Cummins unveiled its next generation X15 at the Brisbane Truck Show to dispel any industry concerns over the engine architecture needed for Euro 6 emissions compliance.
The X15 continues to use SCR/AdBlue technology for Euro 6 along with the addition of Cummins’ new ‘Single Module’ aftertreatment system.
“The Euro 6 engine does not require a combination of EGR and SCR,” confirms Mike Fowler, Cummins South Pacific’s director of engine business.
He points out that while Australia’s next round of on-highway emissions regulations may still be several years away, Cummins, as diesel technology leader, is unveiling its next generation X15 in Australia to instill market confidence in its future product.
“We are giving our customers confidence that the X15 they have now will be very similar to the X15 they will have for Euro 6,” he says.
“Our EGR-free Euro 6 platform is the right technology in that it builds on the attributes of our Euro 5 X15 engine while continuing to emphasise simplicity – the critical ingredient in the recipe for reliability and durability, the foremost requirement of our customers.
“In fact, the X15 Euro 6 differs very little in architecture to our Euro 5 engine,” he adds. “For example, a simple wastegate turbocharger is used along with Cummins’ well-proven XPI common rail fuel system.
“Significantly, there will be fuel economy gains with the X15 Euro 6 due to optimised ratings and further improvements to powertrain integration including the use of new predictive technologies.”
He points out that additional efficiencies have been gained throughout the Euro 6 engine by minimising friction losses in the gear train, lube system and power cylinder.
Exhaust aftertreatment for the X15 Euro 6 features Cummins’ new ‘Single Module’ technology – a one-piece design that integrates both the SCR system and diesel particulate filter (DPF) and is up to 40% lighter and 60% smaller compared with existing multi-module systems.

The smaller size enables better heat management and retention for improved fuel economy capability, while the simple single-pass exhaust flow design delivers low back pressure. The single module design also results in a more robust and reliable aftertreatment system.
While peak outputs for the X15 Euro 6 have yet to be confirmed, Fowler reveals there will be a broad range of ratings. A specific set of ratings will be for matching with automated transmissions to enable engine downspeeding for fuel economy optimisation, while another set of ratings will be for higher GCM applications or manual transmissions where performance is critical.
While an implementation date for Euro 6 in Australia is yet to be confirmed, Fowler says Cummins will be prepared well in advance. “An extensive field test program for our Euro 6 product will begin later this year,” he confirms. “We will have a significant number of trucks involved in the program in a variety of duty cycles, from single trailer to roadtrain.”

About Cummins Inc.

Cummins Inc., a global power leader, is a corporation of complementary business units that design, manufacture, distribute and service diesel and natural gas engines and related technologies, including fuel systems, controls, air handling, filtration, emissions solutions and electrical power generation systems. Headquartered in Columbus, Indiana (USA), Cummins currently employs approximately 55,400 people worldwide, and serves customers in approximately 190 countries and territories through a network of approximately 600 company-owned and independent distributor locations and more than 7,400 dealer locations. Cummins earned US$1.39 billion on sales of US$17.5 billion in 2016. Press releases can be found on the Web at or

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