CN217558438U - Automatic switching device for test gas pipeline of engine EGR system - Google Patents
Automatic switching device for test gas pipeline of engine EGR system Download PDFInfo
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- CN217558438U CN217558438U CN202221416861.4U CN202221416861U CN217558438U CN 217558438 U CN217558438 U CN 217558438U CN 202221416861 U CN202221416861 U CN 202221416861U CN 217558438 U CN217558438 U CN 217558438U
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Abstract
The utility model discloses a be used for experimental gas pipeline automatic switching control equipment of engine EGR system, the device includes CO 2 The device comprises a concentration detection device, an automatic gas pipeline switching device and an upper computer, wherein the automatic gas pipeline switching device is connected with the gas inlet end of a test gas pipeline of an engine EGR system through a pipeline 1; the gas pipeline automatic switching device is connected with the exhaust end of a test gas pipeline of an engine EGR system through a pipeline 2; an EGR valve is arranged between the test gas pipeline inlet end and the test gas pipeline exhaust end; the CO is 2 The concentration detection device is connected with the automatic switching device of the gas pipeline; the upper computer and the gasThe pipeline automatic switching device is connected. The device is used for calibrating the engine EGR system, and the calibration efficiency of the EGR system is improved through automatic switching of the test gas pipeline, so that the time and energy wasted by switching of the test gas pipeline are reduced, and the product development speed is accelerated.
Description
Technical Field
The utility model relates to a pipeline automatic switching control equipment, concretely relates to be used for experimental gas pipeline automatic switching control equipment of engine EGR system.
Background
With the rapid development of the automobile industry and the advocation of the automobile energy-saving concept, the traditional power vehicle is also continuously updated for improving the heat efficiency and reducing the emission of pollutants, and the EGR technology basically becomes a novel engine standard technology. EGR technique can improve the temperature of admitting air on the one hand and has better warm-up effect to cold quick-witted engine start-up, and this has higher practical value to the vehicle of riding instead of walk in the city, and on the other hand EGR technique can effectual reduction NO again X The discharge of pollutants improves the environmental protection level. As an engine development enterprise, how to calibrate the EGR system and how to manage the EGR rate is the most important factor in engine calibration.
Disclosure of Invention
The above-mentioned problem to prior art exists, the utility model provides a be used for experimental gas pipeline automatic switching control equipment of engine EGR system, the device can realize the experimental gas pipeline automatic switching of engine EGR system.
The utility model aims at realizing through the following technical scheme:
a gas pipeline automatic switching device for engine EGR system test comprises CO 2 Concentration detection device, gas line automatic switching control equipment, host computer, wherein:
the gas pipeline automatic switching device is connected with the gas inlet end of a test gas pipeline of an engine EGR system through a pipeline 1;
the gas pipeline automatic switching device is connected with the exhaust end of a test gas pipeline of an engine EGR system through a pipeline 2;
an EGR valve is arranged between the test gas pipeline gas inlet end and the test gas pipeline gas outlet end;
the CO is 2 The concentration detection device is connected with the automatic switching device of the gas pipeline;
the upper computer is connected with the automatic switching device of the gas pipeline and is used for controlling the automatic switching of the gas pipeline between the pipeline 1 and the pipeline 2.
Compared with the prior art, the utility model has the advantages of as follows:
the device is mainly used for calibrating the EGR system of the engine, the calibration efficiency of the EGR system is improved through automatic switching of the test gas pipeline, the time and energy wasted by switching of the test gas pipeline are reduced, and the product development speed is accelerated.
Drawings
FIG. 1 is an experimental schematic diagram of an automatic switching device for a test gas pipeline of an engine EGR system;
FIG. 2 is a schematic structural diagram of an automatic switching device for gas pipelines;
in the figure, 1-CO 2 The device comprises a concentration detection device, a 2-gas pipeline automatic switching device, a 3-upper computer, a 4-test gas pipeline air inlet end, a 5-test gas pipeline exhaust end, a 6-engine EGR system, a 7-EGR valve, an 8-air inlet, a 9-gas on-off valve, a 10-gas tee joint, an 11-air outlet, a 12-control circuit, a 13-relay and a 14-timing trigger.
Detailed Description
The technical solution of the present invention is further described below with reference to the accompanying drawings, but not limited thereto, and all modifications or equivalent replacements of the technical solution of the present invention are included in the protection scope of the present invention without departing from the spirit and scope of the technical solution of the present invention.
The utility model provides a be used for experimental gas pipeline automatic switching control equipment of engine EGR system, as shown in figure 1, the device includes CO 2 Concentration detection device 1, gas line automatic switching control equipment 2, host computer 3, wherein:
the gas pipeline automatic switching device 2 is connected with a test gas pipeline air inlet end 4 of an engine EGR system through a pipeline 1;
the gas pipeline automatic switching device 2 is connected with a test gas pipeline exhaust end 5 of an engine EGR system through a pipeline 2;
an EGR valve 7 is arranged between the test gas pipeline inlet end 4 and the test gas pipeline exhaust end 5;
the CO is 2 The concentration detection device 1 is connected with the gas pipeline automatic switching device 2;
the upper computer 3 is connected with the gas pipeline automatic switching device 2 and is used for controlling the automatic switching of the gas pipeline between the pipeline 1 and the pipeline 2.
