Otto and Diesel cycles: Which PV diagram is for SI and CI?

[lee123456789]

Homework Statement

writie about engines

Relevant Equations

none

Writing about Engines and just muddled up diagrams and confused now. Which PV diagrams is for Compression Ignition and which one for Compression Ignition.

I think one on left is CI and right SI.

Cheers

 

[Chestermiller]

What does SI stand for?

 

[Gordianus]

It may be Spark Ignition

 

[Chestermiller]

The first picture is Diesel (compression ignition) and the 2nd picture is Otto (spark ignition).

 

[lee123456789]

Ci compression ignition. Si spark ignition.