Control device for vehicle
AssigneeToyota Jidosha Kabushiki Kaisha
InventorTakashi Suzuki
Life of this patent
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Abstract
A control device for a vehicle includes a low-pressure fuel sensor that detects a pressure of fuel stored in a low-pressure delivery pipe, and a control device that controls a feed pump based on a detected value from the low-pressure fuel sensor. The control device causes a relief valve to be opened when variation in power required in an engine continues to remain within a prescribed range for a prescribed period. With this structure, a control device for a vehicle can be provided which allows the relief valve to be opened with reduced variation in air-fuel ratio.
Claims4
A control device for a vehicle equipped with an internal combustion engine, said internal combustion engine including:
- a port injection valve that injects fuel into an intake passage;
- a fuel tank that stores the fuel to be injected from said port injection valve;
- a feed pump that sucks the fuel from said fuel tank and supplies the fuel to said port injection valve;
- and
- a relief valve that is provided along a path from said feed pump to said port injection valve to return the fuel to said fuel tank,
- said control device comprising:
- a fuel pressure sensor that detects a pressure of the fuel supplied to said port injection valve;
- and
- a control unit that controls said feed pump based on a detected value from said fuel pressure sensor,
- said control unit causing said relief valve to be opened when variation in power required in said internal combustion engine continues to remain within a prescribed range for a prescribed period.
Dependencies are inferred from the claim text.