SERIES 40 ENGINE SYSTEMS
SERIES 40 ENGINE SYSTEMS
Fuel System
The fuel system consists of
the fuel pump, hydraulically
activated/electronically controlled
unit injector assemblies, fuel pipes,
fuel strainer and
fi
lter, and fuel lines.
Lubrication System
The lubrication system consists of the
oil pump, oil cooler, oil strainer and
fi
lter, bypass and pressure regulator
valves, oil temperature control valve,
and lubricating oil lines.
Cooling System
The cooling system consists of
a centrifugal-type fresh water
pump, full-blocking thermostat,
charge air cooler, radiator, and
thermo-modulated fan. The fresh
water pump circulates coolant within
the engine and through the oil cooler,
radiator and air-to-air charge cooler.
The thermostat installed in a recess
in the left-front corner of the cylinder
head controls the
fl
ow of coolant,
while the thermo-modulated fan
controls the
fl
ow of air through the
radiator and charge cooler.
Electrical System
The electrical system consists of
the starting motor, starting switch,
battery-charging alternator, storage
batteries and necessary wiring.
Air Induction System
The air induction system consists of
the air cleaner, air-to-air charge cooler
(some applications), compressor side
of the turbocharger, valve cover/intake
manifold and intake valves. Outside
air is drawn through the air cleaner
and into the turbocharger where it is
compressed. It then
fl
ows through the
air-to-air charge cooler, into the intake
manifold and into the cylinders where
it mixes with atomized fuel from the
injector nozzles.
Exhaust System
The exhaust system consists of the
exhaust valves, exhaust manifold,
turbine side of the turbocharger,
exhaust piping and muf
fl
er. Hot
exhaust gases
fl
owing from the
exhaust manifold into the exhaust riser
drive the turbocharger. Exhaust gases
then pass through the muf
fl
er and out
to atmosphere.
36
All information subject to change without notice.
(Rev. May 2004)
DDC-SVC-MAN-0057 0305
Copyright © 2003 DETROIT DIESEL CORPORATION