Ceramic insert for defining precombustion chamber in cylinder he

Details Ceramic insert for defining precombustion chamber in cylinder he Ceramic insert for defining precombustion chamber in cylinder he

1988-08-31

1989-12-19

Argenbright, Tony M.

Internal-combustion engines

Precombustion and main combustion chambers in series

Precombustion chamber liner or coating

123285, F02B 1916

Patent

active

048875686

ABSTRACT:
A cylinder head has an insert assembly defining a precombuation chamber in a cylinder head. The insert assembly includes a domed insert made of ceramics and cast into a cylinder head body. A fuel injection nozzle hole and a glow plug hole are formed so as to open through the domed insert into the precombustion chamber and inclined with respect to a center axis of the precombustion chamber. The domed insert is provided at the inner surface thereof with a flat inner surface portion constituting part of a circular plane of which axis coincides with a center axis of the precombustion chamber and/or a recess constituting part of a truncated cone or a sphere of which axis coincides with the center axis of the precombustion chamber, whereby to eliminate an otherwise occurring sharp edged portion or portions of the domed insert.

REFERENCES:
patent: 3140697 (1964-07-01), Peras
patent: 4651692 (1987-03-01), Morita et al.
patent: 4676206 (1987-06-01), Kawamura et al.

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