CN2596044Y - Integral type mixer for gaseous and liquid fuels - Google Patents
Integral type mixer for gaseous and liquid fuels Download PDFInfo
- Publication number
- CN2596044Y CN2596044Y CN 02281158 CN02281158U CN2596044Y CN 2596044 Y CN2596044 Y CN 2596044Y CN 02281158 CN02281158 CN 02281158 CN 02281158 U CN02281158 U CN 02281158U CN 2596044 Y CN2596044 Y CN 2596044Y
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- gas
- fuel
- metering
- plunger
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Abstract
The utility model relates to an integral type mixer for gaseous fuel and liquid fuel, which relates to a mixer for gaseous fuel and liquid fuel of an engine fuel supply device. The utility model solves the separated problem of an engine fuel supply device and integrates a liquid fuel supply device and a gaseous fuel supply device into one whole body. The gaseous fuel supply device is composed of a gas metering hole 6 and a gas pipe joint 7; the gas pipe joint 7 is arranged on the side wall of a housing body; the gas metering hole 6 opened on a guide cylindrical wall surface of the housing body on the gas pipe joint, and the guide cylindrical wall surface can be controlled by the movement of a plunger; the liquid fuel supply device is composed of an oil needle 8, a main jetting opening 9, and a main metering opening 10; the oil needle 8 is installed at the end part of a plunger membrane assembly 3 and in the main jetting opening 9 in a float chamber; the oil needle 8 drives the main jetting opening 9 to move in the main jetting opening 9 by a constant speed carburetor through the plunger membrane assembly 3; the outer end of the main jetting opening 9 is provided with the main metering opening 10; an idling metering hole 11 is positioned at one side of the float chamber; an idling nozzle 12 and a transition nozzle 13 are arranged on the side wall of a throttle assembly 2.
Description
Technical field
Gas liquid dual-purpose fuel integrated type mixer relates to engine fuel supply device, particularly relates to the mixer of a kind of gas, liquid dual-purpose fuel.
Technical background
The gaseous propellant engine mixer is that motor uses one of critical component that cleans gas fuel, and Carburetor is one of critical component of petrol engine.Under the condition that current gaseous fuel gas station does not popularize as yet, the dual-purpose fuel car will have bigger market prospects.The form that present gas and liquid flexible fuel engine generally have two mixing arrangements of a gas mixer and a Carburetor to connect is commonplace, yet this structure has increased intake resistance, reduced impact coefficient, the power of motor, Economy are worsened.
At present gaseous propellant engine mainly contains with mixer: 1. venturi-type mixer, structure is the simplest, its shortcoming is only to satisfy some setting performance of operating condition requirement of motor, and automobile and the motorcycle engine big to the working conditions change scope can not reach full performance of operating condition optimization; 2. Wen's tubular type and vacuum upgrading valve or mechanical upgrading valve fabricated structure, this complex structure will just can reach the more excellent control of air fuel ratio through strict coupling between Venturi tube and the upgrading valve; 3. the equal proportion mixer is when air valve and gas valve match, air fuel ratio is controlled to make, but existing this type of mixer product in domestic and international market all is to rely on the assembly parts that is located at the diaphragm in the air passageways, dull and stereotyped air valve and compound molded lines cone gas valve to change the annular pass area of combustion gas and air to the control of air fuel ratio at present, valve body increases air flow resistance, influence engine power performance, Cone valve molded lines complexity is difficult to processing.4. the equal proportion mixer of slit metering gas, the gas metering hole makes gas metering accurate for the slit formula, mates easily with the air passageways area, realizes optimization of air-fuel ratio easily, thereby is convenient to realize the optimization to Economy and emission performance.
The equal proportion mixer of existing slit metering gas and controlled variable seam formula equal proportion mixer deficiency are, what can only control is rectangular opening or trapezoidal mouth, all there is the problem that can't process in mouth for other complicated shape lines, can't realize the optimal control to motor.
Summary of the invention
The objective of the invention is to mix the problems referred to above that device closes existence for solving existing flexible fuel engine, a kind of processing simple and compact for structure, easy is provided, can be used for the mixer of gas liquid flexible fuel engine, be easy to control air fuel ratio when utilizing this mixer to use gaseous fuel, keep the gas and the liquid dual-purpose fuel integrated type mixer of the characteristic of constant speed Carburetor when using liquid fuel.
