The invention discloses a method and an apparatus for shutdown control of a vehicle engine, wherein the method comprises: carrying out shutdown operations to the engine when successively meeting the decelerating oil-cut condition and a first shutdown condition or when not meeting the decelerating oil-cut condition but the second shutdown condition; the shutdown operations to the engine that are carried out comprises: reducing the torque of the engine and separating a clutch; carrying out a first oil-cut operation to the engine when the clutch is completely separated; recovering oil supply for the engine when the rotation speed of the engine is reduced to within the idle speed point range; and carrying out a second oil-cut operation to the engine after the running time of the engine idle speed reaches the first time threshold value, so as to make the engine freely shutdown. According to the technical solution of the invention, during the process that the engine is shut down at high vehicle speed, the fuel efficiency is improved and the impact of the shutdown of the engine at the high rotation speed to the whole vehicle transmission system is reduced.
Method and apparatus for shutdown control of vehicle engine
2016-01-13
Patent
Elektronische Ressource
Englisch
IPC: | B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion |
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