Pumps – Condition responsive control of pump drive motor – With plural separate drive motors for single pump unit
Patent
1993-12-10
1995-12-12
Bertsch, Richard A.
Pumps
Condition responsive control of pump drive motor
With plural separate drive motors for single pump unit
417 15, 417 17, 417 441, 417223, 417316, 192 4892, F04B 4900
Patent
active
054744288
ABSTRACT:
An oil pump driving device drives an oil pump combined with a transmission coupled to an engine for supplying working oil to lubricate the transmission and enable the transmission to make gear shifts. The transmission includes a first power transmitting mechanism for connecting the output shaft of an electric motor to the drive shaft of the oil pump, and a second power transmitting path for connecting the output shaft of the engine to the drive shaft of the oil pump. A controller for selecting one of the first and second power transmitting mechanisms at a time selects the first power transmitting mechanism to drive the oil pump with the electric motor when the rotational speed of the output shaft of the engine is lower than a predetermined speed, and selects the second power transmitting mechanism to drive the oil pump with the engine when the rotational speed of the output shaft of the engine exceeds the predetermined speed.
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Fujimoto Shuichi
Kimura Kiyoshi
Kojima Makoto
Ooyama Kazuo
Bertsch Richard A.
Honda Giken Kogyo Kabushiki Kaisha
Thai Xuan M.
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