Pre-combustion chamber system of engine and engine

Abstract

The utility model discloses an engine pre-combustion chamber system and an engine, and relates to the technical field of engineering machinery. Comprising an air inlet pipe which is provided with at least one air taking opening; the distributor is provided with a gas taking pipe and a distribution pipe, the gas taking pipe is connected to the gas taking opening, at least part of the area of the distribution pipe is provided with a disturbance section, and the disturbance section is configured to enable gas flow to generate disturbance when the gas flow flows through the disturbance section so that the gas flow can purge the spark plug; a pre-combustion chamber is formed in the pre-combustion main body, a spark plug and a one-way valve are connected in the pre-combustion main body, the spark plug partially extends into the pre-combustion chamber, the one-way valve is connected with the distribution pipe, and the one-way valve can enable the air inlet pipe and the pre-combustion chamber to be communicated or disconnected; when the airflow flows through the disturbance section, disturbance is generated, and the disturbed airflow can flow transversely, so that the root part of the sparking plug is purged, residual waste gas of the sparking plug part is thoroughly removed in time, combustion is more sufficient, and the exhaust temperature is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of construction machinery, and particularly relates to an engine pre-chamber system and an engine. Background Technique

[0002] Due to the limitation of fuel properties, the overall combustion speed of the national VI natural gas engine is slow, resulting in problems of insufficient economy and relatively high exhaust temperature. Moreover, due to the limited space of the engine, the one-way valve and the spark plug are arranged side by side for compactness requirements, so that the scavenging passage is arranged in parallel with the spark plug; with such an arrangement, during the process of low-pressure scavenging relying on the negative pressure of the intake stroke, the mixed gas in the scavenging passage directly flows towards the low-pressure area and cannot flow laterally, resulting in ineffective scavenging of the root part of the spark plug, especially the electrode part of the spark plug, and further leading to poor scavenging of the spark plug, incomplete combustion and high exhaust temperature.

[0003] For example, the patent application number is 202410289002.0, and the patent name is Cylinder and Engine. It discloses that the one-way valve is used to connect the intake pipe and the pre-chamber, and the spark plug partially extends into the pre-chamber. The one-way valve and the spark plug are connected in parallel in the pre-chamber body. Therefore, it has the problem that the mixed gas in the scavenging passage directly flows towards the low-pressure area and cannot effectively blow the electrode part of the spark plug thoroughly, resulting in poor scavenging, residual waste gas in the root part of the spark plug that cannot be purged in time and completely, and easily leading to incomplete combustion and relatively high exhaust temperature. Content of the Utility Model

[0004] The utility model provides an engine pre-chamber system and an engine to solve the problem that the mixed gas in the scavenging passage directly flows towards the low-pressure area and cannot flow laterally, resulting in ineffective scavenging of the root part of the spark plug, especially the electrode part of the spark plug, and further leading to poor scavenging of the spark plug, incomplete combustion and high exhaust temperature.

[0005] The technical solution adopted by the utility model is as follows:

[0006] An engine pre-chamber system, comprising:

[0007] An intake pipe, the intake pipe having at least one air intake port;

[0008] A distributor, the distributor having an air intake pipe and a distribution pipe, the air intake pipe being connected to the air intake port, at least a partial area of the distribution pipe having a disturbance section, the disturbance section being configured to be able to cause air flow disturbance when the air flow passes through the disturbance section so that the air flow can purge the spark plug;

[0009] A pre - combustion main body, within which a pre - combustion chamber is formed. A spark plug and a check valve are connected within the pre - combustion main body. The spark plug partially extends into the pre - combustion chamber. The check valve is connected to the distribution pipe, and the check valve can make the intake pipe communicate with or disconnect from the pre - combustion chamber.

[0010] An engine pre - combustion chamber system of the present utility model further has the following additional technical features:

[0011] The distribution pipe further has a straight - flow section; the disturbance section is connected to the downstream side of the straight - flow section. The disturbance section has an outlet, and the outlet is connected to the check valve. The straight - flow section has an inlet, and the inlet is connected to a distributor.

[0012] The disturbance section of the distribution pipe has a spiral pipe; the spiral pipe is formed by screwing a plurality of threaded pipes along the axial direction to form a hollow twist - like structure.

[0013] The ports formed by connecting a plurality of the threaded pipes are in a petal structure.

