An eight-cylinder, four-stroke engine of 9 cm bore and 8 cm stroke with a compression ratio of 7 is tested at 4500 rev/min on a dynamometer which has 54 cm arm. During a 10 minutes test the dynamometer scale beam reading was 42 kg and the engine consumed 4.4 kg of gasoline having a calorific value of 44000 kJ/kg. Air at 27°C and 1 bar was supplied to the carburettor at the rate of 6 kg/min. Take R for air = 287 kJ/(kg-K). Find: (4) the brake specific air consumption (bsac), (5) the brake thermal efficiency (7., a), (6) the volumetric efficiency (7ro), and (7) the air-fuel ratio (A/F) on mass basis. Draw the simplified schematic diagram of the plant showing all the necessary data dis- played on it.

An eight-cylinder, four-stroke engine of 9 cm bore and 8 cm stroke with a compression ratio of 7 is tested at 4500 rev/min on a dynamometer which has 54 cm arm. During a 10 minutes test the dynamometer scale beam reading was 42 kg and the engine consumed 4.4 kg of gasoline having a calorific value of 44000 kJ/kg. Air at 27°C and 1 bar was supplied to the carburettor at the rate of 6 kg/min. Take R for air = 287 kJ/(kg-K). Find: (4) the brake specific air consumption (bsac), (5) the brake thermal efficiency (7., a), (6) the volumetric efficiency (7ro), and (7) the air-fuel ratio (A/F) on mass basis. Draw the simplified schematic diagram of the plant showing all the necessary data dis- played on it.

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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Draw the simplified schematic diagram of the plant showing all the necessary data displayed on it

An eight-cylinder, four-stroke engine of 9 cm bore and 8 cm stroke with a compression
ratio of 7 is tested at 4500 rev/min on a dynamometer which has 54 cm arm. During a 10
minutes test the dynamometer scale beam reading was 42 kg and the engine consumed
4.4 kg of gasoline having a calorific value of 44000 kJ/kg. Air at 27°C and 1 bar was
supplied to the carburettor at the rate of 6 kg/min. Take R for air = 287 kJ/(kg-K). Find:
(4) the brake specific air consumption (bsac),
(5) the brake thermal efficiency (7o, uh),
(6) the volumetric efficiency (7voi), and
(7) the air-fuel ratio (A/F) on mass basis.
Draw the simplified schematic diagram of the plant showing all the necessary data dis-
played on it.

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