Why is the term CI commonly used as an acronym for diesel engines?
A) All diesel engines use this fuel ignition method.
B) Diesel engines compress a rich air/fuel mixture before igniting it with glow plugs.
C) Older spark ignited diesel engines are no longer manufactured and CI is the new standard.
D) It describes the type of emissions controls used on diesels.

Question

Quizplus · Accepted Answer

CI stands for Compression Ignition, which is the method all diesel engines use to ignite fuel. Unlike gasoline engines that use spark ignition, diesel engines compress air to a high temperature and then inject fuel, which ignites due to the high temperature of the compressed air.

Why Is the Term CI Commonly Used as an Acronym