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Apparatus and method for controlling a manual-automatic transmission after a power reset

  • US 5,591,102 A
  • Filed: 06/07/1995
  • Issued: 01/07/1997
  • Est. Priority Date: 06/07/1995
  • Status: Expired due to Term
First Claim
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1. A method of electronically controlling a manual/automatic transmission after an electrical power reset in a vehicle having an engine engageable to the transmission and means for sensing vehicle speed, the transmission including both manually and electronically selectable gears and an electronically selectable neutral position, the method comprising the steps of:

  • (1) maintaining engagement of the gear commanded prior to the power reset for a first predetermined time period;

    (2) performing steps (3)-(7) after said first predetermined time period elapses;

    (3) sensing vehicle speed;

    (4) commanding neutral position if said vehicle speed is less than a first predetermined vehicle speed;

    (5) commanding the highest of the electronically selectable gears if said vehicle speed is above a second predetermined vehicle speed and the engine is not engaged to either of the two highest electronically selectable gears;

    (6) sensing vehicle speed; and

    (7) performing steps (5)-(6) until a second predetermined time period elapses.

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