Cummins receives EPA 10 certification for heavy-duty, midrange engines

The new EPA regulations, which took effect Jan. 1, are the most stringent emissions regulations in the world, with oxides of nitrogen (NOx) and particulate matter (PM) emissions levels of 0.2 grams and 0.01 grams per brake-horsepower-hour, respectively.

“Receiving the formal certificates is an important step in the process as we enter 2010 with customer-ready products,” says Jim Kelly, president, Engine Business, for Columbus, Ind.-based Cummins. “This confirms that customers can be confident in the technology choice we’ve made to meet the new, more stringent emissions standards.”

Cummins will utilize selective catalytic reduction (SCR) technology to meet the EPA 2010 near-zero emissions standards. Cummins says it committed to using SCR technology because of a step change in performance that provides a significant increase in efficiency and durability.

“Our decision to use SCR technology has given us the ability to provide customers with the most fuel-efficient engines for on-highway applications,” Kelly says. “We expect to see at least 5 percent fuel economy improvement for the ISX15 and up to 3 percent improvement for the midrange products.”

Cummins EPA 2010 engines will include an enhanced cooled exhaust gas recirculation (EGR) system and a single VGT Turbocharger. The ISX15, ISL9 and ISC8.3 feature the Cummins XPI fuel system, and the ISB6.7 features an improved high-pressure common rail (HPCR) fuel system. The new SCR catalyst is included along with the Cummins particulate filter, first introduced in 2007, in the Cummins aftertreatment system. Incorporating SCR technology also will require the use of diesel exhaust fluid (DEF) at an average rate of 2 percent of diesel fuel consumption. DEF currently is available at numerous retail locations throughout the United States and Canada, including all Cummins distributor locations.

With the introduction of the new EPA 2010 engines, Cummins says it maintains engine availability across a broad range of on-highway applications. The company says its heavy-duty ISX15 offers fuel economy leadership for the heavy-duty Class 8 truck market along with better performance and better reliability compared to today’s ISX. And the midrange ISB6.7, ISC8.3 and the ISL9 are designed for and available in a wide variety of applications, including the medium-duty truck, school bus, fire and emergency and recreational vehicle markets.

To best serve customers in the vocational and less-than-truckload markets, the Cummins ISX11.9 will be introduced later in 2010. The ISX11.9 is on target for limited production in mid-2010, with full production commencing in late summer of 2010. Cummins says it will submit necessary documentation for EPA 2010 certification for the ISX11.9 later this year, prior to introduction to the marketplace.