instance, if the vehicle gears happen to be engaged. Whenever required, the user can de-activate the said device by operating a manual override switch K, in which case the automobile works in the normal manner. The start button F is for normal starting of the vehicle. The terms and expressions herein are of description and not of limitation, there being no intention in the use of such terms and expressions of excluding any equivalents of the features illustrated and described but it is understood that various other embodiments of the device proposed herein are possible without departing from the scope and ambit of this invention. We Claim: 1. An automatic device for switching off the ignition system of an automobile whenever it comes to a halt over a continuous predetermined period of time, comprising a sensor for sensing the wheel movement of the automobile; a microcontroller based circuit connected on its input side, to the sensor and on its output side, to the ignition system of the automobile, for receiving, the output signal from the sensor, and switching off the ignition system whenever the sensor senses no wheel movement over a continuous predetermined interval of time; a throttle switch, provided for the throttle and connected to the input side of the microcontroller, said throttle switch being actuated, on opening the throttle, to cause the microcontroller to switch on the ignition system and activate the starter system to re-start the engine; a neutral switch connected to the gear system and to the starter system, the neutral switch disenabling the starter system from re-starting the engine unless, while opening the throttle, the gears are in neutral position, to enable the starter system to re-start the engine. 2. An automatic device as claimed in Claim 1 wherein a manual override switch is provided for de-activation of the said device. 3. An automatic device for switching otf the ignition system of an automobile whenever it comes to a halt over a continuous predetermined period of time, substantially as herein described with reference to, and as illustrated in, the accompanying drawings.

Full Text

This invention relates to a device for switching off the ignition system of an automobile whenever it cornea to a halt over a continuous predetermined period of
time.
It is common knowledge that an automobile is often
brought to a halt, with the engine running. When such
a situation occurs over a continuous predetermined
period of time, the device proposed herein shuts off
the ignition system and, thus, the engine, to save
fuel .
If the engine is to be re-started, a simple procedure
is adopted in order to do so.
A safety feature of the said device is that re-starting
is made possible only when the vehicle gearing is in
neutral position; not otherwise. This feature ia to
guard against the possibility of the automobile
suddenly lunging forward, during re-starting, as for
instance, when the automobile gears are in engaged
condition.
The said device can be de-activated, whenever
necessary, by a manual override switch which, when

operated, enables the automobile to work normally.
Various other features of the device proposed herein will be apparent from the
following further description thereof
According to this invention the automatic device for switching off the ignition system of an automobile whenever it comes to a halt over a continuous predetermined period of time, comprises a sensor for sensing the wheel movement of the automobile; a microcontroller based circuit connected on its input side, to the sensor and on its output side, to the ignition system of the automobile, tor receiving, the output signal from the sensor, and switching otf the ignition system whenever the sensor senses no wheel movement over a continuous predetermined interval of time; a throttle switch, provided for the throttle and connected to the input side of the microcontroller, said throttle switch being actuated, on opening the throttle, to cause the microcontroller to switch on the ignition system and activate the starter system to re-start

the engine; B neutral switch connected to the gear system and to the starter system, the neutral ©witch disenabling the starter system from re-starting the engine unless, while opening the throttle, the gears are in neutral position to enable the starter system to re-start the engine.
This invention will now be described with reference to the accompanying drawings the single Figure in which illustrates, by way of example, and not by way of limitation, the circuitry and layout of one of it« various possible embodiments.
A sensor S (pulsar coil) senses the wheel movement of
the automobile.
The sensor S is connected to the input sid» of the
ignition system (exemplified by the capacitance
discharge ignition unit C, the high tension coil H and
the spark plug P). The rpm output from the capacitance
discharge unit C is fed to a microcontroller btsed
circuit M.
Thus, if the user brings the vehicle to a halt for a
continuous predetermined period of, say, 10 seconds.

