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# A diesel engine operates at 3000 rpm on a standard Diesel cycle has a compression ratio...

A diesel engine operates at 3000 rpm on a standard Diesel cycle has a compression ratio of 14. The state of air at the beginning of the compression process is 98 kPa and 24 ?C. The maximum temperature in the cycle is not exceed 1850 ?C. Assume diesel fuel has a heating value of 45 MJ/kg. Use the PG model.

a) Determine the thermal efficiency.

b) Determine the specific fuel consumption. (kg/kJ)

c) What-if Scenario: What would the thermal efficiency be if the engine operates at 2500 rpm instead?

d) What-if Scenario: What would the specific fuel consumption be if the engine operates at 2500 rpm instead? (kg/kJ)

**************************************b and d NEED TO BE IN kg/kJ******************************

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