Cummins Inc. claims its one-highway engine product line is ready to meet the U.S. Environmental Protection Agency (EPA) and California Air Resources Board (CARB) emissions standards for 2007.

Cummins made its announcement during the American Trucking Associations Annual Leadership Meeting in Tampa, Fla.
The company’s product line for 2007 features what it calls a highly successful emissions reduction approach. The engine line will be certified and compliant for 2007 with only incremental improvements. Cummins will continue to use its proven cooled Exhaust Gas Recirculation (EGR) technology with the addition of exhaust aftertreatment provided by the integrated Cummins Particulate Filter and a crankcase ventilation system. 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.
According to Ed Pence, Cummins vice president and general manager of Heavy-Duty Engine Business, "With more than 300,000 cooled-EGR engines on the road, and over 30 billion miles of experience, we are confident in the customer advantages provided by our 2007 engines and emissions solution. Cummins is the only company with the key in-house technologies that enable the engine, air handling and aftertreatment system to be totally integrated for optimal reliability, durability, fuel efficiency and low cost of ownership."
Pence added, "Our 2007 field testing is well ahead of schedule. Field tests have been jointly conducted with OEMs and end customers, so we are able to validate performance of the entire system in real-world conditions and duty cycles. Under all conditions, performance has been impressive."
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 percent. The DOC fully optimizes the regeneration capability of the particulate filter, a critical aspect for maintaining fuel economy comparable to today's engines. The crankcase ventilation system features the Fleetguard Enviroguard coalescing filter, which captures and filters crankcase emissions, and returns oil directly to the sump.
Cummins readiness for 2007 also includes its distribution system for the entire on-highway engine product line. Training and preparation for the Cummins authorized OEM dealer network is well under way.