CN2787852Y - Split type water-cooled cylinder head for single-cylinder overhead engine - Google Patents
Split type water-cooled cylinder head for single-cylinder overhead engine Download PDFInfo
- Publication number
- CN2787852Y CN2787852Y CN 200520033626 CN200520033626U CN2787852Y CN 2787852 Y CN2787852 Y CN 2787852Y CN 200520033626 CN200520033626 CN 200520033626 CN 200520033626 U CN200520033626 U CN 200520033626U CN 2787852 Y CN2787852 Y CN 2787852Y
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- CN
- China
- Prior art keywords
- cylinder head
- channel
- secondary air
- cylinder
- air supply
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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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- Exhaust Gas After Treatment (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The utility model relates to a single-cylinder water-cooled overhead split type engine cylinder head, which is provided with a secondary air supply channel. A split type came shaft mounting hole, an air exhaust channel and a cooling water channel are arranged on the single-cylinder water-cooled overhead split type engine cylinder head, wherein an opening is arranged on the cylinder body combined surface of the cooling water channel, the secondary air supply channel is arranged outside the cylinder body combined surface under the air exhaust channel and communicated with the air exhaust channel. The problems of the complicated arrangement of the secondary air supply channel, and difficult processing on a cylinder head in the prior art are solved, so that the arrangement of the secondary air supply channel on the cylinder head is simple. The original water channel of the cylinder head is not changed, and the length of the secondary air supply channel is short. Therefore, the processing is easy, the reliability of the installation of the secondary air supply channel is increased 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 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 a kind of single-cylinder water-cooling overhead splitting cnginc cylinder head, offers complexity, the problem of processing difficulties with secondary air compensating air channel on the cylinder head in the solution prior art.
Single-cylinder water-cooling overhead splitting cnginc cylinder head described in the utility model, which is provided with split type camshaft mounting hole, air outlet flue, cooling water channel, wherein, cooling water channel has opening on the cylinder block junction plane, below described air outlet flue, outside the cylinder block junction plane, be provided with the secondary air compensating air channel and communicate with described air outlet flue.
The utility model has the advantages that: offering of the secondary air compensating air channel on the single-cylinder water-cooling overhead splitting cnginc cylinder head 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 representation of single-cylinder water-cooling overhead splitting cnginc cylinder head described in the utility model;
Fig. 2 is the worm's eye view of Fig. 1;
Fig. 3 is to use the schematic representation of state.
Embodiment
Referring to accompanying drawing 1, Fig. 2, Fig. 3, single-cylinder water-cooling overhead splitting cnginc cylinder head of the present utility model, which is provided with split type camshaft mounting hole, air outlet flue 1, cooling water channel 5, wherein, cooling water channel 5 has opening on cylinder block junction plane 3, below described air outlet flue 1, outside the cylinder block junction plane 3, be provided with secondary air compensating air channel 2 and communicate with described air outlet flue 1.
Claims (1)
1, a kind of single-cylinder water-cooling overhead splitting cnginc cylinder head, which is provided with split type camshaft mounting hole, air outlet flue (1), cooling water channel (5), wherein, cooling water channel (5) has opening on cylinder block junction plane (3), it is characterized in that: below in described air outlet flue (1), outside the cylinder block junction plane (3), be provided with secondary air compensating air channel (2) and communicate with described air outlet flue (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520033626 CN2787852Y (en) | 2005-03-22 | 2005-03-22 | Split type water-cooled cylinder head for single-cylinder overhead engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520033626 CN2787852Y (en) | 2005-03-22 | 2005-03-22 | Split type water-cooled cylinder head for single-cylinder overhead engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2787852Y true CN2787852Y (en) | 2006-06-14 |
Family
ID=36786147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520033626 Expired - Fee Related CN2787852Y (en) | 2005-03-22 | 2005-03-22 | Split type water-cooled cylinder head for single-cylinder overhead engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2787852Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103993973A (en) * | 2014-04-18 | 2014-08-20 | 中国北方发动机研究所(天津) | Air cylinder cover water cavity structure with exhaust valve seat ring cooling water channel |
-
2005
- 2005-03-22 CN CN 200520033626 patent/CN2787852Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103993973A (en) * | 2014-04-18 | 2014-08-20 | 中国北方发动机研究所(天津) | Air cylinder cover water cavity structure with exhaust valve seat ring cooling water channel |
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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: 20060614 |