F - Mech Eng,Light,Heat,Weapons – 16 – H
Patent
F - Mech Eng,Light,Heat,Weapons
16
H
F16H 59/74 (2006.01) F16H 61/02 (2006.01) F16H 61/16 (2006.01)
Patent
CA 2071404
A shift interlock mechanism for an automatic transmission includes electro-hydraulic elements internal to the transmission which are operable to inhibit the supply of fluid pressure for engaging the forward and reverse speed ranges of the transmission. The electro-hydraulic elements are activated in response to various operating parameters of the vehicle, including range selector position, engine throttle position, depression of the service brake pedal, vehicle speed, etc. The mechanism does not interfere with movement of the transmission range selector, and includes a mechanical link for overriding the interlock function when the range selector is moved to a LO forward range, thereby providing an override in the event of a failure of the electro-hydraulic elements.
Ortmann Walter Joseph
Vukovich William Joseph
General Motors Corporation
Gowling Lafleur Henderson Llp
LandOfFree
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