CN212898722U

CN212898722U - Ignition device for internal combustion engine

Info

Publication number: CN212898722U
Application number: CN202021775005.9U
Authority: CN
Inventors: 吴俊贤; 曹文晋; 张书晢
Original assignee: Sanyang Industry Co Ltd
Current assignee: Sanyang Industry Co Ltd
Priority date: 2020-08-24
Filing date: 2020-08-24
Publication date: 2021-04-06
Anticipated expiration: 2030-08-24

Abstract

The utility model discloses an internal-combustion engine ignition is on one has the cylinder head of a spark plug side, a chain room and a chain room side, and this spark plug side has a first mounting hole that runs through the combustion chamber of this cylinder head, and this first mounting hole has set firmly a spark plug. The ignition device comprises a sleeve, a fixing plate, a locking piece and a second spark plug, wherein the sleeve is fixedly arranged in the second mounting hole, a flange plate is arranged on the outer shell of the sleeve, the fixing plate and the flange plate are arranged in a front-back adjacent mode correspondingly, the fixing plate is provided with a through hole, the locking piece penetrates through the through hole to press the fixing plate and the flange plate so as to press the sleeve to be fixedly arranged in the second mounting hole, and the second spark plug is fixedly arranged in the sleeve. Thus, the sleeve can be easily mounted or dismounted only by a simple tool.

Description

Ignition device for internal combustion engine

Technical Field

The present invention relates to an ignition device for an internal combustion engine, and more particularly to an ignition device for an internal combustion engine of a motorcycle.

Background

The motorcycle is a two-wheel or three-wheel vehicle driven by an engine and using a handle to operate the direction, and is a convenient vehicle at present due to the characteristics of simple operation and convenient movement.

In recent years, because of the strict requirements of environmental regulations and energy crisis in various countries of the world, various motorcycle manufacturers have actively developed engines with low pollution, low fuel consumption and high performance. In the past, a cylinder head of an internal combustion engine was ignited by using a spark plug, but the cylinder head cannot cope with increasingly strict regulations in the future under various operations and loads, so that the oil consumption and pollution cannot be considered at the same time. Therefore, the configuration of the double spark plugs is especially to solve the problems that when a motorcycle starts and accelerates, the mixed gas of an engine is relatively dense, combustion is required to be relatively efficient, serious exhaust pollution is avoided, the use amount of catalyst noble metal for exhaust aftertreatment is reduced, and therefore the oil consumption and pollution of the engine can be reduced.

A conventional double spark plug arrangement is that a first spark plug is arranged at the opposite side of the chain chamber side (a position where one spark plug is used in the past), that is, arranged at the spark plug side, and a second spark plug is arranged to pass through the chain chamber and to be inserted into a sleeve inner hole of a cylinder head, and then to be locked to a combustion chamber wall surface of the cylinder head (refer to JP 1984060056); the sleeve is usually fixed by bolting the outer casing of the sleeve, the sleeve outlet end face support or the cylinder head side cover support (refer to JP 2012215171 patent). However, in maintenance, such as disassembling the sleeve, it is difficult to move, and special tools are required, which is not ideal. In addition, when the annular sealing element is externally installed, external force is needed to press the end face of the outlet side of the sleeve, the sleeve is easy to deform, the annular sealing element cannot be effectively sealed, and air leakage is caused.

The inventor has thought that in the spirit of the invention, we need to find an ignition device of an internal combustion engine that can solve the above problems, and the present invention is completed after several research experiments.

SUMMERY OF THE UTILITY MODEL

The second spark plug of the utility model is inserted into a sleeve of the cylinder head and then locked on the wall of the combustion chamber. Wherein, the outer casing of the sleeve is sleeved with a flange plate, and a fixing plate is arranged adjacent to the flange plate in front and back. When the sleeve is to be installed, the flange plate on the sleeve can be pressed only by pressing the fixing plate by external force, so that the sleeve and the second spark plug are fixedly arranged in the second installation hole, and the problem of deformation of the end face of the outlet side of the sleeve is avoided. When the sleeve needs to be repaired and disassembled, the sleeve can be disassembled only by easily moving the groove part at the lower edge of the flange plate by using a simple tool (such as a straight screwdriver).

In order to achieve the above object, the utility model discloses an internal-combustion engine ignition is on a cylinder head that has a spark plug side, a chain chamber and a chain chamber side is located to the group, the cylinder head is connected with a cylinder and is formed a combustion chamber, this spark plug side has a first mounting hole that runs through the combustion chamber of this cylinder head, this first mounting hole has set firmly a first spark plug, this combustion chamber is stretched into to the electrode of this first spark plug, wherein, this chain chamber side has a second mounting hole that runs through the combustion chamber of this cylinder head and the wall of this chain chamber, this ignition is including a sleeve, a fixed plate, a locking piece and a second spark plug.

