Fuel gas electronic control valve and engine fuel gas control system

Abstract

The utility model provides a fuel gas electronic control valve and an engine fuel gas control system. The fuel gas electronic control valve comprises a valve body, a valve element and a valve element, the gas inlet pipe is arranged on the valve body and is communicated with an external gas pipeline; the switch electromagnetic valve is connected with the air inlet pipe; the gas inlet channel is arranged in the valve body, one end of the gas inlet channel is communicated with the gas inlet pipe, the other end of the gas inlet channel is communicated with the gas outlet pipe, and the gas inlet channel is provided with at least one flow electromagnetic valve used for controlling the amount of gas flowing into the gas outlet pipe; when the switch electromagnetic valve is opened, fuel gas enters the gas inlet channel through the gas inlet pipe and flows out of the gas outlet pipe. According to the fuel gas electronic control valve, the switch electromagnetic valve, the flow electromagnetic valve and the valve body are integrally installed, and the fuel gas electronic control valve is more compact in structure.

Description

Technical Field

[0001] The utility model relates to the technical field of gas control valves, in particular to a gas electronic control valve and an engine gas control system. Background Art

[0002] Currently used electronic gas control valves for general gas applications use separate mounting methods for the on / off solenoid valve and the flow solenoid valve, with hoses connecting the valves. This leads to excessive piping and high costs. The flow path from the inlet to the outlet is not designed properly, which can easily cause output flow deviations when two flow solenoid valves are installed. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a gas electronic control valve, which solves the problem of multiple intermediate pipelines and high cost caused by split installation by integrally installing the switch solenoid valve and the flow solenoid valve with the valve body.

[0004] To achieve the above-mentioned objectives, the utility model provides, on the one hand, a gas electronic control valve, comprising: a valve body; an air inlet pipe, arranged on the valve body and connected to an external gas pipeline; a switch solenoid valve, connected to the air inlet pipe; an air inlet channel, arranged in the valve body, one end of which is connected to the air inlet pipe and the other end of which is connected to the air outlet pipe, the air inlet channel being provided with at least one flow solenoid valve for controlling the amount of gas flowing into the air outlet pipe; when the switch solenoid valve is opened, the gas enters the air inlet channel through the air inlet pipe and flows out from the air outlet pipe.

[0005] Furthermore, each of the flow solenoid valves is connected to an air injection pipe, and the air injection pipe is connected to the air outlet pipe.

[0006] Preferably, the air intake channel includes a first air channel, a second air channel and a third air channel, wherein: one end of the first air channel is connected to the air intake pipe, and the other end is connected to the second air channel; the second air channel is connected to the third air channel through the jet pipe, and the third air channel is connected to the air outlet pipe.

[0007] Preferably, the first air channel is connected to the middle of the second air channel.

[0008] Preferably, the at least one flow solenoid valve includes a first flow solenoid valve and a second flow solenoid valve; the first flow solenoid valve and the second flow solenoid valve are arranged on both sides of the intake pipe; the first flow solenoid valve is connected to the first jet pipe, and the second flow solenoid valve is connected to the second jet pipe, and the jet pipe includes the first jet pipe and the second jet pipe; the air inlet ends of the first jet pipe and the second jet pipe are respectively connected to the positions near the two ends of the second air channel, and the air outlet ends of the first jet pipe and the second jet pipe are respectively connected to the positions near the two ends of the third air channel, and the middle of the third air channel is connected to the air outlet pipe.

[0009] Preferably, the first air channel is vertically connected to the middle of the second air channel, and the second air channel is parallel to the third air channel.

[0010] Furthermore, the switch solenoid valve is provided with a sealing gasket, and when the switch solenoid valve is energized, the sealing gasket opens.

[0011] Furthermore, the flow solenoid valve is electrically connected to an electronic control unit.

[0012] Furthermore, plugs are press-fitted at the connections between the first air duct, the second air duct and the third air duct and the outside to isolate them from the outside atmosphere.

[0013] On the other hand, the present invention also provides an engine gas control system, which is equipped with the above-mentioned gas electronic control valve, and the gas outlet pipe is connected to the engine's air intake system.

