Active prechamber system and vehicle

Abstract

The active pre-combustion chamber system comprises an air supply pipeline, a pre-combustion chamber, a pre-combustion chamber, a pre-combustion chamber, a pre-combustion chamber, a pre-combustion chamber, a pre-combustion chamber and a pre-combustion chamber, the outlet end of the gas supply pipeline is communicated with the premixing chamber, and the premixing chamber is provided with a fuel injector; the pre-combustion chamber is communicated with the pre-mixing chamber through a connecting pipeline, the pre-combustion chamber is communicated with a combustion chamber of an engine, the pre-combustion chamber is provided with a spark plug, and a control valve used for controlling connection and disconnection is arranged in the connecting pipeline. According to the active pre-combustion chamber system, the spark plug is arranged in the pre-combustion chamber, the fuel injector is arranged in the pre-mixing chamber, the structural compactness of the pre-combustion chamber can be improved, the size of the pre-combustion chamber is reduced, then loss during heat conduction is reduced, and the heat efficiency of an engine is improved; coking and blocking of the oil injector caused by high temperature can be avoided, operation reliability of the oil injector is guaranteed, the using effect is better, and the application range is wider.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle manufacturing, in particular to an active pre-combustion chamber system and a vehicle with the active pre-combustion chamber system. Background Art

[0002] With the development of the national economy and the continuous improvement of living standards, vehicles are becoming more and more important in people's lives and travel. With the rapid development of vehicle production technology, in order to further improve the thermal efficiency of the engine, lean combustion has become one of the important research directions. In theory, the leaner the mixture, the higher the thermal efficiency of the engine. However, the leaner the mixture, the higher the ignition energy required, the more difficult it becomes to ignite, and the slower the flame propagation speed. At present, there are many studies on high-energy ignition devices in the industry, but due to the size and cost of the ignition device, no breakthrough results have been achieved.

[0003] In this context, pre-combustion chamber ignition technology has received widespread attention, especially active pre-combustion chamber technology, which is to arrange a secondary combustion chamber inside the cylinder head, and arrange a small flow injector and a spark plug in the secondary combustion chamber. Before the compression top dead center, the small flow injector sprays fuel, and then the spark plug ignites to form an auxiliary jet flame, which then ignites the fuel and air mixture in the main combustion chamber. This method helps to improve ignition stability and improve the combustion speed of the main combustion chamber mixture under lean combustion conditions due to its large jet area and high energy.

[0004] However, in order to ensure that a mixture of appropriate concentration can be formed inside, the active pre-combustion chamber of the above-mentioned method has a large volume. As a result, after the spark plug is ignited to form a jet flame, the heat transfer loss of the active pre-combustion chamber itself is large, affecting the thermal efficiency. In addition, the solenoid valve that controls the flow of the mixed gas is arranged in the pre-combustion chamber, which causes the temperature at the injector to be too high when the spark plug is ignited, thereby causing the injector to be coked and blocked, affecting the reliability of the injector operation. There is room for improvement. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes an active pre-combustion chamber system, which can reduce the volume of the pre-combustion chamber, thereby reducing the loss during heat conduction, improving the thermal efficiency of the engine, and ensuring the reliability of the injector operation.

[0006] According to the active pre-combustion chamber system of the embodiment of the utility model, it includes: an air supply pipeline, in which an air compressor is provided; a pre-mixing chamber, the outlet end of the air supply pipeline is connected to the pre-mixing chamber, and the pre-mixing chamber is provided with an injector; a pre-combustion chamber, the pre-combustion chamber is connected to the pre-mixing chamber through a connecting pipeline, the pre-combustion chamber is connected to the combustion chamber of the engine, the pre-combustion chamber is provided with a spark plug, and the connecting pipeline is provided with a control valve for controlling the on-off.

[0007] According to the active pre-combustion chamber system of the embodiment of the utility model, the spark plug is arranged in the pre-combustion chamber, and the injector is arranged in the pre-mixing chamber, which can improve the compactness of the pre-combustion chamber structure and reduce the volume of the pre-combustion chamber, thereby reducing the loss during heat conduction and improving the thermal efficiency of the engine. In addition, a control valve is arranged in the connecting pipeline to avoid coking and clogging of the injector due to high temperature, thereby ensuring the reliability of the injector operation, better use effect and wider scope of application.