The object of the present invention is achieved like this, and accompanying drawings is as follows:
Gas and liquid dual-purpose fuel integrated type mixer, by housing 1, air throttle component 2, plunger diaphragm unit 3, vacuum room cover 4, balance spring 5, fuel supplying device, idling system and float 14 are formed, said fuel supplying device is integrated as a whole by liquid fuel and gas-fuel feeder, gas-fuel feeder is made up of gas metering metering-orifice 6 and gas kitchen pipe joint 7, gas kitchen pipe joint 7 is located on the sidewall of housing 1, and gas metering metering-orifice 6 is opened housing upper plug at gas kitchen pipe joint 7 places and moved on the controllable guide cylinder wall, and the liquid fuel supply device is by spindle 8, main injection jet 9 and main amount mouthful 10 compositions, spindle 8 is contained in the end and the interior main injection jet 9 of float chamber of plunger diaphragm unit 3, and spindle 8 is driven by plunger diaphragm unit 3 by the constant speed Carburetor and moves at main injection jet 9, and the outer end of main injection jet 9 is a main jet 10, one side of the main injection jet 9 in idle metering jet 11 float chambers, idle jet 12 and transition spout 13 are located on the sidewall of air throttle component 2.
The gaseous fuel of multistage proportional measuring holes gas of the present invention, liquid dual-purpose fuel integrated type mixer is supplied with part and is adopted the multistage proportional measuring holes mixer, this structure is compared with existing gas fuel mixer, the following problem that solves the slit mixer is processing problems 1.: accurately control air fuel ratio amount seam shape line complexity and be difficult to processing, do not use the Mould Machining difficulty in advanced development; 2. control accuracy problem: adopt simple slit, rectangle or the trapezoidal difficult optimal control that realizes engine air-fuel ratio; 3. homogeneity of product problem: the difficult control of irregular slit machining accuracy, consistency of product is poor, directly influences the stability of product.
The present invention organically is combined in gas fuel mixer on the Carburetor, make two-part mixer of flexible fuel engine become integrated type, liquid fuel and gas-fuel feeder is integrated as a whole, changed two mixing arrangements that gas liquid flexible fuel engine in the past has a mixer and a Carburetor.Reduced intake resistance, improved charging efficiency, improved power character, reduced cost, reduced arrangement space, this point seems and is even more important when particularly using on motorcycle.
The difference of the equal proportion mixer of the present invention and existing controlled variable seam formula equal proportion motorcycle engine mixer and slit metering gas again in, more than two patents all be plunger control slit, controlling method is continuous control; And be the pure gas fuel mixer, the present invention is gas, liquid dual-purpose fuel mixer, and be monolithic construction, gaseous fuel or liquid fuel when using respectively structurally the air inlet for another kind of fuel have no effect, guaranteed all advantages of any single-fuel mixer to greatest extent.Above technological scheme deficiency again in, both can control is rectangular opening or trapezoidal mouthful, for other complicated shape lines mouthful all have the problem that can't process, can't realize optimal control to motor.When multistage proportional measuring holes gas of the present invention, liquid dual-purpose fuel integrated type mixer using gases fuel,, realize continuous as required or interruption control, thereby reach optimal control motor by the different distributions of several apertures; And metering-orifice is to require to get out with drill bit according to coupling on housing, and cost easy to process is low, after product protection, can directly cast out when the cast housing with the method for die casting, more can reduce cost.
Different distributions by several apertures of the present invention realizes continuously or interruption control as required, thereby reaches the optimal control to motor; And metering-orifice is to require to get out with drill bit according to coupling on housing, and cost easy to process is low, after product protection, can directly cast out when the cast housing with the method for die casting, more can reduce cost, and guarantees consistency of product and stability.
