Injection Pump With F.s.p. (V3800Di-T-E3B, V3800Di-T-E3Cb, V3800Di-T-E3Bg - Kubota V3600-E3 Shop Manual

V3-E3B SERIES, V3-E3CB SERIES, V3-E3BG SERIES, WSM
[6] INJECTION PUMP WITH F.S.P. (V3800DI-T-E3B, V3800DI-T-E3CB,
V3800DI-T-E3BG)
The fuel injection pump with F.S.P. (Fine Spill Port)
mechanism is equipped with two functions: speed timer
function and injection rate control function.
The former function works like this. As the rpm is low,
the injection timing gets delayed. This helps cut down on
NOx and operating noise.
The latter function serves to keep down the initial
injection rate and keep up the later injection rate, which
cuts down on NOx and PM as well.
(1) Fine Spill Port (F.S.P.)
(2) Plunger Chamber
(3) Main Port
(4) Cylinder
M-24
DIESEL ENGINE
(5) Plunger
(6) F.S.P. Stroke
(7) Leaking Fuel at Initial Fuel
Pressure-Feed Stage
W1014969