Engine Systems
Engine Systems
The following sections will be covered in this chapter:
• Aftertreatment System
- Diesel Exhaust Fluid Information
• Air System
• Cooling System
• Electrical System
• Engine Brake System
• Exhaust System and Exhaust Gas Recirculation (EGR) System
• Fuel System
• Lubrication System
- Engine Oil Capacities
Aftertreatment System
Aftertreatment Systems
Detroit™ Gen 5 Heavy Duty engines are equipped with the second generation of
the Global Aftertreatment System (GATS 2.0). The function of the Aftertreatment
System (ATS) is to reduce emisson levels in the engine exhaust. Mounted onto the
ATS are eight sensors, a Diesel Exhaust Fluid (DEF) doser, and an Aftertreatment
Control Module (ACM). The sensors monitor various temperatures, pressures and
levels within the ATS. The DEF doser measures DEF pressure and injects DEF into
the ATS when needed. The ACM controls the functions and analyzes the data of the
ATS electronic components by means of the ATS wiring harness. For information
on performing a parked DPF regeneration, Refer to section "How to Perform a
Parked Regeneration".
Proper maintenance of the ATS 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".
Engine Systems
40 All information subject to change without notice.
Copyright © 2020 DETROIT DIESEL CORPORATION DDC-SVC-MAN-0217
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