Cummins produces first Tier 4 Interim engines

  • 30-Sep-2010 04:17 EDT
T4 Interim production.jpg

Cummins QSB6.7 Tier 4 Interim/Stage IIIB engines on the production line.

Cummins Inc. claimed in a Sept. 21 announcement that it had achieved an industry milestone by commencing production and supply of the first EPA Tier 4 Interim and EU Stage IIIB certified engines and aftertreatment for early installation by off-highway equipment customers. The latest-generation QSB6.7 and QSL9 engines, certified with integrated Cummins Particulate Filter exhaust aftertreatment, are built at the Cummins Rocky Mount plant in North Carolina for customers in North America and East Asia, with the Darlington plant in the U.K. supplying European customers. Before finalization of the engine build specification for production release, the QSB6.7 and QSL9 underwent a series of field tests on commercial operations to validate performance and in-service reliability; the engines achieved up to 5% improved fuel efficiency and faster engine response, boosting machine productivity, according to Cummins. The new emissions regulations take effect Jan.1 for engines over 173 hp (129 kW). The QSB6.7 engine is certified to 300 hp (224 kW) and the QSL9 up to 400 hp (298 kW). The engine supplier says that technology already successfully used with its EPA 2007 on-highway engines helped to accelerate its Tier 4 Interim program.

HTML for Linking to Page
Page URL
Rate It
4.25 Avg. Rating

Read More Articles On

International Truck recently unveiled its all-new engine for the Class 8 market called the International A26, in addition to a new initiative called Project Alpha, which brought together a small team of powertrain engineers dedicated to a new perspective on engine development.
The Truflo SDS39 molded fan from Phillips & Temro Industries (Eden Prairie, MN) is a one-piece, fully molded fan for engines in the off-road and power generation markets.
The engine maker used the ConExpo 2017 stage to announce its intention to produce a dual-fuel capable (natural gas and propane) off-highway engine by mid-2018, leveraging its already-in-production on-highway CNG truck engine.
OMEGA Engineering offers a new series of low-cost, compact pressure transducers with an all stainless-steel body and rugged construction.

Related Items

Training / Education