Hydraulic and mechanical transmission apparatus

Details Hydraulic and mechanical transmission apparatus Hydraulic and mechanical transmission apparatus

1998-01-16

2000-03-21

Marmor, Charles A.

Planetary gear transmission systems or components

Fluid drive or control of planetary gearing

Fluid pump and motor in one of plural paths to or from...

475 75, 475 80, 475 82, 60488, F16H 4704

Patent

active

060396660

ABSTRACT:
A power of an input shaft driven by an engine is divided by a power dividing device and transmitted to first and second output shafts and a hydraulic pump of a hydrostatic continuously variable transmission is driven by the first output shaft, whereas a hydraulic motor is driven by the second output shaft through a mechanical transmission device and also by the hydraulic pump. A main oil pump is provided at the input shaft which rotates at the same speed as an engine speed, and a subsidiary oil pump is provided at the first output shaft which decreases rotational speed thereof to zero with an increase in the engine rotational speed. In a low rotational speed region of the engine, oil is supplied by both the main oil pump and the subsidiary oil pump, whereas in a high rotational speed region of the engine, oil is supplied by only the main oil pump. With this construction, it is possible to prevent a waste of energy required to drive the oil pump in the high rotational speed region of the engine while ensuring the quantity of oil supply from the oil pump in the low rotational speed region of the engine.

REFERENCES:
patent: 3184913 (1965-05-01), Anderson et al.
patent: 3709060 (1973-01-01), Orshansky
patent: 3709061 (1973-01-01), Orshansky
patent: 3733924 (1973-05-01), Zentz et al.
patent: 4024775 (1977-05-01), Anderson et al.
patent: 4446756 (1984-05-01), Hagin et al.
patent: 4491034 (1985-01-01), Fredriksen
patent: 4843907 (1989-07-01), Hagin et al.
patent: 4922717 (1990-05-01), Furumoto et al.
patent: 4972675 (1990-11-01), Kawahara et al.
patent: 4983149 (1991-01-01), Kita
patent: 5542307 (1996-08-01), Hasegawa et al.
patent: 5544547 (1996-08-01), Ishimaru
patent: 5584772 (1996-12-01), Hayd
patent: 5643122 (1997-07-01), Fredriksen
patent: 5766107 (1998-06-01), Englisch
patent: 5785623 (1998-07-01), Lino et al.
patent: 5803856 (1998-09-01), Lino et al.

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