Patent ID: 7670244
Filing Date: 2010-03-02
Classification: B60K,F16D,F16H,Y10T

Abstract:
1. A power transmission system including an input member and an output member that transmits power; an oil pump that discharges oil by a relative rotation between a first rotary member and a second rotary member, and which is driven by the power transmitted between the input member and the output member; a transmission member that connects the first rotary member and the second rotary member in a power transmittable manner; a control valve that controls a power transmission state between the first rotary member and the second rotary member, by controlling an oil discharge condition of the oil pump; and a controller that controls the discharge condition of the oil pump by controlling the control valve on the basis of an operating condition of a vehicle, wherein the input member and the first rotary member are connected with each other in a power transmittable manner, and the output member and the second rotary member are connected with each other in a power transmittable manner; wherein the transmission member is configured to increase torque transmitted between the first rotary member and the second rotary member in accordance with a reduction of the discharge amount of the oil pump, or a rise in a discharge pressure of the oil pump, and wherein the controller includes a device that controls the control valve so that the discharge amount of the oil pump is reduced, or so that the discharge pressure of the oil pump is raised, according to an increase in a target value of the torque transmitted between the input member and the output member.