Mechanical Timer With Cold Start Advance Function (V3600-E3B, V3800Di-T-E3Bg - Kubota V3600-E3 Shop Manual

V3-E3B SERIES, V3-E3CB SERIES, V3-E3BG SERIES, WSM
[3] MECHANICAL TIMER WITH COLD START ADVANCE FUNCTION
(V3600-E3B, V3800DI-T-E3B, V3600-E3CB, V3800DI-T-E3CB, V3800DI-T-
E3BG)
This device makes the fuel injection timing advanced
by engine oil temperature and engine rpm in order to
improve the engine cold start-ability and reduce the blue
white smoke.
Thermal control
When the engine rpm is low and engine oil
temperature is under 30 °C, the fuel injection timing is
max. advanced.
When the engine rpm is low and engine oil
temperature is higher than 70 °C, the fuel injection timing
advance is 0 degree.
The fuel injection timing advance by engine oil
temperature is controlled with shape memory (storage)
spring.
(1) Timer Flyweight
(2) Injection Pump Gear
(3) Fuel Camshaft
[A] At Cold
[B] At Hot
M-20
DIESEL ENGINE
W1017432
(a) No Gap Between Timer and
Injection Pump Gear
(b) Spring Force
(c) Advanced Injection Timing
(d) Gap Between Timer and
Injection Pump Gear
(e) Advanced Injection Timing
(degree)
(f) Engine Oil Temperature
W1017478