CN2779083Y - Cylinder head of single-cylinder top-arranged integrated water-cooling engine with double exhaust channel - Google Patents
Cylinder head of single-cylinder top-arranged integrated water-cooling engine with double exhaust channel Download PDFInfo
- Publication number
- CN2779083Y CN2779083Y CN 200520033617 CN200520033617U CN2779083Y CN 2779083 Y CN2779083 Y CN 2779083Y CN 200520033617 CN200520033617 CN 200520033617 CN 200520033617 U CN200520033617 U CN 200520033617U CN 2779083 Y CN2779083 Y CN 2779083Y
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- Prior art keywords
- air
- secondary air
- cylinder head
- flue
- 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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Abstract
The utility model relates to a single-cylinder overhead integrated type double exhaust passage 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 and an exhaust passage are arranged on the utility model. The exhaust passage is a double exhaust passage with two outlets. The cross position of the two outlet ends of the exhaust passage is provided with the secondary air supply passage which is communicated with the 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 double air flue water cooled engine of the single cylinder overhead integrated type cylinder head of secondary air compensating air channel.
Background technique
CO, HC and NO that motorcycle engine mixed gas burning back ejects from silencing apparatus
XBe main pollutant, 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 the double air flue water cooled engine of a kind of single cylinder overhead integrated type cylinder head, offers complexity, the problem of processing difficulties with secondary air compensating air channel on the cylinder head in the solution prior art.
The double air flue water cooled engine of single cylinder overhead integrated type described in the utility model cylinder head, which is provided with cooling water channel and air outlet flue, this air outlet flue is the double air flue with two outlets, offers the secondary air compensating air channel in air outlet flue two outlet end intersections and communicates with air outlet flue.
Be provided with boss in air outlet flue two outlet end intersection centres, 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 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 double air flue water cooled engine of the single cylinder overhead integrated type 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 the double air flue water cooled engine of single cylinder overhead integrated type described in the utility model cylinder head looks schematic representation;
Fig. 2 is the plan view of Fig. 1,
Fig. 3 is the left view of Fig. 1.
Embodiment
Referring to accompanying drawing 1 one Fig. 3, the double air flue water cooled engine of this single cylinder overhead integrated type cylinder head, which is provided with cooling water channel 1, one-piece camshaft mounting hole and air outlet flue 4, this air outlet flue 4 is for having the double air flue of two outlets, be provided with boss 3 in 4 liang of outlet end of air outlet flue, 5 intersection centres, offer secondary air compensating air channel 2 on this boss 3 and communicate with air outlet flue 4.Secondary air compensating air channel 2 is a tapped hole at an end of boss 3, and an end that makes the secondary air compensating air duct is realized and being connected of cylinder head by screw thread.
The position that offers the boss 3 of secondary air compensating air channel 2 also can be arranged on the end face or the bottom surface of 4 liang of outlet end 5 intersections of air outlet flue.
Claims (3)
1, the double air flue water cooled engine of a kind of single cylinder overhead integrated type cylinder head, which is provided with cooling water channel (1), one-piece camshaft mounting hole and air outlet flue (4), this air outlet flue (4) is characterized in that: offer secondary air compensating air channel (2) in air outlet flue (4) two outlet end (5) intersections and communicate with air outlet flue (4) for having the double air flue of two outlets.
2, the double air flue water cooled engine of single cylinder overhead integrated type according to claim 1 cylinder head, it is characterized in that: be provided with boss (3) in air outlet flue (4) two outlet end (5) intersection centres, described secondary air compensating air channel (2) is opened on this boss (3).
3, the double air flue water cooled engine of single cylinder overhead integrated type according to claim 2 cylinder head, it is characterized in that: described secondary air compensating air channel (2) is a tapped hole at an end of boss (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520033617 CN2779083Y (en) | 2005-03-22 | 2005-03-22 | Cylinder head of single-cylinder top-arranged integrated water-cooling engine with double exhaust channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520033617 CN2779083Y (en) | 2005-03-22 | 2005-03-22 | Cylinder head of single-cylinder top-arranged integrated water-cooling engine with double exhaust channel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2779083Y true CN2779083Y (en) | 2006-05-10 |
Family
ID=36753171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520033617 Expired - Fee Related CN2779083Y (en) | 2005-03-22 | 2005-03-22 | Cylinder head of single-cylinder top-arranged integrated water-cooling engine with double exhaust channel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2779083Y (en) |
-
2005
- 2005-03-22 CN CN 200520033617 patent/CN2779083Y/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: 20060510 |