Exhaust System and Exhaust Gas Recirculation System
The Detroit™ Gen 5 Heavy Duty engine exhaust can be divided into two major
systems, the exhaust system and the Exhaust Gas Recirculation (EGR) system. The
exhaust system consists of a turbocharger, heat shields, an exhaust manifold, and its
associated parts. Hot exhaust gas from the exhaust manifold is used to drive the
turbocharger. For a listing of required exhaust system service intervals, Refer to
section "Preventive Maintenance Tables".
The EGR system consists of an EGR valve and actuator, EGR hot pipe, EGR
venturi, EGR cooler, and its associated parts. The purpose of the EGR System is to
reduce engine exhaust gas emissions in accordance with EPA regulations.
The EGR actuator opens and closes the EGR valve to allow hot exhaust gas to enter
the EGR cooler. The EGR system dramatically reduces cuts NOx formation by
routing a measured amount of cooled exhaust gases into the cylinders to lower
combustion temperatures. Lower temperatures result in lower NOx levels.
Fuel System
Fuel System
The Detroit™ Gen 5 Heavy Duty fuel system is an Amplified Common Rail
System (ACRS). The fuel system consists of fuel injectors, high pressure fuel rail,
low and high pressure fuel pumps, fuel filter module, prefilter, final filter, low
pressure fuel sensor, supply fuel temperature sensor, fuel rail pressure sensor, water
in fuel sensor, and the necessary connecting fuel lines.
Detroit™ Gen 5 Heavy Duty engines are designed to operate on Ultra-Low Sulfur
Diesel (ULSD) fuel. Always use ULSD fuel and fuel filters that meet Detroit™
specifications. The use of fuels and/or fuel filters that do not meet Detroit™
specifications may result in premature wear or engine failure, Refer to section
"How to Select Fuel".
Proper maintenance of the fuel system is essential to ensure the engine continues to
comply with applicable emissions standards. For a listing of required service
intervals, Refer to section "Preventive Maintenance Tables".
Lubrication System
Lubrication System
The lubrication system of a Detroit™ Gen 5 Heavy Duty engine consists of an oil
coolant module, oil filter, oil cooler, oil pan, oil pump, oil suction manifold, oil
pressure regulator valve, oil thermostat, and oil pressure sensor. Clean, pressurized
oil is fed to all components via passages in the engine block and cylinder head.
Gen 5 DD Platform Operators Manual
All information subject to change without notice.
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DDC-SVC-MAN-0217
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