Pre-chamber housing, pre-chamber jet ignition structure, cylinder head assembly and engine

Abstract

The utility model discloses a precombustion chamber casing, precombustion chamber jet flow ignition structure, cylinder cover assembly and engine relates to precombustion chamber ignition technical field, including casing main part, the first end inside of casing main part has precombustion chamber, the second end face of casing main part is seted up with injector inner core installation slot and electric heating device inner core installation slot, and the injector inner core installation slot and electric heating device inner core installation slot can all communicate with precombustion chamber, the injector inner core installation slot is used for fixed installation initiative fuel injector inner core, and the electric heating device inner core installation slot is used for fixed installation electric heating device inner core, the utility model discloses can adapt to the engine cylinder cover of small cylinder diameter, compact, simple, and the installation is simple, saves the cost.

Description

Technical Field

[0001] This utility model relates to the field of pre-combustion chamber ignition technology, and in particular to a pre-combustion chamber shell and a pre-combustion chamber jet ignition structure. Background Technology

[0002] The pre-combustion chamber is a secondary chamber in a partitioned combustion chamber that is connected to the main combustion chamber through a narrow passage. It is used to inject fuel for partial combustion.

[0003] Currently, pre-combustion chamber ignition technology is widely used in large-bore engines, but its large housing size makes it unsuitable for small- and medium-bore engines. Furthermore, in traditional designs, fuel injectors and glow plugs / spark plugs are typically mounted as separate units on the pre-combustion chamber, increasing overall structural complexity and manufacturing costs. Utility Model Content

[0004] The purpose of this utility model is to provide a pre-combustion chamber shell, a pre-combustion chamber jet ignition structure, a cylinder head assembly, and an engine to solve the problems existing in the prior art. It can be adapted to cylinder heads of small and medium-diameter engines, has a compact and simple structure, is easy to install, and saves costs.

[0005] To achieve the above objectives, this utility model provides the following solution: This utility model provides a pre-combustion chamber shell, including a shell body. The first end of the shell body has a pre-combustion chamber inside. The second end face of the shell body has an injector core mounting groove and an electric heating device core mounting groove. Both the injector core mounting groove and the electric heating device core mounting groove can communicate with the pre-combustion chamber. The injector core mounting groove is used to fix the active fuel injector core, and the electric heating device core mounting groove is used to fix the electric heating device core.

[0006] Preferably, a fuel passage is provided on the side wall of the housing body, one end of the fuel passage is used to communicate with the fuel supply passage of the engine cylinder head, and the other end of the fuel passage is used to communicate with the fuel inlet port of the active fuel injector core.

[0007] Preferably, the injector core mounting groove is used to form a detachable fixed and sealed connection with the active fuel injector core; the heating element core mounting groove is used to form a detachable fixed and sealed connection with the heating element core.

[0008] Preferably, the injector core mounting groove is used for threaded connection with the inner core of the active fuel injector; the heating element core mounting groove is used for threaded connection with the inner core of the heating element.

[0009] Preferably, the heating element inner core mounting groove is used to fix and install the glow plug inner core.

[0010] Preferably, the inner core mounting groove of the heating element is used to fix and install the spark plug inner core.

[0011] Preferably, the heating element inner core mounting groove has a mounting section and a clearance section. The mounting section is located between the clearance section and the pre-combustion chamber. The mounting section is used to fix the heating element inner core, and the clearance section is used to provide a channel for the heating element inner core to enter the mounting section from outside the housing body.

[0012] This utility model provides a pre-combustion chamber jet ignition structure, including an active fuel injector core, an electric heating device core, and a pre-combustion chamber shell as described above.

[0013] This utility model provides a cylinder head assembly, including an engine cylinder head and a pre-combustion chamber jet ignition structure as described above.

[0014] This utility model provides an engine, including the cylinder head assembly as described above.

