Exhaust gas recirculation for filtering system

专利摘要:
PURPOSE: A filtering system of an EGR(exhaust gas recirculation) system is provided to improve performance of an EGR cooler, and to increase endurance of an engine by filtering impurities from exhaust gas by installing a smoke filtering system in an EGR passage. CONSTITUTION: A filtering system of an EGR system is composed of a passage converting valve installed in an intake pipe; a bypass opened and closed by the passage converting valve, and connected to an intake manifold; an EGR cooler installed in the bypass; an EGR pipe connected to the bypass and an exhaust manifold); an EGR valve installed at the exhaust manifold of the EGR pipe; and an EGR cooler filter(42) mounted between the EGR valve and the EGR cooler of the bypass. Performance of the EGR cooler is improved with filtering impurities off from exhaust gas by installing the filter prior to the EGR cooler. Endurance of the engine is improved, and expenses are reduced.
公开号:KR20020030351A
申请号:KR1020000060945
申请日:2000-10-17
公开日:2002-04-25
发明作者:김대학
申请人:이계안；현대자동차주식회사；
IPC主号:

专利说明:

Filtering system of exhaust gas recirculation unit {EXHAUST GAS RECIRCULATION FOR FILTERING SYSTEM}
[10] The present invention relates to a filtering system of an exhaust gas recirculation apparatus, and more particularly, by installing a soot filtration device in an EGR passage to improve the performance of the EZR cooler by filtering the impurities in the exhaust gas before the EZR cooler. The present invention relates to a filtering system of an exhaust gas recirculation device for increasing the durability of an engine.
[11] 1 is a view schematically showing an application of an EG cooler according to the prior art, in which a bypass passage 6 formed in an intake pipe 4 of an engine 2 and an inlet of the bypass passage 6 are shown in FIG. The passage switching valve 8 is provided in the, and the EZR cooler 10 is provided in the bypass passage 6.
[12] The exhaust recirculation pipe 16 is formed to connect the bypass passage 6 and the exhaust manifold 12 to which the ISR valve 14 is installed.
[13] Since the EZR cooler 10 can reduce NOx by effectively reducing exhaust temperature (O2 concentration in exhaust gas), it is used as a harmful device for reducing diesel engines.
[14] This reduces the exhaust gases and mixes them with fresh air to burn them, thus reducing the nitrogen oxides in the exhaust gases.
[15] Accordingly, in order to maintain the performance of the EZC cooler, it is necessary to remove foreign substances in the EZR cooler by connecting to the intake duct.
[16] In order to reduce the nitrogen oxides in the exhaust gas, increasing the ratio of EZR (the amount of exhaust gas in the new air) causes a decrease in output due to the lack of a new air volume and fuel amount, and piston ring and valve wear due to the increase of soot in the exhaust gas. There is a problem that causes a serious problem in the vehicle marketability due to deterioration of engine performance and lack of durability, excessive oil consumption.
[17] There is a possibility that the durability of the EZR cooler is poor and the durability of the engine may be lowered, and an expensive material cost is expected at the time of replacement.
[18] In addition, when impurities are attached to the EZC cooler, there is a problem in that the replacement cycle is shortened.
[19] Therefore, the present invention has been invented to solve the above-mentioned problems, an object of the present invention is to install the soot filtration device in the passage of the EEG (EGR) by filtering the impurities in the exhaust gas before the EEG cooler It is to provide a filtering system of the exhaust gas recirculation device to improve the performance of the cooler and increase the durability of the engine.
[1] 1 is a view schematically showing the application of an EG cooler according to the prior art.
[2] Figure 2 schematically shows that the filtering system of the recirculation apparatus according to the present invention is applied.
[3] 3 is an exploded perspective view showing a filtering device according to the present invention;
[4] 4 is a side sectional view showing a filtering device according to the present invention;
[5] <Description of the symbols for the main parts of the drawings>
[6] 30. Filtering System Passage switch valve
[7] 34. Bypass Path 36. EZR Cooler
[8] 38. Exhaust recirculation pipe EZ valve
[9] 42. EZR Cooler Filter
[20] The present invention for realizing this
[21] Passage switching valve installed in the intake pipe,
[22] A bypass passage formed to be connected to the intake manifold while being controlled by the passage switching valve;
[23] An EG cooler installed at a predetermined position of the bypass passage,
[24] An exhaust recirculation pipe connected to an exhaust manifold side while being connected to a bypass passage before the EZC cooler,
[25] An easy valve installed on an exhaust manifold side of the exhaust recirculation pipe;
[26] It is to provide a filtering system of the exhaust gas recirculation device, characterized in that it is made by installing an EG cooler filter device between the EG valve and the EG cooler of the bypass passage.
[27] Hereinafter, the preferred configuration and operation of the present invention will be described in detail with reference to the accompanying drawings.
[28] 2 is a view schematically showing that the filtering system of the recirculation apparatus according to the present invention is applied, Figure 3 is an exploded perspective view of the filtering apparatus according to the present invention.
[29] 4 is a side sectional view showing a filtering device according to the present invention.
[30] The filtering system 30 of the exhaust gas recirculation device includes a passage switching valve 32, a bypass passage 34, an EG cooler 36, an exhaust recirculation pipe 38, an EG valve 40, and an EG cooler filter. It consists of the apparatus 42, and is comprised.
[31] The passage switching valve 32 is provided in the intake pipe 43 and controls the opening of the bypass passage 34.
[32] The bypass passage 34 is provided in the engine 46 while being formed to be bypassed to the intake manifold 44 while being controlled to be opened and closed by the passage switching valve 32.
[33] The EG cooler 36 is installed at a predetermined position of the bypass passage 34, which is an apparatus that effectively reduces nitrogen oxides by reducing exhaust temperature (O 2 concentration in exhaust gas).
[34] The exhaust recirculation pipe 38 is connected to the exhaust manifold 48 side while being connected to the bypass passage 34 before the EG cooler 36.
[35] The easy valve 40 is provided in the exhaust recirculation pipe 38.
[36] The EG valve 40 recirculates a part of the exhaust gas through the intake pipe to lower the maximum temperature at the time of combustion to suppress the generation of nitrogen oxides, and generally does not operate during idling or high speed operation with low generation of nitrogen oxides. I'm not.
[37] The EG cooler filter device 42 is provided between the EG valve 40 and the EG cooler 36 of the bypass passage 34.
[38] The EG cooler filter device 42 includes a plurality of flange pipes 50 installed in the recirculation pipe 38 and a guide body 54 interposed between the flange pipes 50 via a gasket 52. ), And a cylindrical filter 58 inserted into the hollow portion 56 of the guide body 54.
[39] The filter 58 is composed of a first filler 60 made of a soot filtration material such as glass wool, and a second filter 62 which is a dry body of a material for removing moisture on one side of the first filter 60. It is done.
[40] The operation of the present invention made as described above is controlled by the electronic control device 64 in accordance with a preset control sequence of the passage switching valve 32 in accordance with the driving state of the engine to open the bypass passage 34 while opening the exhaust manifold. 48 controls the easy valve 40 of the recirculation pipe 38 connected to the shaft.
[41] Accordingly, the exhaust gas introduced through the exhaust manifold 48 by the negative pressure of the intake pipe 43 passes through the EG valve 40 and also passes through the EZ cooler filter device 42.
[42] At this time, the exhaust gas passing through the EZC cooler filter device 42 passes through the first and second filters 60 and 62 of the filter 58 composed of a filter agent and a desiccant, and then passes through the intake pipe 43. After passing through the EZR cooler 36 together with the fresh air introduced into the passage 34, it is supplied to the combustion chamber of the engine 46 via the intake manifold 44.
[43] By installing a filter device before the EG cooler to filter out impurities in the exhaust gas, there is an effect of improving the performance of the EG cooler.
[44] In addition, there is an effect of increasing the durability of the engine by improving the function of the EZR cooler.
[45] By applying low-cost replacement parts to the filter, the maintenance cost of the customer is reduced.

