Up and Cum­mins

En­gine maker adds a green choice to its range as emis­sion stan­dards tighten

The Courier-Mail - Motoring - - BIG WHEELS -

stick with ISX and Sig­na­ture en­gines run­ning ex­haust gas re­cir­cu­la­tion but not SCR can rest as­sured: Cum­mins will con­tinue to of­fer EGR-only ver­sions well into the fu­ture.

SCR sys­tems fea­ture a spe­cial cat­a­lyst that re­duces the amount of ni­trous ox­ide in the ex­haust us­ing a chem­i­cal re­ac­tion that oc­curs when a urea-based ex­haust treat­ment AdBlue, is added. Run­ning AdBlue means the op­er­a­tor has to pay for AdBlue fluid, AdBlue is not avail­able ev­ery­where and chas­sis space can be taken up by AdBlue tanks.

Cum­mins will have the new SCR ISXe5 en­gine along­side its ex­ist­ing EGR-only models to give op­er­a­tors bet­ter choice.

‘‘ The ISXe5 is join­ing our 15.0-litre prod­uct line to pro­vide a fur­ther tech­nol­ogy choice,’’ says Cum­mins South Pa­cific au­to­mo­tive gen­eral man­ager Sean McLean.

‘‘ We will con­tinue to see strong de­mand for our ISX and Sig­na­ture EGR en­gines, based on feed­back we have re­ceived from cus­tomers.’’

The ISXe5 uses the same base en­gine as the reg­u­lar ISX but features SCR, a high­pres­sure com­mon rail fuel in­jec­tion sys­tem (with in­jec­tion pres­sures of more than 30,000psi), sin­gle over­head camshaft and waste­gate tur­bocharger. The new en­gines’ out­puts are from 336kW (450hp) to 448kW (600hp).

Early adopters and those seek­ing a green im­age are likely to be the first to take up the SCR, but it will be fit­ted to al­most all heavy-duty en­gines in Aus­tralia within five years.

En­gine mak­ers are ex­pected to need SCR to meet the new emis­sions stan­dard, loosely based on Euro IV, due to be in­tro­duced in 2016 or 2017.

‘‘ By the time ADR80-04 is in­tro­duced we will have had ex­ten­sive ex­pe­ri­ence with th­ese tech­nolo­gies un­der Aus­tralian con­di­tions,’’ McLean says.

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