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US 6,907,848 B2Granted
Connecting rod with lubricant tube
AssigneeGeneral Motors Corporation
InventorJohn M. Beardmore
Life of this patent
Estimating the term…
Abstract
A connecting rod includes a connecting rod body having a crank arm bore formed in a first end and a pin bore formed in a second end. A tube is connected to the body for carrying lubricant from the first end to the second end.
Claims7
A connecting rod comprising:
- a connecting rod body having a crank arm bore formed in a first end and a pin bore formed in a second end;
- a tube connected to the body for carrying lubricant from the first end to the second end, the tube being external to the body between the first and second ends;
- and
- a plurality of spray holes formed in the second end for spraying lubricant received from the tube onto a piston;
- wherein said plurality of spray holes comprises a top hole for spraying a piston dome and side holes for spraying a piston skirt.
2 more elements
A connecting rod comprising:
- a connecting rod body having a crank arm bore formed in a first end and a pin bore formed in a second end;
- a tube connected to the body for carrying lubricant from the first end to the second end, the tube being external to the body between the first and second ends;
- a plurality of spray holes formed in the second end for spraying lubricant received from the tube onto a piston;
- wherein the connecting rod body has a first drilled passage formed in the first end and a second drilled passage formed in the second end, and said tube has opposing ends received in the first and second drilled passages, respectively;
- and
- first and second bushing members positioned in the pin bore forming a channel therebetween and each having a plurality of squirt grooves formed therein, wherein lubricant is received from the second drilled passage into said channel and distributed to a piston dome and a piston skirt/bore interface through said plurality of squirt grooves.
3 more elements
A connecting rod comprising:
- a connecting rod body having a crank arm bore formed in a first end and a pin bore formed in a second end;
- and
- a tube connected to the body for carrying lubricant from the first end to the second end;
- wherein the tube is attached to the body by tack-welded straps.
1 more element
A connecting rod comprising:
- a connecting rod body having a crank arm bore formed in a first end and a pin bore formed in a second end;
- a tube connected to the body for carrying lubricant from the first end to the second end;
- wherein the connecting rod body has a first drilled passage formed in the first end and a second drilled passage formed in the second end, and said tube has opposing ends inserted into the first and second drilled passages, respectively;
- wherein the tube is attached to the body by tack-welded straps.
1 more element
A connecting rod comprising:
- a connecting rod body having a crank arm bore formed in a first end and a pin bore formed in a second end;
- a tube connected to the body for carrying lubricant from the first end to the second end, the tube being external to the body between the first and second ends;
- a plurality of spray holes formed in the second end for spraying lubricant received from the tube onto a piston;
- wherein the connecting rod body has a first drilled passage formed in the first end and a second drilled passage formed in the second end, and said tube has opposing ends received in the first and second drilled passages, respectively;
- wherein the first passage intersects the crank arm bore, and the second passage intersects the pin bore;
- and
- wherein the crank arm bore is configured to define a crescent-shaped annulus between the connecting rod body and an upper rod bearing disposed in the crank arm bore, the crescent-shaped annulus being in fluid communication with the first drilled passage such that lubricant is supplied to the first end through the crescent-shaped annulus.
4 more elements
Dependencies are inferred from the claim text.