[0008] According to the active pre-combustion chamber system of some embodiments of the present invention, there are multiple pre-combustion chambers, the premixing chamber is connected to multiple connecting pipes, and the multiple connecting pipes are connected to the multiple pre-combustion chambers in a one-to-one correspondence.

[0009] According to the active pre-combustion chamber system of some embodiments of the present invention, the pre-mixing chamber is provided with a heating element, and the heating element is used to selectively heat the pre-mixing chamber.

[0010] According to some embodiments of the present invention, the active pre-combustion chamber system further includes a temperature sensor, at least part of which is located in the pre-mixing chamber and is used to detect the temperature in the pre-mixing chamber, and the heating element is suitable for selectively heating the pre-mixing chamber according to the temperature of the temperature sensor.

[0011] According to the active pre-combustion chamber system of some embodiments of the present invention, the heating element is configured as a heating wire, and the heating wire is spirally distributed in the pre-mixing chamber.

[0012] According to the active pre-combustion chamber system of some embodiments of the present invention, the pre-combustion chamber is constructed as a hemispherical chamber, the top surface of the pre-combustion chamber is a plane and the bottom surface is a hemispherical surface, and the connecting pipeline is connected to the top surface of the pre-combustion chamber.

[0013] According to the active pre-combustion chamber system of some embodiments of the present invention, the spark plug is arranged in the middle of the top surface of the pre-combustion chamber, and the ignition position of the spark plug is at the same distance from each position of the bottom surface of the pre-combustion chamber.

[0014] According to the active pre-combustion chamber system of some embodiments of the present invention, the bottom surface of the pre-combustion chamber is provided with injection holes, and there are multiple injection holes, and the multiple injection holes are distributed at intervals.

[0015] According to the active pre-combustion chamber system of some embodiments of the present invention, the air supply pipeline is connected to the side wall of the pre-mixing chamber; and / or the injector is arranged on the top wall of the pre-mixing chamber; and / or the connecting pipeline is connected to the bottom wall of the pre-mixing chamber.

[0016] The utility model also provides a vehicle.

[0017] The vehicle according to the embodiment of the utility model is provided with any of the active pre-combustion chamber systems described above.

[0018] The vehicle and the above-mentioned active pre-combustion chamber system have the same advantages as those of the prior art, which will not be described in detail here.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 It is a structural schematic diagram of an active pre-combustion chamber system according to an embodiment of the utility model.

[0022] Reference numerals:

[0023] Active pre-chamber system 100,

[0024] Air supply pipeline 1, outlet port 11, air compressor 12, pressure gauge 13,

[0025] Premixing chamber 2, top wall 21, side wall 22, bottom wall 23, fuel injector 24, heating element 25, temperature sensor 26,

[0026] Connecting pipeline 3, control valve 31,

[0027] Pre-combustion chamber 4, top surface 41, spark plug 42, bottom surface 43, cylinder head 5. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0029] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying 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, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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.

[0031] Unless otherwise specified, the front-to-back direction in the present application is the longitudinal direction of the vehicle, that is, the X direction; the left-right direction is the lateral direction of the vehicle, that is, the Y direction; and the up-down direction is the vertical direction of the vehicle, that is, the Z direction.

[0032] Reference below Figure 1 The active pre-combustion chamber system 100 according to the embodiment of the present utility model can reduce the volume of the pre-combustion chamber 4, thereby reducing the loss during heat conduction, improving the thermal efficiency of the engine, and ensuring the operating reliability of the injector 24.

[0033] like Figure 1 As shown, an active pre-combustion chamber system 100 according to an embodiment of the present utility model comprises: an air supply pipeline 1, a pre-mixing chamber 2 and a pre-combustion chamber 4.

[0034] An air compressor 12 is provided in the air supply pipeline 1, the outlet end 11 of the air supply pipeline 1 is connected to the premixing chamber 2, the premixing chamber 2 is provided with an injector 24, the precombustion chamber 4 is connected to the premixing chamber 2 through a connecting pipeline 3, the precombustion chamber 4 is connected to the combustion chamber of the engine, the precombustion chamber 4 is provided with a spark plug 42, and the connecting pipeline 3 is provided with a control valve 31 for controlling the on and off.

