Interrelated power delivery controls – including engine control – Clutch control – Condition responsive control
Reexamination Certificate
2005-04-22
2010-06-15
Pang, Roger (Department: 3655)
Interrelated power delivery controls, including engine control
Clutch control
Condition responsive control
C477S159000, C477S906000
Reexamination Certificate
active
07736270
ABSTRACT:
A control valve arrangement for controlling a start coupling of an automatic gearbox comprising a clutch control valve (3, 37, 41, 48, 49) for controlling at least one clutch actuating device (4, 40) which, during normal operation of the gearbox, converts a supply pressure input (P_V1, P_V2) into a clutch actuation pressure (P_K, P_K1, P_K2) according to a pre-control pressure or an electric pre-control signal in order to control the clutch actuation device. An activating pressure (P_A) can be supplied to the clutch control valve or directly to the clutch activation device in the event of a discontinuation of the pre-control pressure or pre-control signal according to the engine and gearbox output speed, whereupon the clutch actuation device is maintained in a closed position as long as the above mentioned speed remains above a predetermined limit.
REFERENCES:
patent: 4296652 (1981-10-01), Oberpichler et al.
patent: 4345489 (1982-08-01), Muller et al.
patent: 5263387 (1993-11-01), Reniers
patent: 5314385 (1994-05-01), Haley et al.
patent: 5787710 (1998-08-01), Baeuerle
patent: 6102176 (2000-08-01), Fujikawa
patent: 6155396 (2000-12-01), Tsubata et al.
patent: 6467262 (2002-10-01), Baeuerle
patent: 6702702 (2004-03-01), Godecke
patent: 6865965 (2005-03-01), Uchino
patent: 7044889 (2006-05-01), Habeck
patent: 2005/0043141 (2005-02-01), Neuner
patent: 2005/0202917 (2005-09-01), Shimizu et al.
patent: 2008/0234099 (2008-09-01), Gierer et al.
patent: 2008/0234100 (2008-09-01), Gierer et al.
patent: 2009/0036269 (2009-02-01), Kim
patent: 2010/0056334 (2010-03-01), Toi et al.
patent: 1009149 (1996-12-01), None
patent: 198 20 389 (1998-11-01), None
patent: 199 43 939 (2001-03-01), None
patent: 101 18 756 (2002-05-01), None
patent: 101 59 640 (2003-06-01), None
patent: 102 30 774 (2004-01-01), None
patent: 102 38 104 (2004-03-01), None
patent: 0 487 128 (1992-05-01), None
patent: 0 942 202 (1999-09-01), None
patent: 0 982 512 (2000-03-01), None
patent: 1 251 300 (2002-10-01), None
patent: 1 517 059 (2005-03-01), None
patent: 1 519 080 (2005-03-01), None
patent: 1 522 754 (2005-04-01), None
Gierer Georg
Schmidt Thilo
Davis & Bujold P.L.L.C.
Pang Roger
ZF Friedrichshafen AG
LandOfFree
Control valve arrangement for controlling a start clutch of... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Control valve arrangement for controlling a start clutch of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control valve arrangement for controlling a start clutch of... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4223401