Control device for hybrid vehicle
First Claim
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1. 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, whereinthe motoring performing unit continues the motoring until the failure determination is completed.
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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.
12 Citations
6 Claims
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1. A control device for a hybrid vehicle, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification