Automatic engine stop and start system
First Claim
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1. An automatic stop and start system for an engine of a motor vehicle for stopping the engine under a predetermined operating condition, comprising:
- a first sensing means for sensing when the motor vehicle is making a turn across an opposite lane and for generating a corresponding output signal;
a second sensing means for sensing an additional electrical load and for generating a corresponding output signal;
a thermistor for sensing the temperature of engine coolant, said thermistor generating an "ON" signal when the sensed temperature is lower than a first predetermined temperature or higher than a second predetermined temperature which is higher than the first predetermined temperature; and
an electronic control unit which stops the engine under a predetermined operating condition, but does not stop the engine even under a predetermined operating condition when said first or second sensing means generates said output signals when said thermistor generates said "ON" signal.
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Abstract
Determination as to whether the condition of automatically stopping an engine is formed or not is made based on outputs from pluralities of sensors and switches for detecting the operating conditions of various portions of a vehicle. Even if the result of determination satisfies the conditions of automatic stop, automatic stop is not effected when the temperature of the engine cooling water exceeds predetermined temperature limits.
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Citations
4 Claims
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1. An automatic stop and start system for an engine of a motor vehicle for stopping the engine under a predetermined operating condition, comprising:
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a first sensing means for sensing when the motor vehicle is making a turn across an opposite lane and for generating a corresponding output signal; a second sensing means for sensing an additional electrical load and for generating a corresponding output signal; a thermistor for sensing the temperature of engine coolant, said thermistor generating an "ON" signal when the sensed temperature is lower than a first predetermined temperature or higher than a second predetermined temperature which is higher than the first predetermined temperature; and an electronic control unit which stops the engine under a predetermined operating condition, but does not stop the engine even under a predetermined operating condition when said first or second sensing means generates said output signals when said thermistor generates said "ON" signal. - View Dependent Claims (2, 3, 4)
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Specification