CN217898058U

CN217898058U - Spark plug of engine, engine and vehicle

Info

Publication number: CN217898058U
Application number: CN202222491871.0U
Authority: CN
Inventors: 孙庭印; 陈殿春; 曹思雨; 杨跃滨
Original assignee: Great Wall Motor Co Ltd
Current assignee: Great Wall Motor Co Ltd
Priority date: 2022-09-20
Filing date: 2022-09-20
Publication date: 2022-11-25
Anticipated expiration: 2032-09-20

Abstract

The utility model provides a spark plug, engine and vehicle of engine, the spark plug of engine includes: a spark plug body, one end of which is provided with a first ignition electrode; the casing, the casing cover is located the outside of spark plug main part and is formed with the precombustion chamber, and first ignition electrode stretches into the precombustion chamber, and the casing has first location structure, with first ignition electrode complex second ignition electrode and flame spout, first location structure be suitable for with the cylinder cap location cooperation of engine with the assembly angle of restriction casing, be suitable for between first ignition electrode and the second ignition electrode and produce the electric spark. Therefore, compared with the prior art, under the condition that the engine outputs the same power, the spark plug can reduce the fuel consumption of the engine, thereby improving the fuel economy of a vehicle.

Description

Spark plug of engine, engine and vehicle

Technical Field

The utility model relates to a vehicle technical field, in particular to spark plug, an engine and a vehicle of an engine.

Background

In the related art, when the conventional spark plug with the precombustion chamber is installed in a combustion chamber of an engine, the combustion condition of the mixture in the combustion chamber is affected by the generation direction of an electric spark in the precombustion chamber and the assembly angle of the spark plug, so that the fuel consumption of the engine is increased, and the fuel economy of a vehicle is affected.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention is directed to a spark plug for an engine, which can reduce the fuel consumption of the engine when the engine outputs the same amount of power, thereby improving the fuel economy of a vehicle.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a spark plug for an engine comprising: a spark plug body having a first ignition electrode mounted at one end thereof; the casing, the casing cover is located the outside of spark plug main part just is formed with the precombustion chamber, first ignition electrode stretches into the precombustion chamber, the casing have first location structure, with first ignition electrode complex second ignition electrode and flame spout, first location structure be suitable for with the cylinder cap location fit of engine is in order to restrict the assembly angle of casing, first ignition electrode with be suitable for between the second ignition electrode and produce the electric spark, the flame spout with the precombustion chamber intercommunication.

In some examples of the invention, the first locating feature is located at an end of the housing remote from the flame ports.

In some examples of the invention, the first positioning structure is configured as a first positioning groove adapted to correspond to a second positioning groove of the cylinder head.

In some examples of the invention, the first positioning structure is at least one.

In some examples of the present invention, the spark plug body defines an installation space, a part of the structure of the first ignition electrode extends into the installation space, an insulating member is provided between the first ignition electrode and the spark plug body, and the spark plug body is electrically connected to the housing.

In some examples of the invention, the housing is configured as a metal piece.

In some examples of the invention, the second ignition electrode is configured as at least part of the structure of the housing.

In some examples of the present invention, the flame ports are a plurality of flame ports spaced apart in a circumferential direction of the housing.

Compared with the prior art, the spark plug of the engine has the following advantages:

according to the utility model discloses a spark plug of engine is through setting up the assembly angle of first location structure in order to fix a position spark plug on the casing to set up the second ignition electrode in the production direction of casing electric spark in order to restrict the precombustor, compare with prior art, under the condition of the power of the same size of engine output, the fuel use amount of engine can be reduced to the spark plug of this application, thereby can improve the fuel economy of vehicle.

Another object of the present invention is to provide an engine.

an engine comprises the spark plug of the engine.

according to the utility model discloses an engine, spark plug are installed to the engine, through the assembly angle that sets up first location structure in order to fix a position spark plug on the casing to set up second ignition electrode in the production direction of casing electric spark in order to restrict the precombustion chamber, compare with prior art, under the condition of the power of engine output equidimension, the fuel use amount of engine still less, thereby can improve the fuel economy of vehicle.

