CN2727424Y

CN2727424Y - Fuel gas releaser for engine

Info

Publication number: CN2727424Y
Application number: CN 200420060693
Authority: CN
Inventors: 张开林
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-08-10
Filing date: 2004-08-10
Publication date: 2005-09-21
Anticipated expiration: 2014-08-10

Abstract

The utility model discloses a fuel gas releaser for an engine. The utility model is provided with a fuel gas mixing cavity and a fuel gas temporary storing cavity which can match with the fuel gas mixing cavity, and the fuel gas mixing cavity can be arranged at the front of the air inlet of the mixing gas of the engine. The temporary storing cavity is communicated with a fuel gas a source by the air inlet. The temporary storing cavity and a controlled fuel gas channel are respectively communicated with the mixing cavity through an idling current limiting fuel gas channel. The inlet part of the controlled fuel gas channel is connected with a fuel gas flow adjusting mechanism which can be regulated by a control mechanism. The controlled fuel gas channel at least extends into the fuel gas mixing cavity, and micropores for fuel gas blowing out are distributed on the channel wall arranged in the fuel gas mixing cavity. The sum of the entirety air-out area of the fuel gas is smaller than the sectional area of the channel. The device can improve the combustion completeness degree by leaps and bounds, save the energy, reduce the pollution discharge, and throughly solve the problem of urgent accelerated flameout and the insufficient motive power of the engine fuel gas. The utility model and the fuel carburettor can carry out the parallel installation and the converting use to realize the goal of using the dual fuel, and the range of application of gases clean energy in the engine field is enlarged.

Description

The combustion gas releaser that is used for motor

Technical field

The utility model relates to a kind of combustion gas releaser that is used for motor, can be widely used in using gas only fuel, and/or uses mini engines such as gasoline/combustion gas dual-fuel such as motorcycle, small generator, suction engine, mowing machine.

Background technique

Traditional motor all is to be fuel with the fuel oil that comprises gasoline, diesel oil.Except that global fuel resource consumes the problem of bringing rapidly, cause the air environmental pollution problem that is on the rise also to draw attention day by day by engine exhaust emission.Wherein, to comprise that compressed natural gas (CNG), liquefied petroleum gas (LPG) (LPG) etc. are become fuel oils such as " clean energy resource " gaseous fuel gasoline replacing, diesel oil and are used more and more, equipment that adapts with it and/or component are also in research and extension constantly.For example notification number is that the Chinese patent literature of CN2519857Y has just been reported a kind of gasifying liquefied petroleum gas device that uses for motorcycle.

Can be example with supporting parts such as gasifying liquefied petroleum gas device or the equipment of using of motorcycle at present, though it can guarantee the operation use of motor under normal plateau, but changing running state, its acceleration performance extreme difference particularly, it is obvious to quicken flame-out phenomenon, almost can't finish and anxious quicken or surmount working state such as anxious accelerations, not only influence engine power performance, and be that the use of vehicle or miscellaneous equipment brings great unsafe factor.

The model utility content

At above-mentioned situation, the utility model will provide a kind of combustion gas releaser that can be used for motor that improves structural type, can be satisfied with on the one hand and solve the above problems, and can increase substantially the sufficient combustion degree of combustion gas, reach the purpose of energy saving and minimizing disposal of pollutants, can also realize the parallel and conversion of double fuel easily with the motor of present use gasoline simultaneously, enlarge the application area of gas clean energy resource in engine art.

The utility model is used for the combustion gas releaser of motor, has a combustion gas mixing cavity space structure and the temporary storage chamber body space of the combustion gas structure that cooperates with it that can be located at engine mixed gas body air inlet port the place ahead in the structure.The temporary storage chamber body space of combustion gas structure is communicated with fuel gas source through suction port, and is communicated with combustion gas mixing cavity space structure respectively through an idling current limliting blast tube and controlled blast tube.The import department of controlled blast tube with can engage by the gas flow controlling mechanism of operating mechanism regulation and control, and this controlled blast tube should stretch in the combustion gas mixing cavity space structure at least, and on its conduit wall that is positioned at combustion gas mixing cavity space structure, being distributed with combustion gas ejection micropore, the breathing area sum of each micropore is less than the sectional area of passage on the outlet nozzle of controlled blast tube and the conduit wall.Here said fuel gas source is the gaseousness fuel multiple commonly used that comprises CNG, LPG etc.Though said idling current limliting blast tube need not to get rid of the traditional idling current-limiting mechanism that has current limliting adjusting screw adjustable structures such as (pins) commonly used, but special and what can preferentially adopt is the needleless type restricted flow passage structure that has constant idling current limliting flow as calculated, the latter be traditional fuel engine can't realize.

