Electronic control apparatus for vehicle and control method for vehicle
First Claim
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1. An electronic control apparatus using a battery as a power source, for a vehicle in which an engine is installed, comprising:
- a plurality of processing circuits;
power supply shut-off circuits shutting off the power supply to certain processing circuits of said plurality of processing circuits; and
a control circuit controlling said power supply shut-off circuits based on an ON/OFF signal for an ignition key, to shut off the power supply to said certain processing circuits after an operation of said engine is stopped by means of turning off said ignition key.
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Abstract
In the case where it is diagnosed whether or not the leakage occurs in a fuel vapor purge system from a standby time has elapsed after an engine operation was stopped, the power supply to processing circuits unnecessary for the leakage diagnosis is shut off, thereby suppressing the power consumption during the engine operation stop.
13 Citations
17 Claims
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1. An electronic control apparatus using a battery as a power source, for a vehicle in which an engine is installed, comprising:
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a plurality of processing circuits; power supply shut-off circuits shutting off the power supply to certain processing circuits of said plurality of processing circuits; and a control circuit controlling said power supply shut-off circuits based on an ON/OFF signal for an ignition key, to shut off the power supply to said certain processing circuits after an operation of said engine is stopped by means of turning off said ignition key. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An electronic control apparatus using a battery as a power source, for a vehicle in which an engine is installed, comprising:
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a plurality of processing means; power shut-off means for shutting off the power supply to certain processing means of said plurality of processing means; and control means for controlling said power shut-off means based on an ON/OFF signal for an ignition key, to shut off the power supply to said certain processing means after an operation of said engine is stopped by means of turning off said ignition key.
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10. A control method of using a plurality of processing circuits which uses a battery as a power source, for a vehicle in which an engine is installed, comprising the steps of:
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receiving an ON/OFF signal for an ignition key; and judging whether or not an operation of said engine is stopped, based on the ON/OFF signal for said ignition keys, when it is judged that the operation of said engine is stopped, shutting off the power supply to certain processing circuits of said plurality of processing circuits; and using the processor circuit, other than said certain processing circuits, of said plurality of processing circuits, to execute a process to be performed after the operation of said engine is stopped. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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Specification