Failure check apparatus for control apparatus of vehicle

Details Failure check apparatus for control apparatus of vehicle Failure check apparatus for control apparatus of vehicle

2007-12-11

2007-12-11

King, Bradley (Department: 3683)

Fluid-pressure and analogous brake systems

Speed-controlled

With failure responsive means

C303S191000, C303S122050

Reexamination Certificate

active

11012338

ABSTRACT:
A failure check apparatus for a control apparatus of a vehicle such as ABS. When the failure check apparatus performs initial check for the ABS, it successively activates each of solenoid valves and a motor provided in the ABS, one at a time, for a predetermined time so as to determine whether a failure has occurred in the ABS. At that time, activation of the motor is started when a certain delay time elapses after the end of activation of the last solenoid valve. The delay time is a time which the vibration generated in the control apparatus upon activation of the last solenoid valve converges. Thus, interference between a vibration wave (sound wave) generated upon actuation of the solenoid valves and a vibration wave (sound wave) generated upon actuation of the motor, which differ in nature of vibration, is prevented.

REFERENCES:
patent: 3790226 (1974-02-01), Liggett
patent: 4872730 (1989-10-01), Takagi et al.
patent: 5492008 (1996-02-01), Schnerer et al.
patent: 5988773 (1999-11-01), Sawada
patent: 6237401 (2001-05-01), Haehn et al.
patent: 63-071468 (1988-03-01), None
patent: 8-244595 (1996-09-01), None
patent: 10-024826 (1998-01-01), None

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