ass10_corrected

# ass10_corrected - ENGRD 221 ENGINEERING THERMODYNAMICS...

This preview shows pages 1–2. Sign up to view the full content.

ENGRD 221: E NGINEERING T HERMODYNAMICS Problem Set 10 Due: April 10 th 2009, Upson Room 123 (5 Questions) Question 1 (MS 9.6) : A four-cylinder, four-stroke internal combustion engine operates at 2800 RPM. The processes within each cylinder are modeled as an air-standard Otto cycle with a pressure of 14.7 lbf/in. 2 , a temperature of 80°F, and a volume of 0.0196 ft 3 at the beginning of compression. The compression ratio is 10, and maximum pressure in the cycle is 1080 lbf/in. 2 . Determine, using a cold air-standard analysis with k = 1.4, the power developed by the engine, in horsepower, and the mean effective pressure, in lbf/in. 2 . Question 2 (MS 9.14) : A four-cylinder, four-stroke internal combustion engine has a bore of 2.55 in. and a stroke of 2.10 in. The clearance volume is 12% of the cylinder volume at bottom dead center and the crankshaft rotates at 3600 RPM. The processes within each cylinder are modeled as an air-standard Otto cycle with a pressure of 14.6 lbf/in. 2

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 2

ass10_corrected - ENGRD 221 ENGINEERING THERMODYNAMICS...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online