Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1986-09-17
1987-12-29
Reger, Duane A.
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
303116, B60T 886
Patent
active
047156635
ABSTRACT:
A brake oil pressure control device including a main line system for a normal braking operation, and a subline system for antiskid control and acceleration slip control. The main line system connects a master cylinder to a wheel cylinder, and has a first valve which opens the main line for a normal braking operation, and closes the main line when an antiskid control or acceleration slip control is in effect. The subline system has an oil pump connected to the wheel cylinder through a subline having a second valve, which is controlled to open and close the subline for the antiskid control or acceleration slip control. Inlet and outlet ports are connected by a relief pipe having a third valve and a relief valve. The relief valve opens the relief pipe under pressure from the master cylinder when a discharge pressure from the oil pump is higher than the pressure at the master cylinder, to restrain the discharge pressure from the oil pump. The third valve opens the relief pipe for an antiskid control, and closes the relief pipe for an acceleration slip control.
REFERENCES:
patent: 4641895 (1987-02-01), Belart et al.
patent: 4665490 (1987-05-01), Masaki et al.
Hattori Yoshiyuki
Imani Yuichi
Kuno Akira
Matsui Kazuma
Nagata Tetsuya
Nippondenso Co. Ltd.
Reger Duane A.
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