Insert for a cylinder sleeve or a cylinder of an internal...

Details Insert for a cylinder sleeve or a cylinder of an internal... Insert for a cylinder sleeve or a cylinder of an internal...

2007-04-18

2009-02-03

Solis, Erick (Department: 3747)

Internal-combustion engines

Particular piston and enclosing cylinder construction

Cylinder head

C123S193200

Reexamination Certificate

active

07484493

ABSTRACT:
An insert for a cylinder sleeve or a cylinder of an internal combustion engine is provided for narrowing the diameter of the cylinder sleeve or cylinder in the region of the upper dead center of a piston guided in the cylinder sleeve or cylinder. The insert is formed as an open, biased ring having a ring joint, which ring is held radially by means of its radial forces, which act outward, and axially by a recess in the cylinder sleeve or cylinder, in such a manner that the radial surface pressure is approximately the same on the circumference, whereby its ratio of ring wall thickness (d) to inside diameter (D) of the cylinder sleeve or the cylinder amounts to between 0.001 and 0.02.

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