[0014] The disturbance section of the distribution pipe has a corrugated pipe. The corrugated pipe includes alternately connected convex sections and concave sections in sequence. At the connection of the convex section and the concave section, a guiding surface is formed that inclines inward at a preset angle.

[0015] The cross - section of the concave section in the radial direction is in an arc - like structure.

[0016] The intake pipe has a first air - intake port, a second air - intake port, and a third air - intake port; the first air - intake port is used to output a combustible mixture of gas and air, the second air - intake port is used to output a combustible mixture of gas, air, and EGR gas, and the third air - intake port is used to output a combustible mixture of gas, air, and EGR gas.

[0017] The pre - combustion main body includes a bushing assembly and a pre - combustion chamber main body; the bushing assembly includes a spark - plug bushing and an ignition - coil bushing connected to each other; the spark - plug bushing is connected with a spark plug and a check valve inside; the ignition - coil bushing is connected with an ignition coil inside; the pre - combustion chamber main body is connected below the bushing assembly, and a pre - combustion chamber is formed inside the cavity of the pre - combustion chamber main body.

[0018] One end of the disturbance section can extend out of the spark - plug bushing and partially extend into the ignition - coil bushing; or one end of the disturbance section can extend out of the spark - plug bushing and the ignition - coil bushing in sequence.

[0019] The present application also relates to an engine, which includes a turbocharger, a cylinder, and the above-mentioned engine pre-chamber system connected to the inside of the cylinder. The turbocharger includes a compressor and a turbine. The compressor is connected to the intake pipe to supply air to the intake pipe, and the turbine is connected to the exhaust pipe of the cylinder for exhaust gas discharge.

[0020] Due to the adoption of the above technical solution, the beneficial effects achieved by the present utility model are as follows:

[0021] 1. An engine pre-chamber system, including an intake pipe, a distributor, and a pre-chamber main body. The intake pipe has at least one air intake port; the distributor has an air intake pipe and a distribution pipe. The air intake pipe is connected to the air intake port, and at least part of the distribution pipe has a disturbance section, which is configured to be able to cause the air flow to generate disturbance when flowing through the disturbance section, so that the air flow can purge the spark plug; a pre-chamber is formed inside the pre-chamber main body, a spark plug and a check valve are connected inside the pre-chamber main body, part of the spark plug extends into the pre-chamber, and the check valve is connected to the distribution pipe. The check valve can make the intake pipe communicate with or disconnect from the pre-chamber.

[0022] The intake pipe is connected to the distributor through the air intake pipe. The air intake pipe can output the combustible mixture in the intake pipe to the distributor, and after being input to the distribution pipe through the distributor, it is output to the check valve inside the pre-chamber main body, and then the combustible mixture flows to the pre-chamber through the opening of the check valve, so as to realize the low-pressure scavenging of the pre-chamber by using the pressure difference between the intake pipe and the inside of the cylinder, and it is possible to take the equivalent mixture from the intake pipe as the scavenging working medium to provide an appropriate amount of combustible mixture for the pre-chamber; at least part of the distribution pipe has a disturbance section, and the disturbance section occupies a part of the distribution pipe or even the entire distribution pipe. The purpose of setting the disturbance section is to be able to cause the air flow to generate disturbance when flowing through the disturbance section, and the disturbed air flow can flow laterally, so as to realize the purging of the root part of the spark plug, especially the purging of the electrode position of the spark plug, thereby improving the scavenging efficiency, enabling the residual exhaust gas in the spark plug part to be removed in time and thoroughly, making the combustion more complete, and reducing the exhaust temperature.

[0023] 2. As a preferred embodiment of the present utility model, the distribution pipe also has a straight-through section; the disturbance section is connected to the downstream side of the straight-through section, the disturbance section has an outlet, the outlet is connected to the check valve, and the straight-through section has an inlet, and the inlet is connected to the distributor.

[0024] The distribution pipe has various structural forms. One embodiment is that when there is a partial disturbance section in the distribution pipe. In this embodiment, the distribution pipe includes a straight section and a disturbance section. The straight section and the disturbance section are connected to form the entire distribution pipe. The disturbance section is connected to the downstream side of the straight section, and the outlet of the disturbance section can be connected to a check valve. The purpose is to make the disturbance section close to the check valve, so that the air flow disturbance effect from the check valve to the vicinity of the spark plug is better, thereby improving the scavenging effect of the root part of the spark plug, enabling the residual exhaust gas to be purged in time and thoroughly, making the combustion more complete, and reducing the exhaust temperature.

