Piston cylinder arrangement for an oil free compressor having cooling passageways and method of cooling wrist pin bearing surface
AssigneeWestinghouse Air Brake Technologies Corporation
InventorJeffrey Hritz
Life of this patent
Estimating the term…
Abstract
A piston cylinder arrangement for an air compressor including a cylinder, a connecting rod having a wrist pin receiving end, a wrist pin provided in the wrist pin receiving end of the connecting rod, and a piston provided on the connecting rod via the wrist pin and positioned within the cylinder. At least one passageway may be defined in the wrist pin to permit air to flow into the wrist pin from the cylinder.
Claims20
A piston cylinder arrangement for an air compressor, comprising:
- a cylinder;
- a connecting rod having a wrist pin receiving end;
- a hollow cylindrical wrist pin provided in the wrist pin receiving end of the connecting rod;
- and
- a piston provided on the connecting rod via the wrist pin and positioned within the cylinder,
- wherein at least one passageway is defined in a cylindrical wall of the wrist pin to permit air to flow into the wrist pin from the cylinder.
A piston cylinder arrangement for an air compressor, comprising:
- a cylinder;
- a connecting rod having a wrist pin receiving end;
- a wrist pin provided in the wrist pin receiving end of the connecting rod;
- and
- a piston provided on the connecting rod via the wrist pin and positioned within the cylinder,
- wherein at least one passageway is defined in the wrist pin to permit air to flow into the wrist pin from the cylinder, and
- wherein at least one outlet passageway is defined in the piston to permit the air to flow out of the wrist pin through the piston.
An air compressor for a rail vehicle, comprising:
- a compressor housing;
- a crankshaft assembly supported by the compressor housing;
- and
- at least one piston cylinder supported in the compressor housing, the at least one piston cylinder comprising:
- a cylinder;
- a connecting rod having a wrist pin receiving end, the connecting rod linked to the crankshaft assembly;
- a hollow cylindrical wrist pin provided in the wrist pin receiving end of the connecting rod;
- and a piston provided on the connecting rod via the wrist pin and provided within the cylinder,
- wherein at least one passageway is defined in a cylindrical wall of the wrist pin to permit air to flow into the wrist pin from the cylinder.
An air compressor for a rail vehicle, comprising:
- a compressor housing;
- a crankshaft assembly supported by the compressor housing;
- and
- at least one piston cylinder supported in the compressor housing, the at least one piston cylinder comprising:
- a cylinder;
- a connecting rod having a wrist pin receiving end, the connecting rod linked to the crankshaft assembly;
- a wrist pin provided in the wrist pin receiving end of the connecting rod;
- and a piston provided on the connecting rod via the wrist pin and provided within the cylinder,
- wherein at least one passageway is defined in the wrist pin to permit air to flow into the wrist pin from the cylinder, and
- wherein at least one outlet passageway is defined in the piston to permit the air to flow out of the wrist pin through the piston.
A method of cooling a wrist pin in a piston cylinder of an air compressor, comprising:
- directing air from a compressor housing of the air compressor into the piston cylinder;
- directing the air from the piston cylinder into the wrist pin provided on a connecting rod in the piston cylinder;
- directing the air through the wrist pin;
- and
- directing the air back into the compressor housing through the wrist pin.
Dependencies are inferred from the claim text.