CN211085687U - Device capable of adjusting and simulating blockage and leakage of EGR cooler - Google Patents
Device capable of adjusting and simulating blockage and leakage of EGR cooler Download PDFInfo
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- CN211085687U CN211085687U CN201922468918.XU CN201922468918U CN211085687U CN 211085687 U CN211085687 U CN 211085687U CN 201922468918 U CN201922468918 U CN 201922468918U CN 211085687 U CN211085687 U CN 211085687U
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Abstract
The utility model discloses a device that adjustable simulation EGR cooler blockked up and leaked, the device series connection is in the EGR cooler pipeline of engine, and the device includes: a plurality of water flow meters, wherein one end of one water flow meter is connected with the EGR cooler pipeline; one end of one valve is connected with the other end of the water flow meter, and the valve is used for simulating and monitoring different EGR cooler flow rates in real time by controlling different valve opening degrees; wherein, the water flowmeter is respectively connected with the valve and the EGR cooler pipeline through rubber tubes or welded connection. The utility model discloses a device position selection is nimble, and the adjustment is convenient, can select different valve openness to carry out flow control according to the different leakage quantity of simulation, jam degree demand, moreover in the completion experiment back, pull down relevant pipeline and can resume normal state to the engine. The tool is suitable for different engines and can be repeatedly used.
Description
Technical Field
The present invention relates to an engine, and more particularly to an adjustable device for simulating EGR cooler blockage and leakage.
Background
Currently, with the continuous strictness of emission regulations, the technical difficulty is greatly improved by national emission upgrading. The manufacturer selects a brand new technical route for the engine to meet the requirements of new emission laws, economy and dynamic property; compared with the lean-burn combustion technical route of the national fifth natural gas engine: in the six-emission stage, more engine enterprises adopt equivalent combustion technical routes; meanwhile, in order to reduce the original exhaust and exhaust temperature of the engine, an EGR (exhaust gas recirculation) system is introduced, and a technical route of equivalent + EGR is formed. The EGR system has the main working principle that a part of cooled exhaust gas is introduced into the cylinder to participate in combustion again, so that the aims of widening the detonation boundary of the engine, reducing the exhaust temperature and improving the economy are fulfilled. According to the characteristics of the EGR system, the cooling capacity of the EGR system plays a critical role in controlling the temperature of exhaust gas, and the cooling capacity of the EGR cooler is reduced due to the problems of scale blockage, pipeline leakage and the like of the EGR cooler, so that the intake temperature of an engine is influenced, and the combustion of the engine is not facilitated. In combination with the important influence of the EGR system in the equivalent + EGR technology route, there are many contents for the monitoring of the EGR system in the six OBD regulations, one of which is the monitoring of the efficiency of the EGR cooler. When the EGR cooler of the engine is blocked or leaked, the cooling efficiency of the EGR cooler is reduced, so that the temperature of EGR waste gas is too high, the temperature of mixed gas in a cylinder is influenced, the combustion of the engine is influenced, the gas consumption of the engine is reduced if the temperature is low, and the engine knocks if the temperature is high to damage the engine.
However, the prior art simulates the primary way of plugging or leaking an EGR cooler, i.e., drilling a hole in the EGR cooler water line or operating at a gasket at the interface of two parts in the EGR cooler line, i.e., trapping the reduced flow by artificially fabricating a small-bore gasket. The direct drilling mode cannot accurately simulate the required leakage amount once and solves the problem that the leaked antifreezing solution is inconvenient to process. Although the manufactured gasket is simple to cut off, the flow of the antifreeze cannot be accurately controlled and dynamically adjusted, and the use is inconvenient, so that the flow of the antifreeze is uncontrollable and unquantized.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an adjustable simulation EGR cooler blocks up and device of leaking, and it can solve prior art's above-mentioned problem.
In order to achieve the above object, the utility model provides an adjustable simulation EGR cooler blocks up and device of leaking, and the device series connection is in the EGR cooler pipeline of engine, and the device includes: a plurality of water flow meters, wherein one end of one water flow meter is connected with the EGR cooler pipeline; one end of one valve is connected with the other end of the water flow meter, and the valve is used for simulating and monitoring different EGR cooler flow rates in real time by controlling different valve opening degrees; wherein, the water flowmeter is respectively connected with the valve and the EGR cooler pipeline through rubber tubes or welded connection.
In one or more embodiments, the device is arranged between the EGR cooler and the outlet pipe of the engine block, wherein one end of the water flow meter is connected with the inlet of the EGR cooler and the other end of the valve is connected with the outlet of the engine block.
In one or more embodiments, the valve is a manual valve or an electric valve.
In one or more embodiments, when the valve is an electric valve, the electric valve is connected to a computer or a controller, the water flow meter is used for inputting real-time flow, and the computer or the controller adjusts the opening of the electric valve by controlling, so as to realize the opening program control of the electric valve.
In one or more embodiments, the plurality of water flow meters have different ranges and the plurality of valves have different pipe diameters to accommodate different engines.
