A four-cylinder spark-ignition engine with a compression ratio of 8 has a pistons with a bore of 9 cm and a stroke of 10 cm. The air pressure at the beginning of the compression is 98 kPa, and the temperature is 37 oC. The engine may be modeled by the air-standard Otto cycle. The maximum cycle temperature is 1700 oK. If the engine produces 75 kW of power, determine a) the heat supplied per cylinder; b) the thermal efficiency; and c) the rpm required.
A four-cylinder spark-ignition engine with a compression ratio of 8 has a pistons with a bore of 9 cm and a stroke of 10 cm. The air pressure at the beginning of the compression is 98 kPa, and the temperature is 37 oC. The engine may be modeled by the air-standard Otto cycle. The maximum cycle temperature is 1700 oK. If the engine produces 75 kW of power, determine a) the heat supplied per cylinder; b) the thermal efficiency; and c) the rpm required.
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 four-cylinder spark-ignition engine with a compression ratio of 8 has a pistons
with a bore of 9 cm and a stroke of 10 cm. The air pressure at the beginning of the
compression is 98 kPa, and the temperature is 37 oC. The engine may be modeled by the
air-standard Otto cycle. The maximum cycle temperature is 1700 oK. If the engine
produces 75 kW of power, determine a) the heat supplied per cylinder; b) the thermal
efficiency; and c) the rpm required.
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