Apparatus for controlling starting clutch in vehicle having function of stopping engine idling

Abstract

At the time of vehicle start-up from the state of engine stopping, a hydraulic oil pressure in a starting clutch sometimes overshoots beyond a creeping pressure as a result of a rise in the hydraulic oil pressure in the hydraulic circuit, resulting in shocks. A hydraulic oil pressure command value to a linear solenoid valve which controls the starting clutch pressure is made smaller than the creeping pressure until the point of time at which the rise in the hydraulic oil pressure in the hydraulic circuit (=the point of time at which a condition of F2=1 is satisfied). Once a discrimination of a rise in the hydraulic oil pressure has been made, the command value is made higher than the creeping pressure for a predetermined period of time (i.e., for the period of YTM3−YTM3B1), and is thereafter made to the creeping pressure.

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