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New 12-litre Cummins Euro VI engine launched

Amid the excitement about the Euro-VI version of the Cummins X15 engine, the launch of new, slightly smaller engine launch has almost gone unnoticed.

The next-generation X12 also made its debut at the Brisbane Truck Show, and it also uses SCR/AdBlue technology to achieve Euro VI compliance.

The Euro-V version of the 12-litre unit has been on test in Australia since early 2015, rated at 500hp and 1,700 ft lb of torque – making for the highest power-to-weight ratio of any engine in the 10–16-litre class, according to Cummins.

The new generation weighs in at just over 900kg, achieved through a sculpted block design and the use of high-strength composite materials, and is already being tested in the field.

“The results of the field test have exceeded all expectations,” said Mike Fowler, Director of Engine Business ay Cummins South Pacific. “As industry and government shift their focus to energy productivity, the X12 hits the target.”

Fowler said the new unit incorporates Cummins’ XPI common rail fuel system, with injection pressures in excess of 30,000psi, for “improved combustion and fuel economy, reduced noise and fast response at low rpm”. A standard wastegate turbocharger is also used.

As an after-treatment solution Cummins opted for a high performance ‘Compact Box’ that integrates the SCR system and diesel particulate filter (DPF) and is said to be “considerably smaller” than the most compact Euro VI systems already on the market.

Optimised catalysts and advanced urea dosing achieve higher NOx conversion rates and further improve fuel efficiency.

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