[0035] Among them, the active pre-combustion chamber system 100 is connected to the cylinder head 5 of the engine. The engine can be set as an airway injection engine or a direct injection engine, etc. The fuel in the engine can be set to gasoline or alcohol fuel such as methanol and ethanol. When the engine compression stroke approaches the top dead center, the active pre-combustion chamber system 100 can form an auxiliary jet flame, and the jet flame has high energy, which helps to improve the ignition stability and ensure the reliability of engine operation.

[0036] Specifically, the active pre-combustion chamber system 100 is provided with an air supply pipeline 1 and a pre-mixing chamber 2, one end of the air supply pipeline 1 is set as an inlet end, and the other end is set as an outlet end 11, gas can enter the air supply pipeline 1 through the inlet end, and the outlet end 11 of the air supply pipeline 1 is connected with the pre-mixing chamber 2, that is, the gas in the air supply pipeline 1 can enter the pre-mixing chamber 2 through the outlet end 11, and an air compressor 12 is provided in the air supply pipeline 1, and the air compressor 12 is arranged between the inlet end and the outlet end 11, so that the gas entering the air supply pipeline 1 through the inlet end can be compressed by the air compressor 12 and then enter the pre-mixing chamber 2 through the outlet end 11, after the gas in the air supply pipeline 1 is compressed by the air compressor 12, the gas pressure can be controlled within the required range, so that the air compressor 12 can output compressed gas with stable pressure to meet the needs of the pre-mixing chamber 2, wherein, for a supercharged engine, the air compressor 12 arranged in the air supply pipeline 1 can be cancelled to save the installation cost.

[0037] Furthermore, the premixing chamber 2 is provided with an injector 24, which can inject fuel into the premixing chamber 2, and the injection pressure of the injector 24 is controlled at 3 to 10 bar, that is, the injector 24 adopts a low-pressure injector, which can reduce the installation cost. The gas compressed by the air compressor 12 can enter the premixing chamber 2 through the outlet end 11 of the air supply pipeline 1, and when the engine performs a compression cycle each time, the injector 24 can inject fuel into the premixing chamber 2, so that the fuel can be mixed with the compressed gas to be atomized and evaporated in the premixing chamber 2 to form a good homogeneous mixed gas.

[0038] The active pre-combustion chamber system 100 is also provided with a pre-combustion chamber 4, and the pre-combustion chamber 4 and the pre-mixing chamber 2 can be connected through a connecting pipe 3, that is, one end of the connecting pipe 3 is connected to the pre-mixing chamber 2, and the other end is connected to the pre-combustion chamber 4, so that the homogeneous mixed gas after atomization and evaporation in the pre-mixing chamber 2 can flow into the pre-combustion chamber 4 through the connecting pipe 3, and a spark plug 42 is provided in the pre-combustion chamber 4, and the spark plug 42 can ignite the mixed gas after ignition, and the pre-combustion chamber 4 is provided in the cylinder head 5 and is connected to the combustion chamber of the engine, so that the ignited mixed gas can enter the combustion chamber of the engine through the pre-combustion chamber 4, thereby improving the operating efficiency of the engine, and arranging the spark plug 42 in the pre-combustion chamber 4 and arranging the injector 24 in the pre-mixing chamber 2 can improve the compactness of the structure of the pre-combustion chamber 4, reduce the volume of the pre-combustion chamber 4, thereby reducing the loss during heat conduction and improving the thermal efficiency of the engine.

[0039] At the same time, a control valve 31 is provided in the connecting pipeline 3, and the control valve 31 can control the on-off of the connecting pipeline 3, that is, the control valve 31 can control the mixed gas in the premixing chamber 2 to enter the precombustion chamber 4. The control valve 31 can be set as a solenoid valve, and can be set as a rotary valve or a lifting valve, etc. The opening time of the control valve 31 can control the amount of mixed gas entering the precombustion chamber 4, that is, extending the opening time of the control valve 31 can increase the amount of mixed gas entering the precombustion chamber 4, and shortening the opening time of the control valve 31 can reduce the amount of mixed gas entering the precombustion chamber 4, and then the opening time of the control valve 31 can be controlled according to different needs. The control valve 31 can be set to open in the early compression stage of the engine cylinder, and it is closed before the spark plug 42 in the precombustion chamber 4 ignites, which can ensure that there is enough mixed gas in the precombustion chamber 4 for ignition, and can avoid the reflux of the ignited mixed gas into the premixing chamber 2, thereby avoiding the coking and clogging of the injector 24 caused by high temperature, and ensuring the operating reliability of the injector 24.

