Component for a valve train of an internal combustion engine

A valve mechanism, internal combustion engine technology, applied in the direction of engine components, machines/engines, mechanical equipment, etc., can solve the problems of drilling area deformation, falling off, connecting piston deformation, etc., to achieve the effect of reducing wear and reducing pulse force

Active Publication Date: 2012-07-04
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, it is evident that deformations in the area of ​​the borehole can occur due to the disc being pressed into the coupling borehole as a stop mechanism for one end of the coupling piston
In addition, there is the risk that the disk as a stop mechanism becomes loose during operation of the switchable component and that the component falls off undesirably.
[0004] Furthermore, it is disadvantageous that when the coupling piston is acted upon by the hydraulic medium, it strikes relatively "hardly" against the disc as stop mechanism
This impulsive force can also lead to undesired deformation of the coupling piston

Method used

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  • Component for a valve train of an internal combustion engine
  • Component for a valve train of an internal combustion engine
  • Component for a valve train of an internal combustion engine

Examples

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Embodiment Construction

[0024] figure 1 and Figures 2 to 4 A component 1 of a valve train of an internal combustion engine is collectively disclosed, which component 1 can be switched to different strokes for at least one gas exchange valve. As can be easily seen by a person skilled in the art, the component 1 here is configured as a detachable rocker arm.

[0025] The component 1 is composed of a first element 2 and a second element 3 , which are present so as to be movable relative to one another. The first element 2 is designed as an outer rod, while the second element 3 is present as an opposite inner rod that is pivotable in the decoupled situation. The two elements 2 , 3 are distributed at one end on a common shaft 30 , wherein the second element 3 has a contact surface 32 designed as a rotatable roller for the stroke cam.

[0026] The element 2 has an abutment 28 for a gas exchange valve at one end on the underside 27 . At the other end, a cap-shaped abutment 29 for bearing on the top of ...

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PUM

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Abstract

The invention relates to a component (1) for a valve train of an internal combustion engine, the component being switchable to different strokes for a gas exchange valve, having at least one first and second element (2, 3), which are pivotally displaceable relative to each other, wherein in the decoupled state a coupling piston (5) displaceable by hydraulic medium pressure runs in a bore (4) of the first element (2), wherein in the coupled state the piston can be displaced, across a separating gap (6) between the two elements (2, 3), in some regions underneath a driver surface (7) of the other element (3) via the force of a helical compression spring (8), the helical compression spring (8) being clamped between a face (9) of the coupling piston (5) away from the coupling and a stop means (10), wherein the stop means (10) is attached via the radial outer surface (11) thereof in the bore (4) and wherein in the decoupled state the coupling piston (5), with the face (9) away from the coupling, is subjected to a spring-loaded stop on the inner face (12) of the stop means (10).

Description

technical field [0001] The invention relates to a component for a valve train of an internal combustion engine, which component can be switched to different strokes for at least one gas exchange valve, which component has at least one first element and a second element, said element being able to Axial movement or pivoting movement relative to each other, wherein in the decoupling situation [small or zero valve stroke] at least one coupling piston displaceable by hydraulic medium pressure (lozier bar) is distributed in the bore of one of the elements , the coupling piston, for the coupling situation [large valve stroke], can move across the separation gap between the two elements by the force of at least one helical compression spring partly into or below the drive surface of the other element, The helical compression spring is clamped between the end face of the coupling piston facing away from the coupling and the stop means. Background technique [0002] Such a component...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01L13/00F01L1/18
CPCF01L13/0036F01L1/18F01L13/0005
Inventor 约阿希姆·塞茨约阿希姆·克劳斯
Owner SCHAEFFLER TECH AG & CO KG
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