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Location:
Adelaide, South Australia
Registered:
March 2005
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Re: Av Gas
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Sat, 21 May 2005 01:45
 
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| 170bhp wrote on Fri, 20 May 2005 10:31 |
when they are at altitude the will lean the motor off from inside the cabin to increase fuel economy.
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While this is partially true, the real reason is that as altitude increases, atmospheric pressure drops, thus less Oxygen to burn. The mixtures are leaned off to keep the A/F ratio in a desirable range, and not have the motor running too rich. Fuel is not leaned off like this in turbocharged air craft engines, as the turbocharger keeps air pressure constant.
Jordan
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