Engine Systems Exhaust System and Exhaust Gas Recirculation System 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 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. Fuel System 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 46 All information subject to change without notice. Copyright © 2022 DETROIT DIESEL CORPORATION DDC-SVC-MAN-0217