Another object of the present invention is to provide a vehicle.

a vehicle comprises the engine.

The vehicle has the same advantages of the engine compared with the prior art, and the detailed description is omitted.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

FIG. 1 is a partial cross-sectional view of a spark plug according to an embodiment of the present invention;

FIG. 2 is a schematic view of a spark plug body according to an embodiment of the present invention;

fig. 3 is a schematic view illustrating the housing according to the embodiment of the present invention mounted on the cylinder head;

fig. 4 is a schematic view of the first positioning structure and the mounting hole in cooperation according to an embodiment of the present invention.

Description of reference numerals:

a spark plug 100;

a spark plug main body 10; a first ignition electrode 101; an installation space 102;

a housing 20; a prechamber 201; a first positioning structure 202; a second ignition electrode 203; a flame port 204;

a cylinder head 30; a second positioning groove 301; mounting holes 302.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1-4, according to the spark plug 100 of the engine according to the embodiment of the present invention, the spark plug 100 is installed in a combustion chamber of the engine, a cylinder head 30 and a cylinder body of the engine together define the combustion chamber, specifically, the spark plug 100 may be installed in the cylinder head 30, the spark plug 100 may ignite a mixture gas in the combustion chamber, it should be noted that the mixture gas in the combustion chamber includes a fuel gas and air, and by igniting the mixture gas, the mixture gas may be ignited to enable the engine to output power.

According to the embodiment of the present invention, the spark plug 100 includes: a spark plug body 10 and a housing 20. The spark plug body 10 has a first ignition electrode 101 mounted at one end thereof, and in some specific embodiments, the first ignition electrode 101 may be configured as a positive ignition electrode, and the first ignition electrode 101 may be connected to a positive power supply in the vehicle.

The housing 20 is covered on the outer side of the spark plug main body 10 and forms a precombustion chamber 201, the precombustion chamber 201 is communicated with a combustion chamber of the engine, the first ignition electrode 101 extends into the precombustion chamber 201, the mixture in the combustion chamber can enter the precombustion chamber 201, the spark plug 100 can ignite the mixture in the precombustion chamber 201, and the ignited mixture in the precombustion chamber 201 can ignite the mixture in the combustion chamber. The casing 20 has first location structure 202, with the second ignition electrode 203 and the flame spout 204 of first ignition electrode 101 complex, flame spout 204 and precombustion chamber 201 intercommunication, and flame spout 204 extends in the combustion chamber, and the gas mixture in the combustion chamber can get into precombustion chamber 201 through flame spout 204, and the gas mixture in precombustion chamber 201 is lighted the back, and flame can spout 204 from flame, and then the gas mixture in the combustion chamber can be lighted to the flame that flame spout 204 spouts.

Preferably, the second ignition electrode 203 may be configured as a negative ignition electrode, the second ignition electrode 203 may be connected to or grounded to a negative electrode of a power supply in the vehicle, the second ignition electrode 203 is disposed at a distance from the first ignition electrode 101, that is, the second ignition electrode 203 and the first ignition electrode 101 have a gap therebetween, when the first ignition electrode 101 is energized and a voltage between the second ignition electrode 203 and the first ignition electrode 101 is large, the gap between the second ignition electrode 203 and the first ignition electrode 101 may be broken down by an electric current, an electric spark may be generated between the first ignition electrode 101 and the second ignition electrode 203, and the electric spark may ignite the mixture in the prechamber 201 after contacting the mixture in the prechamber 201, thereby enabling the spark plug 100 to ignite the mixture in the combustion chamber.

