CN104228752B - A kind of gas combustion generator for safe automobile air bag - Google Patents
A kind of gas combustion generator for safe automobile air bag Download PDFInfo
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- CN104228752B CN104228752B CN201410451008.XA CN201410451008A CN104228752B CN 104228752 B CN104228752 B CN 104228752B CN 201410451008 A CN201410451008 A CN 201410451008A CN 104228752 B CN104228752 B CN 104228752B
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Abstract
The present invention relates to a kind of hybrid gas combustion generator for safe automobile air bag.Micro-combustion technology is applied to the gas combustion generator of air bag by the present invention, jointly acts on original solid fuel ignition generator, improves air bag igniting, the reliability of gas charging system.This device includes air bag explosive device and micro-combustion system；When automobile has an accident, corresponding ignition system can be triggered have an effect according to severe degree, control inside air bag and produce the speed of gas, thus preferably protect driver and crew, the injury rate of farthest reduction accident.
Description
Technical field
The present invention relates to a kind of gas combustion generator for safe automobile air bag, be specifically related to one and introduce micro-combustion
The gas combustion generator for safe automobile air bag of burning technology.
Background technology
Micro-scale gas flow is that premixed gas carries out combustion reaction in the confined space and sends the vigorous reaction of light and heat, generally
Occur in the volume of the cubic centimetre order of magnitude.The Epstein of the mid-90 in last century MIT teaches what early start was correlated with
Research, is successfully realized the premixing of hydrogen and oxygen under minute yardstick and stably burns.In recent years, along with the development of micro-system and micro-
The progress of process technology, micro-scale gas flow technology obtains and develops rapidly.Micro-burner based on micro-scale gas flow technology has and accounts for
Little with space, the response time is controlled, can apply to the automobile safety air bag gas generator having rigors to the response time.Peace
Full air bag is typically by sensor (sensor), ECU (EUC), gas generator (inflator), air bag (bag), afterflow
Devices (clockspring) etc. form.When automobile has an accident, sensor experiences car crass intensity, and the letter that will experience
Number being sent to controller, controller receives the signal of sensor and processes, when it is judged that be necessary to open air bag, immediately
Sending ignition signal to trigger gas generator, after gas generator receives ignition signal, rapid fire well produces a large amount of gas
Body is to airbag aeration.According to calculating, regular air bag must start by microprocessor in 0.01 second after there is car crass
Work, in 0.03 second, igniter starts, 0.05 second inner high voltage gas entrance air bag, air bag outward expansion in 0.08 second, and 0.11
Second in air bag swell completely, this moment after, motorist just can knock air bag.At present, use single-stage ignition system, gas more
That take in combustion generator is solid fuel sodium nitride (NaN3).This there are disadvantages that in the application:
(1) NaN3Touch moisture can lose activity, it so can be hindered when accident occurs to light a fire, do not reach due
Effect；And certain harmful substance can be produced after fuel reaction.
(2) it is higher than gaseous fuel, so in lighter accident field to after solid fuel is ignited the severe degree of airbag aeration
Closing, driver and crew can be caused certain injury by the impulsive force of airbag inflation.
(3) occasion of major accident occurring, single-stage gas generator system tends not to meet the due safety of air bag
The requirement of reliability.
The most on the basis of existing technology, micro-scale gas flow technology is applied to gasifier system, will have as follows
Improve:
(1) the gaseous fuel shelf-life is longer, is difficult to lose efficacy；And harmful substance after some gas fuel combustion, will not be produced.
(2) introduce micro-combustion technology, use double-stage air combustion generator system.Can select according to the severe degree of accident
Select different gas occurring modes.So, when there is lighter vehicle accident, gas fuel combustion, gas is full of air bag meeting
Reduce the impulsive force to driver and crew, prevent the outer injury that causes the accident.
(3) when accident is more serious, two-stage system acts on simultaneously, complements each other so that igniting, gas generating rate and
Gas is full of this series of time of air bag process further to be shortened and is more suitable for serious accident occasion.
