Multi-port solenoid valve in an antiskid brake control apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 22, 1993
Grant Date -
N/A
app pub date -
Sep 26, 1991
filing date -
Oct 16, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A discharge passage communicating a brake cylinder and a low-pressure accumulator is provided with a second orifice. Owing to a pressure differential between pressure upstream of the second orifice and pressure downstream of the orifice, a passage changeover valve is set to a first position, when brake cylinder pressure is decreased during antiskid braking control, at which the passage changeover valve cuts off the discharge side of a pump from the brake cylinder, and to a second position, when brake cylinder pressure is increased, at which the changeover valve communicates the discharge side of the pump with a flow-rate controller and communicates the discharge side of the pump with a master cylinder and the brake cylinder solely through a first orifice in the flow-rate controller. As a result, when pressure is decreased during antiskid braking control, the discharge side and the intake side of the pump are completely cut off from each other so that the burden upon the pump is reduced.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully