Question

The ideal gasoline engine operates on the Otto cycle. use air as a working medium At initial conditions, the air pressure is 1.013 bar, the temperature is 37 ° C. When the piston moves up to the top dead center, the pressure is 20.268 bar. If this engine has a maximum pressure of 44.572 bar, the properties of the air are kept constant. at k =1.4, Cp=1.005 kJ/kgK, Cv = 0.718 kJ/kgK and R = 0.287 kJ/k Find 1.What is the compression ratio of the Otto cycle? 2.What is the climatic temperature after the compression process? 3.How much work is used in the compression process? 4.What is the maximum process temperature? 5.How much heat goes into the process? 6.What is the direct temperature after expansion? 7.How much exactly is the work due to expansion?

          The ideal gasoline engine operates on the Otto cycle. use air as
a working medium At initial conditions, the air pressure is 1.013
bar, the temperature is 37 ° C. When the piston moves up to the top
dead center, the pressure is 20.268 bar. If this engine has a
maximum pressure of 44.572 bar, the properties of the air are kept
constant. at k =1.4, Cp=1.005 kJ/kgK, Cv = 0.718 kJ/kgK and R =
0.287 kJ/k
Find
1.What is the compression ratio of the Otto cycle?
2.What is the climatic temperature after the compression
process?
3.How much work is used in the compression process?
4.What is the maximum process temperature?
5.How much heat goes into the process?
6.What is the direct temperature after expansion?
7.How much exactly is the work due to expansion?

Added by Derek W.

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