[0040] According to the active pre-combustion chamber system 100 of the embodiment of the utility model, the spark plug 42 is arranged in the pre-combustion chamber 4, and the injector 24 is arranged in the pre-mixing chamber 2, which can improve the compactness of the structure of the pre-combustion chamber 4 and reduce the volume of the pre-combustion chamber 4, thereby reducing the loss during heat conduction and improving the thermal efficiency of the engine. In addition, a control valve 31 is arranged in the connecting pipeline 3 to avoid coking and clogging of the injector 24 due to high temperature, thereby ensuring the operating reliability of the injector 24, achieving better use effect and a wider range of application.

[0041] In some embodiments, there are multiple pre-combustion chambers 4, and the pre-mixing chamber 2 is connected to multiple connecting pipes 3, and the multiple connecting pipes 3 are connected to the multiple pre-combustion chambers 4 in a one-to-one correspondence.

[0042] Specifically, the pre-combustion chamber 4 is arranged on the cylinder head 5, and the pre-combustion chamber 4 can be arranged in plurality, the number of cylinders of the engine can be arranged in plurality, and each of the plurality of cylinders can be arranged with a corresponding pre-combustion chamber 4, that is, the plurality of pre-combustion chambers 4 and the plurality of cylinders are arranged in one-to-one correspondence. In this embodiment, the engine is arranged as a four-cylinder engine, and then Figure 1 As shown, the number of pre-combustion chambers 4 is also correspondingly set to four.

[0043] Furthermore, the connecting pipe 3 is connected between the pre-combustion chamber 4 and the pre-combustion chamber 2. The pre-combustion chamber 4 is provided in plurality, and the connecting pipe 3 is provided in plurality. One end of the plurality of connecting pipes 3 is connected to the pre-combustion chamber 2, and the other end is respectively connected to the corresponding pre-combustion chamber 4, so that the mixed gas in the pre-combustion chamber 2 can flow to the plurality of pre-combustion chambers 4 through the plurality of connecting pipes 3 respectively. The amount of fuel injected by the injector 24 needs to be set according to the total demand of the plurality of pre-combustion chambers 4, and the injector 24 has a minimum injection amount. The pre-combustion chamber 2 is connected with the plurality of pre-combustion chambers 4, which can avoid the amount of fuel injected by the injector 24 far exceeding the amount of fuel required for ignition of the pre-combustion chamber 4, thereby improving the fluidity of the mixed gas in the pre-combustion chamber 4, and can reduce heat conduction loss, thereby improving the thermal efficiency of the engine.

[0044] In some embodiments, the premixing chamber 2 is provided with a heating element 25 , and the heating element 25 is used to selectively heat the premixing chamber 2 .

[0045] Specifically, the gas compressed by the air compressor 12 can enter the premixing chamber 2 through the outlet end 11 of the air supply pipeline 1, and each time the engine performs a compression cycle, the injector 24 arranged in the premixing chamber 2 can spray fuel into the premixing chamber 2, so that the fuel can be mixed with the compressed gas. The premixing chamber 2 is also provided with a heating element 25, and the heating element 25 can selectively heat the premixing chamber 2, that is, the heating element 25 can stop heating when the temperature of the fuel and the compressed gas is met for atomization and evaporation, and heat the premixing chamber 2 when the temperature is lower than the temperature of the fuel and the compressed gas for atomization and evaporation, so as to form a good homogeneous mixed gas.

