Gasoline engine device with pre-combustion structure

Abstract

The gasoline engine device with the pre-combustion structure comprises a gasoline engine pre-combustion chamber body, a mounting groove is formed in the top of the gasoline engine pre-combustion chamber body, a spark plug is connected into the mounting groove, limiting clamping blocks are fixedly connected to the two sides of the spark plug respectively, a built-in annular groove is formed in the top of the gasoline engine pre-combustion chamber body, and the built-in annular groove is connected with the spark plug. The inner bottom face of the built-in annular groove is fixedly connected with one ends of a plurality of springs, and the other ends of the springs are fixedly connected with the sliding annular plate. According to the utility model, through the arrangement of the limiting clamping block, the built-in annular groove, the through opening, the limiting clamping groove, the sliding arc-shaped groove, the sliding annular plate, the spring and the like, the spark plug can be conveniently disassembled or replaced and installed after the spark plug of the pre-combustion chamber breaks down or the service time reaches a certain time limit; daily maintenance, overhaul, disassembly and replacement of the spark plug of the pre-combustion chamber are facilitated, use is convenient, and use cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of gasoline engines, in particular to a gasoline engine device with a pre-combustion structure. Background Art

[0002] A gasoline engine is an internal combustion engine that uses gasoline as fuel and generates power by burning gasoline. With the tightening of emission regulations and the impact of new energy technologies, traditional internal combustion engines need to further improve combustion efficiency. The use of lean combustion technology can reduce fuel consumption and improve thermal efficiency. However, the lean combustion ring changes greatly and combustion is prone to misfire. In order to improve the lean combustion limit and combustion stability, the pre-combustion chamber technology is used to form a stable flame propagation in the pre-combustion chamber, and the jet in the pre-combustion chamber is ignited by the spark plug. The flame is injected into the main combustion chamber through the spray hole of the pre-combustion chamber, igniting the terminal mixture to achieve stable combustion.

[0003] For example, the Chinese utility model patent with the authorization announcement number CN219492388U discloses an engine pre-combustion structure, an engine and a vehicle. The engine pre-combustion structure includes a nozzle assembly, the nozzle assembly includes a first shell and a second shell, the first shell forms a pre-combustion chamber inside, and the second shell is arranged outside the first shell; the first shell is provided with a first injection hole, the second shell is provided with a second injection hole, and at least one of the first injection hole and the second injection hole is multiple; the first shell can rotate relative to the second shell to change the connection state between the first injection hole and the second injection hole, so as to adjust the total injection area or injection angle of the pre-combustion chamber.

[0004] However, the existing gasoline engine pre-combustion structure ignites the jet in the pre-combustion chamber through a spark plug. The spark plug is arranged at a position of the engine body opposite to the first opening and is integrally formed with the pre-combustion chamber. When a failure occurs or the usage time reaches a certain limit, the spark plug needs to be removed or replaced and installed again, which is inconvenient for daily maintenance, inspection, removal and replacement of the spark plug.

[0005] For this reason, we propose a gasoline engine device with a pre-combustion structure to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a gasoline engine device with a pre-combustion structure to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a gasoline engine device with a pre-combustion structure, comprising a gasoline engine pre-combustion chamber body, a mounting groove is provided on the top of the gasoline engine pre-combustion chamber body, a spark plug is connected in the mounting groove, and limit blocks are fixedly connected to both sides of the spark plug;

[0008] A built-in annular groove is provided in the top of the gasoline engine pre-combustion chamber body, one end of a plurality of springs is fixedly connected to the bottom surface of the built-in annular groove, the other end of the spring is fixedly connected to the sliding annular plate, through openings are respectively provided at both ends of the top surface of the built-in annular groove, the limit card block is slidably connected to the through openings, the limit card block contacts the sliding annular plate, the limit card block is movably connected to the built-in annular groove, and limit card grooves are respectively provided at both ends of the top surface of the built-in annular groove, and the limit card block is clamped in the limit card grooves.

[0009] Preferably, limiting grooves are respectively provided on both sides of the built-in annular groove, limiting blocks are respectively fixed on both sides of the sliding annular plate, and the limiting blocks are slidably connected to the limiting grooves.

[0010] Preferably, sliding arc grooves are respectively provided at both ends of the top surface of the gasoline engine pre-combustion chamber body, the limiting block is slidably connected to the sliding arc groove, and the sliding arc groove, the through opening and the built-in annular groove are internally communicated.

