Kubota WSM L3560 Workshop Manual page 129

L3560, L4060, L4760, L5060, L5460, L6060, WSM
Part
Two way
electromagnetic valve
Suction, discharge
orifice
Valve piston
Nozzle spring
Nozzle
Electromagnetic valve that is operated through turning current to a solenoid ON and
OFF controlling flowing in and flowing out of fuel from the rail to the control chamber.
This sets the raise and lower speed of the needle valve through constricting discharge
and suctioning of fuel into the control chamber. Also, sets a slight delay between
operation of the two way electromagnetic valve and operation of the needle valve
enabling reliable injection of very low amounts.
Raises and lowers a nozzle needle through changing pressure in the control chamber
provided on top of the piston.
Along with control chamber pressure causes the needle valve to be in close contact with
the nozzle body preventing leaking of high pressure fuel from the rail.
Part that performs fuel injection. The needle valve is raised and lowered based on
change to pressure in the control chamber, opens and closes the fuel injection port, and
while the valve is open, atomizes and injects fuel from the rail.
Injector Structure
Injectors consist of nozzle components (nozzle body
(6), needle valve (7), nozzle spring (12), nozzle nut (13))
and control components (control chamber (3), solenoid
(9), valve spring (8), TWV (Two Way Valve) (10), valve
ball (1), valve body (4), command piston (5), suction
orifice (11), discharge orifice (2).
(1) Valve Ball
(2) Discharge Orifice
(3) Valve Spring
(4) Valve Body
(5) Command Piston
(6) Nozzle Body
(7) Needle Valve
(8) Valve Spring
Function
1-M14
ENGINE
(9) Solenoid
(10) TWV (Two Way Valve)
(11) Suction Orifice
(12) Nozzle Spring
(13) Nozzle Nut
(A) To Fuel Tank
(B) From Rail
9Y1210824ENM0020US0
KiSC issued 03, 2016 A