CN201396203Y - Mounting structure of gulp valve - Google Patents
Mounting structure of gulp valve Download PDFInfo
- Publication number
- CN201396203Y CN201396203Y CN200920126757XU CN200920126757U CN201396203Y CN 201396203 Y CN201396203 Y CN 201396203Y CN 200920126757X U CN200920126757X U CN 200920126757XU CN 200920126757 U CN200920126757 U CN 200920126757U CN 201396203 Y CN201396203 Y CN 201396203Y
- Authority
- CN
- China
- Prior art keywords
- aeration valve
- platform
- valve
- cylinder head
- mounting structure
- 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
Links
- 238000005273 aeration Methods 0.000 claims description 75
- 238000007789 sealing Methods 0.000 claims description 6
- 239000007789 gas Substances 0.000 abstract description 18
- 229930195733 hydrocarbon Natural products 0.000 abstract description 9
- 150000002430 hydrocarbons Chemical class 0.000 abstract description 9
- 239000002912 waste gas Substances 0.000 abstract description 5
- 238000002485 combustion reaction Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 9
- 239000000446 fuel Substances 0.000 description 9
- 230000030279 gene silencing Effects 0.000 description 9
- 239000004215 Carbon black (E152) Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000007254 oxidation reaction Methods 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 238000011109 contamination Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 230000001502 supplementing effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 230000000644 propagated effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
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- Exhaust Gas After Treatment (AREA)
Abstract
The utility model relates to a mounting structure of gulp valve, which comprises a gulp valve, wherein a cylinder head of an engine is provided with a platform for arranging the gulp valve, the platform is communicated with a gulp channel which is communicated with an exhaust air duct of the cylinder head, the gulp valve is fixedly arranged on the platform through a bolt, and is communicated withthe exhaust air duct through the gulp channel. The mounting structure of the gulp valve leads fresh air to smoothly enter the exhaust air duct through the gulp valve, can oxide CO and hydrocarbons which are not fully burnt in high temperature and high pressure, reduces harmful gas in exhausted waste gas, and has simple mounting.
Description
Technical field
The utility model relates to a kind of making-up air device of motor, is specifically related to a kind of mounting structure of aeration valve.
Background technique
The toxic emission of motor is one of primary pollution source of urban atmosphere, the discharging of special carburetor gasoline engine, and petrol engine mainly comprises pollution of atmosphere: crank case vent pollutes 20% of the gross contamination amount that accounts for, and major pollutants are HC; Petrol tank ventilates and pollutes 5% of the gross contamination amount that accounts for; The pollution that fuel evaporation in the Carburetor and leakage form accounts for 5%～10% of gross contamination amount; Tail gas pollution accounts for 65%～85% of gross contamination amount, and it is most important to the discharging of control motor as seen to control the petrol engine tail gas pollution.
Hydrocarbon fuels in the internal-combustion engine if do not consider microimpurity in the fuel, will only produce CO in the firing chamber during perfect combustion
2And H
2O.But fuel is impossible perfect combustion in internal-combustion engine, and internal-combustion engine rotating speed when work is very high, the time of fuel combustion process is very short, make fuel can not mix evenly fully with combustion-supporting air, the fuel oxidation reaction not exclusively, in the exhaust of internal-combustion engine unburnt product must be arranged, for example CO and hydrocarbon.Concerning ignition internal combustion engine, for guaranteeing internal-combustion engine output is preferably arranged, need to adopt the rich mixture of air coefficient＜1, cause CO content sharp increase in the tail gas therefrom; In addition, internal-combustion engine fuel vaporization when cold starting is bad, and fuel is just discharged without burning greatly, causes hydrocarbon emission to increase severely.Therefore, adopt aeration valve to supply air usually, make the oxidation of trying one's best of toxic gas CO and hydrocarbon.At present, aeration valve generally is installed on the silencing apparatus, exhaust gas discharged has been lost a large amount of heat during to silencing apparatus through air outlet flue, and CO in the tail gas and hydrocarbon are only under the situation of High Temperature High Pressure and oxygen enrichment, could be further oxidized, make aeration valve be installed on the silencing apparatus, do not reach the ideal effect that makes the harmful gas oxidation; In addition, aeration valve is installed on the silencing apparatus, need offer gas supplementing opening on the outlet pipe of silencing apparatus, and in gas supplementing opening place welding suction tude, welding flange on the suction tude connects aeration valve with screw again, its mounting process complexity, air inlet pipeline easy-rupturing, welding difficulty.