The first positioning structure 202 is suitable for being in positioning fit with the cylinder cover 30 of the engine to limit the assembly angle of the shell 20, specifically, in the process of installing the spark plug 100 in a plurality of combustion chambers of the engine, when the shells 20 are sequentially assembled on the cylinder cover 30, the first positioning structure 202 of each shell 20 is in positioning fit with the cylinder cover 30 by rotating each shell 20, the assembly angle of each shell 20 can reach a preset assembly angle, so that the flame spraying direction of the flame nozzle 204 arranged on each shell 20 can reach a preset angle, the combustion effect of mixed gas in each combustion chamber can be improved, the fuel consumption of the engine can be effectively reduced, and the fuel economy of a vehicle is improved. Meanwhile, when the second ignition electrode 203 is arranged at the preset position of the housing 20, when the first positioning structure 202 of the housing 20 is in positioning fit with the cylinder head 30 and the assembly angle of the housing 20 reaches the preset assembly angle, the second ignition electrode 203 and the first ignition electrode 101 can be both located at the preset position of the combustion chamber, and when the first ignition electrode 101 is electrified, the mixed gas in the precombustion chamber 201 can be ignited at the preset ignition angle, so that the combustion effect of the mixed gas in the combustion chamber can be further improved, the fuel consumption of the engine can be further reduced, and the fuel economy of the vehicle can be improved.

Thus, by providing the first positioning structure 202 on the housing 20 to position the fitting angle of the spark plug 100 and providing the second ignition electrode 203 on the housing 20 to limit the direction of generation of the electric spark in the prechamber 201, the spark plug 100 of the present application can reduce the fuel consumption of the engine and improve the fuel economy of the vehicle in comparison with the prior art in the case where the engine outputs the same amount of power.

In some embodiments of the present invention, as shown in fig. 1, the first positioning structure 202 is disposed at an end of the housing 20 away from the flame ports 204. Wherein, the one end that flame spout 204 was kept away from to casing 20 is used for being connected with cylinder cap 30 cooperation, particularly, cylinder cap 30 is provided with the mounting hole 302 that is used for installing casing 20, the one end that flame spout 204 was kept away from to casing 20 can stretch into in the mounting hole 302, and casing 20 can with mounting hole 302 interference fit, before casing 20 and mounting hole 302 assembly target in place, through first location structure 202 and cylinder cap 30 location fit, can adjust casing 20's assembly angle to predetermined assembly angle, then put casing 20 and mounting hole 302 assembly in place, casing 20 is connected with mounting hole 302 cooperation and can prevent casing 20 relative cylinder cap 30 rotation, thereby can avoid the location inefficacy between first location structure 202 and the cylinder cap 30.

In some embodiments of the present invention, as shown in fig. 1 and 4, the first positioning structure 202 may be configured as a first positioning groove, and the first positioning groove is adapted to correspond to the second positioning groove 301 of the cylinder head 30. Specifically, the second positioning groove 301 may be provided on the hole wall of the mounting hole 302, the opening of the second positioning groove 301 may be open toward the cylinder head 30, the first positioning groove may be open toward one end of the casing 20 away from the flame ports 204 in the axial direction (i.e., up-down direction in fig. 1) of the spark plug 100, and the first positioning groove may be open toward the outside of the spark plug 100 in the radial direction of the spark plug 100.

Through the position processing first constant head tank in the presetting of casing 20, and at the position processing second constant head tank 301 in the presetting of cylinder cap 30, at the in-process that casing 20 and mounting hole 302 cooperation are connected, rotate when first constant head tank and just right when setting up with second constant head tank 301, installation frock (for example round pin axle or mounting panel) can stretch into in first constant head tank and the second constant head tank 301 simultaneously, the end of opening of first constant head tank can be just right so that the installation frock passes the clearance between first constant head tank and the second constant head tank 301 with the end of opening of second constant head tank 301, first constant head tank can drive casing 20 and rotate to first constant head tank and just right with second constant head tank 301 relatively, casing 20 can rotate to predetermine assembly angle this moment, thereby can realize first location structure 202 and the technological effect of cylinder cap 30 location cooperation in order to restrict casing 20's assembly angle. Further, the installation frock can end with the cell wall of first constant head tank and the cell wall of second constant head tank 301 simultaneously, so can avoid staggering the setting between first constant head tank and the second constant head tank 301 to can improve casing 20's assembly angle's precision. It should be noted that, after the housing 20 is installed in place in the installation hole 302, the installation tool can be taken out of the installation hole 302.

