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EP0328082A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Antilock control device

Assignee: Sumitomo Electric Industries Ltd
•
Filing: 1989-02-08
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Granted: —
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Expires: 2009-02-08
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Abstract

Abstract An antilock control device for the brake assembly of a motor vehicle having the function of detecting ON and OFF signals supplied from a brake lamp switch (sw) and representative of the operative and inoperative positions of the brake pedal. When the signal changes from OFF to ON, which means that the brake pedal has been trodden, the antilock control function is disabled so that the pressure generated in the master cylinder will be directly applied to the wheel cylinders. This state continues until the antilock device detects locking tendency of any wheel. In addition to the brake lamp switch signals, signals representative of the ON and OFF positions of the accelerator pedal may be supplied to the antilock control device so that the antilock control function will be disabled when either the accelerator pedal position signal changes from ON to OFF or the brake pedal position signal changes from OFF to ON.

Inventors

  • 👤 Masato C/O Itami Works Of Sumitomo Yoshino
  • 👤 Shunsuke Kawasaki
  • 👤 Fumio Kageyama
  • 👤 Shinji Umehira

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-04 06:39
CPC Classifications
B; B60; B60T; B60T8/00; B60T8/32; B60T8/88; B60T8/885

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 154 words
An antilock control device, comprising wheel speed detecting means, processing/lock state detecting means which executes logical operations on the basis of the wheel speed signals supplied from wheel speed detecting means to issue commands to reduce, hold or increase the brake pressure, a solenoid actuating means for actuating solenoids for pressure control valves in brake pressure circuits in response to said commands from said processing/lock state detecting means, a brake pedal position detecting means for judging whether the brake pedal is its operative or inoperative position, and control means for selecting one of said three commands to bring the brake pressure up to the hydraulic pressure of the master cylinder as quickly as possible, if said brake pedal position detecting means detects the change of the brake pedal position signal from OFF to ON, so that said command will continue until said processing/lock state detector means detects a locking tendency of the respective wheel.
Claim 2
Dependent Claim 154 words
An antilock control device, comprising wheel speed detecting means, processing/lock state detecting means which executes logical operations on the basis of the wheel speed signals supplied from wheel speed detecting means to issue commands to reduce, hold or increase the brake pressure, a solenoid actuating means for actuating solenoids for pressure control valves in brake pressure circuits in response to said commands from said processing/lock state detecting means, a brake pedal position detecting means for judging whether the brake pedal is its operative or inoperative position, and control means for selecting one of said three commands to bring the brake pressure up to the hydraulic pressure of the master cylinder as quickly as possible, if said brake pedal position detecting means detects the change of the brake pedal position signal from OFF to ON, so that said command will continue until said processing/lock state detector means detects a locking tendency of the respective wheel.
Claim 3
Dependent Claim 81 words
An antilock control device as claimed in claim 1, further comprising an accelerator pedal position detecting means for judging whether the accelerator pedal is in its operative or inoperative position, said control means selecting said one of said three commands if said brake pedal position detecting means detects the change of the brake pedal position signal from ON to OFF or if said accelerator pedal position detecting means detects the change of an accelerator pedal position signal from OFF to ON.

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