Magnum Monosteel piston
Federal-Mogul has designed the new Magnum Monosteel Piston in an attempt to offer improved fuel economy and reduced emissions for heavy duty vehicles.
The piston is currently in development, testing with global commercial vehicle and engine manufacturers in Europe and North America. Like the original Monosteel piston, the Magnum is said to address the increasing thermal, mechanical, abrasion and corrosion challenges placed on heavy duty diesel engines resulting from stringent emissions regulations. both pistons have patented dual friction welded construction. According to Federal-Mogul, this allows large cooling galleries for superior high temperature resistance and provides the strength to withstand the highest cylinder pressures found in modern commercial vehicle engines.
The new Magnum has a 'double band' piston skirt design, a first for modern diesel pistons according to Federal-Mogul. The company says that the double band skirt helps to reduce frictional drag and reduces the overall piston skirt area by 40%, making the design feature the primary contributor to the Magnum's overall friction and mass reduction. Extensive engine testing is said to have shown piston friction reduction of up to 17% compared to conventional steel piston designs.
The Magnum's double band skirt has been designed to enable better hydrodynamic lubrication compared to conventional piston skirt designs. The improved lubrication aims to allow greater piston stability as well as optimal ring pack performance and durability.
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