CN2777220Y - Double cylinder top-placed integral type engine cylinder head of motorcycle - Google Patents
Double cylinder top-placed integral type engine cylinder head of motorcycle Download PDFInfo
- Publication number
- CN2777220Y CN2777220Y CN 200520007740 CN200520007740U CN2777220Y CN 2777220 Y CN2777220 Y CN 2777220Y CN 200520007740 CN200520007740 CN 200520007740 CN 200520007740 U CN200520007740 U CN 200520007740U CN 2777220 Y CN2777220 Y CN 2777220Y
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- Prior art keywords
- cylinder head
- secondary air
- air supply
- air
- boss
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- 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 double-cylinder overhead integrated cylinder head of a motorcycle engine, which is provided with secondary air supply passages. An integrated cam shaft mounting hole and an air exhaust passage are respectively arranged on the parallel left and the right bodies. Two lug bosses are arranged between the two air exhaust passages on one side of each of the air exhaust passages, and the secondary air supply passages are arranged on the lug bosses and respectively communicated with the two air exhaust passages. 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 the twin-tub overhead integrated type 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 secondary air compensating pipe 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 secondary air compensating pipe that this one-way valve 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, on cylinder head, offer the secondary air compensating air channel that is used for the secondary air compensating pipe is communicated with the cylinder head air outlet flue and have 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 twin-tub overhead integrated type motorcycle engine cylinder head, offers complexity, the problem of processing difficulties with secondary air compensating air channel on the cylinder head in the solution prior art.
Twin-tub overhead integrated type motorcycle engine cylinder head described in the utility model, on its two left and right body arranged side by side, be respectively equipped with one-piece camshaft mounting hole and air outlet flue, this cylinder head is in a side of described air outlet flue, be provided with two boss between two air outlet flues, offer the secondary air compensating air channel on the boss, it communicates with two air outlet flues respectively.
Be processed with two tapped holes on the described raised head face, when being connected with the secondary air compensating air duct, one end of secondary air compensating air duct can be arranged to flange plate, by screw this flange plate is installed on the described boss, thereby realizes being connected of secondary air compensating air duct and cylinder head.
Described secondary air compensating air channel also can be processed into tapped hole at an end of boss, and an end of secondary air compensating air duct 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 twin-tub overhead integrated 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 duct is installed, made things convenient for the installation of secondary air compensating air duct.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is the schematic top plan view of twin-tub overhead integrated type motorcycle engine cylinder head described in the utility model;
Fig. 2 is that the A of Fig. 1 is to view;
Fig. 3 is that the B of Fig. 1 is to view.
Embodiment
Referring to accompanying drawing 1-Fig. 3, the whole rocking arm type motorcycle engine of overhead type twin-tub of the present utility model cylinder head, two left and right sides bodies 1 arranged side by side on the cylinder head, be respectively equipped with one-piece camshaft mounting hole and air outlet flue 3 on 2,4, described air outlet flue 3 is being set, that side of 4 15, between two air outlet flues 3 and 4 two boss 9 are set, be processed with 2 screws 10 on each boss face, process the hole of secondary air compensating air channel 5 or 6 in the middle of the boss 9, secondary air compensating air channel 5,6 respectively with two air outlet flues 3,4 communicate, external tracheae can be by installing the blue mode of sending out, be screwed in the screw 10 of the boss 9 of cylinder head, to make things convenient for the installation of secondary air compensating air conduit.
Above-mentioned boss 9 send out Placement blue, also can be used in the aperture thread mill drilling of boss 9, an end of secondary air compensating air conduit is realized and being connected of cylinder head by screw thread.
Claims (3)
1, a kind of twin-tub overhead integrated type motorcycle engine cylinder head, on its two left and right body (1,2) arranged side by side, be respectively equipped with one-piece camshaft mounting hole and air outlet flue (3,4), it is characterized in that: in a side (15) of described air outlet flue (3,4), two air outlet flues are provided with two boss (9) between (3,4), offer secondary air compensating air channel (5,6) on the boss (9), it communicates with two air outlet flues (3,4) respectively.
2, overhead twin-tub integrated type motorcycle engine cylinder head according to claim 1 is characterized in that: be processed with two tapped holes (10) on each boss (9) end face.
3, overhead twin-tub integrated type motorcycle engine cylinder head according to claim 1, it is characterized in that: described secondary air compensating air channel (5,6) is a tapped hole at an end of boss (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520007740 CN2777220Y (en) | 2005-03-18 | 2005-03-18 | Double cylinder top-placed integral type engine cylinder head of motorcycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520007740 CN2777220Y (en) | 2005-03-18 | 2005-03-18 | Double cylinder top-placed integral type engine cylinder head of motorcycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2777220Y true CN2777220Y (en) | 2006-05-03 |
Family
ID=36744605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520007740 Expired - Fee Related CN2777220Y (en) | 2005-03-18 | 2005-03-18 | Double cylinder top-placed integral type engine cylinder head of motorcycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2777220Y (en) |
-
2005
- 2005-03-18 CN CN 200520007740 patent/CN2777220Y/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: 20060503 |