Cummins debuts 2010 on-highway engines
equipment 30 Commercial Carrier Journal April 2009 C ummins Inc. last month introduced its on-highway engine product line that will comply with the U.S. Environmental Protection Agency's 2010 emissions regu-lations. Included in the lineup is a new engine model the Cummins ISX11.9. As it announced in August 2008, Cummins has shifted gears and now will rely on selective catalytic reduction (SCR) on all its on-highway engines as an aftertreatment to neutralize NOx in the exhaust. Previously, Cummins had planned to use SCR only in its medium-duty product and intended to rely solely on enhanced exhaust gas recircula-tion (EGR) to deal with NOx in its heavy-duty product. At the top of the lineup is the Cummins ISX15, which the engine maker says will offer Cummins debuts 2010 on-highway engines Lineup includes a new model the ISX11.9 The new ISX11.9, which initially will be available only in Kenworth and Peterbilt trucks, will be offered with ratings from 310 to 425 hp and torque from 1,150 to 1,650 lb-ft. Cummins unit to offer DEF by October Peterbilt introduced an aerodynamic package for its on-highway Models 386 and 384 designed to improve fuel economy by up to an estimated 12 percent. Changes include roof fairing and trim tabs, new sleeper roof transition, enhanced chassis fairings, an aero battery box/toolbox, composite sun visor, sleeper extender and aerodynamic mirrors. The company also introduced a proprietary fuel efficiency package designed to provide fuel savings gains of up to 12 percent for its traditionally styled Models 388 and 389. C ummins Filtration said last month that it would offer Fleetguard diesel exhaust fluid (DEF) at all Cummins distributor locations by Oct. 1 of this year. DEF a solution based on urea is necessary for operation of the selective catalytic reduction aftertreatment system. As of Oct. 1, all 20 Cummins distributors at more than 187 locations throughout North America will offer DEF. The prod-uct also will be available through the Cummins Filtration net-work, which includes more than 20,000 locations with nearly 8,000 retailers in North America. The Fleetguard DEF product will be available in several packaging options, including bulk, 330-gallon plastic totes, 275-gallon disposable totes and 55-gallon plastic drums. Smaller packaging sizes and dispensing equipment are expected to be available by mid-2009. improved performance and fuel economy up to 5 percent better than today's ISX engine. Key features of the ISX15 include the Cummins XPI high-pressure common-rail fuel system, an enhanced cooled-EGR system, a single VGT Turbocharger and the Cummins Aftertreatment System that uses SCR and the diesel particulate filter introduced as part of the 2007 emissions change. Cummins will maintain ISX15 ratings from 400 to 600 hp, with torque outputs from 1,450 to 2,050 lb-ft. The engine initially will be available in Volvo, Kenworth and Peterbilt products, as well as the Freightliner Cascadia, said Lori Thompson, executive director of the Cummins OEM business. Without naming Navistar, Jim Kelly, president of the Cummins Engine Business, acknowledged that one truck maker has elected not to offer an engine option that relies on SCR. He suggested, however, that Cummins never gives up on convincing the customer that it has the best product and that the truck makes Thompson listed are only those for which commitments exist today. We don't do anything if people don't sell our engines [in their trucks], Kelly said. The new ISX11.9 which is aimed at vocational, day cab, regional and less-than-truckload linehaul applications, among others shares numerous common components with the ISX15, including cooled EGR, VGT turbocharger, XPI fuel system, electronic controls and the aftertreatment system. The ISX11.9, which initially will be available only in Kenworth and Peterbilt trucks, will be offered with ratings from 310 to 425 hp and torque from 1,150 to 1,650 lb-ft. One of the advantages of the 2010 lineup is improved fuel economy even when drivers aren't as skilled or focused on driving for fuel efficiency, said Steve Charlton, vice pres-ident of heavy-duty engineering. Our heavy-duty engines for 2010 have a large `sweet spot' due to the low-temper-ature NOx conversion capability of the copper-zeolite catalyst, which means that these engines are extraordinarily driver-friendly. So even an inexperienced driver should see improved fuel economy and better performance over the 2007-technology product, Charlton said. In addition to the ISX15 and ISX11.9, Cummins announced its mid-range engine line for 2010, which is nearly identical to their 2007 counterparts aside from the addition of SCR. Those include the ISB6.7, ISC8.3 and ISL9 engines. Avery Vise Peterbilt enhances 386, 384 aerodynamics