Engine with valve seat inserts and method of retaining

Patent · Tue May 23 04:00:00 EDT 1989

OSTI ID:5617686

Pozniak, D J; Kutkus, L

This patent describes an internal combustion engine of means defining a combustion chamber having an inner wall, the wall having a annular recess with cylindrical wall around the port at its juncture with the chamber, a valve seat insert retained in the recess, the insert comprising a hard metal ring having an outer side received in and engaging the recess cylindrical wall and a seat end facing the combustion chamber and including an annular valve seat at its inner edge the valve seat being centered on an axis, and an outer portion of the seat end and an adjacent portion of the combustion chamber wall together forming an outwardly dished portion extending longitudinally and radially inwardly relative to the extreme end of port opening at an angle in the range of from 20/sup 0/ to 35/sup 0/ from a plane normal to the valve seat axis the valve seat extending further inwardly from the dished portion at an angle in the range of from 40/sup 0/ to 50/sup 0/ from the normal plane.

• Assignee: General Motors Corp., Detroit, MI
• Patent Number(s): US 4831976
• OSTI ID: 5617686
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
COMBUSTION CHAMBERS
CONTROL EQUIPMENT
DESIGN
ENGINES
EQUIPMENT
FLOW REGULATORS
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
MECHANICAL STRUCTURES
SUPPORTS
VALVES