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US 6,656,069 B2Granted
Transmission unit
AssigneeJATCO Ltd
InventorTaku Sugano
Life of this patent
Estimating the term…
Abstract
A transmission unit includes a transmission mechanism and a hydraulic control valve unit for controlling the transmission mechanism. The hydraulic control valve unit is disposed at a plane parallel to an axis of the transmission mechanism. A housing encloses the transmission mechanism and has a depressed portion which is overlapped with the hydraulic control unit installed to the housing. An electric oil pump is disposed on the depressed portion of the housing so that a part of the hydraulic control valve unit is overlapped with a part of the electric oil pump.
Claims15
A transmission unit comprising:
- a transmission mechanism;
- a hydraulic control valve unit for controlling said transmission mechanism, said hydraulic control valve unit being disposed on a plane parallel to an axis of said transmission mechanism;
- a housing enclosing said transmission mechanism, said housing having a depressed portion which is overlapped with said hydraulic control valve unit installed to said housing;
- and
- an electric oil pump disposed on the depressed portion outside of said housing so that a part of said hydraulic control valve unit is overlapped with a part of said electric oil pump.
2 more elements
A transmission unit comprising:
- a transmission mechanism;
- a hydraulic control valve unit for controlling said transmission mechanism, said hydraulic control valve unit being disposed on a plane parallel to an axis of said transmission mechanism;
- a housing enclosing said transmission mechanism, said housing having a depressed portion which is overlapped with said hydraulic control valve unit installed to said housing;
- and
- an electric oil pump disposed on the depressed portion of said housing so that a part of said hydraulic control valve unit is overlapped with a part of said electric oil pump,
- wherein an end portion of said electric oil pump is connected to the depressed portion of said housing, the end portion of said electric oil pump has a low-pressure oil inlet port for sucking oil from the hydraulic control valve unit and a high-pressure outlet port for delivering pressurized oil to the hydraulic control valve unit.
3 more elements
A transmission unit comprising:
- a transmission mechanism;
- a hydraulic control valve unit for controlling said transmission mechanism, said hydraulic control valve unit being disposed on a plane parallel to an axis of said transmission mechanism;
- a housing enclosing said transmission mechanism, said housing having a depressed portion which is overlapped with said hydraulic control valve unit installed to said housing;
- and
- an electric oil pump disposed on the depressed portion of said housing so that a part of said hydraulic control valve unit is overlapped with a part of said electric oil pump,
- wherein the end portion of said electric oil pump is fixedly connected to the depressed portion of said housing by means of a knock pin for forbidding a motion between the connecting portions in a direction along a connecting surface between said electric oil pump and said housing and a bolt for forbidding a motion between the connecting portions in the direction perpendicular to the connecting surface.
3 more elements
A transmission unit comprising:
- a transmission mechanism;
- a hydraulic control valve unit for controlling said transmission mechanism, said hydraulic control valve unit being disposed on a plane parallel to an axis of said transmission mechanism;
- a housing enclosing said transmission mechanism, said housing having a depressed portion which is overlapped with said hydraulic control valve unit installed to said housing;
- and
- an electric oil pump disposed on the depressed portion of said housing so that a part of said hydraulic control valve unit is overlapped with a part of said electric oil pump,
- wherein a sleeve is inserted to the high-pressure outlet port of said electric oil pump and to an oil inlet portion of said housing, O-rings being sealingly provided between the sleeve and the high-pressure outlet port and between the sleeve and the oil inlet port of said housing, respectively.
3 more elements
A continuously variable transmission (CVT) unit for a hybrid vehicle, said CVT unit comprising:
- a CVT mechanism comprising
- an input shaft,
- an electromagnetic clutch selectively connecting and disconnecting said input shaft and an engine of the hybrid vehicle,
- a driver pulley installed to said input shaft,
- a follower pulley installed to a shaft interconnected to wheels of the vehicle,
- a belt connecting said driver pulley and said follower pulley to transmit driving power from said driver pulley to said follower pulley;
- an electric motor installed around the input shaft and between the electromagnetic clutch and the driver pulley;
- a hydraulic control valve unit disposed at a plane parallel to said input shaft, said hydraulic control valve unit controlling hydraulic pressure for controlling and lubricating said CVT mechanism;
- a housing enclosing said CVT mechanism, said housing having a depressed portion which is overlapped with said hydraulic control unit installed to said housing;
- and
- an electric oil pump disposed on the depressed portion of said housing so that a part of the hydraulic control valve unit is overlapped with a part of said electric oil pump through the depressed portion.
8 more elements
Dependencies are inferred from the claim text.