Cummins - Doing more with less

Executive Viewpoints-Vehicle Development Insights from Industry: Driving Factors for Future Innovation.

Cummins announced nearly three years ago that our 174-751 hp (130-560 kW) EPA Tier 4 Interim engines for 2011 will have an improved fuel efficiency of up to 5% and improved response while maintaining their durability. These products will meet the 90% PM and 45% NOx reductions using a common Tier 4 subsystem architecture with cooled exhaust gas recirculation (EGR) and Cummins Particulate Filter aftertreatment as the core technologies. All of these subsystems-as well as our high-pressure common rail fuel systems, advanced turbocharging, and electronic controls-are designed and developed by Cummins, providing a completely integrated system.

Cummins Tier 4 Interim technologies for 2011 leverage our on-highway experience of over 500,000 DPFs in the market and over 750,000 EGR systems in use today. These technologies were validated for the off-highway markets during their initial design over 10 years ago. To further enhance our ability to deliver the best products, Cummins has invested in more prototypes than for any other emissions change, with over 100 prototype Tier 4 engines installed for OEMs and other field tests.