[0046] In actual use, the high-temperature exhaust gas generated by the engine operation can also be heat exchanged with the premixing chamber 2, which can reduce the installation cost and improve the energy saving of the engine. At the same time, it can also be set that when the engine is idling and working at a low load, the heating element 25 is operated to heat the premixing chamber 2. When the engine is running at a medium or high load, the high-temperature exhaust gas is heat exchanged with the premixing chamber 2 to heat the premixing chamber 2. While improving the energy saving of the engine, it can also ensure the reliability of heating the premixing chamber 2.

[0047] In some embodiments, the active pre-combustion chamber system 100 further includes a temperature sensor 26 , at least part of which is located in the pre-mixing chamber 2 and is used to detect the temperature in the pre-mixing chamber 2 , and the heating element 25 is suitable for selectively heating the pre-mixing chamber 2 according to the temperature of the temperature sensor 26 .

[0048] Specifically, the fuel and compressed gas in the premixing chamber 2 are mixed and heated by the heating element 25, and then atomized and evaporated to form a good homogeneous mixed gas. The active precombustion chamber system 100 is also provided with a temperature sensor 26. At least part of the temperature sensor 26 is located in the premixing chamber 2, that is, the probe of the temperature sensor 26 can be extended into the premixing chamber 2, and the temperature display end of the temperature sensor 26 is placed outside the premixing chamber 2, so that the temperature sensor 26 detects the temperature in the premixing chamber 2 and the detection value can be observed in real time.

[0049] Furthermore, the heating element 25 can selectively heat the premixing chamber 2 according to the temperature value detected by the temperature sensor 26, that is, the temperature for atomization and evaporation of the fuel and the compressed gas can be set to 50°C to 60°C. When the temperature in the premixing chamber 2 detected by the temperature sensor 26 is lower than 50°C, the heating element 25 can heat the premixing chamber 2, and when the temperature in the premixing chamber 2 detected by the temperature sensor 26 is higher than 60°C, the heating element 25 stops heating the premixing chamber 2, thereby ensuring the effect of atomization and evaporation of the fuel and the compressed gas after mixing to form a good homogeneous mixed gas.

[0050] In some embodiments, the heating element 25 is configured as a heating wire, and the heating wire is spirally distributed in the premixing chamber 2 .

[0051] Specifically, the premixing chamber 2 is provided with a heating element 25, which can atomize and evaporate the fuel and compressed gas in the premixing chamber 2 to form a good homogeneous mixed gas, and the heating element 25 can be set as a heating wire, and the heating wire can be set as a metal wire, etc. When the heating wire is energized, the current will pass through the heating wire body and generate impedance. Since there will be a certain resistance when the current passes through the metal wire, the electrical energy will be converted into thermal energy, so that the heating wire generates a high temperature, and the heating wire can be spirally distributed outside the premixing chamber 2, thereby increasing the range of heating of the premixing chamber 2 by the heating wire, ensuring the uniformity of the heating of the fuel and compressed gas in the premixing chamber 2 by the heating wire, and improving the atomization evaporation efficiency.

[0052] In some embodiments, the pre-combustion chamber 4 is constructed as a hemispherical chamber, the top surface 41 of the pre-combustion chamber 4 is a plane and the bottom surface 43 is a hemispherical surface, and the connecting pipeline 3 is connected to the top surface 41 of the pre-combustion chamber 4 .

[0053] Specifically, the pre-combustion chamber 4 is provided in plurality, the pre-mixing chamber 2 is connected to a plurality of connecting pipes 3, and the plurality of connecting pipes 3 are respectively connected to the corresponding pre-combustion chambers 4, so that the mixed gas in the pre-mixing chamber 2 can flow to the plurality of pre-combustion chambers 4 through the plurality of connecting pipes 3, and Figure 1 As shown, the pre-combustion chamber 4 is configured as a hemispherical chamber, that is, one side of the pre-combustion chamber 4 is a plane, and the other side is a hemispherical surface. In the present embodiment, the top surface 41 of the pre-combustion chamber 4 is configured as a plane, and the bottom surface 43 is configured as a hemispherical surface, that is, the side of the pre-combustion chamber 4 close to the premixing chamber 2 is a plane, and the side close to the combustion chamber of the engine is a hemispherical surface. The connecting pipe 3 can be connected to the top surface 41 of the pre-combustion chamber 4, that is, the connecting pipe 3 can be connected to the plane of the pre-combustion chamber 4, which can shorten the setting length of the connecting pipe 3, save the setting cost, and ensure the connection reliability, so that the mixed gas can be evenly dispersed after entering the pre-combustion chamber 4, thereby ensuring the uniformity of the mixed gas in various places in the pre-combustion chamber 4, and further ensuring the reliability of the ignition of the spark plug 42.

