Compression Ignition

Ignition of a fuel charge by the heat of the air in a cylinder, generated by compression of the air, as in the diesel engine.

The rapid compression of air within the cylinders generates the heat required to ignite the fuel as it is injected.

Advantages over Spark Ignition:

Two-Stroke Compression Ignition

The two-stroke Compression Ignition engine does not suffer from the disadvantages of the spark ignition engine which are fuel loss and idling difficulty and hence CI engine is more suitable for two-stroke operation.


"Theory and Design of Automotive Engines", B Dinesh Prabhu, Assistant Professor, P E S College of Engineering, Mandya, KARNATAKA

See also: Diesel Engine, Spark Ignition Engine.

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Subjects: Automotive Mechanical Engineering