The sleeve is fixedly arranged in the second mounting hole, and the outer shell of the sleeve is provided with a flange plate which can be used for conveniently pressing the sleeve to be fixedly arranged in the second mounting hole. The fixing plate is adjacent to the flange plate in front and back, the fixing plate can be used for pressing the flange plate and is provided with a through hole; the locking piece penetrates through the through hole and is locked on the locking seat of the cylinder head, and the locking piece can be used for pressing the fixing plate and the flange plate so as to press the sleeve to be fixedly arranged in the second mounting hole; the second spark plug is fixedly arranged in the sleeve, and an electrode of the second spark plug extends into the combustion chamber.

The utility model discloses when installing the second spark plug, with locking part oppression fixed plate, and then oppress the flange board on this sleeve, recompress this sleeve and set firmly in this second mounting hole, can not cause the problem of this telescopic outlet side terminal surface deformation, also can not have the unable sealed situation of annular seal spare.

The sleeve may be sleeved with a first annular sealing member located at the locking end of the second spark plug.

The sleeve may be fitted with a second annular seal located below the flange plate of the sleeve.

The lower edge of the flange plate can be provided with a groove, and when the second spark plug is disassembled, the sleeve can be easily disassembled only by easily moving the groove on the lower edge of the flange plate by a simple tool.

The locking piece can be a bolt, and an inner thread hole corresponding to the bolt is formed in an attachment seat of the cylinder head.

The fixing plate may be a washer or other equivalent structure plate.

The sleeve and the flange plate can be integrally formed, or the flange plate can be sleeved on the sleeve to form a two-piece structure.

The foregoing summary, as well as the following detailed description, is exemplary in nature and is intended to further illustrate the scope of the present invention. Other objects and advantages of the present invention will become apparent from the following description and drawings.

Drawings

Fig. 1 is a top view of an ignition device for an internal combustion engine according to a preferred embodiment of the present invention.

Fig. 2 is an exploded view of an ignition device for an internal combustion engine according to a preferred embodiment of the present invention.

Fig. 3 is a partially enlarged front view of an ignition device for an internal combustion engine according to a preferred embodiment of the present invention.

Fig. 4 is a sectional view of an ignition device for an internal combustion engine according to a preferred embodiment of the present invention.

Description of the main element symbols:

2 cylinder head 20 wall

201 locking seat 202 inner thread hole

21 spark plug side 22 chain chamber

220 wall 23 chain chamber side

24 first mounting hole of combustion chamber 26

28 second mounting hole 31 first spark plug

33 sleeve 331 flange plate

332 groove 34 fixing plate

341 through hole 35 fastener

36 second spark plug 37 first annular seal

38 second annular seal 5 Cylinder head cover

51 oxygen sensor 52 temperature sensor

55 camshaft 56 sprocket

6 piston 7 cylinder

8 connecting rod

Detailed Description

Please refer to fig. 1, fig. 2 and fig. 3, which are a top view, an exploded view and a partially enlarged front view of an ignition device of an internal combustion engine according to a preferred embodiment of the present invention. The ignition device of the internal combustion engine of the present embodiment is assembled to a cylinder head 2 having a spark plug side 21, a chain chamber 22 and a chain chamber side 23, and the cylinder head 2 is connected to a cylinder 7 to form a combustion chamber 24. The spark plug side 21 has a first mounting hole 26 penetrating the combustion chamber 24 of the cylinder head 2, and the chain chamber side 23 has a second mounting hole 28 penetrating the combustion chamber 24 of the cylinder head 2 and the wall surface 220 of the chain chamber 22.

The ignition device of the internal combustion engine of the present embodiment includes: a first spark plug 31, a sleeve 33, a fixing plate 34, a locking member 35, a first annular sealing member 37, a second annular sealing member 38 and a second spark plug 36, wherein the first spark plug 31 is fixedly installed in the first installation hole 26 on the spark plug side 21, and the electrode of the first spark plug 31 extends into the combustion chamber 24. The sleeve 33 is fixed to the second mounting hole 28 of the chain chamber side 23, and the outer shell of the sleeve 33 has a flange plate 331, and the flange plate 331 can be used to press and fix the sleeve 33 to the second mounting hole 28.

In addition, the fixing plate 34 is disposed adjacent to the flange plate 331 of the sleeve 33 in the front-rear direction, the fixing plate 34 can be used to press the flange plate 331, and the fixing plate 34 has a through hole 341; the locking member 35 is disposed through the through hole 341 of the fixing plate 34, and the locking member 35 can be used to press the fixing plate 34 and the flange plate 331, so as to press the sleeve 33 to be fixed in the second mounting hole 28. A second spark plug 36 is fixedly arranged in the sleeve 33, and an electrode of the second spark plug 36 extends into the combustion chamber 24. Therefore, the internal combustion engine ignition device of the present embodiment has a dual spark plug feature.

Referring to fig. 4, which is a cross-sectional view of an ignition device of an internal combustion engine according to a preferred embodiment of the present invention, a cylinder head 2 and a cylinder 7 are connected to form a combustion chamber 24, and electrodes of a first spark plug 31 and a second spark plug 36 are extended into the combustion chamber 24. The cylinder 7 is provided with a piston 6 and a connecting rod 8, the cylinder head 2 is provided with a cam shaft 55 and a chain 56, and the cylinder head 2 is covered with a cylinder head cover 5. As shown in fig. 3, an oxygen sensor 51 is fixed on the cylinder head 2 to measure the oxygen content information in the exhaust gas, and a temperature sensor 52 is fixed on the cylinder head 2 to measure the temperature of the intake gas.

As shown in fig. 4, in the present embodiment, the sleeve 33 is sleeved with an annular sealing member, wherein the first annular sealing member 37 is located at the locking end of the second spark plug 36, and the second annular sealing member 38 is located below the flange plate 331 of the sleeve 33.

In addition, as shown in FIG. 3, in the present embodiment, the bottom edge of the flange plate 331 has a groove 332, and the groove 332 can be used to facilitate the detachment of the sleeve 33. The locking member 35 is a bolt, and the locking seat 201 of the cylinder head 2 has an internal threaded hole 202 corresponding to the bolt. The fixing plate 34 is a washer, and the sleeve 33 and the flange plate 331 are formed as a single body, or the flange plate 331 and the sleeve 33 can be formed as two pieces, and the flange plate 331 is sleeved on the sleeve 33 to form a single-piece structure.

Thus, the second spark plug 36 of the present embodiment is inserted into a sleeve 33 of the cylinder head 2 and then locked to the wall surface of the combustion chamber 24 of the cylinder head 2. The outer casing of the sleeve 33 has a flange plate 331, and a fixing plate 34 is disposed adjacent to the flange plate 331 in front and rear directions. When the sleeve 33 is to be installed, the flange plate 331 on the sleeve 33 can be pressed only by pressing the fixing plate 34 with the external force of the locking member 35, so that the sleeve 33 and the second spark plug 36 are fixedly disposed in the second installation hole 28, and the problem of deformation of the end face of the outlet side of the sleeve 33 is not caused. When the sleeve 33 is to be repaired or disassembled, the sleeve 33 can be disassembled by simply moving the sleeve with a simple tool (e.g., a linear screwdriver) at the recess 332 of the lower edge of the flange plate 331.

The above-described embodiments are merely exemplary for convenience of description, and the scope of the claims of the present invention should be determined by the claims rather than by the limitations of the above-described embodiments.

Claims

1. The utility model provides an internal-combustion engine ignition, the group is located one and has a spark plug side, a chain room and a chain room side on the cylinder head, this cylinder head and a cylinder connection form a combustion chamber, this spark plug side has a first mounting hole that runs through this combustion chamber, and this first mounting hole sets firmly a spark plug, its characterized in that:

the side of the chain chamber is provided with a second mounting hole penetrating through the combustion chamber and the wall surface of the chain chamber, the ignition device comprises a sleeve, a fixing plate, a locking piece and a second spark plug, wherein the sleeve is fixedly arranged in the second mounting hole, the outer shell of the sleeve is provided with a flange plate, the fixing plate and the flange plate are arranged in a front-back adjacent mode correspondingly, the fixing plate is provided with a through hole, the locking piece penetrates through the through hole to press the fixing plate and the flange plate so as to press the sleeve to be fixedly arranged in the second mounting hole, and the second spark plug is fixedly arranged in the sleeve.

2. The internal combustion engine ignition device of claim 1 wherein the sleeve housing is provided with a first annular seal at the locking end of the second spark plug.

3. The internal combustion engine ignition device of claim 1 wherein said sleeve housing is provided with a second annular seal positioned below said flange plate.

4. The engine ignition system of claim 1, wherein the bottom edge of said flange plate has a recess to facilitate removal of said sleeve.

5. The ignition device of an internal combustion engine as claimed in claim 1, wherein said locking member is a bolt, and a locking seat of said cylinder head has an internal threaded hole corresponding to said bolt.

6. The internal combustion engine ignition device of claim 1, wherein the retaining plate is a washer.

7. The internal combustion engine ignition device of claim 1, wherein said sleeve and said flange plate are of a unitary construction.

8. The engine ignition system of claim 1, wherein said flange plate is mounted on said sleeve.