Cummins Inc. announced the readiness of its on-highway engine product line to meet the US Environmental Protection Agency (EPA) and California Air Resources Board (CARB) emissions standards for 2007.
Cummins will continue to use its cooled Exhaust Gas Recirculation (EGR) technology with the addition of exhaust aftertreatment provided by the integrated Cummins Particulate Filter and a crankcase ventilation system.
(The EPA 2007 regulations eliminate an earlier exception for crankcase emission control for turbocharged heavy-duty diesel engines. Crankcase emissions from these engines are now included in the emissions load.)
This technology is consistent on all Cummins on-highway diesel engines for North America, including the Heavy-Duty ISX and ISM, as well as the MidRange ISL, ISC and ISB engines.
The entire line features fully integrated electronic controls, with a single ECM (Electronic Control Module) that controls the engine and aftertreatment. All engines will use the patented sliding-nozzle Variable Geometry Turbocharger (VG Turbo), which features an electric actuator for 2007 with faster response and improved precision in adjusting airflow to the engine.
The Cummins Particulate Filter includes a diesel oxidation catalyst (DOC) and a diesel particulate filter to reduce particulate matter by 90%. The DOC fully optimizes the regeneration capability of the particulate filter, a critical aspect for maintaining fuel economy comparable to current engines. The crankcase ventilation system features a Fleetguard coalescing filter, which captures and filters crankcase emissions, and returns oil directly to the sump.