Control device for vehicle drive device

摘要

A control device of a vehicle drive device includes a direct injection engine, an electric motor, and a clutch selectively coupling the direct injection engine to a power transmission path from the electric motor to drive wheels, the control device slips the clutch and starts the direct injection engine by an ignition start with fuel injected into a cylinder of the direct injection engine and ignited from a start of rotation of the direct injection engine if the direct injection engine is started during a running mode using only the electric motor as a drive source, the control device weakens an engagement force of the clutch if a shaft torque of the direct injection engine goes through a first negative torque extreme value after initiation of a start of the direct injection engine and becomes zero from a negative torque as compared to before becoming the zero.

主权项

1. A control device of a vehicle drive device including a direct injection engine, an electric motor, and a clutch selectively coupling the direct injection engine to a power transmission path from the electric motor to drive wheels,
the control device slipping the clutch and starting the direct injection engine by an ignition start with fuel injected into a cylinder of the direct injection engine and ignited from a start of rotation of the direct injection engine if the direct injection engine is started during a running mode using only the electric motor as a drive source, the control device weakening an engagement force of the clutch if a shaft torque of the direct injection engine goes through a first negative torque extreme value after initiation of a start of the direct injection engine and becomes zero from a negative torque as compared to before becoming the zero, and the control device considering that the shaft torque of the direct injection engine goes through the first negative torque extreme value after the initiation of the start of the direct injection engine and becomes zero from the negative torque if a crank angle rotated from a stop state of the direct engine reaches a predefined crank angle determination value after the initiation of the start of the direct injection engine.