Piston including a composite layer applied to metal substrate

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United States of America Patent

PATENT NO 11850773
APP PUB NO 20230088665A1
SERIAL NO

17994687

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Abstract

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A piston for a heavy duty diesel engine including a composite layer forming at least a portion of a combustion surface is provided. The composite layer has a thickness greater than 500 microns and includes a mixture of components typically used to form brake pads, such as a thermoset resin, an insulating component, strengthening fibers, and an impact toughening additive. According to one example, the thermoset resin is a phenolic resin, the insulating component is a ceramic, the strengthening fibers are graphite, and the impact toughening additive is an aramid pulp of fibrillated chopped synthetic fibers. The composite layer also has a thermal conductivity of 0.8 to 5 W/m·K. The body portion of the piston can include an undercut scroll thread to improve mechanical locking of the composite layer. The piston can also include a ceramic insert between the body portion and the composite layer.

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Patent Owner(s)

Patent OwnerAddress
TENNECO INCLAKE FOREST IL 60045

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Evers, Ross Allen Tecumseh, US 3 6
Lineton, Warran Boyd Chelsea, US 35 174
Salenbien, Greg Britton, US 12 37

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