[0025] 3. As a preferred embodiment of the present utility model, the disturbance section of the distribution pipe has a spiral pipe, and the spiral pipe includes a plurality of threaded pipes screwed along the axial direction to form a hollow twist structure.

[0026] The disturbance section of the distribution pipe has various structural forms. One embodiment is to design the distribution pipe as a structure formed by screwing a plurality of threaded pipes together to form a twist shape, and the plurality of threaded pipes are interconnected to form a hollow structure, so that the combustible mixture can form a vortex disturbance inside the distribution pipe, and the gas forming the vortex can strengthen the purging of the root part of the spark plug.

[0027] 4. As a preferred embodiment of the present utility model, the port formed by connecting a plurality of threaded pipes has a petal structure.

[0028] The port formed by connecting a plurality of threaded pipes has a petal structure. The petal structure increases the flow area of the combustible mixture and is evenly distributed in the circumferential direction, enabling the combustible mixture to be output more evenly, further enhancing the flow of the combustible mixture to the root part of the spark plug, purging the root part of the spark plug, and then improving the combustion sufficiency and reducing the exhaust temperature.

[0029] 5. As a preferred embodiment of the present utility model, the disturbance section of the distribution pipe has a corrugated pipe, and the corrugated pipe includes alternately connected convex sections and concave sections, and a guiding surface inclined inward at a preset angle is formed at the connection of the convex section and the concave section.

[0030] Another embodiment of the distribution pipe is to design the disturbance section of the distribution pipe as a corrugated pipe. The corrugated pipe includes convex sections and concave sections, making the corrugated pipe form an alternating concave and convex structure, so that the internal air flow in the corrugated pipe forms an air flow disturbance; the end surface where the convex section and the concave section are connected forms a guiding surface inclined inward at a preset angle, so that the internal air flow in the corrugated pipe flows along the guiding surface, further enhancing the gas flow disturbance effect, enabling the gas to flow laterally to the root part of the spark plug, purging the position of the spark plug electrode, and achieving the complete removal of the residual exhaust gas. Description of the Drawings

[0031] The accompanying drawings described herein are used to provide a further understanding of the present utility model and constitute a part of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0032] Figure 1 is a structural diagram of an engine pre-chamber system under an embodiment of the present utility model;

[0033] Figure 2 is a structural diagram of a pre-chamber main body of an engine pre-chamber system under an embodiment of the present utility model;

[0034] Figure 3 is a schematic structural diagram of a disturbance section of an engine pre-chamber system connected to a pre-chamber main body under an embodiment of the present utility model;

[0035] Figure 4 is Figure 3 a schematic structural diagram of the spiral tube in;

[0036] Figure 5 is a schematic structural diagram of a disturbance section of an engine pre-chamber system connected to a pre-chamber main body under another embodiment of the present utility model;

[0037] Figure 6 is Figure 5 a schematic structural diagram of the corrugated tube in;

[0038] In the figure,

[0039] 1. Intake pipe; 2. Distributor;

[0040] 3. Pre-chamber main body; 31. Bushing assembly; 311. Spark plug bushing; 312. Ignition coil bushing; 32. Pre-chamber main body;

[0041] 4. Air intake pipe; 5. Distribution pipe; 6. Pre-chamber; 7. Spark plug; 8. Check valve;

[0042] 9. Spiral tube; 91. First threaded tube; 92. Second threaded tube; 93. Third threaded tube;

[0043] 10. Corrugated tube; 101. Bulge section; 102. Depression section;

[0044] 11. Ignition coil. Detailed implementation mode

[0045] In the following description, many specific details are set forth in order to provide a thorough understanding of the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present utility model is not limited by the specific embodiments disclosed below.

[0046] In addition, in the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "top", "bottom", "inner", "outer", "axial direction", "radial direction", "circumferential direction", etc. is based on the orientation or positional relationship shown in the drawings. It is 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 should not be construed as a limitation to the present utility model.

[0047] In the present utility model, unless otherwise clearly specified and defined, terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. 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.

[0048] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description referring to terms such as "embodiment", "example", "an embodiment", "example" or "specific example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0049] Glossary:

[0050] Pre-chamber: There is an independent space outside the main combustion chamber of the engine as the pre-chamber. The main combustion chamber and the pre-chamber are connected through different numbers of orifices. Ignition occurs in the pre-chamber. After the pre-chamber catches fire, high-temperature and high-pressure gas is formed. The high-temperature and high-pressure gas enters the main combustion chamber through the orifices and ignites the mixture gas, forming multi-jet ignition.

