CN206360759U - Engine secondary air supply mechanism - Google Patents
Engine secondary air supply mechanism Download PDFInfo
- Publication number
- CN206360759U CN206360759U CN201621360835.9U CN201621360835U CN206360759U CN 206360759 U CN206360759 U CN 206360759U CN 201621360835 U CN201621360835 U CN 201621360835U CN 206360759 U CN206360759 U CN 206360759U
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- Prior art keywords
- air supply
- aeration valve
- supply passage
- cylinder cap
- engine
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Abstract
The utility model discloses a kind of engine secondary air supply mechanism, including cylinder head, cylinder cap and the air supply passage for being formed inside cylinder cap and cylinder head and being connected with the exhaust duct of engine, also include the aeration valve for being used to control air supply passage air inlet, aeration valve is arranged on cylinder cap；Aeration valve is mounted on cylinder cap, by being formed at the tonifying Qi into engine exhaust of the air supply passage inside cylinder cap and cylinder head, it can not only ensure that tonifying Qi is smooth, and aeration valve has certain distance away from exhaust duct, influence of the high temperature and high pressure produced at exhaust duct to aeration valve is substantially reduced, so as to extend the service life of aeration valve；And compact overall structure, the fresh air through entering in air supply passage can flow through cylinder cap and cylinder head from inside, have cooling effect to cylinder head and cylinder cap.
Description
Technical field
The utility model is related to motorcycle engine field, more particularly to a kind of engine secondary air supply mechanism.
Background technology
Traditional motorcycle engine also has part gaseous mixture not have complete burning after compression gaseous mixture acting is lighted,
But pass through emission by exhaust pipe to air the inside, so both waste Fuel Petroleum and also create larger air pollutants.For
The problem is solved, engine secondary combustion system is occurred in that in the prior art, that is, air compensating system is set, close to engine cylinder head
Vent position at secondary air compensating mouthful, and the installation aeration valve at secondary air compensating mouth are set, due to secondary air-supplementing valve and motor
The exhaust outlet of car engine cylinder head is too close, and exhaust port temperatures are too high, pressure is big, it is easy to cause the close of secondary air-supplementing valve
Seal rubber, reed ageing failure；Moreover, due to being provided near exhaust duct at the cylinder head of some cooling motorcycle engine waters
Cooling water channel, drilling forms the way of secondary air compensating mouthful and is likely to damage cooling water channel directly near exhaust outlet,
If avoided to cooling water channel, difficulty of processing can be greatly increased again, cost can also increase.
Accordingly, it would be desirable to be improved to existing engine secondary air supply mechanism, it is set to substantially reduce in secondary air compensating mistake
Pressure and temperature in journey suffered by aeration valve, improves its service life, and air supply passage is easily worked manufacture, and engine is whole
Body compact conformation.
Utility model content
In view of this, the utility model provides a kind of engine secondary air supply mechanism, it is substantially reduced in secondary air compensating
During pressure and temperature suffered by aeration valve, improve its service life, and manufacture is easily worked in air supply passage, start
Machine compact overall structure.
Engine secondary air supply mechanism of the present utility model, including cylinder head, cylinder cap and be formed inside cylinder cap and cylinder head simultaneously
The air supply passage connected with the exhaust duct of engine, in addition to for controlling the aeration valve of air supply passage air inlet, aeration valve is set
In on cylinder cap.
Further, air supply passage includes the cylinder cap air supply passage set gradually along tonifying Qi circulating direction and cylinder head tonifying Qi is logical
Road, the end of cylinder head air supply passage is run through to be set at the exhaust duct bifurcation of engine.
Further, cylinder head air supply passage and the cylinder cap air supply passage are the straight channel that vertically sets and coaxial
Set.
Further, it is integrally formed on cylinder cap to be provided with the aeration valve for connecting and being used for cylinder cap air supply passage and install aeration valve
Installation cavity.
Further, it is located at below the aeration valve to be provided with aeration valve installation cavity and prevents that high-temp waste gas is produced in air supply passage
The fire prevention unit altered on raw Mars.
Further, the mounting seat for installing fire prevention unit is provided with aeration valve installation cavity.
Further, cylinder cap is additionally provided with aeration valve installation cavity for installing the positioning positioned to fire prevention unit
Part.
Further, keeper is one of the forming in aeration valve installation cavity bottom and the locating dowel that upwardly extends.
Further, fire prevention unit is passage to be provided with flame screen, flame screen and for matching somebody with somebody with locating dowel formation positioning
The positioning hole of conjunction.
Further, aeration valve is unidirectionally opened including tonifying Qi bonnet, location and installation in aeration valve installation cavity and to cavity bottom
The valve block that opens and it is fixed in aeration valve installation cavity and for the banking stop spacing to valve block open degree.
