This presentation is the property of its rightful owner.
1 / 2

# Compression Ratio Vs. Compression Pressure PowerPoint PPT Presentation

Compression Pressure. Compression Ratio. Compression Ratio Vs. Compression Pressure. Definition: __________________________________________________________________________________________. Definition: __________________________________________________________________________________________.

Compression Ratio Vs. Compression Pressure

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

#### Presentation Transcript

Compression Pressure

Compression Ratio

## Compression Ratio Vs. Compression Pressure

Definition:__________________________________________________________________________________________

Definition: __________________________________________________________________________________________

Boyle’s law: ______________________________________________________

Isothermal: ______________________________________________________

How is it obtained?______________________________________________________

How is it obtained? ______________________________________________________

Typical range of values:__________________

Typical range of values: __________________

### Solve the following problem

• An engine has a static compression ratio of 9:1

• What would the cylinder pressure be if compression was perfectly isothermal? (assume no leakage) Pcompression =C.R. X Patmospheric

• What would the cylinder pressure be if compression was perfectly Adiabatic? (assume no leakage) Pcompression =Patmospheric X C.R.1.4

• If this engine made 200 p.s.i.g. on the compression tester, would it be closer to isothermal or adiabatic compression?

• What is the adiabatic index used in this formula?

• What does the adiabatic index describe?