[0014] From the above scheme, it can be seen that the advantages of the present invention are:

[0015] The utility model integrates the switch solenoid valve and the flow solenoid valve with the valve body, thereby providing a gas electronic control valve with a more compact structure.

[0016] When the utility model is in use, the gas enters the first air passage through the air inlet pipe, is ventilated to the jet pipes on both sides from the middle of the second air passage, and is then transported to the intake system of the engine through the third air passage and the air outlet pipe. The amount of gas entering the engine is controlled by two flow solenoid valves, providing a gas electronic control valve with a more stable flow rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front view of the gas electronic control valve of the present utility model;

[0018] Figure 2 This is a right side view of the gas electronic control valve of the present utility model;

[0019] Figure 3 This is a left side view of the gas electronic control valve of the present utility model;

[0020] Figure 4 This is a bottom view of the gas electronic control valve of the present utility model;

[0021] Figure 5 This is a top view of the gas electronic control valve of the present utility model;

[0022] Figure 6 for Figure 3 AA cross-sectional view;

[0023] Figure 7 for Figure 1 CC cross-sectional view;

[0024] Figure 8 for Figure 1 BB cross-sectional view;

[0025] Wherein, the reference numerals:

[0026] 100-Gas electronic control valve;

[0027] 1-valve body;

[0028] 2-intake pipe;

[0029] 3- Switch solenoid valve;

[0030] 30-sealing gasket;

[0031] 5- Exhaust pipe;

[0032] 6-Intake channel;

[0033] 60-first airway;

[0034] 61-second airway;

[0035] 62-Third airway

[0036] 7-Flow solenoid valve;

[0037] 70-first flow solenoid valve;

[0038] 71-second flow solenoid valve;

[0039] 700,710-sealing gasket;

[0040] 8-jet pipe;

[0041] 80-first jet pipe;

[0042] 81-second jet pipe;

[0043] 9-plug;

[0044] 10-Gas pressure sensor. DETAILED DESCRIPTION

[0045] The technical solution of the present invention is described in detail below with reference to the accompanying drawings and specific embodiments to further understand the purpose, solution and effect of the present invention, but it is not intended to limit the scope of protection of the claims attached to the present invention.

[0046] References in the specification to "an embodiment," "another embodiment," "this embodiment," etc., indicate that the described embodiment may include specific features, structures, or characteristics, but not every embodiment must include these specific features, structures, or characteristics. Furthermore, such references do not necessarily refer to the same embodiment. Furthermore, when specific features, structures, or characteristics are described in conjunction with an embodiment, whether or not explicitly described, it is understood that incorporating such features, structures, or characteristics into other embodiments is within the knowledge of those skilled in the art.

[0047] Certain words are used in the specification and subsequent claims to refer to specific components or parts. It should be understood by those skilled in the art that technical users or manufacturers may refer to the same component or part with different nouns or terms. This specification and claims do not distinguish components or parts based on differences in name, but rather on differences in the functions of the components or parts. The words "include" and "comprising" mentioned throughout the specification and claims are open-ended terms and should be interpreted as "including but not limited to". In addition, the word "connect" herein includes any direct and indirect electrical connection means. Indirect electrical connection means include connection through other devices.

[0048] It should be noted that, in the description of the present invention, the terms "vertical", "parallel", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship or parameters, etc. are all based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description content. They do not indicate or imply that the device or element referred to must have a specific orientation, specific size, or be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the present invention.

[0049] Reference Figures 1 to 8 As shown, Figure 1 A front view of a gas electronic control valve 100 provided in an embodiment of the present utility model; Figure 2 It is a right side view of the gas electronic control valve 100; Figure 3 It is a left side view of the gas electronic control valve 100; Figure 4 It is a bottom view of the gas electronic control valve 100; Figure 5 is a top view of the gas electronic control valve 100; Figure 6 for Figure 3 AA cross-sectional view; Figure 7 for Figure 1 CC cross-sectional view; Figure 8 for Figure 1 BB cross-sectional view.

