Tester for fuel gas injection rail

Abstract

The utility model discloses a fuel gas injection rail tester, which comprises a shell, a pressure regulating valve, an electromagnetic valve, a gas flow meter and a surge flask, the shell is provided with a gas inlet interface, a gas outlet interface and a power supply interface, the pressure regulating valve, the electromagnetic valve, the gas flow meter and the surge flask are all arranged in the shell, and the surge flask is arranged in the shell. The inlet end of the pressure regulating valve is connected with the gas inlet connector through a gas conveying pipeline, the outlet end of the pressure regulating valve is connected with the gas inlet end of the electromagnetic valve through a gas conveying pipeline, and the gas inlet end of the gas flowmeter is connected with the gas outlet end of the electromagnetic valve through a gas conveying pipeline. The gas outlet end of the gas flow meter is connected with an inlet of the buffer bottle through a gas conveying pipeline, and an outlet of the buffer bottle is connected with the gas outlet connector through a gas conveying pipeline. According to the utility model, the flow of the fuel gas injection rail can be tested to ensure that the flow of the fuel gas injection rail is within a set range, so that the performance and the fuel economy of an automobile are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of test equipment, and particularly relates to a tester for a gas injection rail. Background Art

[0002] With the rapid growth of the number of automobiles, the problems of environmental pollution and shortage of oil resources are becoming increasingly serious. For this reason, countries around the world are actively carrying out research and development work on new energy vehicles. Among them, natural gas vehicles are being popularized and promoted worldwide due to their three characteristics of low emissions, inhibition of the greenhouse effect, and getting rid of dependence on oil. In China, a large number of fuel vehicles in urban buses and taxis in many cities have been converted or are being converted to compressed natural gas (CNG) or liquefied petroleum gas (LNG). With the rapid increase in the number of gas vehicles in China, it is also imperative to develop a gas heater that matches them.

[0003] In the electronic control injection system of a gas fuel engine, one of the most critical devices is the gas injector. In the application of a gas injection rail in a natural gas vehicle, its main function is to quantitatively inject the supplied gas according to the operating conditions. Specifically, the gas is stored in the rail and sprayed through the nozzles into the engine intake and exhaust pipes.

[0004] The flow rate of the gas injection rail has a very important impact on the vehicle. It directly affects the combustion efficiency and performance of the engine. If the flow rate of the gas injection rail is too large, it will cause too much fuel to enter the combustion chamber, which may lead to problems such as incomplete combustion, increased flue gas emissions, and power decline; on the contrary, if the flow rate is too small, it may result in insufficient combustion, insufficient power, and even cause engine failures. A suitable gas injection rail flow rate can ensure the normal and efficient operation of the engine and improve the performance and fuel economy of the vehicle.

[0005] Therefore, after the gas injection rail is produced, it is necessary to detect parameters such as the flow rate and resistance value of the nozzles to determine whether the nozzles meet the specified parameter requirements. Content of the Utility Model

[0006] To solve at least one technical problem of the existing technology, the utility model provides a tester for a gas injection rail.

[0007] To achieve the above-mentioned utility model purpose, the technical solution adopted by the present utility model is: A tester for a gas injection rail, including a housing, a pressure regulating valve, a solenoid valve, a gas flow meter, and a buffer bottle. An air inlet interface, an air outlet interface, and a power supply interface are provided on the housing. The pressure regulating valve, the solenoid valve, the gas flow meter, and the buffer bottle are all arranged inside the housing. The inlet end of the pressure regulating valve is connected to the air inlet interface through an air delivery pipeline, the outlet end of the pressure regulating valve is connected to the inlet end of the solenoid valve through an air delivery pipeline, the inlet end of the gas flow meter is connected to the outlet end of the solenoid valve through an air delivery pipeline, the outlet end of the gas flow meter is connected to the inlet of the buffer bottle through an air delivery pipeline, and the outlet of the buffer bottle is connected to the air outlet interface through an air delivery pipeline.

[0008] Further, the tester for the gas injection rail further includes a pressure gauge. A first installation port is provided on the front surface of the housing, and the pressure gauge is arranged in the first installation port. The pressure gauge is connected to the air delivery pipeline connected to the outlet end of the pressure regulating valve through a connecting branch pipe.

[0009] Further, the tester for the gas injection rail further includes a gas filter. The gas filter is arranged outside the housing, and the outlet end of the gas filter is connected to the air inlet interface through an air inlet hose.

