Light metal cylinder head for a valve-controlled internal combustion engine
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United States of America Patent
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Feb 28, 1984
Issued Date -
N/A
app pub date -
Jun 24, 1982
filing date -
Feb 9, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A light metal cylinder head, for a valve controlled internal combustion engine, which has at least one metal insert in that bottom region located between the valves, and has a bore in the combustion chamber bottom region for an injection nozzle or a shot or filling passage and/or an ignition aid. A crack or fissure hindering or precluding oxide layer is coated, covered, or applied at least to the bottom region located between the valves, including the bore region, and the metal insert is made of a material resistant with respect to the method of producing the oxide layer. The oxide layer comprises aluminum oxide and is applied by anodic oxidation. The metal insert may comprise titanium. The oxide layer may have a thickness of at least 50 .mu.m.
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