Article | REF: BM2585 V1

Diesel engines: injection and combustion chamber

Author: Jean-Louis FROMENT

Publication date: April 10, 1999

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3. Combustion chambers

3.1 Direct injection engines

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3.1.1 Operating principle

Combustion in direct injection engines is essentially organized on the basis of air entrainment by fuel jets from the injector.

The combustion chamber, usually located in the piston crown, is shaped to suit the trajectory of the jets. The main rules leading to these choices are :

  • the presence of fresh air around the jets;

  • jet trajectory control;

  • ...
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Combustion chambers