MULTI-PART PISTON CONSTRUCTION FOR AN OPPOSED-PISTON ENGINE
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United States of America
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Jan 16, 2020
app pub date -
Aug 29, 2019
filing date -
Aug 29, 2019
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Abstract
A piston for an internal combustion opposed-piston engine includes a crown part, a skirt part, and an outer part. The crown part includes a first ring belt region for supporting compression rings and an end surface shaped to form a combustion chamber with an end surface of an opposing piston. The skirt part includes a sidewall and a wristpin bore with a first opening and a second opening formed in the sidewall. The outer part includes a second ring belt region for supporting oil control rings. The crown part is joined to an upper end of the sidewall with one or more welding seams. The outer part is joined to a lower end of the sidewall with a welding seam.
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