CN203293902U - Vehicle-mounted fuel gas mixing supply device - Google Patents
Vehicle-mounted fuel gas mixing supply device Download PDFInfo
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- CN203293902U CN203293902U CN2013203179616U CN201320317961U CN203293902U CN 203293902 U CN203293902 U CN 203293902U CN 2013203179616 U CN2013203179616 U CN 2013203179616U CN 201320317961 U CN201320317961 U CN 201320317961U CN 203293902 U CN203293902 U CN 203293902U
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- fuel gas
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Abstract
The utility model discloses a vehicle-mounted fuel gas mixing supply device which comprises gas storage bottles of two kinds of gas and a fuel gas mixer (9). The vehicle-mounted fuel gas mixing supply device is characterized in that the gas storage bottles of the two kinds of gas are respectively connected with the fuel gas mixer (9) through flow control devices, the fuel gas mixer (9) is connected with a cushion gas bottle (11) through a decompressor (10), the cushion gas bottle (11) is connected with an air and fuel gas mixer (16) through a gas supply control unit (14), and the air and fuel gas mixer (16) injects gas into an engine through a fuel gas nozzle (17). According to the vehicle-mounted fuel gas mixing supply device, the two kinds of fuel gas are separated to be stored at ordinary times, the two kinds of fuel gas are mixed in the using process, and the fact that the layering phenomenon happens after long time storage so that the components of injected fuel gas can be unstable is avoided.
Description
Technical field
The utility model relates to the air mixture gas supply system on a kind of gas combustion automobile.
Background technology
Hydrogen alkane (HCNG) is by H
2By certain ratio, mix in compression natural gas (CNG) alternative motor fuels that obtains after two kinds of gaseous fuels mix.Through test, show that in HCNG, hydrogen content is 20%---in the time of 30%, the dynamic property of HCNG automobile, emission performance, economy are optimum, and this composite fuel has excellent combustion characteristic, and hydrogen alkane not only has H
2Flammability limit is wide, and burning rapidly, is a kind of advantage of recyclable fuel, and contains high (and the H of CNG volume calorific value
2Contrast), storage is very extensive, and than features such as anti-emission carburetors, masses generally believe that hydrogen alkane is good alternative motor fuels.
(1) H
2Have very low ignition energy, in CNG, add H
2After, can avoid installing high-energy ignition system.
(2) with regard to burning velecity, H
2Be 8 times of CNG, in CNG, mix H
2After, the burning velecity of mixture gas has improved.Meanwhile, igniting, more near piston top dead center, can make to compress negative work and reduce, and burning degree of constant volume and thermal efficiency of cycle will raise.
(3) H
2Volume energy density very low, a certain proportion of H of admixture in CNG
2, its volume calorific value can increase.When air/fuel ratio, in the situation that rarer, mix H
2After, the mixed volume calorific value of fuel and air increases to some extent.
(4) H
2Aerial flammable mixing boundary is wide, and the lean burn limit is 0.068 (air/fuel ratio relatively), and quenching distance is little, just accounts for 30% of CNG.Add a small amount of H
2The flammable blending ratio of rear HCNG mixture gas is amplified, and realizes lean burn, thereby the engine load regulative mode becomes the matter with higher thermal efficiency, regulates.
(5) in CNG, add H
2After, the H/C in HCNG improves than along with the increase of hydrogen ratio, and inhibit function has been played in the discharging of the carbon based pollutants that this produces after to mixture combustion in engine cylinder.
(6) in the situation that combustion empty equivalence ratio and spark advance angle are fixing, in HCNG along with the increase of mixing the hydrogen ratio, CH
20, CH
4With total hydrocarbon quantity discharged, reduce.
Oven gas is the side production of coking industry, and its main component is hydrogen (55%-60%) and methane (23%-27%).1 ton of coke of common every production can produce 430Nm
3The oven gas of left and right.China's coke output was 4.28 hundred million tons in 2011, with the direct oven gas that enters atmosphere that burns of the mode of " point day lamp ", surpassed 220 billion cubic meters, had caused the significant wastage of environmental pollution and resource.Using oven gas as vehicle fuel, can effectively solve the problem of combustion gas waste and environmental pollution.
Because the required expense of Quantity production hydrogen is higher, the price of natural fuels is relatively cheap, and in oven gas, hydrogen accounts for 55%---60%, the oven gas that useful expense is low replaces the hydrogen that the expense of producing is high, natural fuels is mixed by a certain percentage with oven gas, show that mixing the hydrogen ratio is 20%---30% HCNG fuel.But after the air mixture long term storage, there will be lamination, cause the ratio of the air mixture of exporting unstable.
Summary of the invention
The technical problems to be solved in the utility model: for after the air mixture long term storage, there will be the problem of lamination, provide a kind of vehicle-mounted air mixture gas feeder, at ordinary times two kinds of combustion gas separately stored, when needs use again by combustion gas mixing.
Technical solutions of the utility model:
A kind of vehicle-mounted gas mixed gas supply device, the gaholder and the fuel gas mixer that comprise two kinds of gases, the gaholder of two kinds of gases connects fuel gas mixer by volume control device respectively, fuel gas mixer connects the buffering gas cylinder by pressure purger, the buffering gas cylinder connects the air fuel gas mixer through the air feed control unit, and the air fuel gas mixer sprays into driving engine by gas nozzle by gas
Gaholder is divided into compression oven gas gas cylinder and compressed natural gas cylinder, compression oven gas gas cylinder is connected fuel gas mixer through block valve, baroceptor with the coke oven gas stream amount control device, and compressed natural gas cylinder is connected fuel gas mixer through block valve, baroceptor with the natural gas flow amount control device.
