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US 2013/0091980 A1Published application
Thermal spray coating for connecting rod small end
AssigneeMahle International GmbH
InventorsDavid Domanchuk, Michael T. Lapp, Wolfgang Rein, Christopher Hall, Thomas Stong, Thomas J. Smith
Life of this patent
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Abstract
A connecting rod having a small end and a large end, the small end including a pin bore defined by a pin bore surface. A thermal spray coating applied to at least a portion of the pin bore surface and a method of applying the thermal spray coating to the pin bore surface using a thermal spray technique.
Claims21
A connecting rod comprising:
- a small end having a piston pin bore disposed therein, the piston pin bore defined by a piston pin bore surface having a first portion and a second portion forming an entire circumference of the piston pin bore;
- a large end having a crankshaft pin bore disposed therein, the crankshaft pin bore defined by a crankshaft surface, the crankshaft pin bore being larger than the piston pin bore;
- and
- a thermal spray coating applied to the first portion of the pin bore surface such that the second portion of the pin bore surface is uncoated.
1 more element
A connecting rod comprising:
- a small end having a piston pin bore disposed therein, the piston pin bore defined by a piston pin bore surface having a first portion and a second portion forming an entire circumference of the piston pin bore, wherein the first portion of the pin bore surface is recessed with respect to the second portion of the pin bore surface by a recess distance;
- a large end having a crankshaft pin bore disposed therein, the crankshaft pin bore defined by a crankshaft surface, the crankshaft pin bore being larger than the piston pin bore;
- and
- a thermal spray coating applied to the first portion of the pin bore surface such that the second portion of the pin bore surface is uncoated.
1 more element
A method, comprising:
- providing a connecting rod having a piston pin end, a crankshaft pin end, and a beam extending therebetween;
- forming a piston pin bore in the piston pin end, including forming a piston pin bore surface having a first portion and a second portion forming an entire circumference of the piston pin bore, wherein the first portion of the pin bore surface is recessed with respect to the second portion of the pin bore surface by a recess distance;
- forming a crankshaft pin bore in the crankshaft pin end, the crankshaft pin bore defined by a crankshaft surface, the crankshaft pin bore being larger than the piston pin bore;
- and
- applying a thermal spray coating to the first portion of the pin bore surface such that the second portion of the pin bore surface is uncoated.
2 more elements
Dependencies are inferred from the claim text.