Top deck surface coating of engine block
AssigneeCaterpillar Inc.
InventorsRobert E. Sharp, Adam William Ostein, Curtis John Graham, Jarrod David Moss, Bharat Kumar Meduru
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Abstract
A method of manufacturing an engine block is disclosed. In one embodiment, the method includes providing an engine block including a cylinder bore and a top deck with a head face including a predetermined surface roughness. The method also includes masking the cylinder bore with a masking plug, the masking plug being located at a predetermined insertion distance measured from a masking plug outer surface to the head face. The method further includes applying a corrosion resistant coating to the top deck over the head face and machine finishing the engine block including the coating to the engine block specifications.
Claims18
A method of manufacturing an engine block, the method comprising:
- providing an engine block including a block body and a cylinder bore, the block body including a top deck with a head face and the cylinder bore extending into the block body from the head face, the head face including a predetermined surface roughness;
- masking the cylinder bore including inserting a masking plug into the cylinder bore, the masking plug being located at a predetermined insertion distance measured from a masking plug outer surface to the head face;
- applying a corrosion resistant coating to the top deck over the head face after masking the cylinder bore with the masking plug;
- removing the masking plug from the cylinder bore;
- and
- machine finishing the engine block including the coating to the engine block specifications.
A method of remanufacturing an engine block including a block body and a cylinder bore, the block body including a top deck with a head face and the cylinder bore extending into the block body from the head face, the method comprising:
- roughening the head face to a predetermined surface roughness;
- inserting a masking plug into the cylinder bore using an insertion tool to locate the masking plug at a predetermined insertion distance measured from a masking plug outer surface to the head face to mask the cylinder bore;
- applying a corrosion resistant coating to substantially cover the head face after masking the cylinder bore with the masking plug;
- removing the masking plug from the cylinder bore;
- and
- machine finishing the engine block including the coating to the engine block specifications.
Dependencies are inferred from the claim text.