Power plants – Pressure fluid source and motor – Condition responsive control of motive fluid flow
Patent
1989-10-17
1991-11-19
Kwon, John T.
Power plants
Pressure fluid source and motor
Condition responsive control of motive fluid flow
60468, 60488, 60489, F16H 6140
Patent
active
050655787
ABSTRACT:
In a hydrostatic continuously variable transmission in which a clutch valve capable of operating between a clutch-on position for setting a hydraulic closed circuit between a hydraulic pump and a hydraulic motor to a hydraulic transmitting state and a clutch-off position for setting the hydraulic closed circuit to a hydraulic transmission cutting-off state is connected to the hydraulic closed circuit, a pressure bearing chamber for urging the clutch valve to the clutch-off position, and a pressure regulating spring for urging the valve to the clutch-on position are provided in the clutch valve, and a clutch controller for regulating the set load of the pressure regulating spring is connected to the pressure regulating spring. Thus, the degree of the hydraulic transmission between the pump and the motor can be controlled as desired without influence of the viscous change of a working oil. The clutch valve is disposed at one axial end of a transmission shaft.
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Hayashi Tsutomu
Nakajima Yoshihiro
Nakamura Kazuhiko
Saito Mitsuru
Tsunoda Tadashi
Honda Giken Kogyo Kabushiki Kaisha
Kapsalas George
Kwon John T.
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