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US 2003/0079718 A1Published application
Engine control apparatus for a vehicle
AssigneeMitsubishi Jidosha Kogyo Kabushiki Kaisha
InventorMasaru Kadoi
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Abstract
An engine control apparatus reduces a driver's feeling of wrongness in a vehicle equipped with an air-conditioning apparatus. A larger one of a first load torque estimated value obtained by estimating a compressor load torque of the air conditioner based on a refrigerant pressure, and a second load torque estimated value obtained by estimating a load torque of the compressor based on an outside air temperature is selected as an air conditioner load to an engine control unit, and an engine output is corrected by using the air conditioner load.
Claims8
An engine control apparatus of a vehicle, comprising:
- an engine;
- an engine control unit controlling the engine based on a driving state of the vehicle;
- an air conditioner compressor driven by the engine;
- an air conditioner condenser that cools a refrigerant pressurized by the air conditioner compressor;
- a refrigerant pressure sensor that detects a pressure of the refrigerant;
- and
- an air conditioner control unit having,
- a first load torque estimation unit that estimates a first load torque value of the compressor based on an output from the refrigerant pressure sensor,
- a second load torque estimation unit that estimates a second load torque value of the compressor based on an outside air temperature, and
- an estimated load torque selection unit that compares the first load torque value estimated by the first load torque estimation unit with the second load torque value estimated by the second load torque estimation unit to transmit a larger one of the first load torque value and the second load torque value to the engine control means.
7 more elements
Dependencies are inferred from the claim text.