[0050] The electronic gas control valve 100 includes: a valve body 1, an air inlet pipe 2, a switch solenoid valve 3, a flow solenoid valve 7, an air outlet pipe 5 and an air inlet channel 6, wherein the air inlet pipe 2 is arranged on one side of the valve body 1 and is connected to an external gas pipeline (not shown in the figure); the switch solenoid valve 3 is arranged above the air inlet pipe 2 and is connected to the air inlet pipe 2. When the switch solenoid valve 3 is opened, the gas enters the valve body 1 through the air inlet pipe 2; the air inlet channel 6 is arranged in the valve body 1, one end of which is connected to the air inlet pipe 2 and the other end is connected to the air outlet pipe 5. The air inlet channel 6 is provided with at least one flow solenoid valve 7 for controlling the amount of gas flowing into the air outlet pipe 5.

[0051] Specifically, the gas from the external gas pipeline enters the air inlet pipe 2. During operation, the switch solenoid valve 3 is energized and opened, and the gas enters the air inlet channel 6. The amount of gas flowing into the air outlet pipe 5 is controlled by the flow solenoid valve 7. The switch solenoid valve 3 and the flow solenoid valve 7 of this gas electronic control valve 100 are both installed on the valve body 1 to form an integrated structure, avoiding the problem of multiple intermediate pipelines and high cost in the split installation.

[0052] In this embodiment, each flow solenoid valve 7 is connected to an air injection pipe 8 , which is connected to the air outlet pipe 5 . The air injection pipe 8 can be sealed and connected to the valve body 1 by press-fitting or threaded connection.

[0053] In this embodiment, the flow solenoid valve 7 includes a first flow solenoid valve 70 and a second flow solenoid valve 71, which are disposed on either side of the intake pipe 2. The air jet pipe 8 includes a first air jet pipe 80 and a second air jet pipe 81, connected to the first flow solenoid valve 70 and the second flow solenoid valve 71, respectively. The intake passage 6 includes a first air duct 60, a second air duct 61, and a third air duct 62. The first air duct 60 is connected to the intake pipe 2 at one end and to the second air duct 61 at the other end. The second air duct 61 is connected to the third air duct 62 via the first air jet pipe 80 and the second air jet pipe 81, and the third air duct 62 is connected to the outlet pipe 5.

[0054] Preferably, the first air channel 60 is connected to the middle of the second air channel 61. The air inlet end of the first air jet pipe 80 and the air inlet end of the second air jet pipe 81 are respectively connected to the positions near the two ends of the second air channel 61, and the air outlet end of the first air jet pipe 80 and the air outlet end of the second air jet pipe 81 are respectively connected to the positions near the two ends of the third air channel 62, and the middle of the third air channel 62 is connected to the air outlet pipe 5.

[0055] Specifically, a sealing gasket 30 is disposed between the on-off solenoid valve 3 and the intake pipe 2. When the on-off solenoid valve 3 is energized, the sealing gasket 30 opens, allowing gas to enter the first air passage 60 through the intake pipe 2, then into the middle of the second air passage 61. Gas then flows toward both ends, entering the third air passage 62 through the first and second air passages 80 and 81 adjacent to the ends. The gas then flows into the middle of the third air passage 62 and is discharged through the outlet pipe 5. A first flow rate solenoid valve 70 controls the gas output from the first air passage 80, while a second flow rate solenoid valve 71 controls the gas output from the second air passage 81. This structure stabilizes the gas flow within the intake passage 6.

[0056] In this embodiment, the first air channel 60 is vertically connected to the middle of the second air channel 61, that is, the axis of the first air channel 60 is perpendicular to the axis of the second air channel 61. The second air channel 61 is parallel to the third air channel 62, and the third air channel 62 is below the first air channel 61. The first and second air injection pipes 80 and 82 are vertically connected between the second and third air channels 61 and 62. This structure ensures more uniform gas flow into the second air channel 61 and reduces deviations in the output of the two flow solenoid valves (the first flow solenoid valve 70 and the second flow solenoid valve 71).

