CONTROL DEVICE FOR HYBRID VEHICLE
First Claim
Patent Images
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 of the detection unit at stop of the fuel supply; 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.
2 Assignments
0 Petitions
Accused Products
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.
-
Citations
6 Claims
-
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 of the detection unit at stop of the fuel supply; 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. - View Dependent Claims (2, 3, 4, 5, 6)
-
Specification