CN213068042U - Dalton EGR waste gas differential pressure measuring structure capable of effectively reducing corrosion and blockage - Google Patents
Dalton EGR waste gas differential pressure measuring structure capable of effectively reducing corrosion and blockage Download PDFInfo
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- CN213068042U CN213068042U CN202022047183.6U CN202022047183U CN213068042U CN 213068042 U CN213068042 U CN 213068042U CN 202022047183 U CN202022047183 U CN 202022047183U CN 213068042 U CN213068042 U CN 213068042U
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Abstract
The utility model discloses an effectively reduce dalle formula EGR differential exhaust gas pressure measurement structure of corruption, jam, including the differential exhaust gas pressure measurement body, the first mounting hole of sensor has been seted up in the upper surface left side of differential exhaust gas pressure measurement body, sensor second mounting hole has been seted up on the upper surface right side of differential exhaust gas pressure measurement body, and the waste gas runner has been seted up to the inside of differential exhaust gas pressure measurement body. This effectively reduce dalwood formula EGR differential exhaust gas pressure measurement structure of corruption, jam measures the inside dalwood pipeline of having seted up of body through differential exhaust gas pressure, and its dalwood pipeline occupies length space far less than venturi structure commonly used, can effectively reduce and arrange the demand space, and its each measurement passageway all takes certain inclination to set up simultaneously, and this kind of angle sets up the principle of usable gravity, effectively prevents to measure the risk that passageway ponding, corruption and soot blocked up. The engine is suitable for the engine.
Description
Technical Field
The utility model relates to a EGR differential pressure measurement technical field specifically is a dalwood formula EGR differential gas pressure measurement structure of effectively reducing corruption, jam.
Background
An EGR system exhaust gas recirculation system is a technical means which can effectively reduce the emission of nitrogen oxides. Exhaust gas recirculation refers to the recirculation of a portion of the exhaust gases from the engine back into the intake manifold and back into the cylinders along with fresh mixture. Since exhaust gas contains a large amount of polyatomic gases such as CO2, and gases such as CO2 cannot burn but absorb a large amount of heat due to their high specific heat capacity, the maximum combustion temperature of the air-fuel mixture in the cylinder is lowered, and the amount of NOx generated is reduced. The recirculated exhaust gas will retard the combustion process due to its inertness, which is the main reason why nitrogen oxides will be reduced. In addition, increasing the exhaust gas recirculation rate will reduce the total exhaust gas flow, so the total pollutant output in the exhaust emission will be relatively reduced with the upgrading of the emission regulations, and the technology is widely applied in the field of engines. EGR exhaust gas flow is typically closed-loop controlled by exhaust gas temperature, pressure differential, pressure, EGR valve position.
At present, the EGR differential pressure measurement structure is in contact with exhaust gas for a long time, meanwhile, the fluidity of the exhaust gas in a channel is low, and the failure risk is high. The reliability and the durability of the structure are key factors for ensuring the long-term stability of the EGR flow control precision and are difficult points in the design of an EGR system.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an effectively reduce dalong formula EGR differential exhaust gas pressure measurement structure of corruption, jam to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a Dalton EGR waste gas pressure difference measurement structure capable of effectively reducing corrosion and blockage comprises a waste gas pressure difference measurement body, wherein a first sensor mounting hole is formed in the left side of the upper surface of the waste gas pressure difference measurement body, a second sensor mounting hole is formed in the right side of the upper surface of the waste gas pressure difference measurement body, a waste gas flow channel is formed in the waste gas pressure difference measurement body, a waste gas low pressure measurement channel is formed in the upper surface of the waste gas pressure difference measurement body, a waste gas high pressure measurement channel is formed in the upper surface of the waste gas pressure difference measurement body, a first waste gas flow direction through hole is formed in the front of the waste gas pressure difference measurement body, a second waste gas flow direction through hole is formed in the front of the waste gas pressure difference measurement body, a connecting hole is formed in the front of a bottom support leg of the waste, the left side of the waste gas pressure difference measuring body is provided with a second connecting hole, a Dalton pipeline is arranged inside the waste gas pressure difference measuring body, the left side of the waste gas pressure difference measuring body is provided with a waste gas flow passage air outlet, and the right side of the waste gas pressure difference measuring body is provided with a waste gas flow passage air inlet.
Preferably, the quantity of first connecting hole is 2, sets up respectively and establishes the lower corner before upper corner and the right side behind the right side of differential pressure of exhaust gas measurement body, the quantity of second connecting hole is 2, sets up respectively and establishes the lower corner before upper corner and the left side behind the left side of differential pressure of exhaust gas measurement body.
