Automobile tail pipe transition device for automobile exhaust emission test and automobile exhaust emission test system

Abstract

The utility model provides an automobile tail pipe transition device for automobile exhaust emission testing and an automobile exhaust emission testing system, and belongs to the technical field of automobile exhaust detection. The automobile tail pipe transition device for the automobile exhaust emission test comprises a metal transition pipe, a first sealing rubber pipe and a second sealing rubber pipe, one end of the metal transition pipe is an air inlet end, and the other end is an exhaust end; the air inlet end is connected with one end of the first sealing rubber pipe; and the exhaust end is connected with one end of the second sealing rubber pipe. Compared with a traditional silica gel transition connecting pipe, the transition pipe made of the metal material has the advantages that the problems of volatilization, decomposition, bubbling, carbonization and the like at high temperature are solved, additional gas and particulate matter are prevented from entering an emission analyzer, and therefore the accuracy of automobile emission test results is remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to automobile exhaust detection technical field, especially a kind of automobile tail pipe transition device and automobile exhaust emission test system of automobile exhaust emission test. BACKGROUND

[0002] With the improvement of environmental awareness and the increasingly stringent standards for automobile exhaust emissions of various countries, automobile exhaust emission test has become an important link in vehicle production, maintenance and environmental protection detection. Automobile exhaust emission test not only can evaluate the degree of automobile emission pollutants, but also can help manufacturers improve engine design to reduce harmful substance emissions. However, during the exhaust emission test, how to effectively guide the automobile exhaust into the analyzer becomes a key point in technology.

[0003] In the traditional automobile exhaust emission test method, a hose is often used to connect the automobile tail pipe and the analyzer. This connection method has certain defects, such as hose material aging and deformation, leading to poor sealing; and the hose has limited temperature resistance, which cannot adapt to the high temperature environment of automobile exhaust, which may affect the accuracy of test results. UTILITY MODEL CONTENT

[0004] To solve the above problems, the utility model provides a kind of automobile tail pipe transition device for automobile exhaust emission test, which has simple structure, good sealing and high temperature resistance, to ensure that automobile exhaust can be safely and accurately transmitted to the analyzer, thereby improving the efficiency and reliability of exhaust emission test.

[0005] In the first aspect, a kind of automobile tail pipe transition device for automobile exhaust emission test is provided, comprising: metal transition pipe, first sealing rubber tube and second sealing rubber tube;

[0006] One end of the metal transition pipe is the air inlet end, and the other end is the exhaust end;

[0007] The air inlet end is connected with one end of the first sealing rubber tube;

[0008] The exhaust end is connected with one end of the second sealing rubber tube.

[0009] Further, it further includes first pipe clamp and second pipe clamp;

[0010] One end of the first sealing rubber tube is sleeved on the air inlet end of the metal transition pipe, and the outside of the air inlet end where one end of the first sealing rubber tube is fixed is fixed by the first pipe clamp;

[0011] One end of the second sealing rubber tube is sleeved on the exhaust end of the metal transition pipe, and the outside of the exhaust end where one end of the second sealing rubber tube is fixed is fixed by the second pipe clamp.

[0012] Further, the metal transition pipe comprises a tailpipe connecting part, a transition part and an analyzer connecting part connected in sequence.

[0013] The air inlet end of the tailpipe connecting part is away from the transition part.

[0014] The air outlet end of the analyzer connecting part is away from the transition part.

[0015] Further, the metal transition pipe is a circular pipe.

[0016] Further, the pipe diameter of the air inlet end is smaller than that of the air outlet end.

[0017] Further, the metal transition pipe is made of stainless steel.

[0018] Further, the wall thickness of the metal transition pipe is 0.8mm-1mm.

[0019] In a second aspect, the utility model provides a tailpipe transition device for automobile exhaust emission test.

[0020] The collection pipe of the analyzer is connected with the air outlet end of the metal transition pipe.

[0021] Further, the collection pipe of the analyzer is inserted into the air outlet end of the metal transition pipe.

[0022] The other end of the second sealing rubber pipe is sleeved outside the collection pipe of the analyzer, and the other end of the second sealing rubber pipe is connected with the collection pipe of the analyzer through a third pipe clamp.

