CN104279038A - Air check valve device for exhaust pipe of automobile - Google Patents
Air check valve device for exhaust pipe of automobile Download PDFInfo
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- CN104279038A CN104279038A CN201310297747.3A CN201310297747A CN104279038A CN 104279038 A CN104279038 A CN 104279038A CN 201310297747 A CN201310297747 A CN 201310297747A CN 104279038 A CN104279038 A CN 104279038A
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- exhaust pipe
- valve device
- automobile exhaust
- hollow ball
- air
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Abstract
汽车排气管空气止回阀装置为汽车排气管的辅助装置，属于发动机节能减排领域。解决汽车在行驶中尾气不达标问题。异形金属外壳内，装有空心球、回位弹簧；异形金属外壳外，焊接有法兰盘。空心球表面光洁度要高、质量尽可能輕、还要有一定强度，选用不锈钢材料；回位弹簧选用圆锥形压簧，可增加空心球回位的方向性。回位弹簧一端焊接在空心球上，另一端焊接在壳体内璧，焊点不少于三个点；空心球、回位弹簧和进气口管要在同一中心线上，有利于提高空心球回位的速度和密封性；进气口管与出气口管的管径要相同、且按外壳箭头方向安装，保证空心球被高压废气流推开时，不会堵住出气口管，空心球上方通道要留有足够的气流空间。
An air check valve device for an automobile exhaust pipe is an auxiliary device for an automobile exhaust pipe and belongs to the field of engine energy saving and emission reduction. Solve the problem that the exhaust gas does not meet the standard when the car is running. Inside the special-shaped metal shell, hollow balls and return springs are installed; outside the special-shaped metal shell, a flange is welded. The surface finish of the hollow ball should be high, the quality should be as light as possible, and it should have a certain strength. The stainless steel material should be selected; the return spring should be a conical compression spring, which can increase the directionality of the return of the hollow ball. One end of the return spring is welded to the hollow ball, and the other end is welded to the inner wall of the shell. There are no less than three welding points; Return speed and tightness; the diameter of the air inlet pipe and the air outlet pipe should be the same, and should be installed in the direction of the arrow on the shell to ensure that the air outlet pipe will not be blocked when the hollow ball is pushed away by the high-pressure exhaust flow. There should be sufficient airflow space in the upper channel.
Description
Technical field:
The present invention relates to a kind of auxiliary device of automobile exhaust pipe, belong to motor car engine energy-saving and emission-reduction field.
Background technique:
In electronic automobile, the effect of lambda sensor is the content detecting oxygen in waste gas in outlet pipe.Engine electric-controlled unit (ECU) feeds back to the voltage signal of oxonium ion in waste gas according to lambda sensor, real-time adjustment fuel injection quantity, make the mixed gas concentration ratio entering cylinder, reach theoretical value 14.7: 1 (air ratio fuel oil), such proportion relation can realize fuel oil perfect combustion, makes exhaust emissions up to standard.But automobile under steam tail gas usually can not be up to standard.Reason is that the parameter that lambda sensor detects is not exclusively true, accurate.Analyzing its problem place, is because each cylinder exhaust of motor is discontinuous, in each cylinder exhaust interval time, can pour in a certain amount of air, enter near lambda sensor from exhaust pipe mouth.Oxygen in this part air, the proportionate relationship in original waste gas in outlet pipe can be changed, add the content of oxygen in waste gas, make lambda sensor feed back to the signal of mistake, ECU is according to the signal (thinking that mixed gas is excessively rare by mistake) of mistake, add fuel injection quantity, this fuel oil added can cause the waste of the energy, three-way catalyst overload and three-way catalyst premature failure, also can cause tail gas cannot be up to standard, especially in big city, during automobile is in, under low speed driving situation, especially seriously.
Patent of the present invention provides a kind of automobile exhaust pipe air back valve device, and prevent has air to pour in outlet pipe within each cylinder exhaust interval time, improves the reliability that lambda sensor detects data, realizes energy-saving and emission-reduction.
