Kubota V3600-E3 Shop Manual page 88

V3-E3B SERIES, V3-E3CB SERIES, V3-E3BG SERIES, WSM
(2) External / Mechanical EGR (V3800DI-T-E3B, V3800DI-T-E3CB, V3800DI-T-E3BG)
(1) Thermo Valve
(2) Mechanical EGR Valve
(3) Reed Valve
External / Mechanical EGR consists of water cooled EGR cooler, mechanical EGR valve, reed valve and thermo
valve.
When the coolant temperature is getting higher, thermo valve is open and the boost pressure of intake manifold
gets to reach the diaphragm of mechanical EGR valve.
If the coolant temperature is high, but the boost pressure is low, the EGR valve does not open. If coolant
temperature is high, boost pressure is also high, EGR valve is open and cooled EGR gas through the water cooled
EGR cooler flows into the intake manifold. And the reed valve between EGR valve and intake manifold prevents the
fresh air flowing into EGR system.
(4) Intake Manifold
(5) Exhaust Manifold
(6) EGR Cooler
(a) Boost Pressure
(b) Coolant Temperature
(c) Cooled EGR Gas
(d) To The Intake Manifold
(e) Fresh Air
M-27
DIESEL ENGINE
(f) Cooled EGR Gas Merges
with Fresh Air
(g) Exhaust
(h) Coolant Inlet
(i) Coolant Outlet