US 6,164,260 A · Scraping ring and sealing ring used with a cylinder liner in an internal combustion engine

Abstract

An internal combustion engine includes a cylinder block with a cylinder bore. A cylinder head is attached to the cylinder block and covers the cylinder bore. A cylinder liner within the cylinder bore has a distal end, an inside diameter, and an annular recess extending radially outwardly from the inside diameter at the distal end. A piston is reciprocally disposed within the cylinder liner. An annular scraping ring positioned in the annular recess has an inside diameter which is smaller than the inside diameter of the cylinder liner and is configured to scrape deposits from the piston. The scraping ring extends axially beyond the distal end of the cylinder liner. An annular sealing ring is separate from, located by and positioned radially outwardly adjacent to the scraping ring. The sealing ring directly engages and seals between the cylinder head and the distal end of the cylinder liner.

Claims7

Dependent claims

An internal combustion engine, comprising:

a cylinder block having a cylinder bore;
a cylinder head attached to said cylinder block and covering said cylinder bore;
a cylinder liner within said cylinder bore, said cylinder liner having a distal end, an inside diameter, and an annular recess extending radially outwardly from said inside diameter at said distal end;
a piston reciprocally disposed within said cylinder liner;
an annular scraping ring positioned in said annular recess, said scraping ring having an inside diameter which is smaller than said inside diameter of said cylinder liner and configured to scrape deposits from said piston, said scraping ring extending axially beyond said distal end of said cylinder liner;
and
an annular sealing ring separate from, located by and positioned radially outwardly adjacent to said scraping ring, said sealing ring directly engaging and sealing between said cylinder head and said distal end of said cylinder liner.

4 more elements

Dependencies are inferred from the claim text.

Scraping ring and sealing ring used with a cylinder liner in an internal combustion engine

Life of this patent

Scraping ring and sealing ring used with a cylinder liner in an internal combustion engine

Life of this patent

Abstract

Claims7