Valve stem seal comprising a valve rotating device
AssigneeFederal-Mogul Valvetrain GmbH
InventorsDirk Schober, Frank Zwein, Florian Ringeling, Thorsten Matthias, Stefan Kellermann
Life of this patent
Estimating the term…
Abstract
A valve rotating device with valve stem seal includes a valve rotating device, with a cylinder head rest and a spring rest intended to bear against a valve spring during operation. The valve rotating device is designed to rotate the spring rest relative to the cylinder head rest during operation. A valve stem seal is attached to the cylinder head rest of the valve rotating device. The valve stem seal being designed to bear against a valve stem and to seal same during rotational and axial movements.
Claims15
A valve rotating assembly for a gas-exchange valve of an internal combustion engine, the valve rotating assembly comprising:
- a valve rotating device configured to bear against at least one valve spring during operation of the valve, the valve rotating device including a cylinder head rest, a spring rest, and a valve stem seal;
- wherein the spring rest is configured to rotate relative to the cylinder head rest during the operation of the valve;
- and
- wherein the valve stem seal is attached to the cylinder head rest so as to bear against a valve stem of the valve, the valve stem seal configured to seal the valve stem during rotational and axial movements of the valve stem.
A valve rotating assembly for a gas-exchange valve of an internal combustion engine, the valve rotating assembly comprising:
- a valve rotating device configured to bear against a valve spring during operation of the valve, the valve rotating device including a cylinder head rest, a spring rest, and a valve stem seal;
- wherein the spring rest is configured to rotate relative to the cylinder head rest during the operation of the valve;
- and
- wherein the valve stem seal is attached to the spring rest so as to bear against a valve stem of the valve, the valve stem seal configured to seal the valve stem during rotational and axial movements of the valve stem.
A valve rotating assembly for a gas-exchange valve of an internal combustion engine, the valve rotating assembly comprising:
- a valve rotating device configured to be fastened to a valve stem end of the valve, the valve rotating device including a spring disc, a valve stem fastening, and a valve stem seal;
- wherein the valve stem fastening is configured to rotate relative to the spring disc during operation of the valve;
- and
- wherein the valve stem seal is attached to the valve stem fastening so as to bear against a valve stem of the valve, the valve stem seal configured to seal the valve stem during rotational and axial movements of the valve stem.
A valve rotating assembly for a gas-exchange valve of an internal combustion engine, the valve rotating assembly comprising:
- a valve rotating device configured to be fastened to a valve stem end of the valve, the valve rotating device including a spring disc, a valve stem fastening, and a valve stem seal;
- wherein the valve stem fastening is configured to rotate relative to the spring disc during operation of the valve;
- and
- wherein the valve stem seal is attached to the spring disc so as to bear against a valve stem of the valve, the valve stem seal configured to seal the valve stem during rotational and axial movements of the valve stem.
Dependencies are inferred from the claim text.