权利要求:
Claims (3)
[1" claim-type="Currently amended] Passage switching valve installed in the intake pipe,
A bypass passage formed to be connected to the intake manifold while being controlled by the passage switching valve;
An EG cooler installed at a predetermined position of the bypass passage,
An exhaust recirculation pipe connected to an exhaust manifold side while being connected to a bypass passage before the EZC cooler,
An easy valve installed on an exhaust manifold side of the exhaust recirculation pipe;
And an EG cooler filter device provided between the EZ valve and the EZ cooler of the bypass passage.
[2" claim-type="Currently amended] The method according to claim 1,
The EZR cooler filter device includes a plurality of flange tubes installed in a recirculation tube, a guide body interposed between the flange tubes and a gasket disposed therebetween, and a cylindrical filter inserted into the hollow portion of the guide body. Filtering system of the exhaust gas recirculation device, characterized in that made by.
[3" claim-type="Currently amended] The method according to claim 1,
The filter is a filtering system of an exhaust gas recirculation apparatus, characterized in that it comprises a first filler made of a soot filtration material such as glass wool, and a second filter which is a dry body of a material for removing moisture on one side of the first filter.

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同族专利:

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引用文献:

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公开号 | 申请日 | 公开日 | 申请人 | 专利标题

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法律状态:
2000-10-17|Application filed by 이계안, 현대자동차주식회사

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2000-10-17|Priority to KR1020000060945A

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2000-10-17|Priority claimed from KR1020000060945A

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2002-04-25|Publication of KR20020030351A

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2002-10-18|Application granted

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2002-10-18|Publication of KR100357586B1

优先权:

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申请号 | 申请日 | 专利标题

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KR1020000060945A|KR100357586B1|2000-10-17|Exhaust gas recirculation for filtering system|