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Valve device

A valve device and valve seat technology, which is applied in the direction of valve device, exhaust device, noise reduction device, etc., can solve the problems that the reliable opening of the valve device cannot be guaranteed, and the installation space of the valve device is enlarged.

Active Publication Date: 2021-04-13
MSG MECHATRONIC SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When a valve device of this type is used (usually as a secondary air valve in the exhaust system of a motor vehicle), it has proven to be disadvantageous that the valve closing member (in particular due to the Contaminants deposited on the valve seat) stick to the valve seat so that without increasing the area of ​​the diaphragm so that a correspondingly large force is achieved via a pressure difference acting on a larger area of ​​the diaphragm, the valve Reliable opening of the device cannot be ensured
However, this also has the disadvantage that the installation space of the valve device is disadvantageously enlarged

Method used

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  • Valve device
  • Valve device
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Examples

Experimental program
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Embodiment Construction

[0037] Figure 1 to Figure 3 The valve device 1 is shown in a sectional view. It can be seen that the valve device 1 comprises a valve housing 2 with a diaphragm clamping cover 31 , an inlet 3 which can generally be connected to a secondary air line and an outlet 4 which can be connected to a motor vehicle An exhaust pipe system in which a fluid connection is possible between the inlet 3 and the outlet 4 via the valve seat 6 comprising the valve opening 5 . The valve opening 5 can be closed by a valve closing member comprising a valve bell 33 and a valve plate 7 arranged in the valve bell 33, since the valve bell 33 and / or the valve plate 7 are pressed onto the valve seat 6, the valve Seat 6 usually consists of an elastomer.

[0038] The valve closing member (consisting in this case of valve bell 33 , valve plate 7 and return spring 21 connecting valve bell 33 and valve plate 7 ) is rigidly connected to valve stem 19 at valve bell 33 . Thus, when the valve plate 7 is open a...

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Abstract

The invention relates to a valve device (1), in particular a secondary air valve for an exhaust gas section of an internal combustion engine, having a valve housing (2) with an inlet (3) and an outlet (4), a valve seat (6) which is arranged between the inlet (3) and the outlet (4) and has a valve opening (5), which valve opening (5) can be closed by way of a valve closing member (7, 21, 33) which is pressed against the valve seat (6) by means of a predefined force, and a diaphragm (8) which acts on the valve closing member (7, 21, 33), wherein a first control chamber (9) is separated from a second control chamber (10) by way of the diaphragm (8), with the result that the valve can be switched between the first control chamber (9) and the second control chamber (10) by means of a pressure difference. In order to ensure reliable opening even under adverse operating conditions, it is provided according to the invention that the diaphragm (8) is connected to the valve closing member (7, 21, 33) at least over a part range of a possible stroke of the valve closing member (7, 21, 33) via a gear mechanism (11, 27) which is configured in such a way that a movement of the diaphragm (8) is transformed into a movement of the valve closing member (7, 21, 33) at a lower speed.

Description

technical field [0001] The invention relates to a valve device, in particular a secondary air valve for an exhaust pipe section of an internal combustion engine, said valve device comprising a valve housing, a valve seat and a diaphragm, said valve housing having an inlet and an outlet, The valve seat is arranged between the inlet and the outlet and comprises a valve opening which can be closed by means of a valve closing member which is pressed against the valve seat by means of a predetermined force, the diaphragm acting on On the valve closing member, wherein the first control chamber is separated from the second control chamber by a diaphragm, with the result that the valve device can be switched by means of a pressure difference between the first control chamber and the second control chamber. Background technique [0002] A valve arrangement of the type named at the outset is known from the prior art, in particular from document DE 101 48 384 A1. When a valve device o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N3/22F01N3/30G05D16/06
CPCF16K31/165F16K31/1262F16K31/1266F01N3/227G05D16/0683F01N3/30F01N2390/06G05D16/0658
Inventor E·兰普尔D·托伊斯尔
Owner MSG MECHATRONIC SYST