the microcontroller receives the out; signal from the
4
sensor S through the capacitance discharge ignition to the effect that the engine is in idle condition over the said period and switches off the ignition system to save fuel. Such continuous period of 10 seconds may elapse at places, such as, traffic signal points, where fuel is wasted while the engine idles. Of course, since such period is predetermined, it may be fixed at any desired value suited to the objective of conserving fuel during idle intervals. If the user desires to re¬start the vehicle, all that he has to do is to follow the procedure set out below :
A throttle switch T is also connected to the input side of the microcontroller M. As soon as the throttle J is opened (after the ignition system has been switched off by the microcontroller) the throttle switch T is actuated, causing the microcontroller to switch on the ignition system and actuate the starter system of the automobile (exemplified by the starter relay R and starter motor V) to re-start the engine, subject to the condition noted below :

A neutral switch N is connected to the Btarter system of the automobile. The said switch, when open, disenables the starter system from re-starting the engine, unless while opening the throttle, the vehicle is kept in neutral gear by the user, to close the said switch. In other words, when re-starting the engine, it is necessary to open the throttle -and, at the same time, keep the vehicle in neutral gear. This feature ensures that the vehicle doe© not, inadvertently, lunge forward and cause a traffic accident, as for instance, if the vehicle gears happen to be engaged. Whenever required, the user can de-activate the said device by operating a manual override switch K, in which case the automobile works in the normal manner. The start button F is for normal starting of the vehicle.
The terms and expressions herein are of description and not of limitation, there being no intention in the use of such terms and expressions of excluding any equivalents of the features illustrated and described

but it is understood that various other embodiments of the device proposed herein are possible without departing from the scope and ambit of this invention.

We Claim:
1. An automatic device for switching off the ignition system of an automobile whenever it comes to a halt over a continuous predetermined period of time, comprising a sensor for sensing the wheel movement of the automobile; a microcontroller based circuit connected on its input side, to the sensor and on its output side, to the ignition system of the automobile, for receiving, the output signal from the sensor, and switching off the ignition system whenever the sensor senses no wheel movement over a continuous predetermined interval of time; a throttle switch, provided for the throttle and connected to the input side of the microcontroller, said throttle switch being actuated, on opening the throttle, to cause the microcontroller to switch on the ignition system and activate the starter system to re-start the engine; a neutral switch connected to the gear system and to the starter system, the neutral switch disenabling the starter system from re-starting the engine unless, while opening the throttle, the gears are in neutral position, to enable the starter system to re-start the engine.
2. An automatic device as claimed in Claim 1 wherein a manual override switch is provided for de-activation of the said device.
3. An automatic device for switching otf the ignition system of an automobile whenever it comes to a halt over a continuous predetermined period of time, substantially as herein described with reference to, and as illustrated in, the accompanying drawings.

Documents:

0383-che-2003 claims.pdf

0383-che-2003 correspondence-others.pdf

0383-che-2003 correspondence-po.pdf

0383-che-2003 description(complete).pdf

0383-che-2003 drawings.pdf

0383-che-2003 form-1.pdf

0383-che-2003 form-19.pdf

0383-che-2003 form-26.pdf

« Previous Patent

Next Patent »

Patent Number

221862

Indian Patent Application Number

383/CHE/2003

PG Journal Number

37/2008

Publication Date

12-Sep-2008

Grant Date

08-Jul-2008

Date of Filing

06-May-2003

Name of Patentee

TVS MOTOR COMPANY LIMITED

Applicant Address

JAYALAKSHMI ESTATES, NO. 8, HADDOWS ROAD, CHENNAI 600 006,

Inventors:

#	Inventor's Name	Inventor's Address
1	GEORGE RAVINDRAN JAYAPAL	TVS MOTOR COMPANY LIMITED, JAYALAKSHMI ESTATES, NO. 8, HADDOWS ROAD, CHENNAI 600 006,
2	SUDHARSAN SUNDARAM	TVS MOTOR COMPANY, JAYALAKSHMI ESTATES, NO.8, HADDOWS ROAD,
3	ANNAMALAI PALANIAPPAN	TVS MOTOR COMPANY LIMITED, JAYALAKSHMI ESTATES, NO.8, HADDOWS ROAD, CHENNAI 600 006,

PCT International Classification Number

B60Q 1/50

PCT International Application Number

N/A

PCT International Filing date

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1			NA