A sticking condition of a lock-up clutch is judged by an oil temperature of hydraulic oil and a slip ratio of the LC. An intake air amount of an engine is increased while the LC is judged to be in a sticking condition, and the increase of the intake air amount of the engine is terminated when the judgment to be in the sticking condition is canceled. This enables to effectively prevent a rotation speed of the engine from decelerating in a range (timing) where a sticking of the LC occurs, and further prevent the rotation speed of the engine from rapidly accelerating in a range where a sticking of the LC does not occur. Therefore, decelerations of engine rotation speed due to a sticking of the lock-up clutch and rapid accelerations of engine rotation speed after the sticking has been eliminated can both be prevented.
Control device for automatic transmission for vehicle
2016-05-17
Patent
Elektronische Ressource
Englisch
IPC: | F02D CONTROLLING COMBUSTION ENGINES , Steuern oder Regeln von Brennkraftmaschinen / 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 / F16H Getriebe , GEARING |
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