Summary of the invention
In order to overcome the defect of prior art, solve solid fuel and easily lost efficacy, the problems such as the extent of reaction is violent, it is effectively improved
The security reliability of automobile air-bag system (SRS), it is an object of the invention to provide a kind of for safe automobile air bag
Gas combustion generator, introduces micro-combustion technology in gas generator, gives full play to micro-combustion work in little spatial dimension
With, it is achieved that gas fuel combustion application in SRS system.
Described device includes air bag explosive device (a level system) and micro-combustion system (b level system), piston 5, gas cylinder
Bottle 6, can seal the bottle cap 7 of gas cylinder, air bag explosive device and micro-combustion system between bottle body bottom and piston 5,
Piston 5 is connected with described bottle cap 7 by connecting rod, has noble gas N in described gas cylinder bottle 62。
Described air bag explosive device includes: igniter, the sensor 17 being connected with igniter, solid fuel aerogenesis
Room 3, metal filter screen 4.
Wherein, igniter is positioned at the side of solid fuel aerogenesis room 3, and the first ignitron 2 and solid of igniter
Fuel aerogenesis room 3 is connected, and the opposite side in solid fuel aerogenesis room 3 is provided with metal filter screen 4.
Described micro-combustion system includes: is mixed with the premix bottle 9 of burning gases and oxygen in advance, can light gas in premix bottle 9
The igniter of body, sensor device 14, gas pre-mixed bottle cap 8, gas pre-mixed bottle cap 8 is arranged on the bottleneck of premix bottle 9,
Igniter is connected with sensor device 14.
Burning gases are methane, and methane controls as CH with the volume ratio of oxygen4/O2=1.46。
Micro-combustion system also includes: oxygen pressure gas cylinder 11, and oxygen pressure gas cylinder 11 is provided with valve 12, oxygen pressure gas
Bottle 11 was connected with premix bottle 9 by communicating pipe 10；Valve 12 is connected with sensor device 14.
Igniter includes ignition module and ignitron；Wherein ignition module is fixing with ignitron is connected.
The igniter of micro-combustion system is positioned at the side of premix bottle 9, and the second point fire tube 13 of igniter and premix
Bottle 9 is connected.
Methane selected by gaseous fuel in burner, and oxidant selects oxygen.Foundation is that methane is the most more stable,
It is more active with the combustion reaction of oxygen, and the product burnt completely only has carbon dioxide and water, will not be to environment.
In order to shorten the response time, in advance by pre-to a certain proportion of methane and oxygen mixed, when automobile has an accident, ignition system is ignited
Premixed gas, instantaneous generation CO2Gas is filled with in air bag, enables pre-mixed gas mixing ratio to light.Premix bottle (combustor)
Using the steel cylinder sealed, when the temperature and pressure of the indoor gas that burns raises suddenly, steel cylinder bottle cap will pop.In pure oxygen,
The explosion limit of methane is 5% ~ 60%, and the volume ratio of namely for methane and oxygen is CH4/O2=0.057~1.451.Therefore, premixed gas
Volume ratio control as CH4/O2=1.46, methane excess.Rule of thumb, the volume of air bag is 50 ~ 90L.In the design, gas
Capsule volume takes 56L.Single-stage gas generator system (only uses solid fuel), gas pressure about 2.2MPa, temperature in capsule
Under 300K, volume 112L(mark condition), need NaN3140g。
The present invention uses bipolar gas generator system, therefore to consider the gas production of system at different levels simultaneously.Room temperature
Under, in steel cylinder, the pressure of premixed gas should meet stability requirement, by searching data, takes 20MPa.By calculating, premix
In gas, the quality of methane at least 40g, oxygen 48g.Solid fuel NaN3Take 70g.The volume of premix bottle is 202cm3, wall thickness
0.4mm。
The present invention with provide the benefit that:
(1) gaseous fuel overcomes solid fuel and meets the weakness that water lost efficacy, long shelf-life.
(2) use of gaseous fuel can reduce the use of solid fuel, reduces cost (NaN375 yuan/100g of price, first
18 yuan/kg of alkane), and the pollutant that solid fuel ignition produces can be reduced.
