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Air is compressed in a diesel engine cylinder. The initial pressure and temperature are 105 kN/m and 25 °C respectively, and the final pressure is to be 7 MN/m. In order to ignite the fuel charge injected at the end of compression, the temperature required is 700 °E. Calculate the ratio of the initial to final volume for this to be possible. Assumfng that the compression process is polytropic, find the polytropic index of the compression process.

Air is compressed in a diesel engine cylinder. The initial pressure and temperature are 105 kN/m and 25 °C respectively, and the final pressure is to be 7 MN/m. In order to ignite the fuel charge injected at the end of compression, the temperature required is 700 °E. Calculate the ratio of the initial to final volume for this to be possible. Assumfng that the compression process is polytropic, find the polytropic index of the compression process.

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Section C 5. (a) Air is compressed in a diesel engine cylinder. The initial pressure and temperature are 105 kN/m and 25 °C respectively, and the final pressure is to be 7 MN/m. In order to ignite the fuel charge injected at the end of compression, the temperature required is 700°E. Calculate the ratio of the initial to final volume for this to be possible. Assumtng that the compression process is polytropic, find the polytropic index of the compression process.
Transcribed Image Text:Section C 5. (a) Air is compressed in a diesel engine cylinder. The initial pressure and temperature are 105 kN/m and 25 °C respectively, and the final pressure is to be 7 MN/m. In order to ignite the fuel charge injected at the end of compression, the temperature required is 700°E. Calculate the ratio of the initial to final volume for this to be possible. Assumtng that the compression process is polytropic, find the polytropic index of the compression process.
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