[0011] Preferably, a precombustion cavity is provided in the precombustion chamber body of the gasoline engine.

[0012] Preferably, a spray hole is provided in the bottom of the gasoline engine pre-combustion chamber body, and the pre-combustion chamber and the spray hole are internally connected.

[0013] Preferably, the mounting groove and the interior of the pre-combustion chamber are connected.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model provides a limit card block, a built-in annular groove, a through port, a limit card groove, a sliding arc groove, a sliding annular plate, a spring, etc., so that the spark plug can be easily disassembled or replaced when a pre-combustion chamber spark plug fails or has been used for a certain period of time. The utility model is convenient for daily maintenance, inspection, disassembly and replacement of the pre-combustion chamber spark plug, is easy to use, and reduces the cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0018] Figure 3 It is a schematic diagram of the side cross-sectional structure of the utility model;

[0019] Figure 4 It is a schematic diagram of the local structure of the utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the utility model from another perspective;

[0021] Figure 6It is a schematic diagram of the split structure of the utility model.

[0022] In the figure: 1. gasoline engine pre-combustion chamber body; 2. spark plug; 3. pre-combustion chamber; 4. spray hole; 5. mounting groove; 6. limit block; 7. built-in annular groove; 71. limit groove; 8. through port; 9. spring; 10. sliding annular plate; 101. limit block; 11. limit slot; 12. sliding arc groove. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0024] See also Figure 1-6 , which is the first embodiment of the utility model. The utility model provides a technical solution: a gasoline engine device with a pre-combustion structure, comprising a gasoline engine pre-combustion chamber body 1, a mounting groove 5 is provided on the top of the gasoline engine pre-combustion chamber body 1, a spark plug 2 is connected in the mounting groove 5, and limit blocks 6 are fixedly connected to both sides of the spark plug 2;

[0025] A built-in annular groove 7 is provided in the top of the gasoline engine pre-combustion chamber body 1. The bottom surface of the built-in annular groove 7 is fixedly connected to one end of a plurality of springs 9. The other end of the spring 9 is fixedly connected to a sliding annular plate 10. The rigidity coefficient of the spring 9 is relatively large, and the deformation is relatively small under the action of external force. Through-holes 8 are respectively provided at both ends of the top surface of the built-in annular groove 7. The limit card block 6 is slidably connected to the through-hole 8. The limit card block 6 contacts the sliding annular plate 10. The limit card block 6 is movably connected to the built-in annular groove 7. The two ends of the top surface of the built-in annular groove 7 are respectively provided with limit card grooves 11. The limit card block 6 is clamped to the limit card groove 11. When the spark plug 2 needs to be removed, the spark plug 2 is pressed down with an installation tool, and the limit is limited by the limit groove 71. After being pressed down to a suitable position, the bottom 6 of the limit card block is separated from the limit card groove 11 and enters the built-in annular groove 7. The spark plug 2 is reversed by 90 degrees, and the limit card block 6 is driven to rotate by 90 degrees, so that the limit card block 6 pops out at the position corresponding to the through-hole 8 to remove the spark plug 2. Example

[0026] See also Figure 1-6 , which is the second embodiment of the utility model. This embodiment is based on the previous embodiment. Limiting grooves 71 are respectively opened on both sides of the built-in annular groove 7, and limiting blocks 101 are respectively fixed on both sides of the sliding annular plate 10. The limiting blocks 101 are slidably connected to the limiting grooves 71, which can limit the sliding range of the sliding annular plate 10, facilitate the control of the position range of the limiting block 6 moving downward, and facilitate the installation of the spark plug 2.

[0027] Sliding arc grooves 12 are respectively provided at both ends of the top surface of the gasoline engine pre-combustion chamber body 1, and the limiting block 6 is slidably connected to the sliding arc groove 12. The sliding arc groove 12, the through port 8, and the built-in annular groove 7 are internally connected. By setting the sliding arc groove 12, it is convenient to control the spark plug 2 and the limiting block 6 to rotate ninety degrees to prevent position displacement.

[0028] A pre-combustion chamber 3 is provided in a pre-combustion chamber body 1 of a gasoline engine.

