Some engines use a spark to ignite their fuel, and others rely on compression. What does all of that mean? And how do the two kinds of engines differ?

Compression test kits do just what they say: measure the ability of each cylinder of your engine to combust the fuel/air mixture without losing any of the resulting energy.

What is compression ignition? Compression ignition basically is the term that is used for describing the manner in which diesel engines function.

HCCI engines have a compression ratio of 12:1 (similar to that of a conventional direct-injected gas engine), so they can run on regular pump gas and E85.

Applying a suitable design optimization technique is a crucial task for optimizing compression ignition engines because of the time-consuming process of optimization even with advanced supercomputers.

Eliminate engine detonation without retarding the ignition timing or losing engine power, throttle response, or fuel economy - High Performance Pontiac Magazine ...