PRINCIPLES GASOLINE/DIESEL FUEL SYSTEMS - OD1620 - LESSON 2/TASK 2
The pressure is relieved in the line by the increase in volume as the
delivery valve seats.
(3) Fuel Injectors (figure 44). For proper engine performance, the
fuel must be injected into the combustion space in a definite spray pattern.
This is accomplished by the fuel injector.
FIGURE 44. MULTIPLE UNIT INJECTOR.
(a) The fuel enters the nozzle holder body through the high
pressure inlet. It then passes down to the pressure chamber above the valve
seat.
(b) At the moment the pressure developed by the injection pump
exceeds the force exerted by the
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