Carnot Cycle help - Engine temp reservoirs

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Big Drop
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Hi,

I need some help concerning the Carnot cycle [i've searched, but what i needed didn't come up]. I am trying to work out the efficiency of a 4 or 2 stroke motorcyle engine. [car engine, it doesn't matter really]. But I'm having some difficulty finding temperatures for the hot and cold reservoirs. I've searched the internet for a while...but still can''t come up with anything.

If anyone has any idea please help!

Thanks.
 

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Big Drop said:
Hi,

I need some help concerning the Carnot cycle [i've searched, but what i needed didn't come up]. I am trying to work out the efficiency of a 4 or 2 stroke motorcyle engine. [car engine, it doesn't matter really]. But I'm having some difficulty finding temperatures for the hot and cold reservoirs. I've searched the internet for a while...but still can''t come up with anything.

The hot reservoir temp is typically the combustion temperature, and the low temperature is the temperature at which the gas leaves the useful part of the engine.