[0023] Further, the air inlet end of the metal transition pipe is inserted with a tailpipe.

[0024] The other end of the first sealing rubber pipe is sleeved outside the tailpipe, and the other end of the first sealing rubber pipe is connected with the tailpipe through a fourth pipe clamp.

[0025] The utility model has the following advantages or beneficial effects:

[0026] 1. The transition pipe made of metal material will not volatilize, decompose, bubble and carbonize at high temperature, compared with the traditional silica gel transition connecting pipe, avoiding additional gas and particulate matter entering the emission analyzer, thereby significantly improving the accuracy of automobile emission test results.

[0027] 2. By wrapping a layer of sealing rubber tube at the connection between the metal transition pipe and the automobile tail pipe and the analyzer collection pipe, and using a screwable stainless steel pipe clamp to seal and fix, the sealing of the entire system is ensured, preventing external air or other impurities from entering, further ensuring the purity and reliability of the test data. BRIEF DESCRIPTION OF DRAWINGS

[0028] The above and other features and advantages of the present application will become more apparent by describing in detail example embodiments thereof with reference to the attached drawings in which:

[0029] Figure 1 is a structural schematic diagram of a automobile tail pipe transition device for automobile exhaust emission test according to an example embodiment;

[0030] Figure 2 is a structural schematic diagram of a automobile exhaust emission test system according to an example embodiment.

[0031] In the drawings:

[0032] 1. Metal transition pipe, 2. First sealing rubber tube, 3. Second sealing rubber tube, 4. First pipe clamp, 5. Second pipe clamp, 6. Third pipe clamp, 7. Fourth pipe clamp, 8. Analyzer collection pipe, 9. Automobile tail pipe;

[0033] 11. Automobile tail pipe connection part, 12. Transition part, 13. Analyzer connection part. DETAILED DESCRIPTION

[0034] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments, however, can be implemented in many different forms and should not be construed as limited to the implementations set forth in this disclosure; rather, these implementations are provided so that this disclosure will be thorough and complete, and will fully convey the inventive concept of example embodiments to those skilled in the art. Like reference numerals refer to like elements throughout the figures, and thus a detailed description of the same will be omitted.

[0035] The terms "one", "a", "an", "the", and "said" are used to indicate the existence of one or more than one element / portion / etc.; the terms "include" and "has" are used to indicate an open inclusive meaning and that additional elements / portion / etc. can be present in addition to the listed elements / portion / etc.

[0036] Figure 1 is a structural schematic diagram of a automobile tail pipe transition device for automobile exhaust emission test according to an example embodiment. The above schematic diagram is only to show the structural relationship related to the invention point, and not as the actual proportion of the actual product.

[0037] As Figure 1As shown, a car tail pipe transition device for car exhaust emission test, comprising: a metal transition pipe 1, a first sealing rubber pipe 2 and a second sealing rubber pipe 3; one end of the metal transition pipe 1 is an air inlet end, and the other end is an air outlet end; the air inlet end is connected with one end of the first sealing rubber pipe 2; the air outlet end is connected with one end of the second sealing rubber pipe 3.

[0038] The metal transition pipe 1 is made of stainless steel material, has good high temperature resistance and mechanical strength, and can withstand the high temperature (up to 800℃) of the car exhaust.

[0039] The metal transition pipe 1 is a circular tube, which is smooth inside, reducing the resistance of gas flow.

[0040] The wall thickness of the metal transition pipe 1 is 0.8mm to 1mm, which can ensure sufficient mechanical strength and will not increase unnecessary weight.

[0041] The first sealing rubber pipe 2 is made of high-temperature-resistant and corrosion-resistant rubber material, which can maintain good elasticity and sealing performance in high-temperature environment. One end of the first sealing rubber pipe 2 is sleeved on the air inlet end of the metal transition pipe 1 and fixed by the first pipe clamp 4. The first pipe clamp 4 is a screwable stainless steel pipe clamp, which ensures the sealing of the connection. The first sealing rubber pipe 2 provides sealing between the metal transition pipe 1 and the car tail pipe 9, prevents external air or other impurities from entering, and ensures the purity of the test data.

