We’re not se­lected for se­lec­tive yet

Cum­mins en­gines will re­main es­sen­tially un­changed un­til at least 2014, writesGRAHAMSMITH

Herald Sun - Motoring - - News -

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.

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