[0015] The present invention achieves the following technical advantages over the prior art: The pre-combustion chamber housing, pre-combustion chamber jet ignition structure, cylinder head assembly, and engine provided by this utility model integrate the conventional active fuel injector mounting shell and electric heating element mounting shell with the pre-combustion chamber housing by creating an injector core mounting groove and an electric heating element core mounting groove on the second end face of the housing body. The injector core mounting groove is used to fix the active fuel injector core, and the electric heating element core mounting groove is used to fix the electric heating element core. The active fuel injector core and the electric heating element core are directly embedded in the housing body, thus integrating the conventional active fuel injector mounting shell and electric heating element mounting shell with the pre-combustion chamber housing into one unit. The pre-combustion chamber housing serves not only its own function but also as the mounting housing for the active fuel injector and the heating element. By eliminating the need for separate mounting housings for the active fuel injector and the heating element, the overall diameter of the pre-combustion chamber housing can be effectively reduced (by approximately 30% to 50%). This allows it to be adapted to cylinder heads of small and medium-diameter engines. The structure is compact and simple, easy to install, cost-effective, and reliable, expanding the application range of pre-combustion chamber ignition technology. Furthermore, the fuel and ignition systems have a high degree of integration and fast response speed. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1A schematic diagram of the pre-combustion chamber shell provided by this utility model; In the diagram: 1-Main body of the casing, 2-Pre-combustion chamber, 3-Injector core mounting slot, 4-Electric heating element core mounting slot, 5-Fuel passage, 6-Installation section, 7-Avoidance section. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] The purpose of this utility model is to provide a pre-combustion chamber shell, a pre-combustion chamber jet ignition structure, a cylinder head assembly, and an engine to solve the problems existing in the prior art. It can be adapted to cylinder heads of small and medium-diameter engines, has a compact and simple structure, is easy to install, and saves costs.

[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Example 1 like Figure 1 As shown, this embodiment provides a pre-combustion chamber shell, including a shell body 1. The first end of the shell body 1 has a pre-combustion chamber 2 inside. The second end face of the shell body 1 is provided with an injector core mounting groove 3 and an electric heating device core mounting groove 4. Both the injector core mounting groove 3 and the electric heating device core mounting groove 4 can communicate with the pre-combustion chamber 2. The injector core mounting groove 3 is used to fix the active fuel injector core, and the electric heating device core mounting groove 4 is used to fix the electric heating device core.

[0022] The pre-combustion chamber housing provided in this embodiment has an injector core mounting groove 3 and an electric heating element core mounting groove 4 on the second end face of the housing body 1. The injector core mounting groove 3 is used to fix the active fuel injector core, and the electric heating element core mounting groove 4 is used to fix the electric heating element core. The active fuel injector core and the electric heating element core are directly embedded in the housing body 1, realizing the integration of the conventional active fuel injector mounting shell and the electric heating element mounting shell with the pre-combustion chamber housing. The pre-combustion chamber housing has its own function and also serves as the active fuel injector mounting shell and the electric heating element mounting shell. It eliminates the need for separate settings for the conventional active fuel injector mounting shell and the electric heating element mounting shell, which can effectively reduce the overall diameter of the pre-combustion chamber housing (by about 30% to 50%). This allows it to be adapted to the cylinder heads of small and medium-diameter engines. The structure is compact and simple, easy to install, saves costs, improves reliability, and expands the application range of pre-combustion chamber ignition technology. In addition, the fuel and ignition system have a high degree of integration and fast response speed.

[0023] As a preferred embodiment of this invention, a fuel passage 5 is provided on the side wall of the housing body 1. One end of the fuel passage 5 is used to communicate with the fuel supply passage of the engine cylinder head, and the other end of the fuel passage 5 is used to communicate with the fuel inlet port of the active fuel injector core, so as to achieve a high degree of integration between the fuel passage 5 and the active fuel injector core, resulting in a compact and simple structure.

[0024] In a preferred embodiment of this invention, the injector core mounting groove 3 is used to form a detachable fixed and sealed connection with the active fuel injector core; the heating element core mounting groove 4 is used to form a detachable fixed and sealed connection with the heating element core for easy replacement.

[0025] As a preferred embodiment of this invention, the injector core mounting groove 3 is used for threaded connection with the inner core of the active fuel injector; the heating element core mounting groove 4 is used for threaded connection with the inner core of the heating element, which facilitates manufacturing and use.

[0026] As an optional implementation method in this embodiment, the injector core mounting groove 3 and the active fuel injector core can also be connected by a fixed bracket; the electric heating element core mounting groove 4 and the electric heating element core can also be connected by a fixed bracket.

[0027] As an optional implementation method in this embodiment, both the injector core mounting groove 3 and the electric heating element core mounting groove 4 are provided with sealing rings to achieve sealed installation of the active fuel injector core and the electric heating element core.

[0028] In this embodiment, the heating element inner core mounting groove 4 is used to fix and install the spark plug inner core.

[0029] As a preferred embodiment of this example, the heating element inner core mounting groove 4 has a mounting section 6 and a clearance section 7. The mounting section 6 is located between the clearance section 7 and the pre-combustion chamber 2. The mounting section 6 is used to fix the heating element inner core, and the clearance section 7 is used to provide a channel for the heating element inner core to enter the mounting section 6 from outside the housing body 1, which facilitates assembly.

[0030] Example 2 This embodiment provides a pre-combustion chamber housing, which differs from the pre-combustion chamber housing in Embodiment 1 only in that the heating element inner core mounting groove 4 is different. In this embodiment, the heating element inner core mounting groove 4 is used to fix and install the glow plug inner core.

