Braking system in conjunction with a hydrodynamic retarder, spec

Details Braking system in conjunction with a hydrodynamic retarder, spec Braking system in conjunction with a hydrodynamic retarder, spec

1995-11-27

1998-06-30

Graham, Matthew C.

Brakes

Internal-resistance motion retarder

Using a rotary-type fluid damper

477183, B60T 1002, B60T 1087, F16D 5704

Patent

active

057719977

ABSTRACT:
The invention relates to a braking system, specifically for a motor vehicle, with a hydrodynamic retarder featuring a stator impeller wheel and a rotor impeller wheel, a working medium sump, and a control device for controlling the degree of working space filling of the retarder. The control device includes a proportional valve as well as a connecting line to the sump, and the sump communicates with the working space of the retarder by way of a riser duct. A venting duct communicable with the sump whereby air pressure generated by the non-braking operation of the retarder can be vented from the sump to the atmosphere thereby providing a pressure balance of the forces acting on the level of the working medium sump.

REFERENCES:
patent: 3180692 (1965-04-01), Muller
patent: 3547231 (1970-12-01), Braun
patent: 3951242 (1976-04-01), Fischer et al.
patent: 3958671 (1976-05-01), Muller
patent: 4864872 (1989-09-01), Stahl

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