Quick oil return cylinder liner
AssigneeMahle Automotive Technologies (China) Co., Ltd.
InventorsWentao Jiang, Haixiao Chai
Life of this patent
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Abstract
A quick return oil cylinder liner is disclosed. The cylinder liner includes an elongated cylindrical body having an outer surface and an inner surface defining a liner central axis extending between a first liner axial end and a second liner axial end. The inner surface is configured to form a combustion chamber with a piston and an engine housing. A quick oil return part is arranged on the inner surface of the cylinder liner corresponding to a non-skirt part of the piston. The oil return part is positioned below a position of the inner surface corresponding to an oil blade of an oil ring of the piston when the piston is positioned at a bottom dead center position. The oil return part extends to the second linear axial end and forms at opening at the second liner axial end.
Claims20
A quick return oil cylinder liner, comprising:
- an elongated cylindrical body having an outer surface and an inner surface, the inner surface defining a liner central axis extending between a first liner axial end and a second liner axial end, the inner surface being configured to form a combustion chamber with a piston and an engine housing, the piston being located in the elongated cylindrical body and being movable relative to the liner between a top dead center position and a bottom dead center position, the piston being provided with an oil ring,
- a quick oil return part is arranged on the inner surface of the cylindrical body corresponding to a non-skirt part of the piston, and the quick oil return part is positioned below a position of the inner surface corresponding to an oil blade of the oil ring when the piston is positioned at the bottom dead center position;
- wherein the quick oil return part extends to the second liner axial end and defines an opening at the second liner axial end;
- and
- wherein the quick oil return part comprises a plurality of oil return grooves extending along the central axis of the elongated cylindrical body to the second liner axial end.
A cylinder liner and piston assembly, said assembly comprising:
- a quick return cylinder liner, the quick return cylinder liner including:
- an elongated cylindrical body having an outer surface and an inner surface, the inner surface defining a liner central axis extending between a first liner axial end and a second liner axial end, the inner surface being configured to at least partially define a combustion chamber;
- and
- a quick oil return part arranged on the inner surface of the cylindrical body;
- a piston located in the quick return cylinder liner and moveable between a top dead center position and a bottom dead center position relative to the quick return cylinder liner;
- wherein the quick oil return part is arranged on the inner surface of the cylindrical body corresponding to a non-skirt part of the piston, and the quick oil return part is positioned below a position of the inner surface corresponding to an oil blade of an oil ring of the piston when the piston is positioned at the bottom dead center position;
- and wherein the quick oil return part extends to the second liner axial end and defines an opening at the second liner axial end;
- and
- wherein the quick oil return part comprises a plurality of oil return grooves extending along the central axis of the elongated cylindrical body to the second liner axial end.
Dependencies are inferred from the claim text.