[0042] The second sealing rubber pipe 3 is also made of high-temperature-resistant and corrosion-resistant rubber material, which can maintain good elasticity and sealing performance in high-temperature environment. One end of the second sealing rubber pipe 3 is sleeved on the air outlet end of the metal transition pipe 1 and fixed by the second pipe clamp 5. The second pipe clamp 5 is a screwable stainless steel pipe clamp, which ensures the sealing of the connection. The second sealing rubber pipe 3 provides sealing between the metal transition pipe 1 and the collection pipe 8 of the analyzer, prevents external air or other impurities from entering, and ensures the purity of the test data.

[0043] The car tail pipe transition device of the utility model adopts the metal transition pipe 1 of stainless steel material and the sealing rubber pipe of high temperature resistance, not only solves the problems such as volatilization and decomposition of traditional silica gel pipe under high temperature, but also provides good sealing performance and wide applicability. The device has simple structure, is easy to install and maintain, and can significantly improve the accuracy and reliability of the car exhaust emission test.

[0044] In one embodiment, the metal transition pipe 1 comprises a car tail pipe connecting part 11, a transition part 12 and an analyzer connecting part 13 connected in sequence; one end of the car tail pipe connecting part 11 away from the transition part 12 is an air inlet end; one end of the analyzer connecting part 13 away from the transition part 12 is an air outlet end.

[0045] The metal transition pipe 1 includes three main parts: the automobile tail pipe connecting part 11, the transition part 12, and the analyzer connecting part 13. These three parts are connected in sequence to form a complete transition pipe.

[0046] The automobile tail pipe connecting part 11 is located at one end of the metal transition pipe 1, away from the transition part 12. This part is mainly used to connect with the automobile tail pipe 9, ensuring that the exhaust gas can smoothly enter the transition pipe. The diameter of the automobile tail pipe connecting part 11 is relatively small, usually matching the outer diameter of the automobile tail pipe 9, to ensure good sealing.

[0047] The transition part 12 is located between the automobile tail pipe connecting part 11 and the analyzer connecting part 13. The main function of the transition part 12 is to achieve smooth transition from the automobile tail pipe connecting part 11 to the analyzer connecting part 13, ensuring smooth gas flow. The diameter of the transition part 12 gradually increases, gradually transitioning from the diameter of the automobile tail pipe connecting part 11 to the diameter of the analyzer connecting part 13.

[0048] The analyzer connecting part 13 is located at the other end of the metal transition pipe 1, away from the transition part 12. This part is mainly used to connect with the intake pipe of the emission analyzer, ensuring that the exhaust gas can smoothly enter the analyzer. The diameter of the analyzer connecting part 13 is relatively large, usually matching the outer diameter of the analyzer intake pipe, to ensure good sealing.

[0049] The above-mentioned embodiments have at least the following beneficial effects:

[0050] 1. Improve the accuracy of test results

[0051] Prevent interference of additional gas and particulate matter: The metal transition pipe 1 is made of stainless steel material, which will not volatilize, decompose, bubble and carbonize at high temperature, avoiding the entry of additional gas and particulate matter into the emission analyzer, thereby significantly improving the accuracy of the test results of automobile exhaust.

[0052] Good sealing: By using sealing rubber tubes and stainless steel tube clamps at the connection between the metal transition pipe 1 and the automobile tail pipe 9 and the collection pipe 8 of the analyzer, the sealing of the connection is ensured, preventing external air or other impurities from entering, further ensuring the purity and reliability of the test data.

[0053] 2. Prolong the service life and reduce the test cost

[0054] High temperature resistance: The metal transition pipe 1 can withstand high temperatures up to 800°C, and will not age and deform at high temperatures like traditional silicone tubes, so it has a longer service life, reducing the need for frequent replacement of connecting pipes and significantly reducing test costs.

[0055] Easy maintenance: The durability and high temperature resistance of the metal transition pipe 1 make its maintenance more convenient, reducing the frequency and cost of maintenance.

[0056] 3. Enhanced sealing performance at the connection

[0057] Multi-layer sealing design: By using a sealing rubber tube and a stainless steel tube clamp at the connection between the metal transition pipe 1 and the automobile tail pipe 9 and the collection pipe 8 of the analyzer, a multi-layer sealing structure is formed, ensuring the sealing of the connection, preventing gas leakage, and improving the overall stability of the system.

[0058] High adaptability: The combination design of the sealing rubber tube and the stainless steel tube clamp can adapt to different diameters of the automobile tail pipe 9 and the collection pipe 8 of the analyzer, with strong universality and adaptability.

[0059] 4. Wide applicability

[0060] Strong compatibility: The automobile tail pipe connection part 11 and the analyzer connection part 13 of the metal transition pipe 1 are respectively designed to match the outer diameter of the automobile tail pipe 9 and the collection pipe 8 of the analyzer, which can adapt to different vehicle models and different specifications of analyzers, with wide applicability.

[0061] Simple structure: The metal transition pipe 1 has a simple structure, which is easy to process and does not require complex molds and processes, suitable for large-scale production and application.

[0062] 5. Easy installation and maintenance

[0063] Easy installation: The connection method of the metal transition pipe 1 is simple, which can be completed by inserting and clamping, with simple and fast operation.

[0064] Easy maintenance: If replacement or repair is needed, the tube clamp can be loosened to easily disassemble and reassemble, making maintenance easy.

[0065] Figure 2 is a structural schematic diagram of a vehicle exhaust emission test system according to an exemplary embodiment. The above schematic diagram is only to show the structural relationship related to the invention point, and not as the actual proportion of the actual product.

[0066] As shown in Figure 2 , a vehicle exhaust emission test system includes an analyzer and a vehicle tail pipe transition device for vehicle exhaust emission test as described in the above embodiment; the collection pipe 8 of the analyzer is connected with the exhaust end of the metal transition pipe 1.

[0067] The analyzer is a device for collecting and analyzing vehicle exhaust, and its main function is to measure the concentration of various pollutants in exhaust gas, such as THC, CO, NOX, N2O, NMHC, PM, PN, etc.

[0068] The collection tube 8 of the analyzer is inserted into the exhaust end of the metal transition pipe 1; the other end of the second sealing rubber pipe 3 is sleeved outside the collection tube 8 of the analyzer, and the other end of the second sealing rubber pipe 3 is connected with the collection tube 8 of the analyzer through the third pipe clamp 6.

[0069] The collection tube 8 of the analyzer is usually made of high-temperature-resistant and corrosion-resistant materials and can withstand the impact of high-temperature exhaust gas. The collection tube 8 of the analyzer is inserted into the exhaust end of the metal transition pipe 1, and the other end of the second sealing rubber pipe 3 is sleeved outside the collection tube 8 of the analyzer and fixed through the third pipe clamp 6, thereby ensuring the sealing of the connection.

[0070] The other end of the first sealing rubber pipe 2 is sleeved outside the automobile tail pipe 9, and the other end of the first sealing rubber pipe 2 is connected with the automobile tail pipe 9 through the fourth pipe clamp 7.

[0071] The other end of the first sealing rubber pipe 2 is sleeved outside the automobile tail pipe 9, and the other end of the first sealing rubber pipe 2 is connected with the automobile tail pipe 9 through the fourth pipe clamp 7.

[0072] The connection steps of the collection tube 8 of the analyzer and the automobile tail pipe 9 with the metal transition pipe 1 are as follows:

[0073] 1. Connection of the collection tube 8 of the analyzer

[0074] Step 1: Insert the collection tube 8 of the analyzer into the exhaust end of the metal transition pipe 1 to ensure firm insertion.

[0075] Step 2: The other end of the second sealing rubber pipe 3 is sleeved outside the collection tube 8 of the analyzer to ensure that the rubber pipe completely covers the connection.

[0076] Step 3: The other end of the second sealing rubber pipe 3 is fixed with the collection tube 8 of the analyzer by using the third pipe clamp 6 to ensure the sealing of the connection. Tighten the pipe clamp to make it firm and airtight.

[0077] 2. Connection of the automobile tail pipe 9

[0078] Step 1: Insert the intake end of the metal transition pipe 1 into the automobile tail pipe 9 to ensure firm insertion.

[0079] Step 2: The other end of the first sealing rubber pipe 2 is sleeved outside the automobile tail pipe 9 to ensure that the rubber pipe completely covers the connection.

[0080] Step 3: The other end of the first sealing rubber pipe 2 is fixed with the automobile tail pipe 9 by using the fourth pipe clamp 7 to ensure the sealing of the connection. Tighten the pipe clamp to make it firm and airtight.

