50-58 Cummins Diesel 7/15/14 11:39 AM Page 58
Cummins ISX
Street Smarts In 2009, Cummins Inc. unveiled its on-highway engine lineup ready to meet the new Environmental Protection Agency (EPA) regulations for the North American market recently. Among the products introduced was the new Cummins ISX11.9 engine, a compact and lightweight medium-bore engine the company said was suitable for vocational trucks, day cabs, emergency vehicles and motor coach applications. Sharing common cooled EGR, VGT Turbocharger, XPI fuel system, electronic controls and aftertreatment system with the ISX15, the ISX11.9 was offered with ratings from 310425 HP (231-317 kW) and torque from 1,150 to 1,650 lb.ft. (1,559 – 2,237 N•m). The ISX11.9 was offered with an optional engine compression brake. All of Cummins 2010 on-highway MidRange and HeavyDuty engines are compatible with long-life coolants and biodiesel blends up to B20.
Cummins ISX CM871 model. Diesel Particulate Filter technology or DPF is a filtration system designed to trap particulate NOx matter created by the Cummins ISX engine. The second step of the system is the Diesel Oxidation Catalyst which further breaks down the particulate matter via oxidation of the ash. The ash of the diesel particulate is oftentimes called soot. Then again in 2010 the Cummins ISX engine made another upgrade to its emissions technology with the ISX 15 CM2250 model. The Cummins ISX 15 CM2250 features the improved Exhaust Gas Recirculation in addition to Selective Catalytic Reduction for diesel particulate All Blake’s remanufactured matter. exchange engines are dyno These new tested prior to shipping. guidelines further confined to EPA regulations also known as Urea Injection Reduction. The selective catalytic reduction system contains a diesel exhaust fluid composed of urea and water, controller, holding tank, pump, injector and the catalyst brick. The system works by heating up the diesel exhaust fluid which is then pumped and injected into a decomposition area which then chemically reacts with the diesel exhaust in the Selective Catalytic Reduction chamber to reduce the level of NOx. The Cummins ISX 15 uses one camshaft compared to previous versions which used two. This single camshaft design in the Cummins ISX engine is due to the introduction of the common rail fueling system in which diesel fuel is pressurized from already high pressure. The fuel is stored in multiple piston pumps and transferred through tubes to a rail where the diesel fuel is stored under extremely high pressures up to but not including 35,000 psi. For more information on the Cummins ISX engine or the Cummins QSX engine, contact Blake's Remanufacturing at www.blakesreman.com. For more on the 40 years of Blake’s Remanufacturing, check out the Rebuilder Profile article beginning on page 78. ■
Circle 78 for more information 58 July 2014 | EngineBuilder