This is for a new discovery of motor car engine, new problem, through retrieval, before, state, does not inside and outsidely have same utility model patent to deliver, so, determine to apply for utility model patent.
Summary of the invention:
The object of patent of the present invention is before electronic automobile blow-down silencer, increase an automobile exhaust pipe air back valve device, wish to solve the automobile tail gas problem not up to standard that exists of motor under steam, and this device is applicable to the vent systems of various automatically controlled configuration car.
According to claim, the technical problem that patent of the present invention will solve is as follows:
1. an automobile exhaust pipe air back valve device, in profiled metal shell, hollow spheres, return spring are housed, outside profiled metal shell, be welded with flange plate, it is characterized in that: return spring welds respectively with hollow spheres and inner walls, flange plate design need according to automobile exhaust pipe diameter matches, because inlet tube and air outlet are managed not in same level, to assemble according to the arrow of shell during installation.
2. automobile exhaust pipe air back valve device according to claim 1, it is characterized in that: hollow spheres is body of stainless steel, stainless steel hollow spheres and inlet tube are on same center line.
3. automobile exhaust pipe air back valve device according to claim 1, it is characterized in that: return spring is conical stage clip, return spring and inlet tube are on same center line.
4. automobile exhaust pipe air back valve device according to claim 1, is characterized in that: the inlet tube of shell is identical with the diameter of air outlet pipe.
As follows for solving the technological scheme that above technical problem takes:
One, the hollow spheres of automobile exhaust pipe air back valve device, as Fig. 1-1, effect to prevent pouring in (good airproof performance) of air, do not affect again the normal discharge of waste gas, so surface finishment is wanted height, quality requirement Jin Ke Neng Light, also will be had some strength, adopt stainless steel material; Hollow spheres and inlet tube require as far as possible on same center line, are conducive to the speed and the sealing that improve hollow spheres return.The butt welding point of hollow spheres and spring will be no less than three points, can increase the directivity of hollow spheres return.
Two, the return spring of automobile exhaust pipe air back valve device, as Fig. 1-2, select conical stage clip, one end is welded on hollow spheres, the other end is welded on housing (Fig. 1-6) interior ancient piece of jade, round, flat and with a hole in its centre, by its elastic force, hollow spheres is pressed on the internal orifice of inlet tube (Fig. 1-4).Return spring and inlet tube, on same center line, can ensure that hollow spheres return is timely, good sealing effect.
Three, when automobile exhaust pipe air back valve device is in order to ensure that waste gas passes through, resistance is minimum, inlet tube manages (Fig. 1-5) caliber with air outlet is identical and press the shell direction of arrow and install, when ensureing that hollow spheres is pushed open by high pressure exhaust gas stream, hollow spheres can not block air outlet pipe on the one hand, and hollow spheres upper run has enough airflow spaces on the other hand.
Beneficial effect of the present invention:
One, high in technological content: automobile exhaust pipe air back valve device is an innovation in theory, also nobody relates to the research of this problem at present; Technical innovation, can realize the control poured in exhaust pipe mouth air, improves the precision of the detection data of lambda sensor.
Two, practical: automobile exhaust pipe air back valve apparatus structure is simple, practical, do not need to carry out large change to original vehicle structure, be applicable to the various repacking that automatical control system vehicle is housed.
Three, energy-saving and emission-reduction: automobile exhaust pipe air back valve device is started with from drop, improve the exhaust emissions situation of motor, avoid transition consumption and the waste of fuel oil, up to standard early to vehicle vehicle exhaust, have certain positive effect.
Accompanying drawing illustrates:
Below in conjunction with accompanying drawing, patent of the present invention is further illustrated.
Fig. 1 is automobile exhaust pipe air back valve apparatus structure schematic diagram, and in figure, 1 is hollow steel ball; 2 is conical return spring; 3 is flange plate; 4 is inlet tube; 5 is air outlet pipe; 6 is shell.