The used gas fuel mixer part of the present invention is compared with existing proportion expression gas fuel mixer and is had the following advantages:
1. use circular hole as the gas metering hole, each hole shape is simple, easy processing, machining accuracy and processing conformity guarantee easily, and the stability of product and conformity are guaranteed easily, cuts down finished cost;
2. the gas metering hole can get out by the needs according to the Engine Matching air fuel ratio on the controllable barrel surface of plunger motion at an arbitrary position, has great processing superiority in the trial production of new products stage;
3. multistage gas metering hole processes on the controllable barrel surface of plunger motion, the distribution in hole can be continuous also can being interrupted along plunger axis, so just can realize the gas quantity by metering-orifice is carried out continuously or discontinuity control, reach on request control, this is that the mixer of other form can't be realized;
Therefore 4. multistage gas metering hole distributes in the stroke of plunger, and the stroke of plunger is big, to the control accuracy height of combustion gas;
5. multistage combustion gas metering-orifice relates on mixer case, do not need to increase other metrological service, simple in structure, component are few, cost is low, the resistance that gas handling system is brought is little simultaneously, to improve power, the economic performance of motor favourable with the impact coefficient that improves motor.
Description of drawings
Fig. 1 is a gas liquid dual-purpose fuel integrated type mixer Carburetor part-structure schematic representation;
Fig. 2 is the structural representation in the multistage gas metering of gas liquid dual-purpose fuel integrated type mixer hole;
Fig. 3 is near the enlarged view of the plunger of Fig. 2 (being the structural representation of the controllable housing sidewall circular arc 15 of plunger 3 motions);
Fig. 4 be the A of Fig. 3 to view, be that multistage combustion gas metering-orifice is arranged partial enlarged drawing.
Among the figure: 1 housing, 2 air throttle component, 3 plunger diaphragm units, 4 vacuum room cover, 5 balance springs, 6 gas metering metering-orifices, 7 gas kitchen pipe joints, 8 spindles, 9 main injection jets, 10 main jets, 11 idle metering jets, 12 idle jets, 13 transition spouts, 14 floats, the controllable housing sidewall circular arc of 15 plunger motion.
Embodiment
Illustrated embodiment further specifies particular content of the present invention and working procedure thereof in conjunction with the accompanying drawings.
Get out a plurality of gas metering metering-orifices 6 on the sidewall circular arc of the controllable housing 1 of plunger shown in Figure 33 motions, each metering-orifice is circular hole, good manufacturability, machining accuracy height.Along plunger axis direction distribution 1～3 row, the diameter of each metering-orifice is between 0.2～2mm in plunger stroke for metering-orifice, and number is 5～100.According to different engine characteristics differences, the metering-orifice size, number and the distribution that match are different.The scope of plunger control metering-orifice is the stroke of plunger, and command range is long, the control accuracy height.
(the gas metering bore dia is 0.3mm and 0.8mm combination to utilize mixer of the present invention, being 3 rows on circumference in the 1.2mm width range distributes, is 22mm along plunger axis to distribution distance, design 24 in a small amount of hole at little load, 12 of the big gas metering metering-orifices of big load design), on long bell 125mL liquefied petroleum gas (LPG)/gasoline dual-purpose fuel motorcycle, use, engine power performance is suitable with former petrol engine when making this car use LPG, without electronic control technology, use LPG 15 operating modes dischargings without exhaust aftertreatment technology motorcycle and be better than Europe II limit value; Use that gasoline 15 operating modes dischargings HC and CO discharging is better than Europe II limit value, NOx discharges near Europe II limit value.
Its working procedure is: gas kitchen pipe joint 7 is installed on the housing 1, plunger diaphragm unit 3 upper ends are connected with vacuum room cover 4, the column part of plunger diaphragm unit 3 can slide along cylinder axis in the guide cylinder tube of housing 1, the excircle of plunger diaphragm unit 3 is pressed on the housing 1 by vacuum room cover 4, balance spring 5 is pressed in direction away from vacuum room cover 4 to the plunger of plunger diaphragm unit 3 under free state, when gas stream is crossed the aditus laryngis of plunger and housing 1 formation, the aditus laryngis place produces degree of vacuum, degree of vacuum is acted on the top of diaphragm unit by the vent of leaving on the plunger lower end surface, the below of diaphragm unit communicates with the inlet atmosphere, diaphragm unit moves up under the pressure difference effect, and plunger also upwards slides.Aditus laryngis increases simultaneously by the air ability, the quantity that the combustion gas metering-orifice that gets out on the plunger guide cylinder spills also increases, the gas quantity that supplies to the aditus laryngis place also increases, and has so just realized the purpose by air quantity control gas quantity, thereby reaches the purpose of control air fuel ratio.
