EP 0448549 A4 19931006 - ELECTRICAL CONTROL SYSTEM FOR CONTROL OF AN AUTOMATIC TRANSMISSION APPARATUS
Title (en)
ELECTRICAL CONTROL SYSTEM FOR CONTROL OF AN AUTOMATIC TRANSMISSION APPARATUS
Publication
Application
Priority
US 8804449 W 19881213
Abstract (en)
[origin: WO9006862A1] The present invention is an electrical control apparatus for control of an automatic transmission (20) in a motor vehicle. The automatic transmission has a motor (42) for controlling the transmission state. The electrical control apparatus includes an operator input device (30), preferably a set of push buttons, for generating a desired transmission state signal, a transmission state sensing device (73) for generating a present transmission state signal, and a logic control unit (220) for control of the transmission motor. If the desired transmission state differs from the present transmission state, then the logic control unit (220) generates either a clockwise motor drive signal or counter-clockwise motor drive signal as needed to reach the desired transmission state. The logic control unit (220) preferably also includes logic for inhibiting the generation of the clockwise and counter-clockwise motor control signals upon detection of an unsafe circumstance which would make a particular shift hazardous or harmful to the vehicle.
IPC 1-7
IPC 8 full level
F16H 61/00 (2006.01); F16F 15/34 (2006.01); F16H 59/08 (2006.01); F16H 59/12 (2006.01); F16H 61/12 (2010.01); F16H 61/32 (2006.01); F16H 63/42 (2006.01); F16H 61/18 (2006.01)
CPC (source: EP)
F16F 15/34 (2013.01); F16H 59/12 (2013.01); F16H 61/32 (2013.01); F16H 61/18 (2013.01); F16H 2061/326 (2013.01)
Citation (search report)
- [X] EP 0187117 A2 19860709 - UNITED TECHNOLOGIES ELECTRO SY [US]
- [Y] EP 0108572 A1 19840516 - ISUZU MOTORS LTD [JP]
- [Y] EP 0096352 A2 19831221 - NIPPON DENSO CO [JP]
- [A] US 4558612 A 19851217 - SHIMIZU TAKEO [JP], et al
- See references of WO 9006862A1
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
WO 9006862 A1 19900628; EP 0448549 A1 19911002; EP 0448549 A4 19931006; JP 2991730 B2 19991220; JP H04505044 A 19920903
DOCDB simple family (application)
US 8804449 W 19881213; EP 89902708 A 19881213; JP 50262889 A 19881213