Pistons for internal combustion engines
First Claim
1. A piston for an internal combustion engine comprising a piston body of a first metal, a crown in said piston body, a combustion chamber in said crown, a lip portion overhanging said combustion chamber, said lip portion being constituted by an annular insert of a second metal more resistant to operating conditions in said chamber than said first metal, limbs of a third metal secured at one end to the annular insert comprising at least one member embedded in said body and extending from said insert into a portion of said body having a temperature of about 150 degrees centigrade at maximum operating temperature of said piston.
0 Assignments
0 Petitions
Accused Products
Abstract
A piston for an internal combustion engine, having a combustion chamber with an overhanging lip formed by resistant metal insert anchored in the piston by means of members extending from the insert and embedded in the piston material. A portion of the free end of each member is located in a cool portion of the piston and mechanically keyed therein and is preferably also metallurgically bonded to the piston material in order to prevent the insert being loosened during service.
-
Citations
8 Claims
- 1. A piston for an internal combustion engine comprising a piston body of a first metal, a crown in said piston body, a combustion chamber in said crown, a lip portion overhanging said combustion chamber, said lip portion being constituted by an annular insert of a second metal more resistant to operating conditions in said chamber than said first metal, limbs of a third metal secured at one end to the annular insert comprising at least one member embedded in said body and extending from said insert into a portion of said body having a temperature of about 150 degrees centigrade at maximum operating temperature of said piston.
Specification