The buffering gas cylinder divides two-way that gas is sent into to the air feed control unit through solenoid electric valve A and solenoid electric valve B.
On the pipeline of solenoid electric valve B, divide branch road is arranged, this branch road connects the air fuel gas mixer by solenoid electric valve C.
The utility model beneficial effect:
This gas supply system separately stores two kinds of combustion gas at ordinary times, during use again by combustion gas mixing, avoided after the long term storage because occurring that lamination makes the gas component that sprays unstable, adopt two kinds of fuel air feed simultaneously, in gas supply system, carry out combined voltage regulation, the natural fuels and the oven gas that mix are transported in driving engine, can effectively improve dynamic property, economy and the emission behavior of automobile.
The accompanying drawing explanation
Fig. 1 is the utility model structural representation.
The specific embodiment
as figure, compression oven gas gas cylinder 1 and compressed natural gas cylinder 5 carry out air feed to driving engine simultaneously, two kinds of gases enter fuel gas mixer 9 along high pressure line, on high pressure line, block valve 2, 6 safety effects, when baroceptor 3, during 7 pressure anomaly, close block valve 2, 6, coke oven gas stream amount control device 4, flow control is carried out in combustion gas in 8 pairs of high pressure lines of natural gas flow amount control device, making to enter into fuel gas mixer 9 hydrogen accounts between the 20%-30% of combustion gas cumulative volume, combustion gas enters pressure purger 10 after fuel gas mixer 9 fully mixes, after pressure purger, air mixture is low-pressure fuel gas, pressure purger 10 is that the unsettled high pressure gas of prime are reduced pressure with the effect of buffering gas cylinder 11, and provide the constant voltage combustion gas to rear class, to guarantee the stability of air-flow, from out gas cushion gas bottle 11, divide two-way to enter air feed control unit 14 through solenoid electric valve A12 and solenoid electric valve B13, enter again in air fuel gas mixer 16, finally by gas nozzle 17, sprayed in automotive engine.Air feed control unit 14 Main Functions are and Das Gaspedal interlock, the size of synchro control gas flow; When the driving engine stable operation, allow gas keep constant voltage, when accelerating, open simultaneously solenoid electric valve A, B, increase gas flow and then increase engine torque.On the pipeline of solenoid electric valve B13, divide branch road is arranged, through solenoid electric valve C15, directly be sent in air fuel gas mixer 16, play the effect of stablizing idling.
Claims (4)
1. vehicle-mounted gas mixed gas supply device, the gaholder and the fuel gas mixer (9) that comprise two kinds of gases, it is characterized in that: the gaholder of two kinds of gases connects fuel gas mixer (9) by volume control device respectively, fuel gas mixer (9) connects buffering gas cylinder (11) by pressure purger (10), buffering gas cylinder (11) connects air fuel gas mixer (16) through air feed control unit (14), and air fuel gas mixer (16) sprays into driving engine by gas nozzle (17) by gas.
2. vehicle-mounted gas mixed gas supply device according to claim 1, it is characterized in that: gaholder is divided into compression oven gas gas cylinder (1) and compressed natural gas cylinder (5), compression oven gas gas cylinder (1) is connected fuel gas mixer (9) through block valve (2), baroceptor (3) with coke oven gas stream amount control device (4), and compressed natural gas cylinder (5) is connected fuel gas mixer (9) through block valve (6), baroceptor (7) with natural gas flow amount control device (8).
3. vehicle-mounted gas mixed gas supply device according to claim 1, is characterized in that: buffering gas cylinder (11) process solenoid electric valve A (12) and solenoid electric valve B(13) divide a two-way that gas is sent into to air feed control unit (14).
4. vehicle-mounted gas mixed gas supply device according to claim 3 is characterized in that: on pipeline solenoid electric valve B(13), minute branch road is arranged, this branch road is by solenoid electric valve C(15) connect air fuel gas mixer (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203179616U CN203293902U (en) | 2013-06-04 | 2013-06-04 | Vehicle-mounted fuel gas mixing supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203179616U CN203293902U (en) | 2013-06-04 | 2013-06-04 | Vehicle-mounted fuel gas mixing supply device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203293902U true CN203293902U (en) | 2013-11-20 |
Family
ID=49569936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203179616U Expired - Fee Related CN203293902U (en) | 2013-06-04 | 2013-06-04 | Vehicle-mounted fuel gas mixing supply device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203293902U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277213A (en) * | 2013-06-04 | 2013-09-04 | 贵州大学 | Automotive mixed-gas supply system |
| CN104888634A (en) * | 2015-05-19 | 2015-09-09 | 贵州大学 | A mixing device for vehicle-use coke-oven gas and natural gas |
-
2013
- 2013-06-04 CN CN2013203179616U patent/CN203293902U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277213A (en) * | 2013-06-04 | 2013-09-04 | 贵州大学 | Automotive mixed-gas supply system |
| CN104888634A (en) * | 2015-05-19 | 2015-09-09 | 贵州大学 | A mixing device for vehicle-use coke-oven gas and natural gas |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131120 Termination date: 20160604 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |