Title:
【発明の名称】車輪アンチロック装置を備えた自動車用流体ブレーキ回路
Document Type and Number:
Japanese Patent JP2678366
Kind Code:
B2
Abstract:
1. A hydraulic brake circuit for a motor vehicle equipped with a wheel anti-lock device, this circuit comprising : - a master cylinder (2) controlled by a pedal, and at least one brake associated with a wheel of the vehicle, - a filter element (11) for isolating the master cylinder from the pressure pulses generated in the circuit during the functioning of the anti-lock device, - a solenoid valve (16) having a first, a second and a third port, the first and second ports being connected in order to close the brake circuit normally, and the second and third ports being connected, during the control of the anti-lock device, in order to relieve the pressure in the wheel brake connected to said second port (b) by putting the latter in communication, by means of said third port (c), with a first accumulator (22) and the inlet of a pump (23), the outlet of which is connected to a second accumulator (24) and to said filter element (11), the pump being started up by the anti-lock control device at the same time as the solenoid valve (16), in such a way that the pressure of the fluid in the second accumulator (24) causes the closing of the valve (11) and therefore the isolation of the master cylinder, - said circuit being characterized in that it comprises a pilot-controlled valve (6, 31) sensitive to the relief of the pressure in said wheel brake, said pilot-controlled valve (6, 31) comprising a valve (7) having a head (8) and an end opposite said head and defining a first chamber (19, 39), in which is located a spring (9) which loads said valve (7) towards the opening position, said first chamber (19, 39) communicating with said wheel brake and with said second port (b) of said solenoid valve (16), and a second chamber (14, 37) which said head (a) of said valve (7), in the closing position on its seat, divides into a first and a second compartment, said first compartment, of which the effective cross-section on said valve (7) is larger than that of said second compartment, being connected to said master cylinder, and said second compartment being connected to said first port (a) of said solenoid valve (16), a restriction being provided between said second accumulator (24) and said second compartment of said second chamber.
Inventors:
Gilbert Kerbagore
Application Number:
JP4240988A
Publication Date:
November 17, 1997
Filing Date:
February 26, 1988
Export Citation:
Assignee:
Bendix France
International Classes:
B60T8/40; B60T8/1761; B60T8/42; (IPC1-7): B60T8/40
Domestic Patent References:
| JP56142733A | ||||
| JP56128251A | ||||
| JP5519700A | ||||
| JP5795241A | ||||
| JP5873461A | ||||
| JP58101859A |
Attorney, Agent or Firm:
Kimura Masami