Fig. 2 is automobile exhaust pipe air back valve device scheme of installation, disalignment during for avoiding steel ball action, and the direction of arrow is the sensing of this device when installing.
Embodiment:
The hollow spheres of automobile exhaust pipe air back valve device will be selected according to the discharge capacity of automobile, and discharge capacity is large, and spheroid mass is also large, and, high temperature and high pressure environment large to super large discharge, impulsive contact force, also can change stainless steel hollow ball material into spheroidal graphite cast iron, increase its intensity; In addition, during exhaust, hollow spheres rear there will be certain gas, contributes to alleviating part of impact force; To be consistent with the caliber of former vehicle exhaust pipe into and out of tracheae caliber.
High temperature resistant conical stage clip selected by the return spring of automobile exhaust pipe air back valve device.The big end surface of spring and inwall butt welding, the little end surface of spring and steel ball butt welding.The elastic force of spring is moderate, and sealing pressure does not need too large, in order to avoid impact exhaust; Certain intensity to be had, not by compressive strain during back blast.
The shell of automobile exhaust pipe air back valve device conveniently makes, and can be divided into two-part, left-half is less than right half part, and right half part installs hollow ball and spring, finally, is welded as a whole two-part for left and right;
For new car, when making outlet pipe, this device can be directly installed.Conveniently used car is reequiped, automobile exhaust pipe air back valve device can dock with flange plate, when two flange plate of docking weld with the mouth of pipe, a mouth of pipe inside contracts 5mm, another mouth of pipe exposes 5mm, and during docking, mouth of pipe seam concealment is in flange plate, add asbestos packing sealing in the middle of flange plate again, further increase the sealing of check vavle device.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310297747.3A CN104279038A (en) | 2013-07-07 | 2013-07-07 | Air check valve device for exhaust pipe of automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310297747.3A CN104279038A (en) | 2013-07-07 | 2013-07-07 | Air check valve device for exhaust pipe of automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104279038A true CN104279038A (en) | 2015-01-14 |
Family
ID=52254309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310297747.3A Pending CN104279038A (en) | 2013-07-07 | 2013-07-07 | Air check valve device for exhaust pipe of automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104279038A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5845486A (en) * | 1995-08-09 | 1998-12-08 | Nippondenso Co., Ltd. | Internal combustion engine exhaust gas purifier apparatus |
| DE19800654A1 (en) * | 1998-01-09 | 1999-07-15 | Emitec Emissionstechnologie | Heated catalyst arrangement with an upstream water trap |
| CN201502426U (en) * | 2009-08-14 | 2010-06-09 | 蔡土金 | Device for controlling noise reduction in inclination-based exhaust |
| CN202768112U (en) * | 2012-04-10 | 2013-03-06 | 傅志深 | Silencer |
| CN203604025U (en) * | 2013-07-07 | 2014-05-21 | 烟台南山学院 | Air check valve device for automobile exhaust pipe |
-
2013
- 2013-07-07 CN CN201310297747.3A patent/CN104279038A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5845486A (en) * | 1995-08-09 | 1998-12-08 | Nippondenso Co., Ltd. | Internal combustion engine exhaust gas purifier apparatus |
| DE19800654A1 (en) * | 1998-01-09 | 1999-07-15 | Emitec Emissionstechnologie | Heated catalyst arrangement with an upstream water trap |
| CN201502426U (en) * | 2009-08-14 | 2010-06-09 | 蔡土金 | Device for controlling noise reduction in inclination-based exhaust |
| CN202768112U (en) * | 2012-04-10 | 2013-03-06 | 傅志深 | Silencer |
| CN203604025U (en) * | 2013-07-07 | 2014-05-21 | 烟台南山学院 | Air check valve device for automobile exhaust pipe |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150114 |