[0051] Low-pressure active scavenging pre-chamber: Take the equivalent mixture gas from the intake pipe as the scavenging working medium, and utilize the pressure difference between the intake pipe and the cylinder during the intake process to achieve low-pressure active scavenging of the pre-chamber.

[0052] Scavenging: In the field of engines, it usually refers to the process of purging and displacing the combustion exhaust gas with gas or combustible mixture gas.

[0053] To more clearly illustrate the overall concept of the present utility model, the following will be described in detail by way of example in conjunction with the accompanying drawings of the specification.

[0054] The present utility model relates to an engine pre-chamber system, as Figures 1-6 shown, comprising an intake pipe 1 having at least one air intake port; a distributor 2 having an air intake pipe 4 and a distribution pipe 5, the air intake pipe 4 being connected to the air intake port, at least a partial region of the distribution pipe 5 having a disturbance section configured to be capable of causing air flow to be disturbed when flowing through the disturbance section so that the air flow can purge a spark plug 7; a pre-combustion main body 3 in which a pre-combustion chamber 6 is formed, a spark plug 7 and a check valve 8 being connected in the pre-combustion main body 3, the spark plug 7 partially extending into the pre-combustion chamber 6, the check valve 8 being connected to the distribution pipe 5, and the check valve 8 being capable of connecting or disconnecting the intake pipe 1 and the pre-combustion chamber 6.

[0055] It should be noted that: the cylinder is an important component of the engine, and the cylinder has four strokes, namely, the intake stroke, the compression stroke, the power stroke, and the exhaust stroke. In the intake stroke, the piston moves downward and the intake valve opens; in the compression stroke, the piston moves upward and the intake valve closes, and the gas in the main combustion chamber is compressed; in the power stroke, the piston reaches the top dead center, the spark plug 7 ignites, the gas expands, forcing the piston to move downward; in the exhaust stroke, the piston reaches the bottom dead center, the exhaust valve opens, and the piston moves upward to discharge the burned gas out of the exhaust valve; during the intake stroke, under the dual actions of the pressure difference force between the intake pipe 1 and the pre-combustion chamber 6 and the gravity of the valve core of the check valve 8, the valve core moves downward, and the combustible mixture in the intake pipe 1 enters the distributor 2 through the air intake pipe 4, and the combustible mixture passing through the distributor 2 passes through the distribution pipe 5 and enters the pre-combustion chamber 6 through the check valve 8. The pre-combustion chamber 6 can be disposed opposite to the main combustion chamber, and the combustible mixture in the pre-combustion chamber 6 is ignited under the action of the spark plug 7, and the ignited combustible mixture enters the main combustion chamber to ignite the combustible mixture in the main combustion chamber.

[0056] In the design of this application, the intake pipe 1 is connected to the distributor 2 through the extraction pipe 4. The extraction pipe 4 can output the combustible mixed gas in the intake pipe 1 to the distributor 2, and then input it into the distribution pipe 5 through the distributor 2 and output it to the check valve 8 in the pre-combustion main body 3. Then, through the opening of the check valve 8, the combustible mixed gas flows to the pre-combustion chamber 6. Thus, it can be realized that the equivalent mixture can be taken from the intake pipe 1 as the scavenging working medium by using the pressure difference between the intake pipe 1 and the cylinder, providing an appropriate amount of combustible mixed gas for the pre-combustion chamber 6, and also realizing directional scavenging of the spark plug. At least part of the distribution pipe 5 has a disturbance section, and the disturbance section occupies a part of the distribution pipe 5 or even the entire distribution pipe 5. The purpose of setting the disturbance section is to enable the air flow to generate disturbance when flowing through the disturbance section, and the disturbed air flow can flow laterally, so as to realize the purging of the root part of the spark plug 7, especially the purging of the electrode position of the spark plug 7, thereby improving the scavenging efficiency, enabling the residual exhaust gas at the spark plug 7 part to be removed in a timely and thorough manner, making the combustion more complete, and reducing the exhaust temperature.