[0010] Further, the pressure regulating valve has a pressure regulating knob. A knob installation hole is provided on the front surface of the housing, and the pressure regulating knob is arranged in the knob installation hole.

[0011] Further, the tester for the gas injection rail further includes a power switch. A switch hole is provided on the front surface of the housing, and the power switch is installed in the switch hole.

[0012] Further, the tester for the gas injection rail further includes a display screen. A second installation port is provided on the front surface of the housing, and the display screen is arranged in the second installation port.

[0013] Further, a handle is provided on the top of the housing.

[0014] Further, four feet are provided at the bottom of the housing, and the four feet are distributed in a rectangular shape at the bottom of the housing.

[0015] The beneficial effects of the present utility model are as follows:

[0016] The present utility model can test the flow rate of the gas injection rail to ensure that the flow rate of the gas injection rail is within the set range, thereby improving the performance and fuel economy of the vehicle. Description of the Drawings

[0017] Figure 1A perspective view of a tester for a gas injection rail of the present utility model;

[0018] Figure 2 A schematic diagram of the internal structure of a tester for a gas injection rail of the present utility model. Specific embodiments

[0019] In order to enable those skilled in the art of the present technology to better understand the solutions of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0020] It should be noted that the terms "first", "second", etc. in the description and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances for the embodiments of this application described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products, or devices.

[0021] In this application, the orientation or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. are based on the orientation or positional relationships shown in the accompanying drawings. These terms are mainly used to better describe the present utility model and its embodiments, and are not used to limit that the indicated devices, elements, or components must have a specific orientation, or be constructed and operated in a specific orientation.

[0022] Moreover, in addition to being able to represent orientation or positional relationships, some of the above-mentioned terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present utility model can be understood according to specific circumstances.

[0023] In addition, the terms "installed", "set up", "provided with", "connected", "linked", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there can be internal communication between two devices, components, or parts. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0024] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will describe this application in detail with reference to the drawings and in combination with the embodiments.

[0025] Refer to Figure 1 and Figure 2 The present utility model provides a tester for a gas injection rail, which includes a housing 1, a pressure regulating valve 2, an electromagnetic valve 3, a gas flow meter 4, and a buffer bottle 5. An air inlet interface 11, an air outlet interface 12, and a power supply interface 13 are provided on the housing 1. The pressure regulating valve 2, the electromagnetic valve 3, the gas flow meter 4, and the buffer bottle 5 are all arranged inside the housing 1. The inlet end of the pressure regulating valve 2 is connected to the air inlet interface 11 through a gas transmission pipeline, the outlet end of the pressure regulating valve 2 is connected to the inlet end of the electromagnetic valve 3 through a gas transmission pipeline, the inlet end of the gas flow meter 4 is connected to the outlet end of the electromagnetic valve 3 through a gas transmission pipeline, the outlet end of the gas flow meter 4 is connected to the inlet of the buffer bottle 5 through a gas transmission pipeline, and the outlet of the buffer bottle 5 is connected to the air outlet interface 12 through a gas transmission pipeline.

[0026] The housing 1 is rectangular, with a length of approximately 300 cm, a width of approximately 230 cm, and a height of approximately 240 cm. The tester of the present utility model is small in volume and convenient to carry to various working sites. A handle 15 is provided on the top of the housing 1, and four feet 16 are also provided at the bottom of the housing 1.

[0027] The housing 1 is formed by connecting multiple metal plates. The air inlet interface 11, the air outlet interface 12, and the power supply interface 13 are all fixed on the metal plate on the back of the housing 1. The gas flow meter 4 is fixed on the metal plate on the back of the housing 1 through a bracket 7. The bracket 7 is generally in a "U" shape, and the two free ends of the bracket 7 are fixed on the metal plate on the back of the housing 1 through bolts. The buffer bottle 5 and the electromagnetic valve 3 are fixed on the metal plate on the side of the housing 1 through bolts, and the pressure regulating valve 2 is fixed on the metal plate on the front of the housing 1.

[0028] Furthermore, the tester for the gas injection rail further includes a pressure gauge 6. A first installation port is provided on the metal plate on the front of the housing 1, and the pressure gauge 6 is arranged in the first installation port. The pressure gauge 6 is connected to the gas transmission pipeline connected to the outlet end of the pressure regulating valve 2 through a connecting branch pipe.

[0029] Furthermore, the pressure gauge 6 can be a digital display pressure gauge or a dial pressure gauge.