[0054] In some embodiments, the spark plug 42 is disposed in the middle of the top surface 41 of the pre-combustion chamber 4 , and the ignition position of the spark plug 42 is at the same distance from each position of the bottom surface 43 of the pre-combustion chamber 4 .

[0055] Specifically, Figure 1 As shown, the premixing chamber 2 and multiple precombustion chambers 4 are connected through the connecting pipe 3, and each precombustion chamber 4 is provided with a spark plug 42, and the precombustion chamber 4 is configured as a hemispherical chamber, whose top surface 41 is a plane and the bottom surface 43 is a hemispherical surface, and the spark plug 42 is arranged in the middle of the top surface 41 of the precombustion chamber 4, that is, the spark plug 42 is arranged in the middle of the plane of the precombustion chamber 4, and the precombustion chamber 4 is configured as a hemispherical chamber, so that the spark plug 42 is arranged at the center of the hemispherical circle, so that the distance from the ignition position of the spark plug 42 (that is, the electrode center) to each part of the hemispherical surface is equal, and the spark plug 42 can ignite the mixed gas in the precombustion chamber 4, ensuring that the distance between the spark plug 42 and the mixed gas in all directions in the precombustion chamber 4 is the shortest, thereby reducing the tendency of detonation or misfire in the precombustion chamber 4, and ensuring the ignition reliability and ignition effect of the spark plug 42.

[0056] In some embodiments, the bottom surface 43 of the pre-combustion chamber 4 is provided with a plurality of injection holes, and the plurality of injection holes are distributed at intervals.

[0057] Specifically, the pre-combustion chamber 4 is arranged in the cylinder head 5, and there are multiple pre-combustion chambers 4. The multiple pre-combustion chambers 4 are respectively arranged corresponding to the multiple cylinders. The pre-combustion chamber 4 is connected to the combustion chamber of the engine. The pre-combustion chamber 4 is arranged as a hemispherical chamber. The hemispherical surface of the pre-combustion chamber 4 is arranged close to the combustion chamber of the engine, and a spray hole is arranged on the hemispherical surface of the pre-combustion chamber 4. The pre-combustion chamber 4 can be connected with the combustion chamber through the spray hole, so that the pre-combustion chamber 4 can spray flames into the combustion chamber of the engine, thereby ensuring the operation of the engine, and the spray hole can be set to multiple. In this embodiment, 4 to 10 spray holes can be set, and the multiple spray holes are evenly distributed on the hemispherical surface to ensure the uniformity and reliability of the spray.

[0058] In some embodiments, the air supply line 1 is connected to the side wall 22 of the premixing chamber 2; and / or, the injector 24 is disposed on the top wall 21 of the premixing chamber 2; and / or, the connecting line 3 is connected to the bottom wall 23 of the premixing chamber 2.

[0059] Specifically, the outlet end 11 of the air supply pipeline 1 is connected to the premixing chamber 2, and can be connected to the side wall 22 of the premixing chamber 2, that is, the compressed gas in the air supply pipeline 1 can enter the premixing chamber 2 from the middle of the premixing chamber 2. A pressure gauge 13 can also be provided in the air supply pipeline 1. The pressure gauge 13 can monitor the pressure of the premixing chamber 2, so that the pressure of the premixing chamber 2 can be maintained at 3 to 5 bar, thereby ensuring the operational reliability of the premixing chamber 2.

[0060] Furthermore, the injector 24 is arranged on the top wall 21 of the premixing chamber 2, that is, the injector 24 can spray fuel downward at the top wall 21 of the premixing chamber 2, and the compressed gas enters from the middle of the premixing chamber 2, so that the path of the fuel after being sprayed out can pass through the compressed gas, and then can be mixed with the compressed gas to ensure the mixing effect, and the injector 24 is arranged at the top, and the fuel can flow downward under the action of the injector 24 and gravity, which can ensure the fuel running path, and at the same time, the connecting pipeline 3 can be arranged on the bottom wall 23 of the premixing chamber 2, so as to facilitate the mixed gas that has been atomized and evaporated to flow into the precombustion chamber 4.

