The Single Module™ is an ultra-high efficiency aftertreatment system. Previous aftertreatment systems were designed simply to meet emissions requirements. This system, however, was developed specifically to meet customer needs first, while also meeting emissions standards.
The Single Module™ is designed to be up to 60 percent smaller and 40 percent lighter than the proceeding EPA 2013 solution, all while improving emissions reduction performance. The small size enables better heat management and retention for improved fuel economy capability. The simple single-pass exhaust flow design delivers low back pressure. This simpler packaging allows for fewer variations. This offers OEM customers system integration benefits and a more robust and reliable system for the end-user.
Advanced Catalyst Technologies
Advancements in catalyst technologies have allowed the diesel particulate filter to have a bigger ash capacity, permitting for increased time between maintenance events and minimal operator intervention. Improvements in NOx reduction capabilities in the selective catalytic reduction system have been enabled by the use of the UL2 Liquid-Only Urea Dosing System.
Simple Chassis Integration
OEM customers will benefit from simpler chassis integration, as the UL2 system does not require engine coolant lines to and from the diesel exhaust fluid (DEF) injector. Operators will see more efficient atomization of urea and minimized urea deposits, thus requiring fewer regeneration events while experiencing the optimal use of DEF throughout the system.