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4 x 4 Australia - - Tech Torque -

FOR THE past 20 years Aus­tralian ve­hi­cle-emis­sions stan­dards have taken their lead from the United Na­tions Eco­nomic Com­mis­sion for Europe. The lat­est of these adopted here, the so-called Euro 5, came into ef­fect lo­cally for all new-de­sign ‘Light Petrol and Diesel’ ve­hi­cles in Novem­ber 2013 and for ex­ist­ing de­signs of the same ve­hi­cles from Novem­ber 2016. Light ve­hi­cles are any­thing less than 3.5 tonne GVM, so pretty much ev­ery­thing that’s a re­cre­ational 4x4. The main im­pact of Euro 5 over the previous Euro 4 standard was in the tight­en­ing up of the al­low­able soot (par­tic­u­late) emis­sion of diesels, a prob­lem ad­dressed via the in­tro­duc­tion of diesel par­tic­u­late fil­ters. Euro 6, al­ready in play in Europe and soon to be in­tro­duced here, calls for a re­duc­tion in the out­put of the var­i­ous ox­ides of ni­tro­gen, col­lec­tively known as NOX, and brings Se­lec­tive Cat­alytic Re­duc­tion (SCR) tech­nol­ogy, also known as Ad­blue. Some lo­cally de­liv­ered 4x4s, such as the Ford Ever­est, al­ready have SCR and meet Euro 6.

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