DCE80-100E
Technical Handbook
Engine Cummins QSB 5.9
Description
37
P.Group 30
TDCE01
04GB
Overview
The Cummins QSB 5.9 engine is a 6-cylinder, inline, 4-stroke,
low emission diesel engine with overhead valves. It has an Elec-
tronic Controlled Fuel system.
The engine is turbocharged, i.e. combustion air is supplied under
pressure. As a result, the quantity of fuel injected can be in-
creased, which increases the engine output. The turbocharger is
driven by the exhaust gases and uses energy that would other-
wise be lost.
In order to further increase the engine efficiency, the engine is
equipped with a water-to air intercooler.
The engine is pressure-lubricated by an oil pump which delivers
oil to all lubrication points. A full-flow oil filter effectively cleans the
lubricating oil. An integrated, oil cooler is cooling the entire oil
flow.
The fuel system is protected against impurities by replaceable fil-
ters.
To maintain a controlled working temperature in cylinders and
combustion chambers, the engine is provided with piston cooling.
The low emission engine satisfies future emission requirements
from both the USA (California) and Europe. The new engines
represent a considerable improvement, not only in terms of ex-
haust gas emissions, but also in terms of power and torque
curves.
In addition, all engines comply with the R24 exhaust smoke re-
quirements.
IMPORTANT! For details in the different systems, see
Cummins Operation and Maintenance Manual
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