Control device for hybrid vehicle
AssigneeMitsubishi Jidosha Kogyo Kabushiki Kaisha
InventorsHideo Matsunaga, Hisakazu Ikedaya, Hitoshi Kamura, Toshiyuki Miyata
Life of this patent
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Abstract
In a hybrid vehicle that selects a series mode in which an engine drives a motor generator to generate electric power and a driving motor drives drive wheels, fuel supply to the engine is stopped and motoring in which the motor generator forcedly drives the engine can be performed, failure determination of a front O2 sensor and a rear O2 sensor provided in an exhaust passage of the engine can be performed based on a change in a detection value of the sensors when the fuel supply is stopped, and a throttle valve of the engine is forcedly opened in the motoring.
Claims6
A control device for a hybrid vehicle, comprising:
- an engine included in the vehicle;
- a detection unit that detects an exhaust constituent of the engine;
- a motor generator that is driven by the engine to generate electric power, while driving the engine using electric power supplied from a driving battery included in the vehicle;
- a driving motor that drives drive wheels using the electric power supplied from the driving battery;
- a motoring performing unit that stops fuel supply to the engine and forcedly drives the engine using the motor generator to perform motoring;
- a failure determination unit that performs failure determination of the detection unit based on a detection value that is detected by the detection unit while the motoring is performed with the fuel supply stopped;
- and
- a throttle valve control unit that forcedly opens a throttle valve that controls an intake flow rate of the engine during performance of the motoring, wherein
- the motoring performing unit continues the motoring until the failure determination is completed.
Dependencies are inferred from the claim text.