From fuel gas source and through the combustion gas after the routine decompression/gasification after suction port enters the temporary storage chamber body space of combustion gas structure, under the idling work state, closed the import of controlled blast tube by the gas flow controlling mechanism of operating mechanism regulation and control, combustion gas can only accurately be measured and the idling current limliting blast tube of processing be admitted to combustion gas mixing cavity space structure by this, and enters motor after the air mixing.Under the running working state of non-idling, open and regulate and control the charge flow rate of gas flow controlling mechanism by operating mechanism, make that the combustion gas of the temporary storage chamber body space of combustion gas structure enter combustion gas mixing cavity space structure through controlled blast tube import, and be admitted to engine chamber after air fully mixes by the requirement of being controlled.Because this controlled blast tube in the said structure is inserted in the combustion gas mixing cavity space structure, and on its conduit wall that is positioned at combustion gas mixing cavity space structure, be distributed with combustion gas ejection micropore, and on the outlet nozzle of controlled blast tube and the conduit wall breathing area sum of each micropore less than the sectional area of this passage, therefore have combustion gas supercharging automatically in this controlled blast tube of pressure, and can spray in the combustion gas mixing cavity space structure by each ejection micropore that distributes on its conduit wall, reaching can be rapid with the air that is entered by import, fully mix, thereby the combustion gas that helps improving in the mixed gas can fully be burnt, both improved the utilization ratio of combustion gas, also reduced the discharging of pollutant, reached and only solve at present by near the nozzle ejection of combustion gas mixing cavity space sidewall and be difficult to and the rapid well-mixed problem of air.

This controlled blast tube stretches into and passes on the basis of combustion gas mixing cavity space structure in said structure, can further change at present will this controlled blast tube outlet nozzle be positioned at set-up mode within the combustion gas mixing cavity space structure, and outlet nozzle that will this controlled blast tube is arranged at the outer the place ahead of combustion gas mixing cavity space structure suction port, the combustion gas that makes controlled blast tube is when it is positioned at each ejection micropore on the conduit wall of combustion gas mixing cavity space structure and sprays into combustion gas mixing cavity space structure, part combustion gas in the passage can also mix with the air that will enter in advance mutually, more helps improving the abundant degree of combustion gas and Air mixing.The outlet nozzle structure of said this controlled blast tube also can be arranged to have the form of some outgassing micropores, also can improve the aerial degree of dispersion of combustion gas.

The test result that with the motorcycle engine is example shows, adopt above-mentioned measure after, not only solved traditional gas engine motorcycle satisfactorily and quickened flame-out problem, and can adapt to satisfactorily equally and suddenly quicken or surmount working state such as anxious acceleration.

Further, for improving combustion gas and the abundant and uniformity coefficient that mix of air in combustion gas mixing cavity space structure more, improve the combustion efficiency of combustion gas and the discharging degree of reduction pollutant to greatest extent, can also be provided with the vortex structure of appropriate format at the airintake direction position of said combustion gas mixing cavity space structure.For example, in a specific embodiment, it is an annular board-like simple structure that is provided with air-flow path at least at central part that this vortex structure adopts.Test result shows, increased this vortex structure after, can make combustion gas and Air mixing gas can sharply produce a large amount of eddy current, make it by mixed effect more fully thereby reach, can greatly improve the work by combustion efficient in motor.

Equally the test result of carrying out with motorcycle shows, adopted above-mentioned vortex structure is set after, can make same 150 type motorcycle under the situation that air demand equates, the maximum speed of motor is brought up to 8500-9000 rev/min by 6500 rev/mins.Shown this vortex structure to improve fuel gas buring fully and engine power performance improved the extremely conspicuousness of effect.

