Stop-start device for controlling the operation of an internal combustion engine of a vehicle provided with an automatic transmission
First Claim
1. A stop-start device for controlling the operation of an internal combustion engine of a motor vehicle provided with a brake pedal, an accelerator pedal, an electric starter motor and, an automatic transmission, comprising:
- sensor means operable to provide electrical signals indicative of the speed of the vehicle, the speed of rotation of the engine, and the position of the accelerator pedal,actuator means arranged, respectively when activated and deactivated, to cause the engine to be turned off and to allow starting thereof, andan electronic monitoring and control unit connected to the said sensor means, to the actuator means and to the electric starter motor of the engine;
the said unit being arrangedto activate the said actuator means whenever the signals provided by the said sensor means indicate that for a period of time of predetermined duration the speed of rotation of the engine is less than a first predetermined value, the speed of the vehicle is less than a predetermined threshold, and the accelerator pedal is released, andto deactivate the said actuator means and automatically activate the electric starter motor when the signals provided by the said sensor means indicate that the speed of rotation of the engine is lower than a second predetermined value, less than the said first value, and the accelerator pedal is depressed, wherein the said sensor means are arranged to provide further electrical signals indicative of the position of the brake pedal, and in that the said electronic monitoring and control unit is arranged to activate the said actuator means whenever the signals provided by the said sensor means indicate that for a period of time of predetermined duration, the speed of rotation of the engine is less than the said first predetermined value, the speed of the vehicle is less than the said threshold value and the brake pedal and the accelerator pedal are both released.
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Accused Products
Abstract
The device comprises sensors for providing electrical signals indicative of the speed of the vehicle, the speed of rotation of the engine, the position of the accelerator pedal and the position of the brake pedal. An electronic monitoring and control unit connected to these sensors, activates actuator devices arranged to turn off the engine when, for a period of time of predetermined duration, the speed of rotation of the engine is less than a first predetermined value, the speed of the vehicle is less than a threshold value, and the accelerator pedal is released. This monitoring and control unit deactivates the actuator means and activates the electric starter motor when the signals provided by the sensors indicate that the speed of rotation of the engine is lower than a second predetermined value, less than the first, and the accelelator pedal (or the brake pedal) is depressed.
53 Citations
8 Claims
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1. A stop-start device for controlling the operation of an internal combustion engine of a motor vehicle provided with a brake pedal, an accelerator pedal, an electric starter motor and, an automatic transmission, comprising:
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sensor means operable to provide electrical signals indicative of the speed of the vehicle, the speed of rotation of the engine, and the position of the accelerator pedal, actuator means arranged, respectively when activated and deactivated, to cause the engine to be turned off and to allow starting thereof, and an electronic monitoring and control unit connected to the said sensor means, to the actuator means and to the electric starter motor of the engine;
the said unit being arrangedto activate the said actuator means whenever the signals provided by the said sensor means indicate that for a period of time of predetermined duration the speed of rotation of the engine is less than a first predetermined value, the speed of the vehicle is less than a predetermined threshold, and the accelerator pedal is released, and to deactivate the said actuator means and automatically activate the electric starter motor when the signals provided by the said sensor means indicate that the speed of rotation of the engine is lower than a second predetermined value, less than the said first value, and the accelerator pedal is depressed, wherein the said sensor means are arranged to provide further electrical signals indicative of the position of the brake pedal, and in that the said electronic monitoring and control unit is arranged to activate the said actuator means whenever the signals provided by the said sensor means indicate that for a period of time of predetermined duration, the speed of rotation of the engine is less than the said first predetermined value, the speed of the vehicle is less than the said threshold value and the brake pedal and the accelerator pedal are both released. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification