Patent ID: 9097330
Filing Date: 2015-08-04
Classification: B60K,F16H,Y02T

Abstract:
1. A vehicle power transmission device having a hydraulic power transmission device and a power transmission mechanism in a power transmission path between an engine and drive wheels, the hydraulic power transmission device including an input-side rotating member disposed with a plurality of pump blades and an output-side rotating member disposed with a plurality of turbine blades receiving a fluid flow from the pump blades, the power transmission mechanism transmitting power input to an input shaft from the hydraulic power transmission device to a subsequent stage, the input-side rotating member being provided with the pump blades internally disposed on a side of the power transmission mechanism, and the input-side rotating member housing the output-side rotating member disposed with the turbine blades opposite to the pump blades and fluid flowing from the pump blades to the turbine blades, the vehicle power transmission device having an engine intermittent clutch and a lockup clutch disposed closer to the engine relative to the turbine blades in the input-side rotating member, the engine intermittent clutch selectively coupling a crankshaft of the engine to the input-side rotating member, the lockup clutch selectively coupling the input-side rotating member to the output-side rotating member, one of the engine intermittent clutch and the lockup clutch being a single plate clutch, the vehicle power transmission device further comprising an electric motor disposed on a second axial center parallel to an axial center of the hydraulic power transmission device and operatively coupled to the input-side rotating member, the hydraulic power transmission device including a first damper inserted in a power transmission path between the crankshaft of the engine and the electric motor, and a second damper inserted in a power transmission path between the first damper and the output-side rotating member within a power transmission path between the electric motor and the input shaft of the power transmission mechanism to partially or entirely overlap with the first damper when viewed in the direction orthogonal to the axial center, the engine intermittent clutch being coupled to the crankshaft through the first damper, and a disk-shaped piston member being coupled to the output-side rotating member through the second damper.