The beneficial effects of the utility model：Engine secondary air supply mechanism of the present utility model, by aeration valve installation settings
On cylinder cap, by being formed at the tonifying Qi into engine exhaust of the air supply passage inside cylinder cap and cylinder head, it can not only ensure to mend
Gas is smooth, and aeration valve has influence of the high temperature and high pressure produced at certain distance, exhaust duct to aeration valve big away from exhaust duct
Big reduction, so as to extend the service life of aeration valve；And compact overall structure, the fresh air through entering in air supply passage can
Cylinder cap and cylinder head are flowed through from inside, there is cooling effect to cylinder head and cylinder cap.
Brief description of the drawings
The utility model is further described with reference to the accompanying drawings and examples.
Fig. 1 is the utility model structural representation；
Fig. 2 is enlarged drawing at A in Fig. 1；
Fig. 3 is the fireproof net structure schematic diagram in the utility model.
Embodiment
Fig. 1 is the utility model structural representation, and Fig. 2 is enlarged drawing at A in Fig. 1, and Fig. 3 is the fire prevention in the utility model
Arrow represents tonifying Qi flow direction in web frame schematic diagram, figure, as shown in the figure：The engine secondary air supply mechanism of the present embodiment,
Including cylinder head 4, cylinder cap 1 and the air supply passage for being formed at cylinder cap 1 and the inside of cylinder head 4 and being connected with the exhaust duct of engine, also wrap
The aeration valve for controlling air supply passage air inlet is included, aeration valve is arranged on cylinder cap 1；As illustrated, cylinder cap 1 is arranged on cylinder head 4
On, engine is during acting, and engine exhaust can produce positive and negative pressure alternately change air pressure, when producing negative pressure, mend
Inhaled and open by negative pressure inside air valve, extraneous fresh air can enter engine exhaust along from cylinder cap 1 to the air supply passage of cylinder head 4
6, with auxiliary exhaust mouthful combustible second-time burning, one can be had to cylinder cap 1 and cylinder head 4 by flowing through the fresh air of cylinder cap 1 and cylinder head 4
Fixed cooling effect；When engine exhaust 6 produces negative pressure, the high-temperature high-pressure fuel gas that engine is produced can be instantaneous along tonifying Qi
Altered on passage, because high-temperature high-pressure fuel gas need to flow to cylinder cap 1 through cylinder head 4 from bottom to top, it is elongated that it flows through path, and process is altered upper
It is middle to lose certain heat and pressure, so that the influence to aeration valve is substantially reduced.
In the present embodiment, the cylinder cap air supply passage 2 and cylinder head that air supply passage includes setting gradually along tonifying Qi circulating direction are mended
Gas passage 5, the end of cylinder head air supply passage 5 is run through to be set at the exhaust duct bifurcation of engine；Cylinder cap air supply passage 2 with
Cylinder head air supply passage 5 communicates with each other, and the end of cylinder head air supply passage 5 runs through that set at the exhaust duct bifurcation of engine can
Ensure two uniform tonifying Qi of exhaust duct of engine simultaneously.
In the present embodiment, cylinder head air supply passage 5 and cylinder cap air supply passage 2 are the straight channel that vertically sets and same
Axle is set；It is easily worked, and the circulation path of tonifying Qi is more smooth, does not result in obstruction or is delayed.
In the present embodiment, integrally formed be provided with connects with cylinder cap air supply passage 2 and for installing aeration valve on cylinder cap 1
Aeration valve installation cavity 3；Aeration valve is directly installed in aeration valve installation cavity 3, be not only easy to assembling, and equivalent to will mend
Air valve is arranged in cylinder cap 1, will not increase the overall volume of cylinder cap 1, structure becomes quite compact.
It is located to be provided with below aeration valve in the present embodiment, in aeration valve installation cavity 3 and prevents high-temp waste gas in air supply passage
The fire prevention unit 7 altered on the Mars of generation；When engine exhaust 6 produces negative pressure, the high-temperature high-pressure fuel gas that engine is produced
Instantaneously it can be altered along on air supply passage, and high-temperature fuel gas is possible to that Mars can be produced, and when running into fire prevention unit 7, can block fire
Altered on star, so as to ensure that the part of aeration valve will not be by flame burn.
In the present embodiment, the mounting seat 8 for installing fire prevention unit 7 is provided with aeration valve installation cavity 3；Form preferable
Fire prevention unit 7, can be directly installed in mounting seat by mounting structure, be easy to assembling, and mounting seat is to be formed at aeration valve installation cavity 3
Boss structure on madial wall.
In the present embodiment, cylinder cap 1 is additionally provided with aeration valve installation cavity 3 to be positioned for being installed to fire prevention unit 7
Keeper 9；Keeper 9 is one of the forming in the bottom of aeration valve installation cavity 3 and the locating dowel that upwardly extends；Keeper can be to anti-
The installation of fiery unit 7 is positioned, to prevent it from rocking, and keeper is the locating dowel integrally formed with cylinder cap 1, is not only easy to
Manufacture, and structural strength is high, easily realizes.
