Cummins commits to EGR, shelves SCR until 2014

Cummins will continue to use EGR technology on its engines, shelving SCR until at least 2014

As truck manufacturers refine chassis designs in preparation for the introduction of the even stricter ADR80/03 exhaust emission regulations in 2011, Cummins says it will continue to use the exhaust gas recirculation (EGR) technology.

Sean McLean, Heavy-Duty Product Manager for Cummins South Pacific, says EGR will remain as the company’s "core emissions reduction technology".
"The use of cooled EGR is a successful, consistent approach for our customers," he says.

"It means that today’s ISM, ISX and Signature engines will continue unchanged in Australia and New Zealand through to at least 2014."

In line with the tougher standards, Cummins is introducing a ‘Cummins Particulate Filter’ in the exhaust system, to trap soot and other particulate before it is released into the atmosphere.

Designed to last the life of the vehicle, the Cummins Particulate Filter comprises both a diesel oxidation catalyst and particulate filter. Additionally, a simple crankcase filter will be fitted on the ISM, ISX and Signature and will require changing every third or fourth oil change.

The ISX engine to be introduced in North America in 2010, which uses a combination of EGR and the alternative selective catalytic reduction (SCR), as well as the new XPI extra-high-pressure common rail fuel system, will not be required in Australia until at least 2014.

"By the time we come to use that engine, it will have been in service in North America for four years and we will have carried out our own extensive testing to ensure reliability and durability," McLean says.

Despite ruling out the use of SCR on its heavy duty engines, Cummins will continue to use the technology on its medium duty engines, including the 6.7-litre ISBe and 8.9-litre ISLe currently offered in DAF and Kenworth models.