Integrated electronic control of pawl-gear park function of an a

Details Integrated electronic control of pawl-gear park function of an a Integrated electronic control of pawl-gear park function of an a

1995-06-09

1997-12-09

Louis-Jacques, Jacques

Boots, shoes, and leggings

36442601, 364423098, 477906, 477907, 477 92, 477 94, 744115, 192 4R, 192 7, 192 8R, G06G 770, B60K 4120

Patent

active

056966792

ABSTRACT:
An electronically actuated park control system for an automatic transmission for a wheeled vehicle including a transmission range selection control assembly that sends to a powertrain control module a park signal, the module being adapted to deliver an output signal to a park controller circuit for actuating electric actuator motors which activate a mechanical transmission park mechanism, the motors having position feedback monitoring features as the transmission park mechanism is engaged or disengaged, the controller and the park controller circuit having inherent design redundancies as well as independent watchdog circuitry that ensure that transmission park release or park application responds precisely to transmission range selector requests by the driver.

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"Electronic Shift For Automatic Transmissions (ESAT)", David C. Peterson et al, SAE Technical Paper No. 900560, Feb. 26-Mar. 2, 1990.
"Asian Editor Jack Yamaguchi Examines The Vehicles Displayed At The Recent Auto Show", Automotive Engineering, Feb. 1994, pp. 39-40 Stuart Birch et al.
"30 Development Of A Quick And Accurate DC Motor Shifting Device For Automatic Transmissions", JSAE Proceedings 9432796 1994-5 (117-120) Jan. 1994 Furukawa et al.

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