One-piece piston
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
N/A
Issued Date -
Oct 4, 2001
app pub date -
Mar 23, 2001
filing date -
Mar 28, 2000
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A one-piece piston comprises a piston crown made of steel and a bottom component made of forged steel, and a cooling channel that is formed by welding the crown and the bottom component of the piston together. The cooling channel is located radially behind the annular grooves. The crown and the bottom component of the piston jointly form a central cooling chamber whose lower limiting wall is forged as one piece with the bottom component of the piston. The welding seams joining the crown and the bottom component of the piston are friction welding seams. The piston provides for superior cooling of the crown of the piston and simplifies the production of the welding seams.
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