Cummins develops independent system for B3.3 engine

Cummins, Inc. (CMI) announced that the mechanical B3.3 engine will meet U.S. Tier 4 Final emissions standards in 2013. The company will use a particulate filter aftertreatment system that was developed specifically for use in compact equipment rated below 75 hp (56 kW). The new exhaust aftertreatment operates as an independent system designed to achieve near-zero particulate matter (PM) emissions. This will enable the B3.3 to move up to Tier 4 Final without changes to the engine. The B3.3 will maintain the same class-leading performance and reliability with a particulate filter-only solution for Tier 4 Final. Cummins Emission Solutions developed the particulate filter to meet the U.S. Environmental Protection Agency (EPA) Tier4 Final and equivalent emissions standards in Europe and Japan for engines below 75 hp (56 kW), which will take effect on January 1, 2013. The after treatment system was designed for excavators, aerial lifts, forklifts, gensets, skid steer loaders and other compact equipment.
Unique Tier 4 solution
According to Chris Calas, Cummins 3.3-Liter product manager, this up-tier solution for the B3.3 to meet Tier 4 Final is unique in the industry. “Our Tier 4 Final approach is intended to minimize equipment redesign and maintain our extremely reliable B3.3 with the benefit of mechanical simplicity. Customer demand for the 3.3-liter continues to grow significantly, and now we will move the capability of the B3.3 even further ahead of other similar 4-cylinder engines for Tier 4 Final,” Calas said. B3.3 manufacturing in Japan will be complemented by new production in Chennai, India. The new plant will also provide the major build capacity increase needed to meet the growing demand from compact equipment manufacturers. (August 5, 2011)