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specific air consumption

specific air consumption

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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2 An eight-cylinder, four-stroke engine of 9 cm bore and 8 em stroke with a compression ratio of 7 is tested at 4500 rpm on a dynamonmeter which has 54 cm arnm. During a 10 minutes test the dynamometer seale beam reading was 42 kg and the engine consumed 4.4 kg of gasoline having a calorific value of 44000 kJ/kg. Air 27 °C and 1 bar was supplied to the carburettor at the rate of 6 kg/min. Find (i) the brake power delivered (ii) the brake mean effective pressure (iii) the brake specifie fuel consumption (iv) the brake specific air consumption (v) the brake thermal fficiency (vi) the volumetric efficiency and (vii) the air-fuel ratio,
Transcribed Image Text:2 An eight-cylinder, four-stroke engine of 9 cm bore and 8 em stroke with a compression ratio of 7 is tested at 4500 rpm on a dynamonmeter which has 54 cm arnm. During a 10 minutes test the dynamometer seale beam reading was 42 kg and the engine consumed 4.4 kg of gasoline having a calorific value of 44000 kJ/kg. Air 27 °C and 1 bar was supplied to the carburettor at the rate of 6 kg/min. Find (i) the brake power delivered (ii) the brake mean effective pressure (iii) the brake specifie fuel consumption (iv) the brake specific air consumption (v) the brake thermal fficiency (vi) the volumetric efficiency and (vii) the air-fuel ratio,
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