Operational and Maintenance Manual G11 Series
3.2 Engine Cooling Systems
3.2.1 G11 Series Engine Cooling System
Fig. 29 3G11 series engine cooling system
1.
Water out to radiator
2.
Thermostat
3.
Bypass
4.
Water pump
5.
Water in from radiator
6.
Oil cooler cavity
7.
Cylinder head
8.
Water manifold
9.
Weeping hole
G11 series engines are water-cooled engines. The
water pump is gear driven. The water is cooled by
a radiator fan system. The fan is driven by a fan
drive system and is not mounted on the water
pump. The water also cools lube oil in the lube oil
cooler.
A thermostat (74ºC start to 82ºC full open) controls
the water temperature. The radiator has a pressure
cap, which maintains the static pressure at 0.5 bar
(7 psi). A drain plug is provided to drain the
system. The water system provides adequate
cooling in a simple and efficient manner to satisfy
the cooling needs of canopy enclosed genset
application.
Fig.30 Cooling System diagram for G11 Series Engines
Fig.31 4G11 Series Cooling System
1.
Water outlet manifold
2.
Cylinder water cavity
3.
Water core
4.
Water out
5.
Bypass
6.
Water pump
7.
Water in
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