Fluid pressure control device for lock-up mechanism

Details Fluid pressure control device for lock-up mechanism Fluid pressure control device for lock-up mechanism

2006-03-14

2006-03-14

Bonck, Rodney H. (Department: 3681)

Interrelated power delivery controls, including engine control

Transmission control

Including fluid drive

C192S003300, C701S067000

Reexamination Certificate

active

07011603

ABSTRACT:
A fluid pressure control device including a torque converter that is placed between a output shaft of an engine and an input shaft of a transmission, a mechanical oil pump that is driven by the output shaft, a clutch that directly engages the output shaft and the input shaft by employing an engagement pressure based on a fluid pressure that is generated by the mechanical oil pump, an electric oil pump that can supply a fluid pressure to the clutch, and a control unit for controlling the electric oil pump, wherein when the engagement pressure based on the fluid pressure that is generated by the mechanical oil pump is an amount below a necessary engagement pressure that is necessary to engage the clutch, the control unit drives the electric oil pump so as to supply a fluid pressure by at least the amount to the clutch.

REFERENCES:
patent: 5802490 (1998-09-01), Droste
patent: 5888166 (1999-03-01), Minowa et al.
patent: 6056094 (2000-05-01), Sakai
patent: 6085136 (2000-07-01), Katakura et al.
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patent: 6508740 (2003-01-01), Kimura et al.
patent: 6647326 (2003-11-01), Nakamori et al.
patent: 2002/0107103 (2002-08-01), Nakamori et al.
patent: 2003/0153428 (2003-08-01), Kitano et al.
patent: 2003/0171187 (2003-09-01), Aoki et al.

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