Federal-Mogul touts redesigned piston

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Updated Oct 19, 2010

Federal-Mogul announced that it has developed the next generation of the Monosteel piston, called Magnum Monosteel. The new design is said to reduce piston mass by up to 7 percent and includes design features that reduce friction for improved fuel economy and lower emissions. The piston is in development testing with major global commercial vehicle and engine manufacturers in North America and Europe.

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. It has patented dual friction-welded construction, which enables large cooling galleries for superior high temperature resistance and strength to withstand the highest cylinder pressures found in modern commercial vehicle engines, the company says.

The new Magnum Monosteel also features a “double-band” piston skirt design that is said to help reduce frictional drag and reduce the overall piston skirt area by 40 percent. The Magnum’s double-band skirt also is said to enable improved hydrodynamic lubrication that allows for greater piston stability as well as optimal ring pack performance and durability.