/A mechanic has an engine from a 1950 model car which works on the basiS of Otto cycle. The engine displaces 1.8 liters, has a compression ratio of 10.2:1 and has six cylinders. The piston in the original engine are 120 mm in diameter. The mechanic bores the cylinder and replaces the piston with new pistons that are 2 mm larger in diameter than the originals. Keeping all other factors same. (a) What will be the percentage change in power output? (b) By what percentage will the engine efficiency change?

/A mechanic has an engine from a 1950 model car which works on the basiS of Otto cycle. The engine displaces 1.8 liters, has a compression ratio of 10.2:1 and has six cylinders. The piston in the original engine are 120 mm in diameter. The mechanic bores the cylinder and replaces the piston with new pistons that are 2 mm larger in diameter than the originals. Keeping all other factors same. (a) What will be the percentage change in power output? (b) By what percentage will the engine efficiency change?

Automotive Technology: A Systems Approach (MindTap Course List)

6th Edition

ISBN:9781133612315

Author:Jack Erjavec, Rob Thompson

Publisher:Jack Erjavec, Rob Thompson

Chapter9: Automotive Engine Designs And Diagnosis

Section: Chapter Questions

Problem 13RQ: The stroke of an engine is the crank throw half twice four times equal to

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