| Fan Clutch Idea [message #175015] |
Fri, 29 June 2012 11:08  |
A Hamilto
Messages: 4508
Registered: April 2011
Karma:
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Senior Member |
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I started thinking about electric fans and how to get around some of the disadvantages, when it struck me that one of my ideas didn't require an electric motor. All you need is a clutch like the one on the AC compressor to engage the fan. It would be controlled by a theremal switch just like the electric fans on newer cars. It would then be free-wheeling when not engaged (like the current clutch) and would engage when the ENGINE TEMPERATURE demanded it, NOT when the thermal goo in the existing one sensed the temperature from the radiator, or blowback from the exhaust manifold makes it think it is time to engage. Seems like an improvement over the OEM method.
I imagined a hollowed out AC compressor with the shaft being driven off the WP and the fan being a replacement of the pulley. When the clutch engages, the shaft turns what would have been the pulley on an AC compressor, but in this implementation, it is a fan. Instead of the pulley turning the shaft when engaged, the shaft turns the fan when engaged.
Maybe someone out there smarter than me can come up with a simpler way to install an AC compressor clutch on the radiator fan than that.
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