Method of fitting a piston for use in an internal combustion engine
AssigneeDelaware Capital Formation, Inc.
InventorsDavid W. Fussner, Mark E. Chollett
Life of this patent
Estimating the term…
Abstract
A piston assembly including a piston body having a crown and a skirt, the skirt including at least a major thrust face and a minor thrust face, wherein the piston body defines a bore between the major thrust face and the minor thrust face, and a wear coating applied to the major thrust face and the minor thrust face, the wear coating having a cured thickness of at least about 30 microns.
Claims19
A piston assembly comprising:
- a piston body having a crown and a skirt, said skirt including at least a major thrust face and a minor thrust face, wherein said piston body defines a bore between said major thrust face and said minor thrust face;
- and
- a wear coating applied to said major thrust face and said minor thrust face;
- wherein at least one of said piston assembly and packaging therefor is marked to indicate that said piston assembly is intended for use in a corresponding cylinder, said corresponding cylinder having an actual diameter, and wherein a diameter of said skirt with said wear coating is greater than said actual diameter.
A piston assembly comprising:
- a piston body having a crown and a skirt, said skirt including at least a major thrust face and a minor thrust face, wherein said piston body defines a bore between said major thrust face and said minor thrust face;
- and
- a wear coating applied to said major thrust face and said minor thrust face, said wear coating having a cured thickness of at least about 30 microns;
- wherein said piston assembly is marked to indicate that said piston assembly is intended for use in a corresponding cylinder, said corresponding cylinder having an actual diameter, and wherein a diameter of said skirt with said wear coating is greater than said actual diameter.
A piston assembly comprising:
- a piston body having a crown and a skirt, said skirt including at least a major thrust face and a minor thrust face, wherein said piston body defines a bore between said major thrust face and said minor thrust face;
- and
- a wear coating applied to said major thrust face and said minor thrust face, said wear coating having a cured thickness of at least about 30 microns;
- wherein said piston assembly is received in a package that indicates that said piston assembly is intended for use in a corresponding cylinder, said corresponding cylinder having an actual diameter, and wherein a diameter of said skirt with said wear coating is greater than said actual diameter.
A method for fitting a piston having a skirt into a corresponding cylinder having a cylinder diameter, said method comprising the steps of:
- applying a wear coating to at least a portion of said skirt;
- curing said wear coating, wherein a diameter of said coated skirt is greater than said cylinder diameter;
- and
- after said curing step, fitting said piston into said corresponding cylinder to shear at least a portion of said cured wear coating from said skirt;
- and
- marking at least one of said piston and packaging associated therewith to identify at least one of said corresponding cylinder and said cylinder diameter.
A method for fitting a piston having a skirt into a corresponding cylinder having a cylinder diameter, said method comprising the steps of:
- applying a wear coating to at least a portion of said skirt;
- curing said wear coating, said cured wear coating having a thickness of at least about 30 microns, wherein a diameter of said coated skirt is greater than said cylinder diameter;
- and
- after said curing step, fitting said piston into said corresponding cylinder to shear at least a portion of said cured wear coating from said skirt;
- and
- marking at least one of said piston and packaging associated therewith to identify at least one of said corresponding cylinder and said cylinder diameter.
A method for fitting a piston into a cylinder, the method comprising:
- applying a wear coating to at least a portion of a skirt of the piston;
- curing the wear coating;
- selecting a cylinder having an actual diameter less than an actual diameter of the portion of the skirt having the wear coating;
- and
- fitting the piston into the selected cylinder, thereby shearing excess wear coating off of the a portion of the skirt to ensure that a maximum piston-to-cylinder wall clearance, including the wear coating, is not exceeded.
Dependencies are inferred from the claim text.