METHOD AND SYSTEM FOR STARTING ENGINE DURING FAILURE OF STARTER MOTOR OF HYBRID ELECTRIC VEHICLE

摘要

A method of starting an engine when a starter motor of a hybrid electric vehicle has a failure includes identifying a request for starting the engine in a state where the starter motor has the failure. When the request for starting the engine is made in the state where the starter motor has the failure, a torque or a load of an engine clutch and a pressure of the engine clutch are determined. A torque of a driving motor is set to a smaller torque between a driving motor demanded torque and a torque obtained by subtracting the torque of the engine clutch from a maximum torque of the driving motor. The engine starts with the set torque of the driving motor while controlling the engine clutch.

主权项

1. A method of starting an engine when a starter motor of a hybrid electric vehicle has a failure, the method comprising:
identifying a request for starting the engine in a state where the starter motor has the failure; determining a torque or a load of an engine clutch and a pressure of the engine clutch when the request for starting the engine is made in the state where the starter motor has the failure; setting a torque of a driving motor to a smaller torque between a driving motor demanding torque and a torque obtained by subtracting the torque of the engine clutch from a maximum torque of the driving motor; and starting the engine with the set torque of the driving motor while controlling the engine clutch.