CN101324207A - Exhaust brake - Google Patents
Exhaust brake Download PDFInfo
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- CN101324207A CN101324207A CNA2008101260496A CN200810126049A CN101324207A CN 101324207 A CN101324207 A CN 101324207A CN A2008101260496 A CNA2008101260496 A CN A2008101260496A CN 200810126049 A CN200810126049 A CN 200810126049A CN 101324207 A CN101324207 A CN 101324207A
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- exhaust brake
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- exhaust
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- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
Abstract
The invention relates to an exhaust brake, including a valve body (01), a disc piece (02), a supporting rod (03), a supporting sleeve (14), a pressure relief valve (05), a spring (06), an adjustment support (09) and a cover (08), wherein, the supporting rod (03) and the supporting sleeve (14) are used for fixing the disc piece (02) at the specified position on the valve body (01), and driving the disc piece (02) to rotate around the axis thereof; the disc piece (02) is opened with a first cavity (21) and a second cavity (22); the pressure relief valve (05) is pressed at the bottom of the second cavity (22) by the spring (06), a clamp (07), the adjustment support (09) and the cover (08); the spring (06) is used for adjusting the working pressure of the exhaust brake assembly. The exhaust brake of the invention can release the unnecessary pressure in time when the pressure exceeds a setting value caused by any contingency, so as to ensure the working pressure to be stable and reliable, the working pressure is adjustable, and the implementation is simple and convenient.
Description
Technical field
The present invention relates to a kind of exhaust brake that has regulator, and a kind of method that prevents from exhaust brake, to form overvoltage.Make the working pressure of exhaust brake reliable and stable, and can regulate.
Technical background
Auto brake system is one of important device of Hyundai Motor high speed, safety traffic.When vehicle need slow down particularly in the mountain area or city bus when needing frequent braking, if frequently use service brake, will cause wheel drag overheated and make braking ability decline, as untimely taking emergency measures (cooling of stopping), even can cause braking total failure and the vehicle condition of causing danger.So adopt nothing decline property auxiliary braking system to be very important at this type of situation.Use complemental brake system can strengthen the vehicle braked performance, need not use or use less foundation brakes (traditional friction brake) just vehicle can be controlled in certain safety speed scope, the prevention car brakeing is malfunctioning, guarantee traffic safety, the Security when particularly strengthening the heavy-duty vehicle lower long slope.Use retarder can reduce the frequency of utilization of main Service Brake (friction brake) significantly simultaneously, thereby reduce the wearing and tearing of foundation brakes braking hub and friction plate, improve its working life, prolong the service cycle of foundation brakes simultaneously, reduce maintenance cost, improve the Security and the travelling comfort of driving, reduce driver's fatigue, increase work efficiency.
In the auxiliary brake device for automobile that uses at present, exhaust brake is simple in structure because of it, reliable performance, and operation is easy for installation easily, and he has obtained using widely as a kind of complemental brake system.Exhaust brake is that a dishful of valve and rotating mechanism are installed in the engine exhaust pipeline, increases the exhaust stroke resistance by closing this dish valve, and the exhaust that utilizes motor is as auxiliary braking.Yet the engine exhaust pipeline normally according to exhaust gas temperature, air pressure with and back pressure design, do not consider that gas exhaust piping is closed and the excessive abnormal conditions of build-up of pressure fully when adopting exhaust braking, and this situation is in case take place and will exhaust braking be caused damage; On the other hand, owing to there is not controlling device, braking force is not steady state value just, but increases with the rotating speed of motor, will cause damage to motor in case pressure surpasses the numerical value of motor permission.Though can reduce its pressure maximum by increasing pressure relief vent, also increased virtually and produced the time of back pressure, braking is serious to lag behind so can cause equally, and same force value is also unstable.In addition because the serious hysteresis of braking so often make it lose braking effect, also can cause accident to take place when serious.
Summary of the invention
Unstable and non-adjustable at the back pressure that existing exhaust brake exists, the serious shortcoming that lags behind of braking the object of the present invention is to provide a kind ofly can in time discharge excess pressure, keeps the braking working pressure stable, and the sensitive exhaust brake of braking reflection.
For achieving the above object, the present invention adopts following technological scheme:
A kind of exhaust brake, comprise valve body, video disc, strut, supporting sleeve, reduction valve, spring, adjusting support and lid, strut and supporting sleeve are used for video disc is fixed on the specified position of valve body, and drive video disc around its rotational, have first chamber and second chamber above the video disc, reduction valve is supported by spring, pressing plate, adjusting and lid is pressed in the bottom in second chamber, and spring is used for regulating the size of the working pressure of exhaust brake assembly.
Adopt the exhaust brake of structure of the present invention can accurately control the working pressure size of assembly, and reflect sensitivity, braking is steadily reliable.
