CN216278145U - Improved structure of motorcycle engine - Google Patents
Improved structure of motorcycle engine Download PDFInfo
- Publication number
- CN216278145U CN216278145U CN202122603812.3U CN202122603812U CN216278145U CN 216278145 U CN216278145 U CN 216278145U CN 202122603812 U CN202122603812 U CN 202122603812U CN 216278145 U CN216278145 U CN 216278145U
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- spark plug
- engine
- cylinder head
- sleeve
- motorcycle
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Abstract
The utility model relates to an improved structure of a motorcycle engine, which is arranged on a motorcycle and comprises a frame and an engine. The engine is arranged on the frame and comprises a cylinder head and a cylinder connected with the cylinder head, the cylinder head is provided with a first spark plug, a second spark plug and a chain chamber for accommodating a timing chain, the second spark plug is connected with a spark plug cover, and the spark plug cover comprises a connecting part, a head part and a flange part. The outer sleeve of the second spark plug positioned on the side of the chain chamber is provided with a spark plug sleeve, the spark plug cover is connected with the spark plug sleeve, and a water drainage hole is arranged on the region of the spark plug sleeve between the outer wall of the cylinder head and the flange part. Therefore, the engine oil in the chain chamber can be isolated by the spark plug sleeve to enter the spark plug, and the condensed water generated by cold and hot changes is discharged through the drain hole, so that the abnormal actuation of the spark plug caused indirectly is avoided.
Description
Technical Field
The utility model relates to an improved structure of a motorcycle engine, in particular to an improved structure of a motorcycle engine suitable for a scooter motorcycle.
Background
Under the recent trend of strict regulations and environmental protection awareness, how to reduce exhaust pollution and save oil consumption is the goal of efforts of various large factories.
Taking a scooter motorcycle as an example, in order to further reduce oil consumption and pollution of the scooter motorcycle, in addition to means such as optimizing a combustion chamber, a second spark plug can be arranged on the engine, so that the combustion efficiency of the engine is improved under the combustion actuation stroke. Therefore, the configuration of the double spark plugs is especially to solve the problems that when a motorcycle is started and accelerated, 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 noble metal of a catalytic converter for exhaust aftertreatment is reduced, and therefore oil consumption and pollution of the engine can be reduced. However, there are existing vehicles with gears or automobiles equipped with a second spark plug, and scooter motorcycles are still not popular.
The second spark plug is arranged, so the chain chamber which is provided with the timing chain is required to be penetrated through for installation, and the spark plug sleeve is used for isolating the engine oil in the chain chamber to be connected with the spark plug cover. However, the inside of the plug sleeve is a closed space, and condensed water is easily generated in the closed space due to changes in temperature, which often causes abnormal operation of the plug. The present inventors have therefore found that in view of the above-mentioned circumstances, there is a need for an improved motorcycle engine structure that can solve the above-mentioned problems, and the present invention has been completed through a few studies and experiments.
SUMMERY OF THE UTILITY MODEL
The main objective of the present invention is to provide an improved structure of motorcycle engine, which is to add a spark plug sleeve to isolate the engine oil in the chain chamber from entering the spark plug, and to form a drain hole on the spark plug sleeve, so as to facilitate the drainage of the condensed water generated by the cold and hot changes, and avoid the indirect abnormal actuation of the spark plug.
In order to achieve the above object, the present invention provides an improved structure of a motorcycle engine, which is arranged on a motorcycle, and comprises a frame and an engine, wherein the engine is arranged on the frame and comprises a cylinder head and a cylinder connected with the cylinder head, the cylinder head is provided with a first spark plug, a second spark plug and a chain chamber accommodating a timing chain, the second spark plug is connected with a spark plug cover, and the spark plug cover comprises a connecting part, a head part and a flange part.
The outer sleeve of the second spark plug positioned on the side of the chain chamber is provided with a spark plug sleeve, the spark plug cover is connected with the spark plug sleeve, and a water drainage hole is arranged on the region of the spark plug sleeve between the outer wall of the cylinder head and the flange part.
A cylinder axis of the cylinder and a normal line of the ground plane can form a first plane, the first spark plug is positioned on one side of the first plane, and the second spark plug is positioned on the other side of the first plane. Therefore, the first spark plug and the second spark plug are arranged in a symmetrical design, so that the convenience of assembly and maintenance can be improved, and the space arrangement is properly utilized to miniaturize the volume.
The water drain hole can be opened in a projection area of the ground plane projected to the spark plug sleeve along the normal direction. Therefore, the design is beneficial to draining the condensed water out of the cylinder head under the action of gravity.
Both the foregoing general description and the following detailed description are exemplary and explanatory in nature to further illustrate the claimed invention. Other objects and advantages of the present invention will become apparent from the following description and drawings.
Drawings
Fig. 1 is a side view of a motorcycle according to a preferred embodiment of the present invention.
