Power plants – Pressure fluid source and motor – Coaxial impeller and turbine unit
Patent
1985-10-23
1987-05-19
Look, Edward K.
Power plants
Pressure fluid source and motor
Coaxial impeller and turbine unit
192 58B, 192 82T, F16D 3300, F16D 3100
Patent
active
046656944
ABSTRACT:
The fluid friction coupling, which is suitable especially for a fan of an internal combustion engine, comprises a buffer chamber (39) which receives a part of the entire quantity of shear fluid contained in the coupling, through an inlet opening (43) placed beneath the shear fluid level (47), when the coupling is not in rotation. The received partial quantity lowers the liquid level in the shear gaps (23). In cold starting therefore the coupling transmits a reduced torque, which by reason of the consequently increased slip increases the pump effect of a pump device (37) and reduces the fan noise. The quantity of shear fluid contained in the buffer chamber (39) is delivered again to the shear fluid cycle of the coupling with time retardation through a constricted opening (45) when the coupling is in operation.
REFERENCES:
patent: 3059745 (1962-10-01), Tauschek
patent: 3648811 (1970-06-01), La Flame
patent: 4064980 (1977-12-01), Tinholt
patent: 4076110 (1978-02-01), Tinholt
patent: 4312433 (1982-01-01), Bopp
Fichtel & Sachs AG
Look Edward K.
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