[0029] A spray hole 4 is provided at the bottom of the gasoline engine pre-combustion chamber body 1. In the ignition system of the gasoline engine, the spark plug 2 plays a very important role. It can introduce high voltage electricity into the cylinder body and generate electric sparks between the electrode gaps of the spark plug 2. During ignition, the electric sparks generated between the electrode gaps of the spark plug 2 ignite the natural gas in the pre-combustion chamber 3, and the flame can be ejected from the spray hole 4 at the bottom of the pre-combustion chamber 3, thereby igniting the natural gas in the cylinder body. The pre-combustion chamber 3 and the spray hole 4 are internally connected.

[0030] The interior of the mounting groove 5 and the pre-combustion chamber 3 are communicated. Example

[0031] See also Figure 1-6 , which is the third embodiment of the utility model. This embodiment is based on the above two embodiments. When the utility model is actually used, when installing the spark plug 2, use the installation tool to put the limit blocks 6 set on both sides of the spark plug 2 into the corresponding openings 8, and the bottom of the spark plug 2 enters the installation groove 5 accordingly. Press the spark plug 2 downward so that the limit block 6 slides in the opening 8 and the bottom surface of the limit block 6 contacts the sliding annular plate 10. Continue to press down so that the sliding annular plate 10 slides in the built-in annular groove 7 and squeezes the spring 9. Press down to a suitable position, and the limit block 6 enters the built-in annular groove 7, the spark plug 2 can be rotated 90 degrees, driving the limit card block 6 to rotate 90 degrees, and the spark plug 2 is released after rotation, so that the limit card blocks 6 arranged on both sides of the spark plug 2 are correspondingly inserted into the limit card grooves 11 arranged on the top surface of the built-in annular groove 7, and the spark plug 2 can be installed. It is also convenient to disassemble or replace the spark plug 2 when the pre-combustion chamber spark plug 2 fails or the use time reaches a certain time limit, and the daily maintenance, inspection, disassembly and replacement of the pre-combustion chamber spark plug 2 are convenient, and the use cost is reduced.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art 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 appended claims and their equivalents.

Claims

1. A gasoline engine device with a pre-combustion structure, comprising a gasoline engine pre-combustion chamber body (1), characterized in that: A mounting groove (5) is provided on the top of the gasoline engine pre-combustion chamber body (1), a spark plug (2) is connected to the mounting groove (5), and limiting clamping blocks (6) are respectively fixedly connected to both sides of the spark plug (2); A built-in annular groove (7) is provided in the top of the gasoline engine pre-combustion chamber body (1); one end of a plurality of springs (9) is fixedly connected to the bottom surface of the built-in annular groove (7); the other end of the spring (9) is fixedly connected to a sliding annular plate (10); through openings (8) are respectively provided at both ends of the top surface of the built-in annular groove (7); the limit clamping block (6) is slidably connected to the through openings (8); the limit clamping block (6) contacts the sliding annular plate (10); the limit clamping block (6) is movably connected to the built-in annular groove (7); limit clamping grooves (11) are respectively provided at both ends of the top surface of the built-in annular groove (7); the limit clamping block (6) is clamped to the limit clamping grooves (11).

2. A gasoline engine device with a pre-combustion structure according to claim 1, characterized in that: Limiting grooves (71) are respectively provided on both sides of the built-in annular groove (7), and limiting blocks (101) are respectively fixedly connected on both sides of the sliding annular plate (10), and the limiting blocks (101) are slidably connected to the limiting grooves (71).

3. A gasoline engine device with a pre-combustion structure according to claim 1, characterized in that: The two ends of the top surface of the gasoline engine pre-combustion chamber body (1) are respectively provided with sliding arc grooves (12); the limit block (6) is slidably connected to the sliding arc groove (12); and the sliding arc groove (12), the through opening (8), and the built-in annular groove (7) are internally connected.

4. A gasoline engine device with a pre-combustion structure according to claim 1, characterized in that: A pre-combustion cavity (3) is provided in the gasoline engine pre-combustion chamber body (1).

5. A gasoline engine device with a pre-combustion structure according to claim 4, characterized in that: A spray hole (4) is provided in the bottom of the gasoline engine pre-combustion chamber body (1), and the pre-combustion chamber (3) and the spray hole (4) are internally connected.

6. A gasoline engine device with a pre-combustion structure according to claim 5, characterized in that: The installation groove (5) and the pre-combustion chamber (3) are internally communicated.

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