Description of drawings:
Fig. 1: existing exhaust brake schematic representation;
The C-C view of Fig. 2: Fig. 1;
Fig. 3: the braking curve of existing exhaust brake;
Fig. 4: exhaust brake structural representation of the present invention (exhaust steam passage is in off state);
The C-C view of Fig. 5: Fig. 4;
Fig. 6: exhaust brake structural representation of the present invention (exhaust steam passage is in opening state);
The C-C view of Fig. 7: Fig. 6;
Fig. 8: exhaust brake second of the present invention is implemented structural representation, and (exhaust steam passage is in off state;
The C-C view of Fig. 9: Fig. 8;
Figure 10: exhaust brake second of the present invention is implemented structural representation, and (exhaust steam passage is in opening state;
The C-C view of Figure 11: Figure 10:
Figure 12: the braking curve of exhaust brake of the present invention.
Embodiment
The present invention will be further described below in conjunction with accompanying drawing.
Structural principle for a more clear understanding of the present invention illustrates novelty of the present invention, creativeness, and compares with other disclosed slowing down speed of engine structures, earlier Fig. 1 is analyzed.
Structure shown in Fig. 1,2 is the structural representation of existing exhaust brake, and strut 03 is fixed on video disc 02 specified position of valve body 01.The direction of arrow is the flow direction of waste gas.11 for video disc is in open mode, and 12 are in closed condition for video disc.Driving video disc 02 by strut 03 during exhaust brake work rotates around its axle center, make video disc by 11 rotated position to 12 positions, thereby close outlet pipe, along with increasing of waste gas, pressure in the chamber 21 increases thereupon, thereby hinders engine running, and then implements braking, in order to prevent the excessive infringement motor of pressure in the chamber 21, increase by a pressure relief vent 04 in the appropriate location of video disc 02 simultaneously.When needing brake off, by strut 03 drive video disc 02 by 12 rotated position to 11 positions, thereby open outlet pipe, waste gas can flow to chamber 22 by chamber 21, motor is in normal acting pattern.
As seen from Figure 1, the pressure when being in braking state in the chamber 21 are not invariable, but along with the waste gas in the chamber 21 increase and progressively increase, simultaneously because the existence of pressure relief vent 04, and the predetermined numerical value that the pressure in the chamber 21 can instantaneous increase.
Fig. 3 is the braking curve of the exhaust brake of figure one structure, can see that the braking force of exhaust brake changes along with change in rotational speed from curve, is not constant numerical value.In case the scope that braking force is permitted above motor will cause severe impairment to motor.
For this reason, purpose of the present invention is exactly to solve existing the problems referred to above, can be summarized as follows:
1, want accurately to control the engine exhaust resistance, in time discharge excess pressure, and this adjustable in pressure;
2, the braking reflection time will lack, and reliable.
Introduce the specific embodiment of the present invention below in conjunction with Fig. 4-7.Fig. 3 is in off state for exhaust steam passage, and Fig. 6 is in open mode for exhaust steam passage.All all use identical numbering with parts that the front has identical function among Fig. 4-7.
The component that valve body 01 is used for finishing braking function consist of an assembly, and strut 03 and supporting sleeve 14 are used for video disc 02 is fixed on the specified position of valve body 01, and the direction of arrow is represented the flow direction of waste gas.Have above the video disc 02 chamber 21 and chamber 22, one reduction valve 05 by spring 06, pressing plate 07, regulate and support 09 and cover 08 bottom that is pressed in chamber 22, at this moment, reduction valve 05 is divided into two-part to chamber 22 and chamber 32; In the time of need not braking, video disc 02 is in 11 positions, and motor is in normal acting pattern.When needs are braked, strut 03 drive video disc 02 around its axis by 11 rotated position to 12 positions, thereby close exhaust duct, along with the running of motor, its exhaust resistance is increasing, pressure in the corresponding chamber 21 is also increasing, because chamber 21 and chamber 32 is communicated with, thus the pressure in the chamber 32 also increase thereupon, when the pressure in the chamber 32 increases to when being enough to overcome the active force of spring 06, will promote reduction valve 05 and move downward, away from valve seat; Pressurized gas in the chamber 32 chamber 22 of just flowing through, chamber 23 flows in the gas exhaust piping, pressure in the chamber 32 reduces because of the discharge of waste gas simultaneously, when the gas pressure in the chamber 32 is not enough to overcome the active force of spring 06, reduction valve will move up, up to the bottom that is pressed in chamber 32 again, and chamber 32 and chamber 22 are kept apart again.Pressure in this back cavity 32 can continue again to raise, and then repeats said process, and when the needs brake off, strut 03 drives video disc 02 and rotates, and to 11 positions, open the exhaust passage by 12 rotated position, and motor enters normal acting pattern.Learn from the above mentioned,, do not change with change in rotational speed because the effect of reduction valve can make the pressure in the chamber 21 remain in certain scope; Simultaneously owing to removed pressure relief vent, but make the pressure moment in the chamber 21 rise to predetermined value, make and brake more flexibility and reliability.
