Diesel Engine Fundamentals
center of the "V" between the two banks of cylinders. In larger or multi-camshafted V-
type engines, the camshafts are usually located in the heads.
The diesel engine's blower is part of the air intake system and serves to compress the
incoming fresh air for delivery to the cylinders for combustion. The location of the
blower is shown on Figure 2. The blower can be part of either a turbocharged or
supercharged air intake system. Additional information on these two types of blowers is
provided later in this module.
Diesel Engine Support Systems
A diesel engine requires five supporting systems in order to operate: cooling, lubrication, fuel
injection, air intake, and exhaust. Depending on the size, power, and application of the diesel,
these systems vary in size and complexity.
Figure 11 Diesel Engine Cooling System
Nearly all diesel
engines rely on a
system to transfer
waste heat out of
internals as shown
in Figure 11. The
consists of a closed
loop similar to that
of a car engine and
c o n t a i n s
t h e
pump, radiator or
water jacket (which
consists of coolant
block and heads),
and a thermostat.