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Poppet valve and manufacturing method thereof

A technology of poppet valve and valve stem, which is applied to the field of poppet valve manufacturing of internal combustion engines, and can solve complex problems

Active Publication Date: 2021-07-23
FEDERAL MOGUL VALVETRAIN GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] These manufacturing methods have several disadvantages: they are complex; often require material removal in an additional processing step; the wings must be made of the same material as the valve body

Method used

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  • Poppet valve and manufacturing method thereof
  • Poppet valve and manufacturing method thereof
  • Poppet valve and manufacturing method thereof

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Embodiment Construction

[0029] figure 1 , 2 and 3 show an exemplary embodiment of a poppet valve according to the invention. The poppet valve shown therein (hereinafter also simply referred to as valve) comprises a valve body with a valve stem 2 and a valve head 4 . Protrusions 6 of different predetermined shapes are located on the outer surface of the stem 2 of each valve shown. Typically, one or more protrusions may be located on the outer surface of the valve stem 2 . The at least one protrusion is formed by at least one weld 8 using a cladding method as described below. According to this method, at least one protrusion is formed in particular by superimposing a plurality of weld seams, which allows forming at least one protrusion 6 with a predetermined shape.

[0030] figure 1 A side view of the valve is shown on the left and a top view of the valve is shown on the right. Four protrusions 6 are located equidistantly on the circumference of the rod. The protrusion 6 has the shape of a strai...

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Abstract

The present invention provides a poppet valve for an internal combustion engine, comprising: a valve body having a valve stem and a valve head; and at least one protrusion having a predetermined shape and positioned on the valve stem; wherein the at least one protrusion Formed by at least one weld seam obtained by depositing material on the outer surface of the valve stem using a welding process. Additionally, a method of manufacturing a poppet valve having a protrusion on the valve stem is provided.

Description

technical field [0001] The present invention relates to valves, in particular poppet valves for internal combustion engines, provided with projections, such as wings, on the valve stem. The invention also relates to a corresponding method for producing a poppet valve. Background technique [0002] The stem of an internal combustion engine poppet valve may be provided with wings (ie vanes, fins or ribs) provided on the valve stem to direct the air flow. At the outlet valve, the wings accelerate the airflow at the exhaust system. For inlet valves, the wings create a swirl in the air-fuel mixture or combustion gases, resulting in better distribution of the mixture within the combustion chamber. At the same time, the airflow exerts a force on the wing, causing a (small) rotation of the valve, which means that the valve seat wears evenly and helps avoid leaking gas and fuel over the life of the engine. [0003] There are currently several different ways to manufacture winged p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01L3/06
CPCF01L3/06F01L2303/00Y02T10/12
Inventor 安德烈·马洛尼古拉斯·布特舍尔马克·宾克利达米安·马修托拜厄斯·施罗德
Owner FEDERAL MOGUL VALVETRAIN GMBH
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