CN2837534Y - Integrated cylinder head for single-cylinder overhead water-cooled engine - Google Patents
Integrated cylinder head for single-cylinder overhead water-cooled engine Download PDFInfo
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- CN2837534Y CN2837534Y CN 200520033613 CN200520033613U CN2837534Y CN 2837534 Y CN2837534 Y CN 2837534Y CN 200520033613 CN200520033613 CN 200520033613 CN 200520033613 U CN200520033613 U CN 200520033613U CN 2837534 Y CN2837534 Y CN 2837534Y
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- Prior art keywords
- cylinder head
- secondary air
- air
- air supply
- supply passage
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Abstract
The utility model relates to a single-cylinder overhead integrated type water-cooled engine cylinder head, which is provided with a secondary air supply passage. A cooling water passage, an integrated type cam shaft mounting hole, a spark plug mounting hole and an air exhaust passage are arranged on the utility model. The secondary air supply passage is arranged on the cylinder head body on the air exhaust passage side and 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 the single cylinder overhead integrated type water cooled 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 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 for the cooling engine for motor cycle water cylinder head, owing to be subjected to the restriction of its 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 overhead integrated type water cooled 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.
Single cylinder overhead integrated type water cooled engine cylinder head described in the utility model, which is provided with cooling water channel, one-piece camshaft mounting hole, spark plug mounting hole and air outlet flue, on the cylinder head body of described air outlet flue side, offer the secondary air compensating air channel and communicate with air outlet flue.
Described secondary air compensating air channel is between spark plug mounting hole and air outlet flue.
Described secondary air compensating air channel and secondary air compensating air duct connecting end are tapped hole, 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 single cylinder overhead integrated type water cooled engine cylinder head is simple, secondary air compensating air channel length is shorter, make its easy processing, do not destroy the cooling water channel in the cylinder head, 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 that the master of single cylinder overhead integrated type water cooled engine cylinder head described in the utility model looks schematic representation;
Fig. 2 is the plan view of Fig. 1.
Embodiment
Referring to accompanying drawing 1-Fig. 2, this single cylinder overhead integrated type water cooled engine cylinder head, which is provided with cooling water channel 1, one-piece camshaft mounting hole, spark plug mounting hole 2 and air outlet flue 4, in described air outlet flue 4 sides, offering secondary air compensating air channel 3 on the cylinder head body between spark plug mounting hole 2 and the air outlet flue 4 communicates with air outlet flue 4, secondary air compensating air channel 3 is a tapped hole with secondary air compensating air duct connecting end, and an end that makes the secondary air compensating air duct is realized and being connected of cylinder head by screw thread.
Claims (3)
1, a kind of single cylinder overhead integrated type water cooled engine cylinder head, which is provided with cooling water channel (1), one-piece camshaft mounting hole, spark plug mounting hole (2) and air outlet flue (4), it is characterized in that: on the cylinder head body of described air outlet flue (4) side, offer secondary air compensating air channel (3) and communicate with air outlet flue (4).
2, single cylinder overhead integrated type water cooled engine cylinder head according to claim 1, it is characterized in that: described secondary air compensating air channel (3) is positioned between spark plug mounting hole (2) and the air outlet flue (4).
3, single cylinder overhead integrated type water cooled engine cylinder head according to claim 1 and 2 is characterized in that: described secondary air compensating air channel (3) is a tapped hole with secondary air compensating air duct connecting end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520033613 CN2837534Y (en) | 2005-03-22 | 2005-03-22 | Integrated cylinder head for single-cylinder overhead water-cooled engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520033613 CN2837534Y (en) | 2005-03-22 | 2005-03-22 | Integrated cylinder head for single-cylinder overhead water-cooled engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2837534Y true CN2837534Y (en) | 2006-11-15 |
Family
ID=37392019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520033613 Expired - Fee Related CN2837534Y (en) | 2005-03-22 | 2005-03-22 | Integrated cylinder head for single-cylinder overhead water-cooled engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2837534Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102251833A (en) * | 2010-05-17 | 2011-11-23 | 通用汽车环球科技运作公司 | Mechanical vacuum pump integrated with coupled secondary air injection valve |
-
2005
- 2005-03-22 CN CN 200520033613 patent/CN2837534Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102251833A (en) * | 2010-05-17 | 2011-11-23 | 通用汽车环球科技运作公司 | Mechanical vacuum pump integrated with coupled secondary air injection valve |
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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: 20061115 |