Ceramic valve guide and seat

Patent · Tue Aug 25 00:00:00 EDT 1987

OSTI ID:6096498

Mott, D H; Schmidt, H

For molded inclusion in a cast metal cylinder head of a internal combustion engine, an integral ceramic valve seat and valve stem guide assembly are described for operative engagement with and support of a conventional poppet-type valve with its enlarged head portion with a sealing surface thereon and an elongated cylindrical stem portion. The guide and seat consist of: valve seat forming means cast in ceramic material having an annular configuration operatively conforming to the configuration of the sealing surface of the valve and defining an annular seating surface for sealing engagement with the enlarged valve head when the valve is in a closed position; valve stem support means cast in ceramic having a generally tubular configuration with an internal bore and defining a support for reciprocation of the cylindrical stem portion of the valve as the valve moves between open and closed operative position; connecting means cast in ceramic and integral with both the valve set forming means and the valve stem supporting guide means for aligning the means so that a plane through the annular seating surface is normal to the axis of the tubular guide means and coaxially supporting the annular valve set forming means and the tubular guide portion whereas the integral valve seat forming means.

• Assignee: Chrysler Motors Corp., Highland Park, MI
• Patent Number(s): US 4688527
• OSTI ID: 6096498
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
ALIGNMENT
CASTING
CASTINGS
CERAMICS
CONDUCTOR DEVICES
CONNECTORS
CONTROL EQUIPMENT
CYLINDERS
ELECTRICAL EQUIPMENT
ENGINES
EQUIPMENT
FABRICATION
FLOW REGULATORS
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
MECHANICAL STRUCTURES
SEALS
SUPPORTS
TUBES
VALVES