[0057] The distribution pipe 5 has various structural forms and is not limited by this application. Any of the following implementation manners can be adopted. Specifically:

[0058] As one of the preferred implementation manners, the distribution pipe 5 includes a disturbance section, and the disturbance section occupies the entire distribution pipe 5. In this implementation manner, disturbance can be realized throughout the whole process of the air flow passing through the distribution pipe 5, thereby enhancing the disturbance effect of the air flow, enabling the air flow output through the distribution pipe 5 to flow laterally, further purging the root part of the spark plug 7, and realizing the thorough removal of the residual exhaust gas near the spark plug 7.

[0059] As another preferred implementation manner, the distribution pipe 5 also has a straight-through section. The distribution pipe 5 includes a straight-through section and a disturbance section. The disturbance section is connected to the downstream side of the straight-through section. The disturbance section has an outlet, and the outlet is connected to the check valve 8. The straight-through section has an inlet, and the inlet is connected to the distributor 2. In this implementation manner, the distribution pipe 5 includes a straight-through section and a disturbance section. The straight-through section and the disturbance section are connected to form the whole distribution pipe 5. The disturbance section is connected to the downstream side of the straight-through section, and the outlet of the disturbance section can be connected to the check valve 8. The purpose is to make the disturbance section closer to the check valve 8, so that the disturbance effect of the air flow output from the check valve 8 to the vicinity of the spark plug 7 is better, thereby improving the scavenging effect of the root part of the spark plug 7, enabling the residual exhaust gas to be purged in a timely and thorough manner, making the combustion more complete, and reducing the exhaust temperature.

[0060] The disturbance section of the distribution pipe 5 has various structural forms, and the specific structure is not limited by this application. Any of the following implementation manners can be adopted:

[0061] Embodiment 1: The disturbance section of the distribution pipe 5 has a spiral pipe, and the spiral pipe includes a plurality of threaded pipes screwed along the axial direction to form a hollow twist drill type structure. Further, as a preferred embodiment, the number of threaded pipes is selected to be 3, as Figure 3 and Figure 4 shown, the spiral pipe 9 includes a first threaded pipe 91, a second threaded pipe 92 and a third threaded pipe 93. The first threaded pipe 91, the second threaded pipe 92 and the third threaded pipe 93 are screwed along the axial direction to form a hollow twist drill type structure; and the first threaded pipe 91, the second threaded pipe 92 and the third threaded pipe 93 are interconnected to form a hollow structure, so that the combustible mixed gas can form a vortex disturbance in the distribution pipe 5, and the gas forming the vortex can strengthen the purging of the root part of the spark plug 7.

[0062] Further, the ports formed by connecting a plurality of threaded pipes are in a petal structure; specifically, when the number of threaded pipes is selected to be three, that is, the first threaded pipe 91, the second threaded pipe 92 and the third threaded pipe 93 described above are adopted, the ports formed by connecting the first threaded pipe 91, the second threaded pipe 92 and the third threaded pipe 93 are in a clover-shaped structure; the clover-shaped structure increases the flow area of the combustible mixed gas and is evenly distributed in the circumferential direction, so that the combustible mixed gas can be output more evenly, further enhancing the flow of the combustible mixed gas to the root part of the spark plug 7, purging the root part of the spark plug 7, and further improving the combustion sufficiency and reducing the exhaust temperature.

[0063] Embodiment 2: As Figure 5 and Figure 6 shown, the disturbance section of the distribution pipe 5 has a corrugated pipe 10, and the corrugated pipe 10 includes a raised section 101 and a recessed section 102 connected alternately in sequence, and a guiding surface inclined inward at a preset angle is formed at the connection of the raised section 101 and the recessed section 102.

[0064] There is another embodiment for the structure of the disturbance section of the distribution pipe 5, that is, the disturbance section of the distribution pipe 5 is designed as a hollow corrugated pipe 10. The corrugated pipe 10 includes a raised section 101 and a recessed section 102, so that the corrugated pipe 10 forms an alternating concave and convex structure, and the internal air flow in the corrugated pipe 10 forms an air flow disturbance in the corrugated pipe 10; the end surface where the raised section 101 is connected to the recessed section 102 forms a guiding surface inclined inward at a preset angle, so that the air flow inside the corrugated pipe 10 flows along the guiding surface, further enhancing the gas flow disturbance effect, and can flow laterally to the root part of the spark plug 7 to purge the electrode position of the spark plug 7, realizing the complete removal of the residual waste gas.

[0065] Further, the cross-section of the recessed section 102 in the radial direction is in an arc shape.

