COOLING SYSTEM
SECTION 3.4
DDFP
Page 25
The Engine Cooling System Includes:
Coolant Pump
Heat Exchanger with Overflow Pipe
Oil Cooler
Pressure Cap-Fill Cap
Thermostat & Water Bypass
Raw Water Inlet and Discharge
Zinc Electrode
V-92
I-53
OPERATION
The heat resulting from combustion in the engine cannot be
fully converted into kinetic ener gy. A major portion of that
heat is absorbed by the coolant from the c ylinder walls and
cylinder heads and must be carried away from the engine. It
is the function of the Heat Exchanger to transfer w
aste
engine heat to the raw cooling water.
Inside the heat e xchanger tank Fig.
1
is a heat e xchanger
core, somewhat similar to a miniature radiator
. Engine
coolant circulates around the heat exchanger core while cool
raw water, from a tap on the pressure side of the f ire pump,
is circulated inside the core carrying a way the heat. The in-
stalling contractor mak es the ra w water discharge connec-
tion at time of system installation.
Fig. 1 - Heat Exchanger Cooling System
I-71
V-71