Summary of the invention
The purpose of this utility model is the deficiency that exists at prior art, a kind of mounting structure of aeration valve is provided, this mounting structure makes fresh air successfully enter air outlet flue by aeration valve, under High Temperature High Pressure,, reduce the harmful gas in the discharging waste gas with imperfect combustion CO and oxidizing hydrocarbon; And install simple.
The purpose of this utility model is achieved in that and comprises aeration valve, one platform that is used to install aeration valve is set on the cylinder head of motor, described platform is provided with the tonifying Qi road that is communicated with the cylinder head air outlet flue, and aeration valve is fixed on the platform by screw and communicates with air outlet flue by the tonifying Qi road.
Described aeration valve is provided with flange plate, and aeration valve is fastened on the platform that is used to install aeration valve by flange.
The flange plate of described aeration valve is provided with at least two mounting holes, and the platform that being used to of cylinder head installed aeration valve is provided with the tapped hole corresponding with mounting hole on the flange plate.
Described aeration valve and being used to is installed between the platform of aeration valve and is provided with sealing gasket.
Owing to adopt technique scheme, aeration valve is communicated with air outlet flue by the tonifying Qi road, aeration valve plays the effect of supplying fresh air, compared with prior art, the utlity model has following advantage:
1) it is more outstanding to fall dirty performance, and emission effect is better.The temperature of cylinder head air outlet flue is higher than the temperature in the silencing apparatus far away, and aeration valve is installed on the cylinder head air outlet flue, can make in the tail gas CO and OXIDATION OF HYDROCARBONS reaction more abundant, and disposal of pollutants will reduce greatly.
2) the fresh air amount of charging into is more sufficient, and the tonifying Qi effect is more obvious.Because aeration valve is installed on the cylinder head, make aeration valve away from relief opening, be subjected to the influence of fluctuation of waste gas hot-fluid and molecular heat expanding little, the amount of fresh air that enters in the aeration valve is with regard to bigger, oxygen enrichment more; Simultaneously, it is behind at silencing apparatus that described aeration valve is installed in position on the cylinder head, so the silencing apparatus thermal baffle formed certain stopping to hot-fluid and tail gas, makes that the tonifying Qi effect of aeration valve is more obvious.
3) because the aeration valve mounting point in the behind of silencing apparatus, makes thermal baffle that hot-fluid and tail gas formation are stopped, so the utility model can also reduce the thermal radiation of relief opening to motor; Aeration valve and cylinder head are connected and fixed and are one simultaneously, have increased the heat diffusion area of cylinder head part, make its radiating effect better, can effectively improve the working life of engine component.
4) processing technology is simple, only needs at cylinder head platform is set, and aeration valve is fastened on this platform by flange and gets final product, be communicated with simultaneously the tonifying Qi road of cylinder head air outlet flue can be in the cylinder head press casting procedure single forming; Compare with the conventional mounting method, the utility model processing is simple, need be at gas supplementing opening place welding suction tude, flange plate, and air inlet pipeline can not rupture, and has improved its whole service life.
5) aeration valve adopts flange to be connected by flange plate and cylinder head platform, makes the installation of aeration valve compare with the conventional mounting position and has more aesthetic property, and the flange connection makes that the installation of aeration valve is simple.In addition, be provided with sealing gasket between aeration valve and the platform, guarantee the sealing of joint, the tonifying Qi better effects if.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is that the A of Fig. 1 is to view;
Fig. 3 is that the B of Fig. 2 is to view;
Fig. 4 is that the C of Fig. 2 is to view.
In the accompanying drawing, 1 is aeration valve, and 1a is the aeration valve inlet hole, and 1b is the aeration valve air outlet hole, and 1c is a flange plate, and 2 is screw, and 3 is sealing gasket, and 4 is air outlet flue, and 5 are the tonifying Qi road, and 6 is cylinder head, and 6a is a platform, and 6b is that cylinder head closes capping, and 7 is spark plug mounting hole.
