CYLINDER HEAD WITH MULTIPLE OIL PASSAGES AND METHOD FOR MANUFACTURE
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United States of America Patent
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N/A
Issued Date -
Aug 14, 2008
app pub date -
Jan 25, 2008
filing date -
Feb 13, 2007
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A novel device and method is provided for incorporating oil passageways in existing cylinder head assemblies of an overhead cam type engine valve train. The system provided utilizes a longitudinal preformed metal tube which contains multiple separate longitudinal passageways. In the course of the assembly of the tube in the cylinder head, a temperature differential is employed, e.g., the tube is cooled such as by cryogenic means to reduce its outer diameter and/or the cylinder head is heated and the tube is inserted into a mating opening in the cylinder head to provide a permanent interference fit.
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