(3) add the regulation performance of SRS system, different gas generation sides can be selected according to the harsh conditions of accident
Formula, reduces the impulsive force produced when air bag pops the suddenly injury to driver and crew.
Accompanying drawing explanation
Fig. 1 is the structural representation of gas combustion generator of the present invention；
Fig. 2 is enlarged drawing at A in Fig. 1；
Description of reference numerals is as follows:
1-the first ignition module；2-the first ignitron；3-solid fuel aerogenesis room；4-metal filter screen；5-piston；6-is high
Air bottle bottle；7-gas cylinder bottle cap；The gas pre-mixed bottle cap of 8-；9-premix bottle (combustor)；10-communicating pipe；11-oxygen
Gas cylinder；12-valve；13-second point fire tube；14-sensor device；15-the second ignition module；16-metal heat-conducting plate；
17-sensor.
Detailed description of the invention
Below in conjunction with the accompanying drawings and specific embodiment the present invention is further illustrated, but protection scope of the present invention is also
It is not limited to this.
When vehicle generation emergency, control system can judge firing action according to the harsh conditions of accident, by passing
Sensor 17 controls igniter.Existing air bag explosive device is a level system, when automobile has an accident, and igniter
One ignition module the 1, first ignitron 2 can light solid fuel, produces rapidly gas and be full of gas in solid fuel aerogenesis room 3
Capsule.
When automobile generation minor accident, only b level micro-combustion system start-up.Sensor device 14 controls igniter,
Second ignition module 15 lights rapidly the ignition powder in second point fire tube 13 after receiving fused signal, washes igniting shell open indirect
Igniting and premix methane and the premixed gas of oxygen in bottle 9, meanwhile, sensing equipment 14 controls to open oxygen pressure gas cylinder 11
Valve 12, oxygen carries out vigorous reaction by injecting communicating pipe 10 in premixed gas.The gas of High Temperature High Pressure breaks through gas pre-mixed
Bottle cap 8, pushes a small amount of noble gas N in piston 5, and bottle 6 open2Enter air bag, airbag inflation, protect driver and crew.
It should be noted that that be filled with in premix bottle 9 is methane and the premixed gas of oxygen, the CH of certain volume ratio4/O2=
1.46.Be filled with in oxygen pressure gas cylinder 11 is high pressure oxygen, and is connected with premix bottle 9 by communicating pipe 10, normal condition
Under, valve 12 closes, and oxygen pressure gas cylinder 11 does not circulate with the gas in premix bottle 9.Valve 12 is connected with sensing equipment 14,
Controlled by sensor device 14.When there is major accident, two-stage system will act on simultaneously, i.e. solid fuel is ignited blast product
Raw N2(not elaborating), gas fuel combustion produces CO2Gas, is full of air bag, very first time protection driver and crew.
Described embodiment be the present invention preferred embodiment, but the present invention is not limited to above-mentioned embodiment, not
In the case of deviating from the flesh and blood of the present invention, any conspicuously improved, the replacement that those skilled in the art can make
Or modification belongs to protection scope of the present invention.
Claims (4)
1. the gas combustion generator for safe automobile air bag, it is characterised in that include air bag explosive device and micro-combustion
Burning system, piston (5), gas cylinder bottle (6), the bottle cap (7) of gas cylinder, air bag explosive device and micro-combustion system can be sealed
System is positioned between bottle body bottom and piston (5), and piston (5) is connected with described bottle cap (7) by connecting rod, described gas cylinder bottle
(6) there is noble gas N in2,
Described air bag explosive device includes: igniter, the sensor (17) being connected with igniter, solid fuel aerogenesis room
(3), metal filter screen (4)；Wherein, igniter is positioned at the side of solid fuel aerogenesis room (3), and the first point of igniter
Fire tube (2) is connected with solid fuel aerogenesis room (3), and the opposite side in solid fuel aerogenesis room (3) is provided with metal filter screen (4)；
Described micro-combustion system includes: igniter, is mixed with the premix bottle (9) of burning gases and oxygen in advance, can light premix
The bottle igniter of (9) interior gas, sensor device (14), gas pre-mixed bottle cap (8), gas pre-mixed bottle cap (8) is arranged on
On the bottleneck of premix bottle (9), igniter is connected with sensor device (14).