On the basis of said structure, the improvement that can make also comprises, further be provided with the flow-limiting plate that the cavity diameter that can adapt with the cavity cross-section shape at its position, place and can this position rotates for axle in said this combustion gas mixing cavity space structure, it is provided with the air-flow path of minimum permission flow.The said operating mechanism that is used to regulate and control the gas flow controlling mechanism is connected with this flow-limiting plate simultaneously and can drives it does said rotation, and generally should be the synchronous rotation that adapts with regulation and control to the gas supply flow size of this controlled blast tube, promptly under two kinds of extreme working state situations---close under the situation of controlled blast tube air feed during as idling work to this, operating mechanism should make this flow-limiting plate turn to the air-flow path of cutting out combustion gas mixing cavity space structure fully, and only the air-flow path by the minimum permission flow on this flow-limiting plate satisfies MIN gas flow; When operating mechanism made this controlled blast tube obtain the working state of maximum gas supply flow, this operating mechanism also should make flow-limiting plate turn to the location status that the air-flow path that makes combustion gas mixing cavity space structure reaches maximum.This operating mechanism generally can be by handling control by the throttle line (as motorcycle) of motor etc., to realize the synchronization control to dependency structure.

In one embodiment, above-mentioned said this is used to regulate and control the operating mechanism of gas flow controlling mechanism, for can drive simultaneously this gas flow controlling mechanism and with its coaxial rotatingshaft that is connected.In case of necessity, this rotatingshaft also can dispose simultaneously as return structures commonly used such as return springs.

In above-mentioned combustion gas releaser of the present utility model, said gas flow controlling mechanism do not get rid of can adopt currently reported/use as common form structures such as plunger type pressure regulator valves, but because of its material selection narrow limitation big, the requirement on machining accuracy height, difficulty is big, and wearing and tearing easily, the stability of whole vaporizer is reduced, pollutant emission and energy-efficient performance are all undesirable, therefore as a kind of preferred form that can embodiment for reference, can be adopted as under elastic structure cooperates and to compress and to drive the moving plate and the stator formula cooperating structure that can move as planar friction with the opposite planar contact by operating mechanism, the corresponding frictional plane position that can do movingly at moving plate or stator offers at least one air-flow through hole, according to using needs generally to be set to several air-flow through holes, so that how much regulate gas supply flow by quantity to the air-flow through hole that covers or open more.Another sheet moves the adjustment sheet that opens and closes this air-flow through hole for warp.Thereby solved machining accuracy, difficulty is big and gas leakage problem that easily occur because of wearing and tearing, has guaranteed the stability of releaser and engine operation, be easy to be extended and applied.In said structure, when employing offered several said air-flow through holes, the aperture of each air-flow through hole can be for isometrical or waney; The spacing that is provided with between each air-flow through hole can be for equidistantly or not equidistant.

Be safety and reliability and/or the raising using effect that further improves above-mentioned combustion gas releaser, on the basis of said structure, can also be provided with the additional structure of other appropriate format.For example, can in the suction port of the temporary storage chamber body space of said combustion gas structure and the air delivering pipeline between fuel gas source, also be provided with air feed safety guarantee structures such as isopiestic pressure mechanisms such as including the gas constant pressure valve at least and/or security solenoid valve; At least include air feed supplementary structures such as gas filtering structure and/or gas preheating structure or the like.Wherein, the gas isopiestic pressure mechanism can be realized the combustion gas decompression of the compression of fuel gas source or liquefaction and constant output again in required pressure range, both guaranteed that this combustion gas releaser imported an amount of combustion gas to motor, also saved the trouble that user oneself adjusts supply gas pressure, made things convenient for use.Security solenoid valve can cut off source of the gas automatically at gas storage (liquid) bottle (jar) commonly used when accident is toppled over, prevent the leakage of combustion gas (liquid) and the serious accident that may cause.Gas filtering structure helps guaranteeing entering the pure degree of the combustion gas of motor.Test result shows that also the combustion gas after being preheated can be gasified more fully, and it is also more complete to burn.Therefore the gas preheating structure will more help reducing exhaust gas discharging and cut down the consumption of energy.This gas waste-heat structure generally can be installed in outside the waste pipe, utilizes the waste heat of motor that preheating is carried out in combustion gas.

