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A petrol engine is supplied with fuel having calorific value 48,000 kJ/kg. The presures in the cylinder at 5% and 70% of the compression stroke are 1.1bar and 4.5bar resectively. Assume that the compression follows the law pV^1/γ = constant. Find the compression rats of the engine. If the relative efficiency of the engine compared with the air standard efftiency is 65%, calculate the specific fuel consumption in kg/kWh

A petrol engine is supplied with fuel having calorific value 48,000 kJ/kg. The presures in the cylinder at 5% and 70% of the compression stroke are 1.1bar and 4.5bar resectively. Assume that the compression follows the law pV^1/γ = constant. Find the compression rats of the engine. If the relative efficiency of the engine compared with the air standard efftiency is 65%, calculate the specific fuel consumption in kg/kWh

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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A petrol engine is supplied with fuel having calorific value 48,000 kJ/kg. The presures in the cylinder at 5% and 70% of the compression stroke are 1.1bar and 4.5bar resectively. Assume that the compression follows the law pV^1/γ = constant. Find the compression rats of the engine. If the relative efficiency of the engine compared with the air standard efftiency is 65%, calculate the specific fuel consumption in kg/kWh
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