Internal combustion engine and liner installation ring

Details Internal combustion engine and liner installation ring Internal combustion engine and liner installation ring

2004-10-15

2008-10-21

McMahon, M. (Department: 3747)

Internal-combustion engines

Particular piston and enclosing cylinder construction

Cylinder detail

C123S193300

Reexamination Certificate

active

07438037

ABSTRACT:
An internal combustion engine includes: a cylinder block having one or more cylinders, a cylinder liner in a tubular shape disposed inside the cylinder; a piston reciprocating inside the cylinder liner and having a top land portion formed of an outer periphery of the piston sandwiched between a piston head and an uppermost ring groove; and a liner installation ring forming, inside the cylinder, a circular step portion protruding toward the inner periphery of the cylinder liner. The liner installation ring is disposed in the cylinder block or the cylinder liner in such a manner that the bottom face of the liner installation ring face to the uppermost portion of the cylinder liner. The liner installation ring is disposed at a position in accordance with the upper end position of the top land portion when the piston reaches a top dead center. The liner installation ring is set to protrude from the inner periphery of the cylinder liner in an inward direction at a length of 0.05 mm or more to 0.5 mm less.

REFERENCES:
patent: 6158407 (2000-12-01), Mizutani
patent: 6164260 (2000-12-01), Bock
patent: 6367463 (2002-04-01), Nurmi
patent: 2005/0279296 (2005-12-01), Coney et al.
patent: SHO 58-81347 (1983-06-01), None
patent: 8-338301 (1996-12-01), None
patent: 11-294255 (1999-10-01), None

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