Heat insulated reciprocating component of an internal combustion

Details Heat insulated reciprocating component of an internal combustion Heat insulated reciprocating component of an internal combustion

1985-08-22

1986-05-27

Feinberg, Craig R.

Internal-combustion engines

Particular piston and enclosing cylinder construction

Cylinder detail

123669, 92212, 92231, F16J 104

Patent

active

045909016

ABSTRACT:
A heat insulated reciprocating component, such as a piston or a valve, for an internal combustion engine comprises a main component body and a ceramic member secured to the body by interference fit with a metal connector which is brazed to the body. In one embodiment, the main body of a piston has an outwardly opening cavity, a ceramic member in the cavity having an annular groove, and a ring seated in the groove and brazed to side of the cavity. In another embodiment, the combustion wall defining face of the valve has a ceramic member mounted thereon, and metal ring in overlapping engagement with the periphery of the member and brazed to the body of the valve. The invention also comprehends the method of making such a component by applying a metal ring in overlapping engagement with the periphery of a ceramic member, mounting a brazing alloy shim on the ring, assembling these parts on the combustion chamber end of the component, and brazing the ring to the component.

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