Internal-combustion engines – Cooling – Devices for cooling liquid by air flow
Patent
1998-02-06
1999-08-31
Yuen, Henry C.
Internal-combustion engines
Cooling
Devices for cooling liquid by air flow
123 4148, 123 4111, F01P 700
Patent
active
059439866
ABSTRACT:
A liquid-cooled IC engine is in combination with a heat exchange apparatus therefor and the apparatus includes a radiator and a belt-driven fan. In the improvement, a pair of fan support stanchions are fixed with respect to the radiator and a fan carrier assembly is slide-mounted with respect to them. In a highly preferred embodiment, there are two springs urging the assembly for translational movement in a belt-tensioning direction. A tube-like arbor is mounted with respect to the panel and a bearing-supported shaft extends through the arbor and couples the fan and a driven fan pulley to one another. A flexible belt is driven by the crankshaft pulley and drives the fan pulley. The crankshaft pulley rotates at engine speed and has a first diameter and the fan pulley has a second diameter greater than the first diameter. The fan pulley (and the fan) rotate at a speed less than engine speed, thereby reducing fan noise.
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Kern Robert D.
Ruehlow Gerald C.
Generac Power Systems, Inc.
Huynh Hai
Yuen Henry C.
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