An oil engine operating on a dual cycle the pressures in the cy linder at the end of the compression stroke and 60% of the compression stroke are 35bar and 4 bar respectively. Assume that the compression follows the law PV4= C. The ratio of maximum to minimum pressure is limited to 70 and fuel injection is end at 8% from the total stroke. Find the compression ratio of the engine and the thermal efficieney. [Cr=1.005 KJkg.k, Cv= 0.718 KJkg.k]

Elements Of Electromagnetics
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ISBN:9780190698614
Author:Sadiku, Matthew N. O.
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An oil engine operating on a dual cycle the pressures in the cy linder at the end of the compression stroke and 60% of the compression stroke are 35bar and 4 bar respectively. Assume that the compression follows the law PV4= C. The ratio of maximum to minimum pressure is limited to 70 and fuel injection is end at 8% from the total stroke. Find the compression ratio of the engine and the thermal efficieney. [Cr=1.005 KJkg.k, Cv= 0.718 KJkg.k]
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