Pressure supply valve for an adaptive braking and traction contr

Details Pressure supply valve for an adaptive braking and traction contr Pressure supply valve for an adaptive braking and traction contr

1990-08-17

1992-12-22

Oberleitner, Robert J.

Fluid-pressure and analogous brake systems

Speed-controlled

Having a valve system responsive to a wheel lock signal

3031132, 3031192, 303901, B60T 1500

Patent

active

051729636

ABSTRACT:
The pressure supply valve (40) provides hydraulic pressure from a pressure source (20) to the system modulators (46, 46', 48, 48', 52, 52') and isolates a hydraulic boost chamber (34) of a boosted master cylinder (12). The pressure supply valve (40) includes an armature (83) operated piston valve (72) having a through opening (79), a valve seat (85) of the piston valve (72) engageable with a ball valve (68). The ball valve (68) normally prevents fluid flow from the pressure source (20) to the modulators (46, 46', 48, 48', 52, 52'), and the piston valve (72) permits fluid flow through itself during normal and adaptive braking. During traction control operation, the piston valve (72) displaces the ball valve (68) and permits the pressure source (20) to communicate with the modulators (46, 46', 48, 48', 52, 52').

REFERENCES:
patent: 4514981 (1985-05-01), Brown et al.
patent: 4620565 (1986-11-01), Brown
patent: 4714300 (1987-12-01), Heess et al.
patent: 4778226 (1988-10-01), Brown
patent: 4836617 (1989-06-01), Resch
patent: 4840434 (1989-06-01), Leiber
patent: 4844119 (1989-07-01), Martinic
patent: 4848853 (1989-07-01), Mizuno et al.
patent: 5005919 (1991-04-01), Shuey et al.
patent: 5013094 (1991-05-01), Nishii et al.

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