[0061] Among them, each of the multiple pre-combustion chambers 4 is correspondingly provided with a connecting pipeline 3, and each connecting pipeline 3 is provided with a control valve 31. The multiple control valves 31 can connect or disconnect the connecting pipeline 3 in sequence according to the ignition sequence of the spark plug 42 in the corresponding pre-mixing chamber 2.

[0062] The utility model also provides a vehicle.

[0063] The vehicle according to the embodiment of the present utility model is provided with any one of the above-mentioned active pre-combustion chamber systems 100 .

[0064] According to the vehicle of the embodiment of the utility model, an active pre-combustion chamber system 100 is provided, and the active pre-combustion chamber system 100, the spark plug 42 is arranged in the pre-combustion chamber 4, and the injector 24 is arranged in the pre-mixing chamber 2, which can improve the compactness of the structure of the pre-combustion chamber 4, reduce the volume of the pre-combustion chamber 4, and further reduce the loss during heat conduction, improve the thermal efficiency of the engine, and a control valve 31 is arranged in the connecting pipeline 3, which can avoid coking and clogging of the injector 24 due to high temperature, ensure the operating reliability of the injector 24, and have a better use effect and a wider range of applications.

[0065] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" 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 utility model. In this specification, the schematic representation 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.

[0066] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An active pre-combustion chamber system, characterized in that: include: An air supply pipeline, wherein an air compressor is provided in the air supply pipeline; A premixing chamber, the outlet end of the air supply pipeline is in communication with the premixing chamber, and the premixing chamber is provided with a fuel injector; A pre-combustion chamber is connected to the pre-mixing chamber through a connecting pipeline, the pre-combustion chamber is connected to the combustion chamber of the engine, the pre-combustion chamber is provided with a spark plug, and a control valve for controlling on and off is provided in the connecting pipeline.

2. The active pre-combustion chamber system according to claim 1, characterized in that: There are a plurality of pre-combustion chambers, and the pre-mixing chamber is connected to a plurality of connecting pipelines, and the plurality of connecting pipelines are connected to the plurality of pre-combustion chambers in a one-to-one correspondence.

3. The active pre-combustion chamber system according to claim 1 or 2, characterized in that: The premixing chamber is provided with a heating element, and the heating element is used to selectively heat the premixing chamber.

4. The active pre-combustion chamber system according to claim 3, characterized in that: The system further comprises a temperature sensor, at least a portion of which is located in the premixing chamber and is used to detect the temperature in the premixing chamber, and the heating element is suitable for selectively heating the premixing chamber according to the temperature of the temperature sensor.

5. The active pre-combustion chamber system according to claim 3, characterized in that: The heating element is configured as a heating wire, and the heating wire is spirally distributed in the premixing chamber.

6. The active pre-combustion chamber system according to claim 1 or 2, characterized in that: The pre-combustion chamber is constructed as a hemispherical chamber, the top surface of the pre-combustion chamber is a plane and the bottom surface is a hemispherical surface, and the connecting pipeline is connected to the top surface of the pre-combustion chamber.

7. The active pre-combustion chamber system according to claim 6, characterized in that: The spark plug is arranged at the middle of the top surface of the pre-combustion chamber, and the ignition position of the spark plug is at the same distance from each position of the bottom surface of the pre-combustion chamber.

8. The active pre-combustion chamber system according to claim 6, characterized in that: The bottom surface of the pre-combustion chamber is provided with a plurality of injection holes, and the plurality of injection holes are distributed at intervals.

9. The active pre-combustion chamber system according to claim 1 or 2, characterized in that: The air supply pipeline is connected to the side wall of the premixing chamber; And / or, the fuel injector is arranged on the top wall of the premixing chamber; And / or, the connecting pipeline is connected to the bottom wall of the premixing chamber.

10. A vehicle, characterized in that: An active pre-combustion chamber system according to any one of claims 1-9 is provided.

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