Fig. 8-the 11st, a kind of distressed structure of the present invention, adopt the independently mechanism of decompressor, video disc section 02 strut 03 and strut 13 are fixed on the specified position of valve body 01, and video disc 02 can rotate with strut 03, one independently the mechanism of decompressor be installed on the valve body 01, reduction valve 05 is supported 09 by pressing plate 14, spring 06, pressing plate 07 and adjusting and is fixed on the valve seat of 21 bottoms, chamber, chamber 22 communicates by chamber 23 and gas exhaust piping, initial position reduction valve 05 is divided into two-part to chamber 21 and chamber 22, this independently the mechanism of decompressor can be installed on the position of valve body any appropriate.
Figure 12 is the braking curve of the exhaust brake of structure of the present invention, from plotted curve, can see that braking curve at the beginning is steep especially, become a horizontal line then soon, the braking force of expression exhaust brake can reach predetermined braking force soon being to increase rapidly with the increase of speed at first.Braking force will keep a constant value subsequently, and no longer the variation with speed changes, so brake percentage is more steady.
By above-mentioned description to structural principle of the present invention, as can be seen, structure of the present invention can accurately be controlled the engine exhaust resistance, and this adjustable in pressure; The braking reflection time will lack, and sensitive reliable.The present invention is simple in structure in addition, and it is convenient to implement, and manufacture cost is lower, is easy to realize.And apparatus of the present invention are when being in closed condition, and motor can keep the pattern of doing work normally, is not subjected to the influence of exhaust brake.Last structure of the present invention, only need reserve the position that connects exhaust brake in place and get final product without any need for change motor.
Claims (8)
1, a kind of exhaust brake, comprise valve body (01), video disc (02), strut (03), supporting sleeve (14), reduction valve (05), spring (06), regulate and support (09) and lid (08), strut (03) and supporting sleeve (14) are used for a video disc (02) and are fixed on the specified position of valve body (01), and drive video disc (02) around its rotational, have first chamber (21) and second chamber (22) above the video disc (02), reduction valve (05) is by spring (06), pressing plate (07), regulate to support (09) and cover the bottom that (08) is pressed in second chamber (22), spring (06) is used for regulating the size of the working pressure of exhaust brake assembly.
2, exhaust brake according to claim 1 is characterized in that reduction valve (05) can be placed on the place of any needs.
3, exhaust brake according to claim 1 and 2 is characterized in that reduction valve (05) and break valve body (01) are separate.
4, exhaust brake according to claim 1 and 2 is characterized in that reduction valve (05) uses a steel ball.
5, exhaust brake according to claim 3 is characterized in that reduction valve (05) uses a steel ball.
6, exhaust brake according to claim 1 and 2 is characterized in that increasing between reduction valve (05) and the spring (06) a ball-type pad.
7, exhaust brake according to claim 3 is characterized in that increasing between reduction valve (05) and the spring (06) a ball-type pad.
8, exhaust brake according to claim 1 and 2 is characterized in that first chamber (21) is communicated with gas exhaust piping by second chamber (22), the 3rd chamber (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101260496A CN101324207A (en) | 2007-07-15 | 2008-07-02 | Exhaust brake |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200710137250XA CN101251048A (en) | 2007-07-15 | 2007-07-15 | Exhaust brake |
| CN200710137250.X | 2007-07-15 | ||
| CNA2008101260496A CN101324207A (en) | 2007-07-15 | 2008-07-02 | Exhaust brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101324207A true CN101324207A (en) | 2008-12-17 |
Family
ID=39954616
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200710137250XA Pending CN101251048A (en) | 2007-07-15 | 2007-07-15 | Exhaust brake |
| CNA2008101260496A Pending CN101324207A (en) | 2007-07-15 | 2008-07-02 | Exhaust brake |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200710137250XA Pending CN101251048A (en) | 2007-07-15 | 2007-07-15 | Exhaust brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN101251048A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102852653B (en) * | 2012-09-18 | 2016-02-03 | 浙江亿日气动科技有限公司 | The reeded pressure limiting of driving shaft is lost heart auxiliary braking control valve unit |
| CN102852652B (en) * | 2012-09-18 | 2016-02-03 | 浙江亿日气动科技有限公司 | The pressure limiting of air vent screw plug is had to lose heart auxiliary braking control valve unit |
| CN103790670B (en) * | 2014-01-24 | 2017-02-01 | 浙江亿日气动科技有限公司 | Pressure-limiting air relief auxiliary brake valve device with end face seal ring |
-
2007
- 2007-07-15 CN CNA200710137250XA patent/CN101251048A/en active Pending
-
2008
- 2008-07-02 CN CNA2008101260496A patent/CN101324207A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN101251048A (en) | 2008-08-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20081217 |