In some embodiments of the present invention, as shown in fig. 1, there is at least one first positioning structure 202. In the embodiment shown in fig. 1, there is one first positioning structure 202, and there may be one installation tool used in cooperation with the first positioning structure 202, at this time, the technical effect of limiting the assembly angle of the housing 20 may be satisfied by positioning and matching the first positioning structure 202 and the cylinder head 30, and meanwhile, there are fewer installation tools that need to be operated by an assembler or a robot arm, so that the assembly process may be simplified. Of course, in other specific embodiments, the first positioning structure 202 may be multiple, so as to improve the assembling precision between the housing 20 and the cylinder head 30, and further improve the ignition effect of the spark plug 100.

In some embodiments of the present invention, as shown in fig. 1 and fig. 2, the spark plug main body 10 defines an installation space 102, the installation space 102 may extend along an axial direction (i.e., a vertical direction in fig. 1) of the spark plug main body 10, and the installation space 102 may penetrate through the spark plug main body 10, a part of the structure of the first ignition electrode 101 extends into the installation space 102, wherein one end of the spark plug main body 10, which is far away from the first ignition electrode 101, may be provided with a connection terminal, which is used for being connected to a power supply positive electrode of a vehicle, and the connection terminal may be electrically connected to a part of the structure of the first ignition electrode 101, which extends into the installation space 102, so that an electric circuit may be formed between the first ignition electrode 101 and the power supply positive electrode of the vehicle, another part of the structure of the first ignition electrode 101 extends into the prechamber 201, and the first ignition electrode 101 is adapted to cooperate with the second ignition electrode 203 to form an electric spark in the prechamber 201.

Further, an insulating member may be provided between the first ignition electrode 101 and the spark plug body 10, and the insulating member may space the first ignition electrode 101 from the spark plug body 10, so that the first ignition electrode 101 may be prevented from contacting the spark plug body 10 to electrically connect the first ignition electrode 101 and the spark plug body 10. The spark plug body 10 may be electrically connected or grounded to the negative power supply of the vehicle, and the first ignition electrode 101 may be prevented from being short-circuited by being directly electrically connected or grounded to the negative power supply of the vehicle by spacing the first ignition electrode 101 from the spark plug body 10 by an insulator. Meanwhile, the spark plug main body 10 is electrically connected with the housing 20, and the housing 20 is electrically connected with the second ignition electrode 203, that is, the second ignition electrode 203 can be electrically connected with the negative power supply of the vehicle through the spark plug main body 10 or grounded, so that a complete electric circuit can be formed between the first ignition electrode 101 and the second ignition electrode 203, and when the first ignition electrode 101 is electrified, an electric spark can be generated between the first ignition electrode 101 and the second ignition electrode 203 to ignite the mixture gas in the prechamber 201.

In some embodiments of the present invention, the housing 20 may be configured as a metal piece. By configuring the housing 20 as a metal piece, the housing 20 can have physical properties of electrical conductivity, so that the housing 20 and the second ignition electrode 203 can be both electrically conductive after the housing 20 and the spark plug main body 10 are in contact, and the technical effect of electrically connecting the second ignition electrode 203 and the spark plug main body 10 through the housing 20 can be achieved. Also, constructing the housing 20 as a metal piece may increase the structural strength of the housing 20, which may reduce the probability of damage to the housing 20, which may effectively increase the service life of the spark plug 100.

In some embodiments of the present invention, as shown in fig. 1 and 3, the second ignition electrode 203 is configured as at least a part of the housing 20. Preferably, the second ignition electrode 203 may be completely configured as the housing 20, an electric spark may be generated at a minimum distance of the gap between the first ignition electrode 101 and the housing 20, and by configuring the second ignition electrode 203 as the housing 20, the second ignition electrode 203 and the spark plug body 10 may be easily electrically connected, so that the second ignition electrode 203 may be grounded, and an electric spark may be generated between the first ignition electrode 101 and the second ignition electrode 203, and thus the failure of the spark plug 100 may be prevented. Moreover, the second ignition electrode 203 is integrated with the housing 20, so that the second ignition electrode 203 can be located at a designated position of the housing 20, and when the housing 20 is assembled on the cylinder head 30 of the engine at a preset assembly angle, the second ignition electrode 203 and the first ignition electrode 101 can be matched at a preset angle, so that the direction of electric sparks generated between the second ignition electrode 203 and the first ignition electrode 101 can be more appropriate, the energy consumption of the engine can be further optimized, and the fuel economy of the vehicle can be improved.