FIG. 2 is a top view of an improved motorcycle engine according to a preferred embodiment of the present invention.
Fig. 3 is a sectional view showing an improved structure of an engine for a motorcycle according to a preferred embodiment of the present invention.
Description of the main element symbols:
1 motorcycle
2 vehicle frame
3 Engine
31 cylinder head
311 outer wall
32 cylinders
321 first spark plug
322 second spark plug
323 chain chamber
4 spark plug cover
41 connection part
42 head
43 Flange part
431 weep hole
5 spark plug sleeve
A1 first plane
A2 second plane
Ag ground plane
L1 Cylinder axis
Normal to L2
Angle theta
Detailed Description
Fig. 1 to 3 are a side view, a top view and a sectional view of a motorcycle engine according to a preferred embodiment of the present invention. The improved structure of motorcycle engine is shown in the figure, which is arranged on a motorcycle 1, mainly comprising a frame 2 and an engine 3 arranged on the frame 2, wherein the engine 3 comprises a cylinder head 31 and a cylinder 32 connected with the cylinder head 31, and the included angle theta between the cylinder axis L1 of the cylinder 32 and the ground plane Ag is 0-30 degrees, so that the cylinder 32 and the ground plane are close to the horizontal state.
As shown in fig. 1 and 2, a cylinder axis L1 of the cylinder 32 and a normal L2 of the ground plane Ag may form a first plane a 1; in addition, a second plane a2 is drawn on the joint surface of the cylinder head 31 and the cylinder 32. In the embodiment, the cylinder head 31 has two spark plugs, that is, the cylinder head 31 has a first spark plug 321 and a second spark plug 322, the first spark plug 321 is located on one side of the first plane a1, the second spark plug 322 is located on the other side of the first plane a1, the first spark plug 321 and the second spark plug 322 are configured in a symmetrical design, so that the convenience of assembly and maintenance can be improved, and the space configuration can be properly used to miniaturize the volume.
Fig. 3 is a sectional view showing an improved structure of an engine for a motorcycle according to a preferred embodiment of the present invention. Fig. 3 is a view from the second plane a2 to the cylinder head, as shown in the figure, the cylinder head 31 of the present embodiment is provided with a first spark plug 321, a second spark plug 322, and a chain chamber 323 accommodating a timing chain, the second spark plug 322 is connected to a spark plug cover 4, and the spark plug cover 4 includes a connecting portion 41, a head portion 42, and a flange portion 43.
The spark plug sleeve 5 is sleeved outside the second spark plug 322 located on the side of the chain chamber, the spark plug cover 4 is connected with the spark plug sleeve 5, a water drain hole 431 is formed in the region of the spark plug sleeve 5 between the outer wall 311 of the cylinder head 31 and the flange portion 43, and the water drain hole 431 is formed in the projection region of the ground plane Ag projected to the spark plug sleeve 5 along the direction of the normal L2. Therefore, the gravity drainage device is beneficial to draining the condensed water generated by cold and hot changes, and avoids the indirect abnormal actuation of the spark plug.
The above-mentioned embodiments are merely exemplary for convenience of description, and the scope of the claims of the present invention should be determined by the scope of the claims and not limited to the above-mentioned embodiments.
Claims (3)
1. An improved structure of motorcycle engine is arranged on a motorcycle, comprising:
a frame; and
the engine is arranged on the frame and comprises a cylinder head and a cylinder connected with the cylinder head, the cylinder head is provided with a first spark plug, a second spark plug and a chain chamber accommodating a timing chain, the second spark plug is connected with a spark plug cover, and the spark plug cover comprises a connecting part, a head part and a flange part;
the method is characterized in that: the outer part of the second spark plug on the side of the chain chamber is sleeved with a spark plug sleeve, the spark plug cover is connected with the spark plug sleeve, and a water drainage hole is arranged on the region of the spark plug sleeve between the outer wall of the cylinder head and the flange part.
2. An improved structure as claimed in claim 1, wherein a cylinder axis of the cylinder and a normal of the ground plane form a first plane, the first spark plug is located at one side of the first plane, and the second spark plug is located at the other side of the first plane.
3. An improved structure of motorcycle engine as claimed in claim 1, wherein the water drainage hole is opened in a projection area of the ground plane projected to the plug tube along the normal direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122603812.3U CN216278145U (en) | 2021-10-28 | 2021-10-28 | Improved structure of motorcycle engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122603812.3U CN216278145U (en) | 2021-10-28 | 2021-10-28 | Improved structure of motorcycle engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216278145U true CN216278145U (en) | 2022-04-12 |
Family
ID=81072003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122603812.3U Active CN216278145U (en) | 2021-10-28 | 2021-10-28 | Improved structure of motorcycle engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216278145U (en) |
-
2021
- 2021-10-28 CN CN202122603812.3U patent/CN216278145U/en active Active
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