CN2782963Y - Single cylinder overhead split double exhaust channel engine junk head for motorcycle - Google Patents
Single cylinder overhead split double exhaust channel engine junk head for motorcycle Download PDFInfo
- Publication number
- CN2782963Y CN2782963Y CN 200520033631 CN200520033631U CN2782963Y CN 2782963 Y CN2782963 Y CN 2782963Y CN 200520033631 CN200520033631 CN 200520033631 CN 200520033631 U CN200520033631 U CN 200520033631U CN 2782963 Y CN2782963 Y CN 2782963Y
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- CN
- China
- Prior art keywords
- secondary air
- cylinder head
- channel
- double
- air
- 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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- 239000000498 cooling water Substances 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims description 11
- 238000009434 installation Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 239000002912 waste gas Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000030279 gene silencing Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
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- Exhaust Gas After Treatment (AREA)
Abstract
The utility model relates to a single cylinder overhead split type double exhaust channel engine cylinder head for motorcycles, which is provided with a secondary air supply channel. A split type cam shaft mounting hole, a cooling water channel, a spark plug mounting hole and double air exhaust channels are arranged on the utility model. A lug boss is arranged on one side of the double air exhaust channels between the double air exhaust channels and the spark plug mounting hole. The secondary air supply channel is arranged on the lug boss and communicated with the double air exhaust channels. The problems of the complicated arrangement of the secondary air supply channels, and difficult processing on a cylinder head in the prior art are solved. Therefore, the arrangement of the secondary air supply channels on the cylinder head is simple, and the original water channel of a cylinder head is not changed; the length of the secondary air supply channel is shorter, the manufacture is easy, the reliability of the installation of the secondary air supply channels is added and the installation of the secondary air supply channel is convenient.
Description
Technical field
The utility model relates to the motorcycle engine cylinder head, particularly offers the split type double air flue motorcycle engine cylinder head of single-cylinder water-cooling overhead 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 air duct 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 air duct 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 cylinder header structure, on cylinder head, offer the secondary air compensating air channel that is used for the secondary air compensating air duct 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 the split type double air flue motorcycle engine cylinder head of a kind of single-cylinder water-cooling overhead, offers complexity, the problem of processing difficulties with secondary air compensating air channel on the cylinder head in the solution prior art.
The split type double air flue motorcycle engine cylinder head of single-cylinder water-cooling overhead described in the utility model, which is provided with split type camshaft mounting hole, cooling water channel, spark plug mounting hole and double air flue, in a side of described double air flue, offer the secondary air compensating air channel between this double air flue and the spark plug mounting hole and communicate with described double air flue.
Described secondary air compensating air channel and double the air flue place of passing through mutually are positioned at the intersecting area of double air flue.
Cylinder head is provided with boss, and described secondary air compensating air channel is opened on this boss.
Described secondary air compensating air channel is a tapped hole at an end of boss, and the 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 split type double air flue motorcycle engine cylinder head of single-cylinder water-cooling overhead is simple, do not change the original water channel of cylinder head yet, 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 the split type double air flue motorcycle engine cylinder head of single-cylinder water-cooling overhead described in the utility model;
Fig. 2 is that the A of Fig. 1 is to view.
Embodiment
Referring to accompanying drawing 1, Fig. 2, the split type double air flue motorcycle engine cylinder head of single-cylinder water-cooling overhead of the present utility model, which is provided with split type camshaft mounting hole, cooling water channel, spark plug mounting hole 3 and double air flue 1, inner cooling water channel is communicated with by cooling water road junction 5, and in a side of described double air flue 1, be provided with boss 4 between this double air flue 1 and the spark plug mounting hole 3, offer secondary air compensating air channel 2 on the boss 4 and communicate with described double air flue 1, secondary air compensating air channel 2 and double air flue 1 place of passing through mutually are positioned at the intersecting area of double air flue.Secondary air compensating air channel 2 is processed into tapped hole on boss 4 end faces, the secondary air compensating air duct can be realized and being connected of cylinder head by this tapped hole.
Claims (4)
1, the split type double air flue motorcycle engine cylinder head of a kind of single-cylinder water-cooling overhead, which is provided with split type camshaft mounting hole, cooling water channel, spark plug mounting hole (3) and double air flue (1), it is characterized in that:, offer secondary air compensating air channel (2) between this double air flue (1) and the spark plug mounting hole (3) and communicate with described double air flue (1) in a side of described double air flue (1).
2, the split type double air flue motorcycle engine cylinder head of single-cylinder water-cooling overhead according to claim 1 is characterized in that: secondary air compensating air channel (2) and double air flue (1) place of passing through mutually are positioned at the intersecting area of double air flue (1).
3, the split type double air flue motorcycle engine cylinder head of single-cylinder water-cooling overhead according to claim 1 and 2, it is characterized in that: cylinder head is provided with boss (4), and described secondary air compensating air channel (2) is opened on this boss (4).
4, the split type double air flue motorcycle engine cylinder head of single-cylinder water-cooling overhead according to claim 3, it is characterized in that: described secondary air compensating air channel (2) is a tapped hole at an end of boss (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520033631 CN2782963Y (en) | 2005-03-22 | 2005-03-22 | Single cylinder overhead split double exhaust channel engine junk head for motorcycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520033631 CN2782963Y (en) | 2005-03-22 | 2005-03-22 | Single cylinder overhead split double exhaust channel engine junk head for motorcycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2782963Y true CN2782963Y (en) | 2006-05-24 |
Family
ID=36767949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520033631 Expired - Fee Related CN2782963Y (en) | 2005-03-22 | 2005-03-22 | Single cylinder overhead split double exhaust channel engine junk head for motorcycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2782963Y (en) |
-
2005
- 2005-03-22 CN CN 200520033631 patent/CN2782963Y/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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060524 |