Valve apparatus for a non-muscular-energy-assisted brake circuit

Details Valve apparatus for a non-muscular-energy-assisted brake circuit Valve apparatus for a non-muscular-energy-assisted brake circuit

1996-09-09

1998-10-06

Graham, Matthew C.

Fluid-pressure and analogous brake systems

Speed-controlled

Having a valve system responsive to a wheel lock signal

3031152, B60T 834

Patent

active

058166688

ABSTRACT:
A valve apparatus for a non-muscular-energy-assisted brake circuit of a hydraulic brake system is disclosed. The apparatus has a restriction valve whose valve body in a controlled manner limits a restriction gap through which a hydraulic fluid is forced in non-muscular-energy-assisted braking operation in order to establish a defined dynamic pressure in a pressure chamber in which a valve plunger having a through-hole is provided. The dynamic pressure can be applied to a tensioner. If the non-muscular-energy assistance fails, the valve plunger can be closed to generate a residual braking pressure in the pressure chamber using the valve body when the through-hole is closed. Since the restriction gap is located at the through-hole, a very compact valve apparatus is created, in which the valve body not only limits the restriction gap but also serves as a sealing closure element for the through-hole and serves to directly control the valve plunger, while the brake pressure in the pressure chamber is present at all times directly at the valve body and therefore can be fed back in a desirable manner to the brake pedal.

REFERENCES:
patent: 4892364 (1990-01-01), Burgdorf
patent: 5135292 (1992-08-01), Friedow
patent: 5188436 (1993-02-01), Devall
patent: 5354123 (1994-10-01), Albert
patent: 5538336 (1996-07-01), Reuter et al.
patent: 5658057 (1997-08-01), Ohnuma et al.

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