[0057] In this embodiment, a sealing gasket 700 is provided between the first flow solenoid valve 70 and the first injection pipe 80 to prevent gas leakage at the connection between the first flow solenoid valve 70 and the first injection pipe 80. Similarly, a sealing gasket 710 is provided between the second flow solenoid valve 71 and the second injection pipe 81 to prevent gas leakage at the connection between the second flow solenoid valve 71 and the second injection pipe 81.

[0058] In this embodiment, the first flow solenoid valve 70 and the second flow solenoid valve 71 are both electrically connected to the electronic control unit ECU (not shown in the figure). The electronic control unit ECU presets parameters according to different operating conditions of the engine to control the opening and closing of the first flow solenoid valve 70 and the second flow solenoid valve 71.

[0059] In this embodiment, plugs 9 are press-fitted at the connection points between the first air channel 60 , the second air channel 61 , and the third air channel 62 and the outside, for isolating them from the outside atmosphere.

[0060] In this embodiment, a gas pressure sensor 10 is further provided on the valve body 1 , and a pressure sampling hole of the gas pressure sensor 10 is communicated with the air inlet pipe 2 . When the gas is connected, the gas pressure sensor 10 can collect the pressure of the gas.

[0061] In another embodiment, the present invention further provides an engine gas control system for an engine, which is equipped with the above-mentioned gas electronic control valve 100. Specifically, the gas outlet pipe 5 is connected to the engine's intake system (not shown).

[0062] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of the present invention and the claims, all of which fall within the scope of protection of the present invention.

Claims

1. A gas electronic control valve, which is characterized by: include: Valve body; An air inlet pipe is provided on the valve body and is connected to an external gas pipeline; A switch solenoid valve connected to the air intake pipe; An air inlet passage is provided in the valve body, one end of the air inlet passage is connected to the air inlet pipe, and the other end of the air outlet pipe is connected to the air inlet passage, and the air inlet passage is provided with at least one flow solenoid valve for controlling the amount of gas flowing into the air outlet pipe; When the switch solenoid valve is opened, the gas enters the gas inlet passage through the gas inlet pipe and flows out from the gas outlet pipe.

2. The gas electronic control valve according to claim 1, characterized in that: Each of the flow solenoid valves is connected to an air injection pipe, and the air injection pipe is connected to the air outlet pipe.

3. The gas electronic control valve according to claim 2, characterized in that: The air intake passage comprises a first air passage, a second air passage and a third air passage, wherein: One end of the first air channel is connected to the air inlet pipe, and the other end is connected to the second air channel; The second air passage is communicated with the third air passage through the air injection pipe, and the third air passage is communicated with the air outlet pipe.

4. The gas electronic control valve according to claim 3, characterized in that: The first air channel is connected to the middle of the second air channel.

5. The gas electronic control valve according to claim 4, characterized in that: The at least one flow solenoid valve includes a first flow solenoid valve and a second flow solenoid valve; The first flow solenoid valve and the second flow solenoid valve are arranged on both sides of the intake pipe; The first flow solenoid valve is connected to a first air injection pipe, and the second flow solenoid valve is connected to a second air injection pipe, wherein the air injection pipe includes the first air injection pipe and the second air injection pipe; The air inlet ends of the first air injection pipe and the second air injection pipe are respectively connected to positions near both ends of the second air channel, the air outlet ends of the first air injection pipe and the second air injection pipe are respectively connected to positions near both ends of the third air channel, and the middle of the third air channel is connected to the air outlet pipe.

6. The gas electronic control valve according to claim 4 or 5, characterized in that: The first air channel is vertically connected to the middle of the second air channel, and the second air channel is parallel to the third air channel.

7. The gas electronic control valve according to claim 1, characterized in that: The switch solenoid valve is provided with a sealing gasket, and when the switch solenoid valve is energized, the sealing gasket opens.

8. The gas electronic control valve according to claim 1, characterized in that: The flow solenoid valve is electrically connected to an electronic control unit.

9. The gas electronic control valve according to claim 3, characterized in that: Plugs are press-fitted at the connections between the first air channel, the second air channel and the third air channel and the outside to isolate them from the external atmosphere.

10. An engine gas control system, characterized in that: A gas electronic control valve according to any one of claims 1 to 9 is installed, and the gas outlet pipe is connected to the intake system of the engine.

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