ENGINE
d. Delivery Va l v e
The delivery valve prevents the fuel in the injection
pipe from flowing back into the delivery chamber
and the fuel in the injection nozzle from dribbling
after injection.
1. Valve Spring
4. Fuel Chamber
2. Va l v e
5. Valve Face
3. Valve Seal
6. Relief Plunger
E. FUEL INJCECTION NOZZLE
The nozzle is a throttle-type one. It features low fuel
consumption and works well with DAEDONG
combustion chamber. The nozzle valve opening
pressure is about 13.7 to 14.7 MPa(140 to
11 5 0 k g f /
c m2
, 1990 to 2130 psi), the pressure
overcomes the counterforce of nozzle valve spring,
and push the valve up instantly, the fuel is then
injected in a proper quantity into the swirling air in the
combustion chamber for combustion. Addition or
reduction of adjusting can adjust the opening
pressure. A washer of 0.1mm corresponds to 980
k P a ( 1 0 k g f /
c m2
, 142psi) change in opening pressure.
The heat seal is employed to improve the durability
and reliability of the nozzle.
(1) Nozzle Holder Ass’y (6) Nozzle Body
(2) Adjusting Wa s h e r
(7) Needle Va l v e
(3) Nozzle Spring
(8) Heat Seal
(4) Push rod
(9) Packing
(5) Retaining Nut