A kind of gas combustion generator for safe automobile air bag, it is characterised in that micro-combustion
System also includes: oxygen pressure gas cylinder (11), and oxygen pressure gas cylinder (11) is provided with valve (12), and oxygen pressure gas cylinder (11) leads to
Cross and be connected with premix bottle (9) communicating pipe (10)；Valve (12) is connected with sensor device (14).
A kind of gas combustion generator for safe automobile air bag, it is characterised in that described combustion
Burning gas is methane, and methane is CH with the volume ratio of oxygen4/O2=1.46.
A kind of gas combustion generator for safe automobile air bag, it is characterised in that described point
Fire device includes ignition module and ignitron；Wherein ignition module is fixing with ignitron is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410451008.XA CN104228752B (en) | 2014-09-05 | 2014-09-05 | A kind of gas combustion generator for safe automobile air bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410451008.XA CN104228752B (en) | 2014-09-05 | 2014-09-05 | A kind of gas combustion generator for safe automobile air bag |
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| Publication Number | Publication Date |
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| CN104228752A CN104228752A (en) | 2014-12-24 |
| CN104228752B true CN104228752B (en) | 2016-11-30 |
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| CN201410451008.XA Active CN104228752B (en) | 2014-09-05 | 2014-09-05 | A kind of gas combustion generator for safe automobile air bag |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110948973A (en) * | 2019-12-17 | 2020-04-03 | 芜湖乐天气模有限公司 | Multilayer material structure for gas mold |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1223943A (en) * | 1997-12-05 | 1999-07-28 | 奥艾公司 | Dual inflator apparatus including pyrotechnic inflator |
| US5931495A (en) * | 1995-11-30 | 1999-08-03 | Autoliv Asp, Inc. | Ignition system for a fluid-fueled inflator |
| CN101014486A (en) * | 2004-08-13 | 2007-08-08 | 奥托立夫开发公司 | An inflator for an air bag |
| CN101138974A (en) * | 2006-09-07 | 2008-03-12 | 高田株式会社 | Inflator |
| CN201148153Y (en) * | 2007-12-14 | 2008-11-12 | 奇瑞汽车股份有限公司 | Air bag explosive device |
| CN204184308U (en) * | 2014-09-05 | 2015-03-04 | 江苏大学 | A kind of gaseous combustion producer for safe automobile air bag |
-
2014
- 2014-09-05 CN CN201410451008.XA patent/CN104228752B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5931495A (en) * | 1995-11-30 | 1999-08-03 | Autoliv Asp, Inc. | Ignition system for a fluid-fueled inflator |
| CN1223943A (en) * | 1997-12-05 | 1999-07-28 | 奥艾公司 | Dual inflator apparatus including pyrotechnic inflator |
| CN101014486A (en) * | 2004-08-13 | 2007-08-08 | 奥托立夫开发公司 | An inflator for an air bag |
| CN101138974A (en) * | 2006-09-07 | 2008-03-12 | 高田株式会社 | Inflator |
| CN201148153Y (en) * | 2007-12-14 | 2008-11-12 | 奇瑞汽车股份有限公司 | Air bag explosive device |
| CN204184308U (en) * | 2014-09-05 | 2015-03-04 | 江苏大学 | A kind of gaseous combustion producer for safe automobile air bag |
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| Publication number | Publication date |
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| CN104228752A (en) | 2014-12-24 |
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Effective date of registration: 20180116 Address after: No. 1089, Hong Kong Avenue, Zhangjiagang economic and Technological Development Zone, Suzhou, Jiangsu Province Patentee after: Tianhe automobile safety technology (Zhangjiagang) Co., Ltd. Address before: Zhenjiang City, Jiangsu Province, 212013 Jingkou District Road No. 301 Patentee before: Jiangsu University |
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