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On what factor does the temperature of the engine depend?

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in Engineering Chemistry II by (789k points)
On what factor does the temperature of the engine depend?

(a) Rate of oxidation

(b) Size of the engine

(c) Compression ratio of the engine

(d) Fuel used in the engine

This question was addressed to me during an interview.

This interesting question is from Knocking in section Fuels and Combustion of Engineering Chemistry II

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Right choice is (c) Compression ratio of the engine

Easy explanation: Compression ratio is the ratio of the cylinder volume at the end of the suction stroke to the volume at the end of the compression stroke of the piston. Rate of oxidation is depended on the temperature.

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