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FM/DM threads Everything about FM/DM in CoD

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Old 08-25-2011, 04:53 PM
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Any one know why the German engines were so lightly boosted?
Because the German engines typically had higher compression ratio's....

This is another advantage to direct fuel injection and by product of a more accurate fuel metering system.
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Old 08-25-2011, 04:57 PM
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In addition, the German engine operates at 6.5 : 1 compression ratio against the 6.0: 1 of the Merlin. This difference in compression ratio should give the German engine an advantage of rather more than 3 per cent, in power output, and at the same time 3 per cent, lower fuel consumption.
http://www.flightglobal.com/pdfarchi...0-%200563.html
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