Control apparatus for vehicle and method thereof
AssigneeHitachi Unisia Automotive, Ltd.
InventorsHajime Hosoya, Satoru Watanabe
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Abstract
In a diagnosis control for periodically detecting a pressure in a fuel tank during an operation of an engine is stopped, to diagnose whether or not the leakage occurs in a fuel vapor purge system, the power supply to a sensor detecting the pressure in the fuel tank is intermittently performed at each detection period.
Claims20
A control apparatus for a vehicle in which an engine is installed, comprising:
- a detector outputting a signal corresponding to a state of said vehicle;
- and
- a control unit that receives an output signal from said detector to detect said vehicle state and also controls the power supply to said detector,
- wherein said control unit controls the power supply to said detector according to a detection request of said vehicle state, when receiving the output signal from said detector during an operation of said engine is stopped.
A control apparatus for a vehicle in which an engine is installed, comprising:
- detecting means for outputting a signal corresponding to a state of said vehicle:
- power supply control means for controlling the power supply to said detecting means according to a detection request of said vehicle state during an operation of said engine is stopped;
- and
- calculating means for receiving to calculate an output signal from said detecting means.
A control method for a vehicle equipped with an engine and also equipped with a detector outputting a signal corresponding to a state of said vehicle, comprising the steps of:
- detecting a condition where an operation of said engine is stopped;
- controlling the power supply to said detector according to a detection request of said vehicle state during the operation of said engine is stopped;
- and
- detecting said vehicle state based on an output signal from said detector.
Dependencies are inferred from the claim text.