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2. Unit injector - Wikipedia

   en.wikipedia.org/wiki/Unit_injector

   Early Lucas electronic diesel unit injector. A unit injector (UI) is a high-pressure integrated direct fuel injection system for diesel engines, combining the injector nozzle and the injection pump in a single component.

3. Air-blast injection - Wikipedia

   en.wikipedia.org/wiki/Air-blast_injection

   Unlike modern designs, air-blast injected Diesel engines do not have an injection pump. A simple low-pressure fuel-feed-pump is used instead to supply the injection nozzle with fuel. At injection, a blast of compressed air presses the fuel into the combustion chamber, hence the name air-blast injection. The compressed air comes from compressed ...

4. Common rail - Wikipedia

   en.wikipedia.org/wiki/Common_rail

   Diesel fuel injector as installed in a MAN V8 Diesel engine. Common rail direct fuel injection is a direct fuel injection system built around a high-pressure (over 2,000 bar or 200 MPa or 29,000 psi) fuel rail feeding solenoid valves, as opposed to a low-pressure fuel pump feeding unit injectors (or pump nozzles).

5. Indirect injection - Wikipedia

   en.wikipedia.org/wiki/Indirect_injection

   Port injection refers to the spraying of the fuel onto the back of the intake valve, which speeds its evaporation. [1] An indirect injection diesel engine delivers fuel into a chamber off the combustion chamber, either a prechamber or swirl chamber, where combustion begins and then spreads into the main combustion chamber. The prechamber is ...

6. Fuel injection - Wikipedia

   en.wikipedia.org/wiki/Fuel_injection

   The term fuel injection is vague and comprises various distinct systems with fundamentally different functional principles. The only thing all fuel injection systems have in common is the absence of carburetion. There are two main functional principles of mixture formation systems for internal combustion engines: internal and external.

7. Electronically controlled unit injector - Wikipedia

   en.wikipedia.org/wiki/Electronically_controlled...

   As the pump plunger retracts, fuel is drawn into the pump chamber from the fuel supply line. Spill phase The pump plunger begins descending, but the spill valve is open, and fuel recirculates back to the return line. Injection phase Partway through the pump stroke, the solenoid is energized, which closes the spill valve.