Preferably, the exhaust gas flow channel is communicated with the exhaust gas low pressure measuring channel and the exhaust gas high pressure measuring channel, and the exhaust gas low pressure measuring channel and the exhaust gas high pressure measuring channel respectively form an included angle of 90 +/-3 degrees with the first exhaust gas flow direction through hole and the second exhaust gas flow direction through hole.
Preferably, the waste gas low pressure measurement passageway and the waste gas high pressure measurement passageway become 3 ~ 10 with the horizontal plane and arrange, and 3 ~ 10 angles set up usable gravity, effectively prevent to measure passageway ponding, corruption and soot and block up.
Preferably, the waste gas low pressure measuring channel and the waste gas high pressure measuring channel are respectively communicated with the high pressure end and the low pressure end of the differential pressure sensor.
Compared with the prior art, the utility model provides an effectively reduce dalong formula EGR exhaust gas pressure differential measurement structure of corruption, jam. The method has the following beneficial effects:
this effectively reduce dalwood formula EGR differential exhaust gas pressure measurement structure of corruption, jam measures the inside dalwood pipeline of having seted up of body through differential exhaust gas pressure, and its dalwood pipeline occupies length space far less than venturi structure commonly used, can effectively reduce and arrange the demand space, and its each measurement passageway all takes certain inclination to set up simultaneously, and this kind of angle sets up the principle of usable gravity, effectively prevents to measure the risk that passageway ponding, corruption and soot blocked up.
Drawings
FIG. 1 is a schematic view of the surface structure of the present invention;
FIG. 2 is a schematic sectional view of the present invention;
FIG. 3 is a schematic top view of the cross-sectional structure of the present invention;
fig. 4 is a schematic side sectional view of the present invention.
In the figure: 1 waste gas differential pressure measurement body, the first mounting hole of 2 sensors, 3 waste gas low pressure measurement passageways, 4 waste gas high pressure measurement passageways, 5 first connecting holes, 6 second connecting holes, 7 first waste gas flow direction through-holes, 8 second waste gas flow direction through-holes, 9 connecting holes, 10 dalton pipeline, 11 waste gas runner gas outlets, 12 waste gas runner gas inlets, 13 sensor second mounting holes, 14 waste gas runners.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: a Dalton EGR waste gas pressure difference measurement structure capable of effectively reducing corrosion and blockage comprises a waste gas pressure difference measurement body 1, wherein a first sensor mounting hole 2 is formed in the left side of the upper surface of the waste gas pressure difference measurement body 1, a second sensor mounting hole 13 is formed in the right side of the upper surface of the waste gas pressure difference measurement body 1, a waste gas flow channel 14 is formed in the waste gas pressure difference measurement body 1, a waste gas low pressure measurement channel 3 is formed in the upper surface of the waste gas pressure difference measurement body 1, a waste gas high pressure measurement channel 4 is formed in the upper surface of the waste gas pressure difference measurement body 1, the waste gas flow channel 14 is communicated with the waste gas low pressure measurement channel 3 and the waste gas high pressure measurement channel 4, the waste gas low pressure measurement channel 3 and the waste gas high pressure measurement channel 4 respectively form 90 +/-3-degree included angles with a first waste gas flow direction through hole 7 and a second waste gas flow direction through hole 8, and, the usable gravity is set at an angle of 3-10 degrees, the water accumulation, the corrosion and the soot blockage of a measuring channel are effectively prevented, a waste gas low-pressure measuring channel 3 and a waste gas high-pressure measuring channel 4 are respectively communicated with a high-pressure end and a low-pressure end of a differential pressure sensor, a first waste gas flow direction through hole 7 is arranged on the front surface of a waste gas differential pressure measuring body 1, a second waste gas flow direction through hole 8 is arranged on the front surface of the waste gas differential pressure measuring body 1, a connecting hole 9 is arranged on the front surface of a bottom supporting leg of the waste gas differential pressure measuring body 1, a first connecting hole 5 is arranged on the right side of the waste gas differential pressure measuring body 1, a second connecting hole 6 is arranged on the left side of the waste gas differential pressure measuring body 1, the number of the first connecting holes 5 is 2, the second connecting holes 6 are respectively arranged on the rear upper right side, dalwood pipeline 10 has been seted up to the inside of exhaust gas pressure differential measurement body 1, exhaust gas flow path gas outlet 11 has been seted up in the left side of exhaust gas pressure differential measurement body 1, exhaust gas flow path air inlet 12 has been seted up on the right side of exhaust gas pressure differential measurement body 1, dalwood pipeline 10 has been seted up through exhaust gas pressure differential measurement body 1 is inside, its dalwood pipeline 10 occupies length space and is far less than venturi structure commonly used, can effectively reduce and arrange the demand space, its each measurement passageway all takes certain inclination to set up simultaneously, the principle of the usable gravity of this kind of angle setting, effectively prevent to measure passageway ponding, the risk of corruption and soot jam.