[0031] Example 3 This embodiment provides a pre-combustion chamber jet ignition structure, including an active fuel injector core, an electric heating element core, and a pre-combustion chamber shell as described in Embodiment 1 or Embodiment 2. The nozzle of the active fuel injector core can jet into the pre-combustion mixture area within the pre-combustion chamber 2. The heating end of the electric heating element core is embedded in the electric heating element core mounting groove 4 and contacts the mixture in the pre-combustion chamber 2 to achieve electric heating or spark ignition. An electrode wiring interface is provided at one end of the electric heating element core away from the heating end, through which an external lead wire is connected to facilitate instantaneous heating and control. It should be noted that the active fuel injector core in this embodiment can directly use an existing fuel injector core, and this embodiment does not involve any improvement to the fuel injector core. Similarly, the electric heating element core in this embodiment can directly use an existing electric heating element core, and this embodiment does not involve any improvement to the electric heating element core. The fuel channel 5 path, the type of electric heating element core, and the model of the active fuel injector core can be optimized or replaced according to actual needs.

[0032] The pre-combustion chamber jet ignition structure provided in this embodiment has an injector core mounting groove 3 and an electric heating element core mounting groove 4 on the second end face of the housing body 1. The injector core mounting groove 3 is used to fix the active fuel injector core, and the electric heating element core mounting groove 4 is used to fix the electric heating element core. The active fuel injector core and the electric heating element core are directly embedded in the housing body 1, realizing the integration of the conventional active fuel injector mounting shell and electric heating element mounting shell with the pre-combustion chamber housing. The pre-combustion chamber housing has its own function and also serves as the active fuel injector mounting shell and electric heating element mounting shell. The separate setting of the conventional active fuel injector mounting shell and electric heating element mounting shell is eliminated, which can effectively reduce the overall diameter of the pre-combustion chamber housing (by about 30% to 50%), thereby adapting to the cylinder head of small and medium-diameter engines. The structure is compact and simple, easy to install, saves costs, improves reliability, and expands the application range of pre-combustion chamber ignition technology. In addition, the fuel and ignition system have a high degree of integration and fast response speed.

[0033] Example 4 This embodiment provides a cylinder head assembly, including an engine cylinder head and a pre-combustion chamber jet ignition structure as described in Embodiment 3. The pre-combustion chamber jet ignition structure can be matched with the reserved holes in the cylinder head of a small- or medium-diameter engine.

[0034] Example 5 This embodiment provides an engine, including the cylinder head assembly of Embodiment 4.

[0035] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A pre-combustion chamber shell, characterized in that: The device includes a housing body. The first end of the housing body has a pre-combustion chamber. The second end face of the housing body has an injector core mounting slot and an electric heating element core mounting slot. Both the injector core mounting slot and the electric heating element core mounting slot can communicate with the pre-combustion chamber. The injector core mounting slot is used to fix the active fuel injector core, and the electric heating element core mounting slot is used to fix the electric heating element core.

2. The pre-combustion chamber shell according to claim 1, characterized in that: A fuel passage is provided on the side wall of the housing body. One end of the fuel passage is used to communicate with the fuel supply passage of the engine cylinder head, and the other end of the fuel passage is used to communicate with the fuel inlet port of the active fuel injector core.

3. The pre-combustion chamber shell according to claim 1, characterized in that: The injector core mounting groove is used to form a detachable fixed and sealed connection with the active fuel injector core; the heating element core mounting groove is used to form a detachable fixed and sealed connection with the heating element core.

4. The pre-combustion chamber shell according to claim 3, characterized in that: The injector core mounting slot is used for threaded connection with the active fuel injector core; the heating element core mounting slot is used for threaded connection with the heating element core.

5. The pre-combustion chamber shell according to claim 1, characterized in that: The inner core mounting groove of the heating device is used to fix and install the inner core of the heating plug.

6. The pre-combustion chamber shell according to claim 1, characterized in that: The inner core mounting groove of the heating element is used to fix and install the spark plug inner core.

7. The pre-combustion chamber shell according to claim 1, characterized in that: The heating element inner core mounting groove has a mounting section and a clearance section. The mounting section is located between the clearance section and the pre-combustion chamber. The mounting section is used to fix the heating element inner core, and the clearance section is used to provide a channel for the heating element inner core to enter the mounting section from outside the housing body.

8. A pre-combustion chamber jet ignition structure, characterized in that: It includes an active fuel injector core, an electric heating element core, and a pre-combustion chamber shell as described in any one of claims 1 to 7.

9. A cylinder head assembly, characterized in that: It includes the engine cylinder head and the pre-combustion chamber jet ignition structure as described in claim 8.

10. An engine, characterized in that: Includes the cylinder head assembly as described in claim 9.

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