Why does diesel engine initiate 2 stage fuel injection? What is the reason for that?

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Mechanical Engineering

Why does diesel engine initiate 2 stage fuel injection?
What is the reason for that?

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Main purpose of the fuel injection system is to deliver fuel into the cylinders of an engine 1 Fuel must be injected at the proper time that is the injection timing must be controlled 2 The correct amount of fuel must be delivered to meet power requirement that is injection metering must be controlled 3 fuel atomization and vapourisation While conventional fuel injection systems employ a single injection event for every engine cycle newer systems can use multiple injection eventsThe main injection event provides the bulk of the fuel for the engine cycle One or more injections before the main injection preinjections provide a small amount of fuel before the main injection event Preinjections can also be referred to as pilot injection Some refer to a preinjection that occurs a relatively long time before the main injection as a pilot and one that occurs a relatively short time before the main injection as a preinjection Injections after the See Answer

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