Title:
ABNORMALITY JUDGING DEVICE FOR VEHICLE BRAKING FORCE CONTROL DEVICE
Document Type and Number:
Japanese Patent JP3899669
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To specify abnormal part which can be specified by a prior abnormality judging device in a brake force control device.
SOLUTION: The device has a master cylinder pressure sensor, two stroke sensors, a wheel cylinder pressure sensor, and an electronic control device. The electronic control device, when difference between detected values Sp1, Sp2 by the two stroke sensors is within a given value, and detected values by the two stroke sensors are less than a standard value based on a detected value Pm by the master cylinder pressure sensor (S90), opens an opening/closing valve and connects a master cylinder with a wheel cylinder (S100), compares the detected value Pm with a detected value Pfr by the wheel cylinder sensor, and therefore, whether the master cylinder pressure sensor is abnormal or stroke of a brake pedal is abnormal is specified (S120, S130, S160).
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Inventors:
Yutaka Onuma
Junichi Sakamoto
Masayuki Soga
Junichi Sakamoto
Masayuki Soga
Application Number:
JP12814298A
Publication Date:
March 28, 2007
Filing Date:
April 22, 1998
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
B60T17/22; (IPC1-7): B60T17/22
Domestic Patent References:
| JP10044965A | ||||
| JP4232154A |
Attorney, Agent or Firm:
Patent business corporation Prospec patent office