Pulse width modulation of brake shift interlock solenoid

Details Pulse width modulation of brake shift interlock solenoid Pulse width modulation of brake shift interlock solenoid

2005-12-20

2005-12-20

Bonck, Rodney H. (Department: 3681)

192 clutches and power-stop control

Transmission and brake

Motor vehicle

C192S220200, C477S096000

Reexamination Certificate

active

06976569

ABSTRACT:
An apparatus and method is provided for an improved brake shift interlock system which reduces solenoid noise created by vehicle vibrations and solenoid activation. The brake shift interlock system includes a park position switch, a brake sensor, and a control circuit. The method includes the sensing of the park position switch and the brake sensor and generating a pulse width modulated control signal having a varying duty cycle for driving the solenoid when predetermined conditions of the park position switch and brake sensor are sensed.

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