Valve seat-bonding area structures and valve seat-bonded cylinde

Details Valve seat-bonding area structures and valve seat-bonded cylinde Valve seat-bonding area structures and valve seat-bonded cylinde

1996-02-16

1998-08-04

Solis, Erick R.

Internal-combustion engines

Particular piston and enclosing cylinder construction

Cylinder head

1231888, F01L 322

Patent

active

057878536

ABSTRACT:
Valve seat-bonding area structures of a cylinder head unit, wherein a valve seat made of a metal different from and harder than that of the cylinder head unit is bonded to a circumference of a valve opening of the cylinder head unit, which structures are characterized in that a second tapered guide surface, which has an open angle larger than that of a first tapered guide surface with respect to an axis of a valve shaft, is formed outward of the first tapered guide surface in order to prevent pitting and cracking of the surfaces during grinding and improve the gas-interchanging efficiency.

REFERENCES:
patent: 4831976 (1989-05-01), Pozniak et al.
patent: 4896638 (1990-01-01), Shepley

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