Patent ID: 6770005
Filing Date: 2004-08-03
Classification: B60K,B60L,B60W,F16H,Y02T,Y10S,Y10T

Abstract:
A power transmission system for vehicles including a main drive wheel and an auxiliary drive wheel, the system comprising:a main Dower transmission system configured to transmit main drive power from a fuel engine to the main drive wheel via a first train of torque transmitters; an auxiliary power transmission system configured to transmit auxiliary drive power from an electric motor to the auxiliary drive wheel via an interruptive second train of torque transmitters including; a first clutch element; and a second clutch element actuable relative to the first clutch element for engagement therewith; a set of cam elements actuable for cooperation therebetween to provide the second clutch element with an increased tendency to engage with the first clutch element; and an actuator operative to simultaneously actuate the second clutch element and the set of cam elements; wherein the second train of torque transmitters includes a reduction and a differential; wherein the reduction comprises a planetary gear and has an oil pump for lubricating the planetary gear; and wherein the oil pump is provided on a lid side of a case of the reduction.