Real Solutions for Emissions Control
Reducing emissions from diesel engines is one of the most important air quality challenges facing the United States – and the world. Even with more stringent heavy-duty highway engine standards set to take effect over the next decade, millions of diesel engines already in use will continue to emit large amounts of nitrogen oxides and particulate matter, both of which contribute to serious public health problems. According to the Environmental Protection Agency, these problems are manifested by thousands of instances of premature mortality, hundreds of thousands of asthma attacks, millions of lost work days, and numerous other health impacts.

All Cummins California engines have met the U.S. EPA 2007 regulation of Particulate Matter (PM) with an oxidation catalyst. The ISL G engine is certified to U.S. EPA 2010 emissions levels (0.2g/bhp-hr NOx).

Exhaust Gas Recirculation
In 2002, Cummins began using Exhaust Gas Recirculation (EGR) and our patented Variable Geometry Turbocharger (VG Turbo) to help reduce emissions, and comply with the stringent California Air Resource Board’s (CARB) emission standards. By re-routing some of the exhaust gases and introducing it back into the intake system, combustion temperatures can be reduced, along with smog and ozone producing NOx emissions.

Aftertreatment Devices
Exhaust aftertreatment devices such as Diesel Oxidation Catalyst and Diesel Particulate Filters can reduce harmful engine exhaust emissions. Depending on the type and CARB Verified Level of each device, Cummins California can provide proven, cost effective technology that will eliminate most emissions.

Engine Repower Options
An effective way to reduce the emissions from existing off-highway equipment or on-highway vehicles is to replace the engine with a newer, cleaner one. Cummins offers several options to repower trucks, boats and other equipment.

• ReCon engines are a proven, reliable and cost effective way to extend the life of equipment, while meeting or beating its original emissions requirements.
• New engine repowers ensure that the equipment’s emissions are the cleanest possible for its class, and it’s a reliable, warranted engine guaranteed to meet the current emissions standards.
• Alternative fuel engine repower is another great way to reduce emissions, and keep your fuel costs in check. Cummins offers engines that operate on Compressed Natural Gas (CNG), Liquid Natural Gas (LNG), and Liquefied Petroleum Gas (LPG).