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Cummins chips away at NOx.(oxides of nitrogen)(Brief Article)

Commercial Carrier Journal

| May 01, 2001 | COPYRIGHT 2001 Randall Publishing. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan.  All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)Copyright

Cummins Engine Co., Columbus, Ind., has launched a voluntary initiative to lower levels of oxides of nitrogen (NOx) emitted from its diesel engines.

New calibrations are available on 1996-1998 Cummins M11 Plus and N14 Plus engines. Customers can go to Cummins distributors or dealers to have the electronic calibrations uploaded--a process that takes a few minutes.

Meanwhile, Cummins continues its development work on cooled exhaust gas recirculation (EGR). The technology was successfully demonstrated on the next generation of the company's B Series engine, and is being applied to its other medium and heavy-duty engines.

Cummins claims to have: achieved a 2% improvement in fuel economy compared to its current product; reduced NOx by 50%; and reduced unaided cold starting time by 80%.

In addition, says Cummins, throttle response is significantly improved through the use of variable-geometry turbocharging.

The old water-in-the-fuel trick

Lubrizol Corp., Wickliffe, Ohio, has introduced PuriNOx, an "economical, lower-emission alternative to conventional fuel," which consists of diesel fuel, 10-20% purified water, and a proprietary Lubrizol additive package.

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