Embodiment
Referring to figs. 1 through Fig. 4, the utility model comprises aeration valve 1, aeration valve is provided with aeration valve inlet hole 1a, inlet hole is communicated with the aeration valve inner chamber, aeration valve 1 lower end is provided with flange plate 1c, the center is provided with aeration valve air outlet hole 1b on the flange plate, and the flange plate 1c of aeration valve 1 is provided with at least two mounting holes, and mounting hole runs through flange plate.The one platform 6a that is used to install aeration valve is set on the cylinder head 6 of motor, the lid face that the is positioned at 6b outside of described platform 6a, the plane of platform 6b is higher than spark plug mounting hole 7, make aeration valve away from relief opening, be subjected to the influence of fluctuation of waste gas hot-fluid and molecular heat expanding little, the amount of fresh air that enters in the aeration valve is just bigger, oxygen enrichment more, and the tonifying Qi effect of aeration valve is more obvious.Platform 6a is provided with the tonifying Qi road 5 that is communicated with cylinder head air outlet flue 4, tonifying Qi road 5 is between air outlet flue 4 and aeration valve 1, tonifying Qi road 5 and the corresponding connection of aeration valve air outlet hole 1b make in the tail gas CO and OXIDATION OF HYDROCARBONS reaction more abundant, reduce discharge amount of exhaust gas greatly.The platform 6a that is used to install aeration valve on the cylinder head is provided with the tapped hole corresponding with mounting hole on the flange plate, the mounting hole that passes the flange plate of aeration valve by screw 2 is threaded with tapped hole on the platform, like this aeration valve is fixed on the platform 6a, make the flange plate 1c of aeration valve be connected with platform 6a flange, aeration valve communicates with air outlet flue 4 by tonifying Qi road 5.Aeration valve 1 and being used to is installed between the platform 6a of aeration valve and is provided with sealing gasket 3.
Working procedure of the present utility model: during engine running, the exhaust pressure in the cylinder head air outlet flue changes along with the work cycle of motor and pulses.When exhaust valve was opened, the High Temperature High Pressure waste gas in the cylinder entered rapidly in the outlet pipe, and pressure begins to raise, in outlet pipe, produce a high-voltage pulse, promptly have barotropic wave to produce, at this moment the one-way valve in the aeration valve is in closed condition, has avoided the high-temperature exhaust air adverse current to burn out aeration valve.This Pulse wave is propagated forward along exhaust duct, and when barotropic wave was propagated in the exhaust duct that pipeline section increases gradually, gas density descended, thereby just produces a suction wave and return.Position near aeration valve in air outlet flue forms a negative pressure, at this moment one side of one-way valve is barometric pressure, be negative pressure on one side, the tonifying Qi one-way valve is opened under the effect of pressure reduction, fresh air is entered in the cylinder head air outlet flue by the aeration valve inlet hole, for harmful gas CO, the HC of air outlet flue provides oxygen fully, make it further oxidized, reduce the discharging of harmful substance.
Claims (4)
1. the mounting structure of an aeration valve, comprise aeration valve (1), it is characterized in that: a platform (6a) that is used to install aeration valve is set on the cylinder head of motor (6), described platform (6a) is provided with the tonifying Qi road (5) that is communicated with cylinder head air outlet flue (4), and aeration valve is fixed on platform (6a) by screw (2) and upward communicates with air outlet flue (4) by tonifying Qi road (5).
2. the mounting structure of aeration valve according to claim 1, it is characterized in that: described aeration valve (1) is provided with flange plate (1c), and aeration valve (1) is fastened on the platform (6a) that is used to install aeration valve by flange.
3. the mounting structure of aeration valve according to claim 2, it is characterized in that: the flange plate (1c) of described aeration valve (1) is provided with at least two mounting holes, and the platform that is used to install aeration valve (6a) of cylinder head is provided with the tapped hole corresponding with mounting hole on the flange plate.
4. according to the mounting structure of the arbitrary described aeration valve of claim 1～3, it is characterized in that: described aeration valve (1) and be used to install between the platform (6a) of aeration valve and be provided with sealing gasket (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920126757XU CN201396203Y (en) | 2009-03-25 | 2009-03-25 | Mounting structure of gulp valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920126757XU CN201396203Y (en) | 2009-03-25 | 2009-03-25 | Mounting structure of gulp valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201396203Y true CN201396203Y (en) | 2010-02-03 |
Family
ID=41618712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920126757XU Expired - Fee Related CN201396203Y (en) | 2009-03-25 | 2009-03-25 | Mounting structure of gulp valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201396203Y (en) |
-
2009
- 2009-03-25 CN CN200920126757XU patent/CN201396203Y/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: 20100203 Termination date: 20130325 |