The combustion gas releaser of the motor of said structure form is except that can being used alone, also can be under the prerequisite of installation that does not change present petrol engine first wife Carburetor and usability, install side by side with it, realize that the parallel and conversion of double fuel (oil, gas) is used.Adopt when double fuel is parallel to be used installation to said structure, a kind of mode that can adopt, be that the turnover gas two ends of above-mentioned releaser are sealed with sealing cover respectively, and can be by the fixing above-mentioned releaser of suitable flange arrangement at the connecting end oral area of former Carburetor and motor.Above-mentioned idling current limliting blast tube with stretch into engine inlets after former idle tube is communicated with; Above-mentioned controlled blast tube passes former carburetor air port and stretches into above-mentioned combustion gas mixing cavity space structure and get final product.If also wish to adopt above-mentioned vortex structure, it can be installed in the air inlet end of former Carburetor.

Practice and testing result show, the above-mentioned engine gas releaser of the utility model can be widely used in various motors with gasoline as fuel at present, on small generators such as motorcycle, generator, suction engine, mowing machine, not only can be fully and replace traditional Carburetor satisfactorily and installed and used separately, can also together be installed on the motor side by side with former Carburetor easily, and can arbitrarily change use as required.And its fuel combustion is abundant, has greatly reduced the pollution to environment, can also significantly improve the power performance and the adaptability for working condition energy of generator.

Below in conjunction with by embodiment shown in the drawings as embodiment, foregoing of the present utility model is described in further detail again.But this should be interpreted as that the scope of the above-mentioned theme of the utility model only limits to following example.Do not breaking away under the above-mentioned technological thought situation of the utility model, various replacements or change according to ordinary skill knowledge and customary means are made include in scope of the present utility model.

Description of drawings

Fig. 1 is a kind of schematic configuration diagram that is used for the engine gas releaser of the utility model.

Embodiment

The combustion gas releaser that is used for motor as shown in the figure has a gas mixing chamber 18 and the combustion gas that cooperates with it that can be located at engine mixed gas body air inlet port the place ahead and stores up chamber 8 temporarily in the structure.Combustion gas is stored up chamber 8 temporarily and is communicated with through suction port 7 and fuel gas source gas storage (liquid) bottle 1, also is disposed with gas isopiestic pressure mechanism 3, security solenoid valve 2, pneumatic filter 5 and gas preheating structure 6 on the air delivering pipeline 4 of 7 of fuel gas source gas storage (liquid) bottle 1 and suction ports.This combustion gas is stored up chamber 8 temporarily and is communicated with gas mixing chamber 18 respectively through an idling current limliting blast tube 9 and controlled blast tube 16, and the outlet 21 of gas mixing chamber 18 is connected with the firing chamber of motor.The import of this controlled blast tube 16 with can engage by the gas flow controlling mechanism of control lever shaft 13 regulation and control, dispose return spring 14 on the control lever shaft 13, and be connected with the throttle line of motor, realize adjusting control operation by pulling to control lever shaft 13 to throttle line.This controlled blast tube 16 stretches into and passes gas mixing chamber 18, its outlet nozzle 17 is positioned at the outer the place ahead of gas mixing chamber's 18 suction ports, be distributed with combustion gas ejection micropore on these controlled blast tube 16 tube walls of gas mixing chamber 18 being positioned at, outlet nozzle 17 is also for offering the form of some combustion gas ejection micropores, and the breathing area sum of each micropore can increase after respectively spray the micropore ejection to guarantee the combustion gas that enters this controlled blast tube 16 automatically less than the sectional area of controlled blast tube 16 on its outlet nozzle 17 and the conduit wall.Be provided with the ring vortex plate 19 that central part has air-flow path at the suction port position of this gas mixing chamber 18, and on its planar annular, also offer some air-flow through holes 23 in the spacing mode.

This gas flow controlling mechanism is for the moving plate 11 that can contact compression fit with opposite planar under cooperating at stage clip 15 and can move as planar friction and be fixed in the stator 12 that combustion gas stores up on 8 walls of chamber temporarily and form.Wherein moving plate 11 is connected with control lever shaft 13 and can drives rotation by it, and stage clip 15 is placed on the control lever shaft 13.Can offer some isometrical air-flow through holes with spacing mode place with the position, plane movingly that moving plate 11 is made planar friction on stator 12, how many 11 of moving plates are for to realize the adjustment sheet that the air demand of the controlled blast tube 16 of subtend is regulated by the quantity of the air-flow through hole on the stator 12 being opened/being sealed with the rotation of control lever shaft 13.In addition, this air-flow through hole also can be opened on the moving plate 11 in contrast, and then 11 of stators are the corresponding adjustment sheet that is used to open and close the air-flow through hole that changes into.

