Anti-skid brake control system for automotive vehicle with feature of assuring prevention of wheel-locking at any driving condition

Patent · Tue Feb 14 04:00:00 EST 1989

OSTI ID:6051260

Matsuda, T

An anti-skid brake control system is described for an automotive vehicle, comprising: a hydraulic brake circuit including wheel cylinders for establishing braking pressure for decelerating vehicular wheels; first and second anti-skid brake control valves, each associated at least one of first and second wheel cylinders which are associated with first and second wheels for adjusting braking pressure therein, each of the anti-skid brake control valves being operable to increase braking pressure in the associated wheel cylinder in a first mode position, and to decrease the braking pressure in the associated wheel cylinder in a second mode position; first sensor for monitoring rotation speed of the first wheel for producing a first wheel speed indicative signal; second sensor for monitoring rotation speed of the second wheel for producing a second wheel speed indicative signal; first means for monitoring wheel slippage at the first and second wheels based on the first and second wheel speed indicative signals and detecting a wheel slippage at one of the first and second wheels when the wheel slippage increases across a given slippage threshold for operating the first and second anti-skid brake control valves in the second mode position; and second means for detecting the first and second wheel speed indicative signals for operating the first and second anti-skid brake control valves in the first mode position when a predetermined brake condition is satisfied while the first and second anti-skid brake control valves are in the second mode position, the second means increasing a rate of braking pressure in the first and second wheel cylinders in response to the detection so that the braking pressure in a third wheel cylinder is increased at a greater increasing rate than that in a fourth wheel cylinder.

• Assignee: Nissan Motor Co., Limited, Yokohama
• Patent Number(s): US 4805103
• OSTI ID: 6051260
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330601* -- Vehicle Design Factors-- Body & Chassis
ANGULAR VELOCITY
BRAKES
CONTROL EQUIPMENT
CONTROL SYSTEMS
CYLINDERS
EQUIPMENT
FAILURES
FLOW REGULATORS
FLUID MECHANICS
HYDRAULICS
MACHINE PARTS
MEASURING INSTRUMENTS
MECHANICS
MONITORS
VALVES
VEHICLES
VELOCIMETERS
VELOCITY
WHEELS