Interrelated power delivery controls – including engine control – Transmission control – Engine starting interlock
Patent
1994-08-18
1996-10-08
Bonck, Rodney H.
Interrelated power delivery controls, including engine control
Transmission control
Engine starting interlock
192 4A, 477 96, B60K 4128, B60K 4104, B60K 4126
Patent
active
055625681
ABSTRACT:
A vehicle brake-transmission-ignition interlock system includes a bi-stable solenoid operable to lock and unlock the shift lever in PARK position. Another bi-stable solenoid is operable to block and unblock ignition key movement to OFF position for removal. A controller is responsive to high and low input signals to operate both solenoids. An electric circuit connects to the controller and includes a brake switch closed and opened by applying and releasing the service brake and a parallel shift lever switch opened and closed by movement of the shift lever into and out of PARK position. An ignition switch in series with the brake switch is opened by key movement to OFF position and is closed by key movement to ACCESSORY and RUN positions. Another ignition switch in series with the shift lever switch is opened by key movement to OFF and ACCESSORY positions and is closed by key movement to RUN position. Moving the shift lever to PARK and releasing the service brake opens the brake and shift lever switches to provide a low input signal to the controller which operates the solenoids to lock the shift lever and unblock key movement to OFF position, enabling key removal. Key insertion and movement to RUN position and brake application supplies a high input signal to the controller which operates the solenoids to unlock the shift lever and block key movement to OFF position.
REFERENCES:
patent: 4880092 (1989-11-01), Kito et al.
patent: 5009295 (1991-04-01), Kinkade et al.
patent: 5018610 (1991-05-01), Rolinski et al.
patent: 5062509 (1991-11-01), Carpenter et al.
patent: 5096033 (1992-03-01), Osborn
patent: 5211271 (1993-05-01), Osborn et al.
Bonck Rodney H.
Dura Mechanical Components, Inc.
Greenlee David A.
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