In the actual operation in-process, when this structure uses, through the inside dalton pipeline 10 of having seted up of exhaust gas pressure differential measurement body 1, its dalton pipeline 10 occupies the length space far less than venturi structure commonly used, can effectively reduce and arrange the demand space, and its each measurement passageway all takes certain inclination to set up simultaneously, and this kind of angle sets up the principle of usable gravity, effectively prevents to measure the risk that passageway ponding, corruption and soot blocked up.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides an effectively reduce dalong formula EGR differential exhaust gas pressure measurement structure of corruption, jam, includes differential exhaust gas pressure measurement body (1), its characterized in that: a first sensor mounting hole (2) is formed in the left side of the upper surface of the waste gas pressure difference measuring body (1), a second sensor mounting hole (13) is formed in the right side of the upper surface of the waste gas pressure difference measuring body (1), a waste gas flow channel (14) is formed in the waste gas pressure difference measuring body (1), a waste gas low pressure measuring channel (3) is formed in the upper surface of the waste gas pressure difference measuring body (1), a waste gas high pressure measuring channel (4) is formed in the upper surface of the waste gas pressure difference measuring body (1), a first waste gas flow direction through hole (7) is formed in the front of the waste gas pressure difference measuring body (1), a second waste gas flow direction through hole (8) is formed in the front of the waste gas pressure difference measuring body (1), a connecting hole (9) is formed in the front of a bottom support leg of the waste gas pressure difference measuring body (1), and a first connecting, the left side of the waste gas pressure difference measurement body (1) is provided with a second connecting hole (6), a Dalton pipeline (10) is arranged inside the waste gas pressure difference measurement body (1), a waste gas flow passage gas outlet (11) is arranged on the left side of the waste gas pressure difference measurement body (1), and a waste gas flow passage gas inlet (12) is arranged on the right side of the waste gas pressure difference measurement body (1).
2. The structure of effectively reducing corrosion, clogging dalton EGR differential exhaust gas pressure measurement according to claim 1, wherein: the quantity of first connecting hole (5) is 2, sets up respectively and establishes the lower corner before upper corner and the right side behind the right side of exhaust gas pressure difference measurement body (1), the quantity of second connecting hole (6) is 2, sets up respectively and establishes the lower corner before upper corner and the left side behind the left side of exhaust gas pressure difference measurement body (1).
3. The structure of effectively reducing corrosion, clogging dalton EGR differential exhaust gas pressure measurement according to claim 1, wherein: the waste gas flow channel (14) is communicated with the waste gas low-pressure measuring channel (3) and the waste gas high-pressure measuring channel (4), and the waste gas low-pressure measuring channel (3) and the waste gas high-pressure measuring channel (4) respectively form an included angle of 90 +/-3 degrees with the first waste gas flow direction through hole (7) and the second waste gas flow direction through hole (8).
4. The structure of effectively reducing corrosion, clogging dalton EGR differential exhaust gas pressure measurement according to claim 1, wherein: the waste gas low pressure measuring channel (3) and the waste gas high pressure measuring channel (4) are arranged at an angle of 3-10 degrees with the horizontal plane.
5. The structure of effectively reducing corrosion, clogging dalton EGR differential exhaust gas pressure measurement according to claim 1, wherein: the waste gas low-pressure measuring channel (3) and the waste gas high-pressure measuring channel (4) are respectively communicated with the high-pressure end and the low-pressure end of the differential pressure sensor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022047183.6U CN213068042U (en) | 2020-09-17 | 2020-09-17 | Dalton EGR waste gas differential pressure measuring structure capable of effectively reducing corrosion and blockage |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022047183.6U CN213068042U (en) | 2020-09-17 | 2020-09-17 | Dalton EGR waste gas differential pressure measuring structure capable of effectively reducing corrosion and blockage |
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| CN213068042U true CN213068042U (en) | 2021-04-27 |
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| CN202022047183.6U Active CN213068042U (en) | 2020-09-17 | 2020-09-17 | Dalton EGR waste gas differential pressure measuring structure capable of effectively reducing corrosion and blockage |
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