×

Electrical control system for control of an automatic transmission apparatus

  • US 4,922,769 A
  • Filed: 02/16/1989
  • Issued: 05/08/1990
  • Est. Priority Date: 07/16/1987
  • Status: Expired due to Term
First Claim
Patent Images

1. An electrical control apparatus for control of a transmission apparatus in a motor vehicle having a plurality of transmission states including at least one electrical actuator adapted to shift the transmission apparatus between transmission states, said electrical control apparatus comprising:

  • a plurality of momentary contact push buttons, each corresponding to a predetermined transmission state of said plurality of transmission states;

    a transmission state sensing means for generating a present transmission state signal indicative of the current state of the transmission; and

    a logic control unit connected to the at least one electrical actuator, said plurality of momentary contact push buttons, and said transmission state sensing meansfor generating a desired transmission state signal corresponding to one of said plurality of momentary contact push button switches depressed if one or more of said momentary contact push buttons are depressed, said desired transmission state signal corresponding (1) to the single momentary contact push button depressed if only a single momentary contact push button switch is depressed and (2) to one of said plurality of momentary contact push buttons switches depressed in accordance to a predetermined hierarchy of priority from among the momentary contact push buttons switches depressed if more than one momentary contact push button switch is depressed,for determining if said desired transmission state signal differs from said present transmission state signal, andfor controlling the at least one electrical actuator to shift the transmission from the present state of the transmission to the state of the transmission corresponding to said desired transmission state signal if said desired transmission state signal differs from said present transmission state signal.

View all claims
  • 6 Assignments
Timeline View
Assignment View
    ×
    ×