In the present embodiment, fire prevention unit 7 is to be provided with passage 10 and for being formed with locating dowel on flame screen, flame screen
The positioning hole 11 of location fit；Flame screen is platy structure, and it is made up of prior art fire proofing material, passes through ventilation on flame screen
Tonifying Qi is realized in hole, and realizes the location and installation of its own by the cooperation of positioning hole and locating dowel.
In the present embodiment, aeration valve includes tonifying Qi bonnet 12, location and installation in aeration valve installation cavity and to cavity bottom
The valve block 13 unidirectionally opened and it is fixed in aeration valve installation cavity and for the banking stop 14 spacing to valve block open degree；Aeration valve
Also include sealed colloid 15 and screw 16, be provided with valve seat in aeration valve installation cavity, screw is by banking stop, valve block and sealed colloid
Fix and be arranged on valve seat, then bonnet is fixed on to be formed at the upper shed of aeration valve installation cavity and installed.
Finally illustrate, above example is only unrestricted to illustrate the technical solution of the utility model, although ginseng
The utility model is described in detail according to preferred embodiment, it will be understood by those within the art that, can be to this
The technical scheme of utility model is modified or equivalent substitution, without departing from the objective and model of technical solutions of the utility model
Enclose, it all should cover among right of the present utility model.
Claims (10)
1. a kind of engine secondary air supply mechanism, it is characterised in that：Including cylinder head, cylinder cap and it is formed inside cylinder cap and cylinder head simultaneously
The air supply passage connected with the exhaust duct of engine, in addition to for controlling the aeration valve of air supply passage air inlet, the aeration valve
It is arranged on cylinder cap.
2. engine secondary air supply mechanism according to claim 1, it is characterised in that：The air supply passage is included along tonifying Qi
Cylinder cap air supply passage and cylinder head air supply passage that circulating direction is set gradually, the end of the cylinder head air supply passage, which is run through, starts
Set at the exhaust duct bifurcation of machine.
3. engine secondary air supply mechanism according to claim 2, it is characterised in that：The cylinder head air supply passage and described
Cylinder cap air supply passage is the straight channel vertically set and is coaxially disposed.
4. engine secondary air supply mechanism according to claim 1, it is characterised in that：It is integrally formed on the cylinder cap to set
There is the aeration valve installation cavity for connecting and being used for cylinder cap air supply passage and install aeration valve.
5. engine secondary air supply mechanism according to claim 4, it is characterised in that：It is located in the aeration valve installation cavity
The fire prevention unit for preventing being altered in air supply passage on the Mars of high-temp waste gas generation is provided with below the aeration valve.
6. engine secondary air supply mechanism according to claim 5, it is characterised in that：Set in the aeration valve installation cavity
There is the mounting seat for installing fire prevention unit.
7. engine secondary air supply mechanism according to claim 5, it is characterised in that：The cylinder cap is pacified in the aeration valve
It is additionally provided with behaveing affectedly for installing the keeper positioned to fire prevention unit.
8. engine secondary air supply mechanism according to claim 7, it is characterised in that：The keeper be one of the forming in
The aeration valve installation cavity bottom and the locating dowel upwardly extended.
9. engine secondary air supply mechanism according to claim 8, it is characterised in that：The fire prevention unit is flame screen,
Passage is provided with the flame screen and for the positioning hole with locating dowel formation location fit.
10. the engine secondary air supply mechanism according to claim 1-9 any claims, it is characterised in that：It is described to mend
Air valve includes tonifying Qi bonnet, location and installation is in the valve block unidirectionally opened in aeration valve installation cavity and to cavity bottom and is fixed on benefit
In air valve installation cavity and for the banking stop spacing to valve block open degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621360835.9U CN206360759U (en) | 2016-12-12 | 2016-12-12 | Engine secondary air supply mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621360835.9U CN206360759U (en) | 2016-12-12 | 2016-12-12 | Engine secondary air supply mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206360759U true CN206360759U (en) | 2017-07-28 |
Family
ID=59374726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621360835.9U Active CN206360759U (en) | 2016-12-12 | 2016-12-12 | Engine secondary air supply mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206360759U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106499485A (en) * | 2016-12-12 | 2017-03-15 | 重庆小康工业集团股份有限公司 | Secondary air compensating system of motorcycle engine |
-
2016
- 2016-12-12 CN CN201621360835.9U patent/CN206360759U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106499485A (en) * | 2016-12-12 | 2017-03-15 | 重庆小康工业集团股份有限公司 | Secondary air compensating system of motorcycle engine |
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