Axially also be provided with the flow-limiting plate 20 that the cavity diameter that can adapt to the cavity cross-section shape at its position, place and can this position rotates for axle in the middle part in gas mixing chamber 18, it is provided with the air-flow through hole 22 of minimum permission flow.The control lever shaft 13 that is connected with moving plate 11 in the gas flow controlling mechanism stretches into the position, place of flow-limiting plate 20 in the gas mixing chamber 18 simultaneously, and is attached thereto and drives flow-limiting plate 20 and do to rotate synchronously in the rotatingshaft mode of this flow-limiting plate 20.

Claims

1. the combustion gas releaser that is used for motor, it is characterized in that having in the structure combustion gas mixing cavity space structure (18) and the temporary storage chamber body space of the combustion gas structure (8) that cooperates with it that can be located at engine mixed gas body air inlet port the place ahead, the temporary storage chamber body space of combustion gas structure (8) is communicated with fuel gas source (1) through suction port (7), and be communicated with combustion gas mixing cavity space structure (18) respectively through an idling current limliting blast tube (9) and controlled blast tube (16), the import department of controlled blast tube (16) with can engage by the gas flow controlling mechanism of operating mechanism (13) regulation and control, controlled blast tube (16) stretches in the combustion gas mixing cavity space structure (18) at least, and on its conduit wall that is positioned at combustion gas mixing cavity space structure (18), being distributed with combustion gas ejection micropore, the breathing area sum of each micropore is less than the sectional area of passage on the outlet nozzle of controlled blast tube (16) and the conduit wall.

2. the combustion gas releaser that is used for motor as claimed in claim 1, it is characterized in that said controlled blast tube (16) stretches into and pass combustion gas mixing cavity space structure (18), its outlet nozzle (17) is positioned at the outer the place ahead of combustion gas mixing cavity space structure (18) suction port.

3. the combustion gas releaser that is used for motor as claimed in claim 1, it is characterized in that said gas flow controlling mechanism is under cooperating at elastic structure (15), can compress and drive the moving plate (11) and stator (12) the formula cooperating structure that can move as planar friction with opposite planar contact by operating mechanism (13), the corresponding frictional plane position that can do movingly at moving plate or stator offers at least one air-flow through hole, and another sheet is the adjustment sheet that opens and closes this air-flow through hole through moving.

4. the combustion gas releaser that is used for motor as claimed in claim 3 is characterized in that saidly being used to regulate and control the operating mechanism (13) of gas flow controlling mechanism for can drive the rotatingshaft (13) that said this moving plate (11) sways and disposes return structure (14).

5. the combustion gas releaser that is used for motor as claimed in claim 1 is characterized in that being provided with vortex structure (19) at the airintake direction position of said combustion gas mixing cavity space structure (18).

6. the combustion gas releaser that is used for motor as claimed in claim 5 is characterized in that said vortex structure (19) is for being provided with the annular plank frame of air-flow path at least at central part.

7. the combustion gas releaser that is used for motor as claimed in claim 1, it is characterized in that in said combustion gas mixing cavity space structure (18), being provided with the flow-limiting plate (20) that the cavity diameter that can adapt with the cavity cross-section shape at its position, place and can this position rotates for axle, it is provided with the air-flow path (22) of minimum permission flow, and the said operating mechanism (13) that is used to regulate and control the gas flow controlling mechanism is connected with this flow-limiting plate (20) simultaneously and can drives it does said rotation.

8. as the described combustion gas releaser that is used for motor of one of claim 1 to 7, it is characterized in that in the suction port (7) of the temporary storage chamber body space of said combustion gas structure and the air delivering pipeline (4) between fuel gas source (1), also being provided with air feed safety guarantee structure and air feed supplementary structure.

9. the combustion gas releaser that is used for motor as claimed in claim 8 is characterized in that including at least gas isopiestic pressure mechanism (3) and/or security solenoid valve (2) in said air feed safety guarantee structure.

10. the combustion gas releaser that is used for motor as claimed in claim 8 is characterized in that including at least gas filtering structure (5) and/or gas preheating structure (6) in said air feed supplementary structure.