Page 40 - Introduction to Marine Engineering
P. 40
Diesel engines
Fuel
entry
Timing
Non / valve
return
valve
To fuel
valve
Sliding
rod
Lever
Cam
Figure 2.15 Timing valve
The fuel injector
A typical fuel injector is shown in Figure 2,16, It can be seen to be two
basic parts, the nozzle and the nozzle holder or body. The high-pressure
fuel enters and travels down a passage in the body and then into a
passage in the nozzle, ending finally in a chamber surrounding the
needle valve. The needle valve is held closed on a mitred seat by an
intermediate spindle and a spring in the injector body. The spring