[0066] As a preferred embodiment, the intake pipe 1 has a first air intake port, a second air intake port, and a third air intake port; the first air intake port is used to output a combustible mixture of fuel gas and air, the second air intake port is used to output a combustible mixed gas of fuel gas, air, and EGR gas, and the third air intake port is used to output a combustible mixed gas of fuel gas, air, and EGR gas.

[0067] By providing three different air intake ports and selecting the corresponding air intake port according to different requirements, where the first air intake port is used to output a combustible mixture of fuel gas and air, the second air intake port is used to output a combustible mixed gas of fuel gas, air, and EGR gas, and the third air intake port is used to output a combustible mixed gas of fuel gas, air, and EGR gas. The main difference between the second air intake port and the third air intake port lies in the different air intake port pressures and pipeline lengths. For example, the second air intake port can be located in the diffuser section behind the intake pipe, and the third air intake port can be located in the fully stabilized pressure section. The pressure at the second air intake port is slightly higher, and the mixing path of the third air intake port is long, resulting in a good gas mixing effect. The mixed gas obtained through the first air intake port, the second air intake port, or the third air intake port enters the distributor 2 through the intake pipe 4 and is connected to the following bushing assembly 31 of each cylinder through the distributor 2. A check valve 8 and a spark plug 7 are built into the bushing assembly 31. The mixed gas enters the pre-chamber 6 through the check valve 8 and is ignited by the spark plug 7 to work.

[0068] As a preferred embodiment, as Figure 1 and Figure 2 shown, the pre-chamber main body 3 includes a bushing assembly 31 and a pre-chamber main body 32; the bushing assembly 31 includes a spark plug bushing 311 and an ignition coil bushing 312 connected to each other; a spark plug 7 and a check valve 8 are connected inside the spark plug bushing 311; an ignition coil 11 is connected inside the ignition coil bushing 312; the pre-chamber main body 32 is connected below the bushing assembly 31, and a pre-chamber 6 is formed in the inner cavity of the pre-chamber main body 32.

[0069] During the intake stroke, under the dual action of the pressure difference force between the intake pipe 1 and the pre-chamber 6 and the gravity of the valve core of the check valve 8, the valve core moves downward. The combustible mixed gas in the intake pipe 1 enters the distributor 2 through the intake pipe 4, and the combustible mixed gas passing through the distributor 2 enters the pre-chamber 6 through the check valve 8 via the distribution pipe 5. The pre-chamber 6 can be arranged opposite to the main combustion chamber, and the combustible mixed gas in the pre-chamber 6 is ignited under the action of the spark plug 7.

[0070] In addition, when the disturbance section is connected to the downstream side of the DC section, the disturbance section has various embodiments. Specifically,

[0071] One of the embodiments is that one end of the disturbance section can extend out of the spark plug bushing 311 and partially extend into the ignition coil bushing 312;

[0072] In another embodiment, one end of the perturbation section can sequentially extend out of the spark plug bushing 311 and the ignition coil bushing 312.

[0073] By extending the perturbation section into the spark plug bushing 311 and connecting it to the one-way valve 8, the purpose is to enhance the perturbation effect of the combustible mixture entering the one-way valve 8, improve the scavenging ability of the combustible mixture flowing near the spark plug 7, and achieve a thorough cleaning of the residual exhaust gas at the root part of the spark plug 7. The purpose of being able to extend the perturbation section into the ignition coil bushing 312 or extend it outside the ignition coil bushing 312 is to be able to lengthen the length of the perturbation section, thereby increasing the area of the region affected by the airflow perturbation, further enhancing the perturbation effect, and achieving good purging of the root part of the spark plug 7.

[0074] This application also relates to an engine, which includes a turbocharger, a cylinder, and the above-mentioned engine pre-chamber system connected within the cylinder. The turbocharger includes a compressor and a turbine. The compressor is connected to the intake pipe 1 to supply air to the intake pipe 1, and the turbine is connected to the exhaust pipe of the cylinder for exhaust gas discharge.

[0075] The cylinder includes a cylinder block, a cylinder head, a piston, and a pre-chamber system. The cylinder head is located at the top of the cylinder block. The piston is arranged within the cylinder block and forms a main combustion chamber with the cylinder head. The piston is located below the pre-chamber system. The main combustion chamber is arranged opposite to the pre-chamber 6. The spark plug bushing 311 of the pre-chamber 6 is provided with spray holes, and the spray holes communicate the main combustion chamber with the pre-chamber 6. When the spark plug 7 can ignite the combustible mixture in the pre-chamber 6, the combustible mixture in the pre-chamber 6 flows into the main combustion chamber through the spray holes and further ignites the combustible mixture in the main combustion chamber. Those parts not described in this utility model can be realized by adopting or referring to the existing technologies.