Aperture by control closure group 2 changes the mixed gas throughput by mixer, when gas passes through the air duct of housing 1, between plunger end face and tube wall, form aditus laryngis, degree of vacuum increases moves plunger diaphragm group 3 to vacuum room cover 4 directions under differential pressure action, when the elastic force of balance spring 5 and the gas differential pressure equilibrium of forces about diaphragm, the area of aditus laryngis is constant, the gas quantity hole that the cylinder of plunger does not block forms and enters fuel gas hole, the air quantity that different plunger positions passes through is different with gas quantity, and motor can be controlled stable operation under the definite operating mode of air fuel ratio institute at this.
When selecting liquid fuel, the constant speed Carburetor drives spindle 8 by plunger diaphragm unit 3 and moves in main injection jet 9, the thickness of mating the different section of spindle 8 according to plunger position comes different liquid fuels is carried out the air fuel ratio control corresponding, and this part is common constant speed Carburetor.
Claims (2)
1. gas and liquid dual-purpose fuel integrated type mixer, by housing (1), air throttle component (2), plunger diaphragm unit (3), vacuum room cover (4), balance spring (5), fuel supplying device, idling system and float (14) are formed, it is characterized in that said fuel supplying device is integrated as a whole by liquid fuel and gas-fuel feeder, gas-fuel feeder is made up of many and gas metering hole (6) and gas kitchen pipe joint (7), gas kitchen pipe joint (7) is located on the sidewall of housing 1, open on the housing upper plug that gas kitchen pipe joint (7) is located moves controllable guide cylinder wall in many and gas metering hole (6), the liquid fuel supply device is by spindle (8), main injection jet (9) and main amount mouthful (10) are formed, spindle (8) is contained in the end and the interior main injection jet (9) of float chamber of plunger diaphragm unit (3), spindle (8) is driven at main injection jet (9) by plunger diaphragm unit (3) by the constant speed Carburetor and moves, the outer end of main injection jet (9) is main jet (10), one side of the main injection jet (9) in idle metering jet (11) float chamber, idle jet (12) and transition spout (13) are located on the sidewall of air throttle component (2).
2. gas according to claim 1 and liquid dual-purpose fuel integrated type mixer, it is characterized in that metering-orifice can be arranged to 1～3 row, number is 5～100, diameter changes between 0.2mm～4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02281158 CN2596044Y (en) | 2002-11-15 | 2002-11-15 | Integral type mixer for gaseous and liquid fuels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02281158 CN2596044Y (en) | 2002-11-15 | 2002-11-15 | Integral type mixer for gaseous and liquid fuels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2596044Y true CN2596044Y (en) | 2003-12-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02281158 Expired - Fee Related CN2596044Y (en) | 2002-11-15 | 2002-11-15 | Integral type mixer for gaseous and liquid fuels |
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| Country | Link |
|---|---|
| CN (1) | CN2596044Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075273A (en) * | 2013-01-09 | 2013-05-01 | 陈翔 | Oil-gas dual fuel control device with alternate mixing function |
| CN106368853A (en) * | 2016-11-01 | 2017-02-01 | 重庆大江动力设备制造有限公司 | Carburetor and fuel oil and fuel gas switching mechanism thereof |
| CN114215662A (en) * | 2021-12-21 | 2022-03-22 | 隆鑫通用动力股份有限公司 | Engine and carburetor thereof |
-
2002
- 2002-11-15 CN CN 02281158 patent/CN2596044Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075273A (en) * | 2013-01-09 | 2013-05-01 | 陈翔 | Oil-gas dual fuel control device with alternate mixing function |
| CN103075273B (en) * | 2013-01-09 | 2015-03-11 | 陈翔 | Oil-gas dual fuel control device with alternate mixing function |
| CN106368853A (en) * | 2016-11-01 | 2017-02-01 | 重庆大江动力设备制造有限公司 | Carburetor and fuel oil and fuel gas switching mechanism thereof |
| CN106368853B (en) * | 2016-11-01 | 2018-01-30 | 重庆大江动力设备制造有限公司 | Carburetor and its fuel-firing gas-firing switching mechanism |
| CN114215662A (en) * | 2021-12-21 | 2022-03-22 | 隆鑫通用动力股份有限公司 | Engine and carburetor thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |