Intake manifold leakage detection system

Abstract

The utility model discloses an intake manifold leakage detection system which is simple in structure and can realize rapid detection of the air tightness of a manifold. The system comprises an intake manifold, an exhaust manifold and an exhaust manifold, wherein the intake manifold comprises an intake port and an exhaust port; the sealing plate is used for sealing the air outlet; a pressure gauge; one end of the three-way pipe is provided with the pressure gauge, one end of the three-way pipe is communicated with the air inlet through a connecting piece, and the other end of the three-way pipe is connected with a pipeline used for being connected with inflation equipment; the valve is arranged on the pipeline to control the on-off of the pipeline; and the water tank is used for realizing detection of the intake manifold after water injection.

Description

Technical Field

[0001] The utility model relates to the technical field of manifold airtightness detection, in particular to an intake manifold leakage detection system. Background Art

[0002] During the combustion development test of gasoline engines, the intake manifold is generally made of plastic, which is molded into upper and lower shells, and then connected and fixed by rivets. The biggest drawback of this method is that it is prone to air leakage. However, the air volume of the intake manifold plays a decisive role in the combustion of gasoline engines. If the intake manifold leaks, the intake pressure will decrease, resulting in reduced intake capacity, reduced gasoline engine power, insufficient intake volume, etc., and will also cause increased carbon deposits.

[0003] Air tightness testing of the manifold is an important part of quality inspection. When the manifold is currently tested for air tightness, it is composed of a fixing component, a sealing component, a testing component, etc. During the test, the manifold is fixed with a fixing component, and then the cylinder drives the telescopic rod to drive the sealing plate to seal the manifold pipe mouth. After sealing, the manifold is inflated with an air pump, and the air pressure change in the manifold is observed after a certain period of time to achieve detection, such as the "Device for exhaust manifold air tightness detection" with application number 201520214314.1.

[0004] The above structure is not only complex, but also time-consuming to detect. Utility Model Content

[0005] The utility model aims to overcome the shortcomings of the prior art and provide an intake manifold leakage detection system which has a simple structure and can realize rapid detection of manifold air tightness.

[0006] The purpose of the utility model is achieved through the following technical solutions:

[0007] The utility model provides an intake manifold leakage detection system, comprising:

[0008] an intake manifold, the intake manifold comprising an air inlet and an air outlet;

[0009] A sealing plate, the sealing plate is used to seal the air outlet;

[0010] Pressure gauge;

[0011] A three-way pipe, one end of which is equipped with the pressure gauge, one end of which is connected to the air inlet through a connector, and one end of which is connected to a pipeline for connecting an inflatable device;

[0012] A valve, wherein the valve is arranged on the pipeline to control the on-off of the pipeline;

[0013] A water tank is used to detect the intake manifold after filling with water.

[0014] The utility model has the following advantages:

[0015] The utility model adopts a sealing plate and a valve to achieve the sealing of the intake manifold, and adopts a pressure gauge to detect the pressure in the intake manifold. When the air pressure in the intake manifold is charged to a value greater than a threshold, it can be placed in a water tank to check whether there is any leakage. It not only has a simple structure, but also can realize rapid detection of leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a structural schematic diagram of the intake manifold leakage detection system of the utility model;

[0018] Figure 2 Schematic diagram of the structure of the sealing plate. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0021] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features thereof may be combined with each other.

[0022] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0023] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, or the positions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In order to realize the rapid detection of the intake manifold, the utility model discloses an intake manifold leakage detection system. Specifically, Figure 1 As shown, the system includes an intake manifold 1, a sealing plate 2, a pressure gauge 104, a tee pipe 103, a valve 102 and a water tank, wherein the water tank is a conventional structure and is therefore not shown in the drawing.

[0026] The intake manifold 1 includes an air inlet and an air outlet 106. The sealing plate 2 is used to seal the air outlet. The three-way pipe 103 is a prior art, which has three ports connected to each other, one end of which is equipped with the pressure gauge, one end is connected to the air inlet through a connector 105, and one end is connected to a pipe 101 for connecting an inflatable device. A valve 102 is provided on the pipe 101 to control the on and off of the pipe 101. The water tank is used to detect the intake manifold 1 after water is filled.

[0027] With the above structure, when testing the tightness of the intake manifold, after the sealing plate is used to seal the intake manifold outlet 106, the connector 105 is used to connect with the three-way pipe, and the intake manifold and the connected sealing plate 2, pressure gauge 104, valve, pipeline 101, and connector 105 are placed in a water tank and are all placed below the water surface. Open the valve, connect the inflation device, inflate the intake manifold, observe the reading of the pressure gauge 104, and when the reading is greater than a threshold, close the valve and the inflation device, and observe whether there are bubbles constantly coming out of the intake manifold. If there are bubbles, it means that the manifold is leaking, and repair or replace the intake manifold with a new one; if there are no bubbles, it means that the intake manifold is not leaking, and continue to use it to ensure that there is no leakage during the test and to ensure the validity of the data during the gasoline engine development test.

[0028] The threshold of the detection air pressure can be set to about 2 bar.

[0029] The above system can not only quickly realize the air tightness detection of the intake manifold, but also quickly and effectively check the specific leakage location of the intake manifold, saving a lot of time for subsequent inspection and repair, and effectively avoiding air leakage during the development test, saving a lot of development costs for the project.

[0030] In order to facilitate the handling of the pipeline during testing, the pipeline 101 is a flexible pipeline, such as a polytetrafluoroethylene tube.

[0031] In order to facilitate disassembly, the sealing plate 2 is provided with screw holes 201 for fixing the intake manifold 1. The sealing plate 2 is preferably made of a stainless steel plate. The sealing plate 2 and the intake manifold 1 are detachably connected by bolts, which facilitates disassembly and enhances the airtightness of the air outlet. For example, Figure 2 As shown, two rows of screw holes 201 are provided on the sealing plate 2, wherein one row has five screw holes 201 and the other row has three screw holes 201, which can match the positions of the screw holes on the air outlet.

[0032] In order to further improve the air tightness of the air outlet seal, a sealing gasket is provided between the sealing plate 2 and the intake manifold 1. The sealing gasket can be a rubber gasket, and a hole position can be processed at a position corresponding to the screw hole 201.

[0033] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An intake manifold leak detection system, characterized in that: include: An intake manifold (1), the intake manifold (1) comprising an air inlet and an air outlet (106); A sealing plate (2), the sealing plate (2) being used to seal the air outlet; Pressure gauge (104); A three-way pipe (103), one end of which is equipped with the pressure gauge, one end of which is connected to the air inlet via a connector (105), and one end of which is connected to a pipe (101) for connecting to an inflatable device; a valve (102), the valve (102) being arranged on the pipeline (101) to control the on-off of the pipeline (101); A water tank, wherein the water tank is used to detect the intake manifold (1) after water is injected.

2. An intake manifold leak detection system according to claim 1, characterized in that: The sealing plate (2) is provided with screw holes (201) for fixing the intake manifold (1).

3. An intake manifold leak detection system according to claim 2, characterized in that: A sealing gasket is provided between the sealing plate (2) and the intake manifold (1).

4. The intake manifold leak detection system according to claim 1, characterized in that: The pipeline (101) is a flexible pipeline.

5. The intake manifold leak detection system according to claim 1, characterized in that: The pipeline (101) is a polytetrafluoroethylene tube.

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