23 April 2003
The San Leandro, CA-based Cleaire Advanced Emission Controls announced that its Longview™ emissions control system—a combination of a lean NOx catalyst and a diesel particulate filter—has been verified by the California Air Resources Board (ARB). The system can be used in California diesel retrofit programs as a “Level 3” device, achieving at least 85% reduction in diesel particulate matter (PM) emission, and a simultaneous at least 25% reduction of nitrogen oxides (NOx) emissions. It is the first product verified by the ARB to simultaneously reduce the emissions of PM and NOx.
The Longview™ system has been verified for use on specific 1994 through 1997 model year Cummins M11 and Navistar DT466 diesel engines used in on-road applications and operating on ultra low sulfur diesel fuel (15 ppm S). All of these engines are four-stroke and were certified in California to the 0.1 g/bhp-hr PM emission standard when new.
Cleaire produced first Longview™ units in the fall of 2001. The system has been installed on approximately 60 vehicles in California, including vehicles owned by Caltrans, the AC Transit and County Connection bus fleets in Alameda and Contra Costa counties, and the Samtrans bus system in San Mateo County. It also is in use on dump trucks, refuse trucks and long-haul trucks.
Cleaire is a division of Cummins West, Inc., the Cummins engine distributor for Northern and Central California. Fleetguard Emission Solutions—a subsidiary of Cummins Inc.—is the exclusive North American distributor for the Longview™ system.