Engine run time change for battery charging issues with automatic restart system
First Claim
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1. A method for reducing starts during automated start up and stop control responsive to battery voltage detection, the method comprising:
- extending the run time after start-up command is generated by;
sensing the time interval between a stop engine command and a subsequent start engine command;
determining when said interval is less than a start up time threshold selected as representative of chargeability and;
generating an extended run command enabling said stop command to be delayed to an extended time beyond a preselected restart battery time.
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Abstract
An engine control practices a method for engine control in a vehicle control system having an automated start and stop system that keeps a battery charged and an engine temperature in a preselected range, the run time for the engine being extended beyond a preset run time when said control senses that a time interval between start up and the last shut off is shorter than a preset start up time limit.
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Citations
9 Claims
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1. A method for reducing starts during automated start up and stop control responsive to battery voltage detection, the method comprising:
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extending the run time after start-up command is generated by; sensing the time interval between a stop engine command and a subsequent start engine command; determining when said interval is less than a start up time threshold selected as representative of chargeability and; generating an extended run command enabling said stop command to be delayed to an extended time beyond a preselected restart battery time. - View Dependent Claims (2, 3)
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4. A control to reduce start ups based on low battery voltage in an automated start and stop engine control when a low charging problem or aged battery problem initiates said start up, the control comprising:
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a controller setting an extended run time for the engine in said control including; a sensor for detecting the time interval between a stop engine command and a subsequent start engine command; a determiner for assessing when said interval is less than a start up time threshold selected as representative of chargeability; and a generator for setting an extended run time command enabling said stop command to be delayed beyond a preselected restart battery time. - View Dependent Claims (5, 6)
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7. A computer readable storage medium having data stored therein representing instructions executable by a computer to control a compression ignition interval combustion engine installed in a vehicle to perform automated start and stop operation, the computer readable storage medium comprising:
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instructions for extending the run time of an engine is said automated run time following a start up command by; instructions for sensing a time interval between a stop engine command and a subsequent start engine command; instructions for determining when said interval is less than a start up time threshold selected as representative of chargability; and instructions for generating an extended run command enabling said stop command to be delayed to an extended time beyond a preselected restart battery time. - View Dependent Claims (8, 9)
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Specification