Brakes – Internal-resistance motion retarder – Using a rotary-type fluid damper
Patent
1981-08-07
1984-04-03
Stoner, Jr., Bruce H.
Brakes
Internal-resistance motion retarder
Using a rotary-type fluid damper
192 4B, 60337, 188264E, F16D 5700, F16D 6578, B60K 4126
Patent
active
044402724
ABSTRACT:
A hydraulic retarder, especially for an automotive vehicle, comprising a control valve which regulates the pressure of the hydraulic fluid supplied to the decelerator which can be connected to a heat exchanger for dissipating the thermal energy generated by the retardation of the vehicle. According to the invention a regulating valve is additionally provided for controlling the maximum pressure in dependence upon temperature and in response to a temperature sensor. The device thus limits the maximum retarder effect in accordance with the temperature of the hydraulic medium and hence the utility of the heat exchanger to dissipating the braking energy.
REFERENCES:
patent: 3090195 (1963-05-01), Fisher et al.
patent: 3451511 (1969-06-01), Knapp
patent: 3533493 (1970-10-01), Braun
patent: 3593828 (1971-07-01), Klein
patent: 3952508 (1976-04-01), Bopp
patent: 4061214 (1977-12-01), Ternehall
patent: 4072220 (1978-02-01), Hamada
Manual entitled "Retarder for ZF Transmatic", Zahnradfabrik Friedrichshafen AG, Friedrichshafen, W. Germany, Oct. 1978.
Dubno Herbert
Oberleitner Robert J.
Ross Karl F.
Stoner Jr. Bruce H.
Zahnradfabrik Friedrichshafen AG
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