![]() ![]() The balance of fuel that had not participated in premixed combustion is consumed in the rate-controlled combustion phase.Ĭombustion in diesel engines is very complex and until the 1990s, its detailed mechanisms were not well understood. As the piston continues to move closer to top dead center, the mixture temperature reaches the fuel’s ignition temperature, causing ignition of some premixed quantity of fuel and air. ![]() During a phase known as ignition delay, the fuel spray atomizes into small droplets, vaporizes, and mixes with air. Abstract: In diesel engines, fuel is injected into the engine cylinder near the end of the compression stroke.
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