In some embodiments of the present invention, as shown in fig. 1, 3, and 4, the flame ports 204 may be multiple, and the multiple flame ports 204 are spaced apart along the circumference of the housing 20. Preferably, a plurality of flame outlet ports 204 are evenly spaced in sequence along the circumferential direction of the housing 20, each flame outlet port 204 is communicated with the precombustion chamber 201, and by providing a plurality of flame outlet ports 204, the intake efficiency of the precombustion chamber 201 can be improved, so that the flame spraying amount of the spark plug 100 can be increased, more mixture gas in the combustion chamber can be ignited, and the ignition effect of the mixture gas in the combustion chamber can be improved. Moreover, the flame jet ports 204 are arranged in a plurality of ways, so that the flame jet direction of the spark plug 100 can be increased, the propagation direction of flame in the combustion chamber can be more adaptive, the combustion effect of the mixed gas in the combustion chamber can be further improved, and the fuel economy of the engine can be further improved.

According to the embodiment of the present invention, the engine including the spark plug 100 of the above embodiment, the spark plug 100 is installed in the engine, the first positioning structure 202 is provided on the housing 20 of the spark plug 100 to position the assembling angle of the spark plug 100, and the second ignition electrode 203 is provided on the housing 20 to limit the direction of the electric spark generated in the prechamber 201.

According to the embodiment of the present invention, the vehicle includes the engine of the above-mentioned embodiment, the engine is installed in the vehicle, the spark plug 100 of the above-mentioned embodiment is installed to the engine, through set up the assembly angle of first location structure 202 in order to fix a position spark plug 100 on the casing 20 of spark plug 100, and set up the second ignition electrode 203 in casing 20 in order to restrict the direction of production of electric spark in the precombustion chamber 201, compare with the prior art, under the condition that the engine outputs the power of the same size, can reduce the fuel consumption of engine, thereby can improve the fuel economy of vehicle.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A spark plug for an engine, comprising:

a spark plug main body (10), wherein a first ignition electrode (101) is mounted at one end of the spark plug main body (10);

the spark plug comprises a shell (20), the shell (20) covers the outer side of the spark plug main body (10) and is formed with a pre-combustion chamber (201), the first ignition electrode (101) extends into the pre-combustion chamber (201), the shell (20) is provided with a first positioning structure (202), a second ignition electrode (203) matched with the first ignition electrode (101) and a flame nozzle (204), the first positioning structure (202) is suitable for being matched with a cylinder cover (30) of the engine in a positioning mode to limit the assembly angle of the shell (20), an electric spark is suitable for being generated between the first ignition electrode (101) and the second ignition electrode (203), and the flame nozzle (204) is communicated with the pre-combustion chamber (201).

2. The spark plug of engine of claim 1, wherein said first locating feature (202) is provided at an end of said housing (20) distal from said flame ports (204).

3. The spark plug of an engine according to claim 2, characterized in that said first positioning structure (202) is configured as a first positioning groove adapted to correspond to a second positioning groove (301) of said cylinder head (30).

4. The spark plug of an engine of any of claims 1-3, wherein there is at least one of the first locating structures (202).

5. The spark plug of an engine according to claim 1, wherein the spark plug body (10) defines a mounting space (102), a portion of the first ignition electrode (101) protrudes into the mounting space (102), an insulator is provided between the first ignition electrode (101) and the spark plug body (10), and the spark plug body (10) is electrically connected to the housing (20).

6. The spark plug of an engine according to claim 5, characterized in that the housing (20) is configured as a metal piece.

7. The spark plug of an engine according to claim 6, characterized in that the second ignition electrode (203) is configured as at least a partial structure of the housing (20).

8. The spark plug of engine of claim 1, characterized in that said flame ports (204) are plural, said flame ports (204) being spaced apart along the circumference of said shell (20).

9. An engine characterized by comprising the spark plug of the engine according to any one of claims 1 to 8.

10. A vehicle characterized by comprising the engine according to claim 9.