Take Y for air is 1.4. 1. Compression Ignition Engine Assumed to be operating n an ideal air standard diesel cycle, it has a compression ratio of 6 + and a cut off ratio of 3.6, the maximum cycle temperature is 1400+ p °C and the minimum cycle temperature is 75+ p °C.m³ 2. Spark ignition Engine Due to lack of other information, it is assumed to be operating on the ideal air standard Otto cycle, this four-cylinder engine has a swept volume of 1.4 litres and the clearance volume in each cylinder is 70+°C cm³. The inlet temperature of the air is 27°C and the maximum cycle temperature is 1900+ °C. Having determined the efficiency of different above engines, you should review these efficiencies by comparing them with each other and comparing values with published efficacy data for these types of engines.

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