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Truck Engines Incorporate Advanced Engineering to Meet Phase 1 Greenhouse-Gas Standards


Volvo Trucks North America

This story appears in the March 13 print edition of Equipment & Maintenance Update, a supplement to Transport Topics.

The diesel engines built this year are more efficient as the second step of greenhouse-gas Phase 1 standards takes effect. These power plants also offer improved reliability, advanced engineering, reduced maintenance and performance improvements that fleet managers and truck drivers will notice, industry experts said.

According to the Federal Register, diesels used in heavy-duty tractors will have to consume, in a particular duty cycle, 15 fewer grams per horsepower-hour of diesel fuel, a savings of 3.08%. The new engines incorporate many components that reduce friction. In addition, they feature longer oil-change intervals, in most cases made practical via the use of the new American Petroleum Institute PC-11 engine oils.

All of these engines are on the road today, having been extensively tested not only by the manufacturers but also in significant numbers in daily service in large and medium-size fleets during much of 2016, according to the engine makers.

BEST OF MARCH E&MU: More stories, columns

Tim Proctor, technical leader for heavy-duty products at Cummins Inc., described changes in the new version of its 15-liter platform, the X15. The X15s are in two families — the Efficiency Series, which provides 400 to 500 horsepower and up to 1,850 pound-feet of torque, and the Performance Series, which provides 485 to 605 hp with up to 2,050 pound-feet of torque. The Cummins-Eaton SmartAdvantage powertrain will use the Efficiency Series.

The engine maker prioritized reliability over fuel economy, said Clint Garrett, X15 product manager at Cummins Inc. “One day of downtime can wipe out a 2% reduction in annual fuel consumption,” he said.

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By John Baxter
Contributing Writer


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