CN2782961Y - Single cylinder lower set junk head for engine of motorcycle - Google Patents
Single cylinder lower set junk head for engine of motorcycle Download PDFInfo
- Publication number
- CN2782961Y CN2782961Y CN 200520010816 CN200520010816U CN2782961Y CN 2782961 Y CN2782961 Y CN 2782961Y CN 200520010816 CN200520010816 CN 200520010816 CN 200520010816 U CN200520010816 U CN 200520010816U CN 2782961 Y CN2782961 Y CN 2782961Y
- Authority
- CN
- China
- Prior art keywords
- secondary air
- cylinder head
- air supply
- air
- supply passage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a single cylinder underneath type cylinder head of a motorcycle engine, which is provided with a secondary air supply passage. An air exhaust passage is arranged on an air exhaust passage surface of the cylinder head. The surface of a spark plug, which is provided with a spark plug hole, is arranged on the side surface of the air exhaust passage surface. A lug boss is arranged between the spark plug hole and the air exhaust passage on the surface of the spark plug. The secondary air supply passage is arranged on the lug boss. The secondary air supply passage is communicated with the air exhaust passage. The problems of the complicated arrangement of the secondary air supply passage and difficult processing on a cylinder head in the prior art are solved, so that the arrangement of the secondary air supply passage on the cylinder head is simple. The length of the secondary air supply passage is short, the processing is easy, the reliability of the installation of the secondary air supply passage is increased and the installation of the secondary air supply passage is convenient.
Description
Technical field
The utility model relates to the motorcycle engine cylinder head, particularly offers single cylinder underneath type (no camshaft mounting hole on the cylinder head) the motorcycle engine cylinder head of secondary air compensating air channel.
Background technique
CO, HC and NOx that motorcycle engine mixed gas burning back ejects from silencing apparatus are main pollutants, and be very effective with the method reduction CO and the HC of secondary air compensating, and both economical.The method of secondary air compensating is exactly to add fresh air in the air outlet flue of engine cylinder head, and high-temp waste gas burning once more in the cylinder head air outlet flue that the indoor mixed gas burning of engine combustion back is produced is with the O in the CO in the waste gas and HC and the fresh air
2Further oxidation reaction becomes harmless H in the air outlet flue of cylinder head
2O and CO
2Thereby, reach the purpose that reduces HC and CO content in the waste gas.Usual way is to connect a pipeline that leads to air-strainer and controlled folding by an one-way valve at the cylinder head air outlet flue, the openings of sizes of the vacuum degree control tonifying Qi pipeline that this one-way valve control produces when utilizing engine charge, reach the different purpose of air compensation when different operating mode, just disclose the multiple example that the method that adopts secondary air compensating on different motors reduces discharging respectively as Chinese patent 99118739,99124498,00106963,01123174,02240977,93105944,03119815,01143598 etc.But owing to be subjected to the restriction of engine cylinder header structure, make that offering this secondary air compensating air channel on cylinder head has certain degree of difficulty, thereby make the more complicated of offering of the secondary air compensating air channel that communicates with the cylinder head air outlet flue in the above-mentioned prior art, secondary air compensating air channel length is longer, causes the processing of secondary air compensating system, assembly cost higher.
The model utility content
The purpose of this utility model provides a kind of single cylinder underneath type motorcycle engine cylinder head, offers complexity, the problem of processing difficulties with secondary air compensating air channel on solution prior art ten cylinder heads.
Single cylinder underneath type motorcycle engine cylinder head described in the utility model, this cylinder head air outlet flue face is provided with air outlet flue, there is the spark plug face of spark-plug hole to be located at the side of air outlet flue face, on its spark plug face, be provided with a boss between spark-plug hole and the air outlet flue, offer the secondary air compensating air channel on the boss, this secondary air compensating air channel communicates with described air outlet flue.
Described secondary air compensating air channel can be tapped hole at an end of boss, and an end of secondary air compensating air conduit is realized and being connected of cylinder head by screw thread.
The utility model has the advantages that: offering of the secondary air compensating air channel on the single cylinder underneath type motorcycle engine cylinder head is simple, secondary air compensating air channel length is shorter, make its easy processing, and increased the reliability that the secondary air compensating air conduit is installed, made things convenient for the installation of secondary air compensating air conduit.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is a single cylinder underneath type motorcycle engine cylinder head plan view of the present utility model.
Fig. 2 is that the A of Fig. 1 is to revolved view.
Fig. 3 is that the B of Fig. 1 is to view.
Embodiment
Referring to accompanying drawing 1-Fig. 3, single cylinder underneath type motorcycle engine cylinder head of the present utility model, this cylinder head air outlet flue face 11 is provided with air outlet flue 1, there is the spark plug face 12 of spark-plug hole 2 to be located at the side of air outlet flue face 11, on spark plug face 12, be provided with a boss 3 between spark-plug hole 2 and the air outlet flue 1, offer secondary air compensating air channel 4 on the boss 3, this secondary air compensating air channel 4 communicates with described air outlet flue 1, secondary air compensating air channel 4 is a tapped hole at an end of boss 3, and an end of secondary air compensating air conduit is realized and being connected of cylinder head by screw thread.
Claims (2)
1, a kind of single cylinder underneath type motorcycle engine cylinder head, this cylinder head air outlet flue face (11) is provided with air outlet flue (1), there is the spark plug face (12) of spark-plug hole (2) to be located at the side of air outlet flue face (11), it is characterized in that: on spark plug face (12), be provided with a boss (3) between spark-plug hole (2) and the air outlet flue (1), offer secondary air compensating air channel (4) on the boss (3), this secondary air compensating air channel (4) communicates with described air outlet flue (1).
2, single cylinder underneath type motorcycle engine cylinder head according to claim 1, it is characterized in that: described secondary air compensating air channel (4) is a tapped hole at an end of boss (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520010816 CN2782961Y (en) | 2005-03-17 | 2005-03-17 | Single cylinder lower set junk head for engine of motorcycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520010816 CN2782961Y (en) | 2005-03-17 | 2005-03-17 | Single cylinder lower set junk head for engine of motorcycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2782961Y true CN2782961Y (en) | 2006-05-24 |
Family
ID=36767947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520010816 Expired - Fee Related CN2782961Y (en) | 2005-03-17 | 2005-03-17 | Single cylinder lower set junk head for engine of motorcycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2782961Y (en) |
-
2005
- 2005-03-17 CN CN 200520010816 patent/CN2782961Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHONGQING ZONGSHEN ENGINE MANUFACTURING CO. Free format text: FORMER OWNER: CHONGQING ZONGSHEN TECHNOLOGY DEVELOPMENT + RESEARCH CO., LTD. Effective date: 20071221 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20071221 Address after: Shen Shen industrial park, Banan District, Chongqing, China: 400054 Patentee after: Chongqing Zongshen Engine Manufacturing Co., Ltd. Address before: No. 25 Erlang Road, Chongqing hi tech Development Zone, Shiqiaopu, 400039 Patentee before: Chongqing Zongshen Technology Development & Research Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060524 |