We’re not selected for selective yet
Cummins engines will remain essentially unchanged until at least 2014, writesGRAHAMSMITH
CUMMINS won’t add selective catalytic reduction to the heavy-duty engines it sells in Australia any time soon, despite its American parent introducing SCR to the same engines next year.
Some Australian operators have mistakenly assumed Cummins will follow the US lead and introduce SCR to the engines it will release here in 2010 when the next round of emission limits, ADR 80/03, comes into effect.
The engines Cummins will release for ADR 80/03 are the same engines already on sale in the US where they use exhaust-gas recirculation to comply with the similar US EPA 07 emission rules.
The engines with SCR meet the tougher US EPA 010 emission limits that haven’t even been set for introduction here yet.
Cummins spokesman Sean McLean says: ‘‘Cooled exhaustgas recirculation will remain our core emissions reduction technology. We will not be adding selective catalytic reduction to the ISM, ISX or Signature for ADR 80/03.
‘‘The use of cooled EGR is a successful, consistent approach for our customers. It means that today’s ISM, ISX and Signature engines will continue unchanged in Australia and New Zealand through to at least 2014.’’
There will be few changes to the current Cummins engines for ADR 80/03, McLean says, but they will include a particulate filter to the exhaust system.
The filter used acts as a diesel oxidation catalyst and particulate filter and is good for the life of the vehicle.
Cummins will also fit a crankcase filter to the engines. It will have to be changed every third or fourth oil change.
Though the engines sold locally will remain essentially unchanged until at least 2014, the ISX that will be marketed in the US from next year will be heavily revamped.
That engine will use a combination of EGR and SCR as well as a new XPI high-pressure common rail fuel system.
‘‘By the time we come to use that engine (in Australia), 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.
Cummins will be using SCR to meet the new ADR 80/03 emission limits on its mid-range ISBe and ISLe engines offered in DAFs and Kenworths in Australia.