ENGINE STARTUP SYSTEM

摘要

In the course of starting up an engine during electric travel node, this engine startup system performs a semi-engagement operation (S2) of engaging the clutch while making same slip in order to crank the engine, and then performs a disengagement operation (S4, S5) of disengaging the clutch after starting to crank the engine. The timing for starting the disengagement operation of the clutch is varied depending on the driving force required.

主权项

1. An engine startup system that is applied to a hybrid vehicle in which an engine is linked via a clutch to a power transmission path that outputs drive force for propulsion and in which also an electric motor is linked to the power transmission path comprising an electronic control unit configured to
start up the engine by employing the torque of the electric motor when a startup request for the engine is issued during a propulsion mode in which the engine is stopped, engage the clutch so that torque after starting of the engine is transmitted to the power transmission path, perform semi-engagement operation of engaging the clutch while slipping it in order to crank the engine and disengagement operation of disengaging the clutch after cranking of the engine has started, and change the start timing of the disengagement operation according to required drive force.