[0076] Each embodiment in this specification is described in a progressive manner. For the same or similar parts among the embodiments, reference can be made to each other. Each embodiment focuses on the differences from other embodiments.

[0077] The above are only the embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, various modifications and changes can be made to the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the scope of the claims of the present utility model.

Claims

1. An engine pre-combustion chamber system, characterized in that: include: An air intake pipe (1), the air intake pipe (1) having at least one air intake port; A distributor (2), the distributor (2) comprising an air intake pipe (4) and a distribution pipe (5), the air intake pipe (4) being connected to the air intake port, and at least a portion of the distribution pipe (5) comprising a disturbance section, the disturbance section being configured to cause disturbance in the air flow when passing through the disturbance section, so that the air flow can purge the spark plug (7); A pre-combustion body (3) is formed with a pre-combustion chamber (6), a spark plug (7) and a one-way valve (8) are connected to the pre-combustion body (3), the spark plug (7) partially extends into the pre-combustion chamber (6), the one-way valve (8) is connected to the distribution pipe (5), and the one-way valve (8) can connect or disconnect the intake pipe (1) and the pre-combustion chamber (6).

2. An engine pre-combustion chamber system according to claim 1, characterized in that: The distribution pipe (5) also has a direct flow section; the disturbance section is connected to the downstream side of the direct flow section, the disturbance section has an output port, the output port is connected to the one-way valve (8), and the direct flow section has an input port, the input port is connected to the distributor (2).

3. An engine pre-combustion chamber system according to claim 1, characterized in that: The disturbance section of the distribution pipe (5) comprises a spiral pipe (9), wherein the spiral pipe (9) comprises a plurality of threaded pipes twisted along an axial direction to form a hollow twisted structure.

4. An engine pre-combustion chamber system according to claim 3, characterized in that: The port formed by connecting a plurality of the threaded tubes is in a petal structure.

5. The engine pre-combustion chamber system according to claim 1, characterized in that: The disturbance section of the distribution pipe (5) has a bellows (10), the bellows (10) comprising raised sections (101) and recessed sections (102) connected alternately in sequence, and a guide surface inclined inwardly at a preset angle is formed at the connection between the raised section (101) and the recessed section (102).

6. An engine pre-combustion chamber system according to claim 5, characterized in that: The cross section of the recessed section (102) along the radial direction is in an arc-shaped structure.

7. An engine pre-combustion chamber system according to claim 1, characterized in that: The air intake pipe (1) has a first air intake port, a second air intake port and a third air intake port; the first air intake port is used to output a combustible mixed gas of a mixture of fuel gas and air, the second air intake port is used to output a combustible mixed gas of a mixture of fuel gas, air and EGR gas, and the third air intake port is used to output a combustible mixed gas of a mixture of fuel gas, air and EGR gas.

8. An engine pre-combustion chamber system according to claim 1, characterized in that: The pre-combustion body (3) comprises a bushing assembly (31) and a pre-combustion chamber body (32); the bushing assembly (31) comprises a spark plug bushing (311) and an ignition coil bushing (312) connected to each other; a spark plug (7) and a one-way valve (8) are connected to the spark plug bushing (311); an ignition coil (11) is connected to the ignition coil bushing (312); the pre-combustion chamber body (32) is connected below the bushing assembly (31), and a pre-combustion chamber (6) is formed in the inner cavity of the pre-combustion chamber body (32).

9. An engine pre-combustion chamber system according to claim 8, characterized in that: One end of the disturbance section can extend out of the spark plug bushing (311) and partially extend into the ignition coil bushing (312); or, one end of the disturbance section can extend out of the spark plug bushing (311) and the ignition coil bushing (312) in sequence.

10. An engine, characterized in that: include: A turbocharger, a cylinder and an engine pre-combustion chamber system as described in any one of claims 1 to 9 connected to the cylinder, wherein the turbocharger comprises a compressor and a turbine, the compressor being connected to the intake pipe (1) for providing air to the intake pipe (1), and the turbine being connected to the exhaust pipe of the cylinder for exhausting exhaust gas.

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