As shown in fig. 2, the gas pipeline automatic switching device 2 is composed of a gas inlet 8, a gas on-off valve 9, a gas tee 10, a gas outlet 11, a control circuit 12, a relay 13 and a timing trigger 14, wherein:
the air inlet comprises a pipeline 1 air inlet and a pipeline 2 air inlet;
the gas on-off valve 9 comprises a pipeline 1 gas on-off valve and a pipeline 2 gas on-off valve;
one end of the air inlet of the pipeline 1 is connected with the pipeline 1, and the other end of the air inlet of the pipeline 1 is connected with one end of the gas on-off valve of the pipeline 1;
one end of the air inlet of the pipeline 2 is connected with the pipeline 2, and the other end of the air inlet of the pipeline 2 is connected with one end of the gas on-off valve of the pipeline 2;
the gas tee 10 is respectively connected with the other end of the gas on-off valve of the pipeline 1, the other end of the gas on-off valve of the pipeline 2 and one end of the gas outlet 11;
the other end of the gas outlet 11 is connected with CO 2 The concentration detection device 1 is connected;
the pipeline 1 gas on-off valve and the pipeline 2 gas on-off valve are connected with a relay 13 through a control circuit 12;
the relay 13 is connected with a timing trigger 14;
the timing trigger 14 is connected with the upper computer 3.
The working principle of the automatic test gas pipeline switching device is as follows:
the EGR valve is opened to make a small amount of waste gas enter the air inlet branch pipe and enter the combustion chamber together with combustible mixture, and CO in the part of gas 2 The concentration is called C CO2 in CO in the total exhaust gas 2 The concentration is named as C CO2 Total ，C CO2 in /C CO2 Total = EGR rate. Linking CO 2 Concentration detection device and upper computer for measuring CO at air inlet end 2 When the concentration is carried out, the upper computer controls the automatic switching device 2 of the gas pipeline to realize the automatic switching of the gas pipeline to the pipeline 1, and then CO is used for controlling the automatic switching device to realize the automatic switching of the gas pipeline to the pipeline 1 2 Concentration detection device detects C CO2 in Measuring CO at the exhaust end 2 The gas pipeline is switched to the pipeline 2 during concentration, so that C can be quickly detected CO2 Total 。
The utility model discloses utilize host computer control gas pipeline automatic switching control equipment automatic switching test gas pipeline, make CO 2 The concentration detection device can quickly detect C CO2 in And C CO2 Total Therefore, the calibration efficiency of the EGR system is improved.
Claims (2)
1. Automatic switching device for test gas pipeline of engine EGR system, characterized in that the device comprises CO 2 Concentration detection device, gas line automatic switching control equipment, host computer, wherein:
the gas pipeline automatic switching device is connected with the gas inlet end of a test gas pipeline of an engine EGR system through a pipeline 1;
the gas pipeline automatic switching device is connected with the exhaust end of a test gas pipeline of an engine EGR system through a pipeline 2;
an EGR valve is arranged between the test gas pipeline inlet end and the test gas pipeline exhaust end;
the CO is 2 The concentration detection device is connected with the automatic switching device of the gas pipeline;
the upper computer is connected with the automatic switching device of the gas pipeline.
2. The automatic switching device for the test gas pipeline of the engine EGR system according to claim 1, wherein the automatic switching device for the gas pipeline comprises a gas inlet, a gas on-off valve, a gas tee, a gas outlet, a control circuit, a relay and a timing trigger, wherein:
the air inlet comprises a pipeline 1 air inlet and a pipeline 2 air inlet;
the gas on-off valve (9) comprises a pipeline 1 gas on-off valve and a pipeline 2 gas on-off valve;
one end of the air inlet of the pipeline 1 is connected with the pipeline 1, and the other end of the air inlet of the pipeline 1 is connected with one end of the gas on-off valve of the pipeline 1;
one end of the gas inlet of the pipeline 2 is connected with the pipeline 2, and the other end of the gas inlet of the pipeline 2 is connected with one end of the gas on-off valve of the pipeline 2;
the gas tee is respectively connected with the other end of the gas on-off valve of the pipeline 1, the other end of the gas on-off valve of the pipeline 2 and one end of the gas outlet;
the other end of the gas outlet is connected with CO 2 The concentration detection device is connected;
the pipeline 1 gas on-off valve and the pipeline 2 gas on-off valve are connected with the relay through a control circuit;
the relay is connected with the timing trigger;
the timing trigger is connected with the upper computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221416861.4U CN217558438U (en) | 2022-06-08 | 2022-06-08 | Automatic switching device for test gas pipeline of engine EGR system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221416861.4U CN217558438U (en) | 2022-06-08 | 2022-06-08 | Automatic switching device for test gas pipeline of engine EGR system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217558438U true CN217558438U (en) | 2022-10-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221416861.4U Active CN217558438U (en) | 2022-06-08 | 2022-06-08 | Automatic switching device for test gas pipeline of engine EGR system |
Country Status (1)
| Country | Link |
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| CN (1) | CN217558438U (en) |
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2022
- 2022-06-08 CN CN202221416861.4U patent/CN217558438U/en active Active
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