Navistar launches new 12.4-liter engine for on-highway applications

Navistar launched its new 12.4-liter engine, the International A26, at TMC Monday.Navistar launched its new 12.4-liter engine, the International A26, at TMC Monday.

Navistar this week unveiled a new 12.4-liter engine, the International A26,  which will replace the company’s N13 13-liter engine offering. The announcement came at the American Trucking Associations’ Technology and Maintenance Council annual meeting in Nashville on Monday.

“This engine is as simple as a modern diesel engine can be,” says Joao Silva, A26’s chief engineer.

The engine will be available in Navistar’s on-highway long-haul LT tractor series.

Lee Chan, Navistar’s chief engineer for controls and software, says the team took a “clean slate approach,” on the inline six cylinder engine, adding, “the collaborative one-team approach, I think, was critical for this product.”

At 2,299 pounds, the A26 is the lightest engine in its class and is 55 pounds lighter than the N13 engine it will replace in International’s order book at the end of the year. Built from the MAN D26 engine crankcase, the engine outputs up to 475 HP and 1750 lb.-ft. of torque.

The company also boasts a 5 percent boost to fuel economy when compared to the N13. International, testing an LT Series truck spec’d with the A26, became the first OEM to exceed 8 mpg on a hilly test route in Kentucky.

More on Navistar’s new engine can be seen on Overdrive sister site CCJ‘s coverage of TMC.

Full TMC coverage can be seen on CCJ here. More news from day two of the conference includes:

Kenworth is adding the Dana Spicer D-Series lightweight steer axles as options for T680 and T880 trucks.Kenworth is adding the Dana Spicer D-Series lightweight steer axles as options for T680 and T880 trucks.

Kenworth adds lightweight Dana Spicer D-Series steer axles as T680, T880 option

Kenworth is making Dana Spicer D-Series lightweight steer axles for use with air disc brakes available on its T680 and T880 model trucks with gross axle weight ratings from 10,000 to 13,200 pounds.

The D-Series axles feature a new lightweight beam with a robust axle-to-brake attachment to help maximizes performance. A patented steer arm design further reduces weight, delivering excellent performance within a smaller design envelope.

Cummins launches new oil analysis program

Cummins OilGuard, first mentioned at the launch of the company’s new X15 heavy-duty engine last summer, is now available.

The engine oil analysis program is offered free of charge for customers that sign up and receive oil sample kits to send back to Cummins’ laboratory for analysis. Cummins personnel analyze the oil and make recommendations on oil drain intervals, which Cummins says can be up to 80,000 miles depending on the application.

Cummins also announced a partnership with Valvoline for the Valvoline Premium Blue program that allows oil drain intervals up to 60,000 miles for X15 engines, 10,000 miles more than other API CK-4 oils.

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