Piston said to up mpg and cut emissions

The next generation of the Federal-Mogul Monosteel piston can improve fuel economy and lower emissions, the company said. The Magnum Monosteel boasts a design that reduces piston mass by up to 7% and reduces friction for improved fuel economy.

Like the original Monosteel piston, the Magnum addresses the increasing thermal, mechanical, abrasion and corrosion challenges placed on heavy-duty diesel engines resulting from stringent emissions regulations, said Federal-Mogul.

The Magnum includes patented dual friction-welded construction to enable large cooling galleries for high-temperature resistance. It also includes a double-band piston skirt design, a first for modern diesel pistons, Federal-Mogul said. The double-band skirt helps to reduce frictional drag and reduces the overall piston skirt area by 40% to reduce the overall friction and mass.

The double-band skirt also offers improved hydrodynamic lubrication for greater piston stability as well as optimal ring pack performance and durability, the company noted.

“With the Magnum piston, Federal-Mogul is again bringing a significant piston architecture innovation to the heavy-duty market through an enhancement to our proven Monosteel design,” said Rainer Jueckstock, Federal-Mogul senior vp of Powertrain Energy.