This is out of a diesel engine but I've never seen a gap between the rings and the skirt of a piston. Does this only work in low RPM motors?
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Has anyone seen a piston like this?
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It's for high cylinder pressure (turbo or supercharged) engines. This separates the crown load/deformation from the skirt sideload / deformation, and also reduces piston mass.
I'm not a diesel guy, but I've seen pictures of these in highly boosted race engines .
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That is a steel piston. Those have been around for about 20 years. It's designed to be as light as a aluminum piston. And no they are not meant for only low RPM motors.
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Joined: 5/13/2015
Location: Utica, MI USA
Mahle refers to them as a Monotherm piston. Like stated above they are made of steel.
Guys have made over 2,000 hp with them in a Cummins application.
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