[0030] The pressure regulating valve 2 has a pressure regulating knob 21. A knob mounting hole is provided on the front surface of the housing 1. The pressure regulating knob 21 is disposed in the knob mounting hole. By rotating the pressure regulating knob 21, the position of the valve core inside the pressure regulating valve 2 is changed, so as to adjust the resistance when the fluid passes through the pressure regulating valve, and further adjust the pressure of the gas in the gas transmission pipeline.

[0031] The tester for the fuel injection rail further includes an AC / DC conversion device and a transformer. The AC / DC conversion device and the transformer supply power to the solenoid valve 3 and other electrical components. The AC / DC conversion device and the transformer are used to convert 220V AC power into low-voltage DC power of 12V, 24V, or 48V.

[0032] The tester for the fuel injection rail further includes a power switch 9. A switch hole is provided on the front surface of the housing 1. The power switch 9 is installed in the switch hole. The tester can be started with one key through the power switch 9.

[0033] Furthermore, the tester for the fuel injection rail further includes a gas filter. The gas filter is disposed outside the housing. The gas outlet end of the gas filter is connected to the intake interface 11 through an intake hose.

[0034] Furthermore, the tester for the fuel injection rail further includes a display screen 8. A second mounting port is provided on the front surface of the housing 1. The display screen 8 is disposed in the second mounting port and is connected to the storage battery through an electric wire.

[0035] Furthermore, the tester for the fuel injection rail further includes a plurality of nozzle signal output interfaces 14. The plurality of nozzle signal output interfaces 14 are fixed on the metal plate on the back surface of the housing 1.

[0036] The testing process of the tester of the present utility model is as follows: 1. Connect the gas filter to the gas source through a connecting hose; 2. Connect the gas outlet interface 12 to the fuel injection rail through a connecting pipe; 3. Start the tester through the power switch 9; 4. Read the flow value of the fuel injection rail on the display screen.

[0037] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to the above embodiments will be apparent to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to the above embodiments shown herein, but rather should be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A tester for a gas injection rail, characterized in that, It includes a housing (1), a pressure regulating valve (2), a solenoid valve (3), a gas flow meter (4) and a buffer bottle (5). An air inlet interface (11), an air outlet interface (12) and a power supply interface (13) are provided on the housing (1). The pressure regulating valve (2), the solenoid valve (3), the gas flow meter (4) and the buffer bottle (5) are all arranged inside the housing (1). The inlet end of the pressure regulating valve (2) is connected to the air inlet interface (11) through an air delivery pipeline. The outlet end of the pressure regulating valve (2) is connected to the inlet end of the solenoid valve (3) through an air delivery pipeline. The inlet end of the gas flow meter (4) is connected to the outlet end of the solenoid valve (3) through an air delivery pipeline. The outlet end of the gas flow meter (4) is connected to the inlet of the buffer bottle (5) through an air delivery pipeline. The outlet of the buffer bottle (5) is connected to the air outlet interface (12) through an air delivery pipeline.

2. The tester for the gas injection rail according to claim 1, wherein, The tester for the fuel injection rail further includes a pressure gauge (6). A first mounting opening is provided on the front surface of the housing (1). The pressure gauge (6) is configured in the first mounting opening. The pressure gauge (6) is connected to the air delivery pipeline connected to the outlet end of the pressure regulating valve (2) through a connecting branch pipe.

3. The tester for the gas injection rail according to claim 1, characterized in that, The tester for the fuel injection rail further includes a gas filter. The gas filter is arranged outside the housing. The outlet end of the gas filter is connected to the air inlet interface (11) through an air inlet hose.

4. The tester for a gas injection rail according to claim 1, characterized in that, The pressure regulating valve (2) has a pressure regulating knob (21). A knob mounting hole is provided on the front surface of the housing (1). The pressure regulating knob (21) is configured in the knob mounting hole.

5. The tester for a fuel injection rail according to claim 1, characterized in that, The tester for the fuel injection rail further includes a power switch (9). A switch hole is provided on the front surface of the housing (1). The power switch (9) is installed in the switch hole.

6. The tester for the gas injection rail according to claim 1, characterized in that, The tester for the fuel injection rail further includes a display screen (8). A second mounting opening is provided on the front surface of the housing (1). The display screen (8) is configured in the second mounting opening.

7. The tester for a gas injection rail according to claim 1, characterized in that, A handle (15) is provided on the top of the housing (1).

8. The tester for the gas injection rail according to claim 1, characterized in that, Four feet are provided at the bottom of the housing (1). The four feet are distributed in a rectangular shape at the bottom of the housing (1).

Images