ENGINE START CONTROL DEVICE

摘要

A start control device for an engine includes an engine control unit, a motor control unit, and a control unit which controls the engine control unit and the motor control unit, wherein the control unit, when transferring an engine restart control mode from a motoring control state to a fuel combustion control state, executes the transfer via a motor/engine combined control state, and sets the timing of transferring from the motoring control state to the motor/engine combined control state, to a timing at which a crank angle of a cylinder where fuel is combusted first after starting fuel injection reaches a crank angle at which it is estimated that torque is generated by the first combustion of fuel in the cylinder.

主权项

1. An engine start control device mounted in a vehicle,
the vehicle having an engine, a motor which causes the engine to rotate, and tires which rotate due to motive power from at least one of the engine and the motor, the engine start control device comprising: an engine control unit which controls the output of the engine by adjusting at least one of an intake air amount and a fuel injection amount of the engine; a motor control unit which controls the output of the motor; and a control unit which controls the engine control unit and the motor control unit, wherein the control unit has, as restart control modes of the engine: a motoring control state which causes the engine to rotate only by drive power of the motor; a fuel combustion control state which causes the engine to rotate only by drive power from combustion of fuel in the engine; and a motor/engine combined control state which causes the engine to rotate by both the drive power of the motor and the drive power from combustion of fuel in the engine, and the control unit: when transferring the restart control mode of the engine from the motoring control state to the fuel combustion control state, executes the transfer via the motor/engine combined control state; and sets a timing of transferring from the motoring control state to the motor/engine combined control state, to a timing at which a crank angle of a cylinder where fuel is combusted first after starting injection of the fuel reaches a crank angle at which it is estimated that torque is generated by the first combustion of fuel in the cylinder.