Compared with the prior art, the device capable of adjusting and simulating the blockage and leakage of the EGR cooler has flexible position selection, and can select the installation position according to the structural characteristics and the arrangement convenience of different engines; the adjustment convenience can be selected different valve openness according to the different leakage of simulation, jam degree demand and carry out flow control. The utility model discloses a device can also change manual valve into the motorised valve to realize automatically regulated, the closed-loop control function. Because this frock possesses flow measurement function, the homoenergetic carries out accurate simulation when simulation EGR cooler blocks up/leaks at every turn, and different flow accurately reappears. After the test is finished, the engine can be recovered to a normal state by detaching the related pipeline. The tool is suitable for different engines and can be repeatedly used.
Drawings
Fig. 1 is a schematic structural diagram of an apparatus for adjustably simulating EGR cooler clogging and leakage according to an embodiment of the present invention.
Fig. 2 is a flow chart of an electric valve control according to an embodiment of the present invention.
Description of the main reference numerals:
101-valve, 102-EGR cooler, 103-water flowmeter, 104-EGR cooler water inlet, 105-EGR cooler water outlet, 106-EGR cooler air inlet, 107-EGR cooler air outlet, 201-electric valve and 202-controller.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited by the following detailed description.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
The utility model relates to an embodiment's device series connection that adjustable simulation EGR cooler blockked up and leaked is in the EGR cooler pipeline of engine, and the device includes: a plurality of water flow meters, wherein one end of one water flow meter is connected with the EGR cooler pipeline; one end of one valve is connected with the other end of the water flow meter, and the valve is used for simulating and monitoring different EGR cooler flow rates in real time by controlling different valve opening degrees; wherein, the water flowmeter is respectively connected with the valve and the EGR cooler pipeline through rubber tubes or welded connection.
In one embodiment, as shown in fig. 1, the gas engine employs an EGR system, wherein the EGR cooler 102 takes water from the engine body, enters the EGR cooler 102 through a transition pipeline for heat exchange, and then flows out to the water outlet manifold through the water outlet 105 of the EGR cooler. The illustration omits the engine body and part of the pipeline connection, and mainly embodies the pipeline related to the EGR cooler. The device 100 capable of adjusting and simulating the blockage and leakage of the EGR cooler is arranged between the EGR cooler 102 and a water outlet pipe of a machine body, wherein one end of a water flow meter 103 is connected with a water inlet 104 of the EGR cooler, and the other end of a valve 101 is connected with a water outlet of the machine body. The valve 101 is a manual valve or an electric valve.
In one embodiment, as shown in fig. 2, when the valve is an electric valve 201, the electric valve 201 is connected to a computer or controller 202, the water flow meter 103 is used for inputting a real-time flow rate, and the computer or controller 202 outputs an instruction to adjust the opening of the electric valve 201 according to a target flow rate and a current flow rate, so as to realize the programmed control of the opening of the electric valve.
In one or more embodiments, the plurality of water flow meters have different ranges and the plurality of valves have different pipe diameters to accommodate different engines and are reusable.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (5)
1. An apparatus for adjustably simulating plugging and leakage in an EGR cooler, said apparatus being connected in series in an EGR cooler line of an engine, said apparatus comprising:
A plurality of water flow meters, wherein one end of one of the water flow meters is connected to the EGR cooler piping;
One end of one valve is connected with the other end of the water flow meter, and the valve is used for simulating and monitoring different EGR cooler flow rates in real time by controlling different valve opening degrees;
The water flow meter, the valve and the EGR cooler pipeline are connected through rubber pipes or welded.
2. The apparatus of claim 1, wherein the apparatus is disposed intermediate the EGR cooler and the body outlet pipe, wherein one end of the water flow meter is connected to the EGR cooler water inlet and the other end of the valve is connected to the body water outlet.
3. The device of claim 1, wherein the valve is a manual valve or an electric valve.
4. The apparatus of claim 3, wherein when the valve is an electric valve, the electric valve is connected to a computer or a controller, the water flow meter is used for inputting real-time flow, and the computer or the controller controls the opening of the electric valve to realize the opening program control of the electric valve.
5. The apparatus of claim 1 wherein said plurality of water flow meters have different ranges and said plurality of valves have different pipe diameters to accommodate different engines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922468918.XU CN211085687U (en) | 2019-12-31 | 2019-12-31 | Device capable of adjusting and simulating blockage and leakage of EGR cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922468918.XU CN211085687U (en) | 2019-12-31 | 2019-12-31 | Device capable of adjusting and simulating blockage and leakage of EGR cooler |
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| Publication Number | Publication Date |
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| CN211085687U true CN211085687U (en) | 2020-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922468918.XU Active CN211085687U (en) | 2019-12-31 | 2019-12-31 | Device capable of adjusting and simulating blockage and leakage of EGR cooler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111442929A (en) * | 2020-04-01 | 2020-07-24 | 广西玉柴机器股份有限公司 | Device capable of adjusting and simulating blockage and leakage of EGR cooler |
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2019
- 2019-12-31 CN CN201922468918.XU patent/CN211085687U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111442929A (en) * | 2020-04-01 | 2020-07-24 | 广西玉柴机器股份有限公司 | Device capable of adjusting and simulating blockage and leakage of EGR cooler |
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