Kubota D1803-CR-E4 - Injector; Outline of Injector; Structure of Injector

3.13 Injector
3.13.1 Outline of injector
The injector injects high pressure fuel from the rail into
the combustion chamber.
3.13.2 Structure of injector
The
injector is made up of a solenoid, command piston,
and nozzle body and the like.
(1) Valve ball
(2) Discharge orifice
(3)
Control chamber
(4) Valve body
(5) Command piston
(6) Nozzle body
(7) Needle valve
(8) Valve spring
(9) Solenoid
(10) Two way valve (TWV)
(11) Suction orifice
(12) Nozzle spring
(13) Nozzle nut
(A) To fuel tank
(B) From rail
(14) ID code
Wiring diagram
(15) Injector
(16) Rated amperage circuit
(17)
High-voltage generating cir-
cuit
(18) Control circuit
(19) Engine ECU
4. ENGINE
MECHANISM
3. Fuel system
4-26
D1803-CR-E4,D1803-CR-TE4,D1803-CR-TIE4,V2403-CR-E4,V2403-CR-TE4,V2403-CR-TE4BG,V2403-CR-TIE4
KiSC issued 12, 2018 A