[0081] Through the above steps, it can be ensured that the connection between the collection pipe 8 of the analyzer and the automobile tail pipe 9 and the metal transition pipe 1 is firm and sealed, so as to ensure the accuracy and reliability of the automobile exhaust emission test.

[0082] In the embodiments of the present application, the term "a plurality of" refers to two or more, unless otherwise explicitly limited. The terms "mounting", "connecting", "fixing" and the like should be understood in a broad sense, for example, "connecting" can be fixed connection, can also be detachable connection, or integrally connected. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0083] In the description of the embodiments of the present application, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, therefore, it cannot be understood as a limitation on the embodiments of the present application.

[0084] In the description of the present application, the description of the terms "one embodiment", "one preferred embodiment" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0085] The above is only the preferred embodiment of the present application, and is not intended to limit the embodiments of the present application. For those skilled in the art, the embodiments of the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the embodiments of the present application shall be included in the protection scope of the embodiments of the present application.

Claims

1. A car tailpipe transition device for car exhaust emission testing, characterized in that, The utility model relates to a kind of automobile tailpipe transition device for automobile exhaust emission test, including: Metal transition pipe (1), first sealing rubber pipe (2) and second sealing rubber pipe (3); One end of the metal transition pipe (1) is the air inlet end, and the other end is the exhaust end; The air inlet end is connected with one end of the first sealing rubber pipe (2); The exhaust end is connected with one end of the second sealing rubber pipe (3).

2. The automobile tailpipe transition device for automobile exhaust emission test according to claim 1, characterized in that, It also includes first pipe clamp (4) and second pipe clamp (5); One end of the first sealing rubber pipe (2) is sleeved on the air inlet end of the metal transition pipe (1), and the outside of the air inlet end where one end of the first sealing rubber pipe (2) is fixed is fixed by the first pipe clamp (4); One end of the second sealing rubber pipe (3) is sleeved on the exhaust end of the metal transition pipe (1), and the outside of the exhaust end where one end of the second sealing rubber pipe (3) is fixed is fixed by the second pipe clamp (5).

3. The automobile tailpipe transition device for automobile exhaust emission test according to claim 1, characterized in that, The metal transition pipe (1) includes automobile tailpipe connecting part (11), transition part (12) and analyzer connecting part (13) connected in turn; The air inlet end is located at one end of the automobile tailpipe connecting part (11) away from the transition part (12); The exhaust end is located at one end of the analyzer connecting part (13) away from the transition part (12).

4. The automobile tailpipe transition device for automobile exhaust emission test according to claim 1, characterized in that, The metal transition pipe (1) is a circular pipe.

5. The automobile tailpipe transition device for automobile exhaust emission test according to claim 4, characterized in that, The pipe diameter of the air inlet end is smaller than that of the exhaust end.

6. The automobile tailpipe transition device for automobile exhaust emission testing of claim 4, wherein, The metal transition pipe (1) is made of stainless steel.

7. The automobile tailpipe transition device for automobile exhaust emission testing of claim 4, wherein, The wall thickness of the metal transition pipe (1) is 0.8mm-1mm.

8. An automotive exhaust emission testing system characterized by, An analyzer and a kind of automobile tailpipe transition device for automobile exhaust emission test according to any one of claims 1 to 7 are included; The collection pipe (8) of the analyzer is connected with the exhaust end of the metal transition pipe (1).

9. The system for testing exhaust emissions of an automobile as claimed in claim 8 wherein, The collection pipe (8) of the analyzer is inserted into the exhaust end of the metal transition pipe (1); The other end of the second sealing rubber pipe (3) is sleeved outside the collection pipe (8) of the analyzer, and the other end of the second sealing rubber pipe (3) is connected with the collection pipe (8) of the analyzer by the third pipe clamp (6).

10. The system for testing exhaust emissions of an automobile as claimed in claim 8 wherein, The automobile tailpipe (9) is inserted into the air inlet end of the metal transition pipe (1); The other end of the first sealing rubber pipe (2) is sleeved outside the automobile tailpipe (9), and the other end of the first sealing rubber pipe (2) is connected with the automobile tailpipe (9) by the fourth pipe clamp (7).

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