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US 5,492,395 AGranted
Antilock brake control system
AssigneeAisin Seiki Kabushiki Kaisha
InventorsIwao Naruse, Motohide Takeuchi
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Abstract
An antilock brake control system comprises an output judging device for outputing pumping signal and control signals for controlling the fluid pressure based on a signal from a sensor device for detecting the rotational speed of a wheel, and an inhibiting device for interrupting the control signals when the pumping signal indicates an abnormal condition.
Claims1
An anti-lock brake control system comprising:
- a reservoir for storing therein an amount of fluid;
- a master cylinder;
- a plurality of wheel cylinders provided for a plurality of corresponding wheels;
- a plurality of control valves each of which is designed for establishing fluid communication of a respective wheel cylinder to a selected one of the master cylinder and the reservoir;
- a plurality of solenoids each of which is connected to a battery and a control valve;
- a first switch for turning on said solenoids concurrently to activate the corresponding control valves;
- motor means including a motor, a second switch interposed between the motor and the battery, and a pump driven by the motor upon closure of the second switch for returning the fluid from the reservoir to the master cylinder;
- control means for controlling the solenoids and the motor means based on the rotational speed of any one of the wheels;
- pumping signal output means for outputting a pumping signal when the pumping signal indicates a normal condition;
- and
- inhibiting means for opening the first and the second switches when the pumping signal indicates an abnormal condition.
8 more elements
Dependencies are inferred from the claim text.