CN1834423A - Gaseous fuel two-stroke engine (set) with auto speed governing - Google Patents
Gaseous fuel two-stroke engine (set) with auto speed governing Download PDFInfo
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- CN1834423A CN1834423A CNA2005100546806A CN200510054680A CN1834423A CN 1834423 A CN1834423 A CN 1834423A CN A2005100546806 A CNA2005100546806 A CN A2005100546806A CN 200510054680 A CN200510054680 A CN 200510054680A CN 1834423 A CN1834423 A CN 1834423A
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Abstract
The present invention relates to an automatic speed-regulated gas fuel two-stroke engine (unit). It has no need of speed regulator, and can implement automatic speed regulation, can be used in the fields of vehicle, ship and power generation instead of four-stroke engine (unit). It is characterized by that it has no traditional carburetor, only utilizes a variable synchronous valve coupler whose structure and process are simple and unique to simultaneously implement fuel supply and automatic speed regulation.
Description
Affiliated technical field
What the present invention relates to is two stroke engine (group), adopts the gas energy, does not have the speed regulator but can automatic speed regulation, and the power character of diesel engine is arranged.No fuel scavenging crossover loss.Splash lubrication or pump pressure feed lubrication, lubricant oil do not participate in a kind of two stroke engine of burning.Alternative four stroke engine is applied to fields such as automobile, boats and ships, generating.The rotatable gaseous fuel storage of a kind of week, supply scheme are proposed simultaneously.
Background technique
At present, the explosive motor application is all based on four stroke engine, and only the following motor of discharge capacity 100ml is still generally continued to use two stroke engine.Each effective work done that circulates of two stroke engine accounts for total space-time 50%, and is bigger 1 times than the power of four stroke engine (25%) in theory.But because its time of exchanging gas is short, waste gas is got rid of unclean, and actual power is still big by 60% than four stroke engine under equal cylinder capacity.But two stroke engine is in gas exchange process, and inflammable mixture can be discharged with waste gas, the loss part of fuel, and Economy is relatively poor, has lubricant oil to participate in burning again, and environmental pollution is bigger.Although the advantage simple, that cost is low is arranged, has still limited to more powerful development.
Aspect mechanical lubrication: in the two stroke engine lubricant oil be by with the premixing of fuel oil, or plunger pump confesses lubricant oil and immediately mixes with fuel oil, enters crankcase and cylinder lubricating parts with mixed gas.Because of lubricant oil participates in burning, thus require to reduce as far as possible, the basic demand that greasing can only Man Zu Minus mill, other lubricated purpose such as vibration damping, cleaning, anticorrosion, cool off and all can't reach, limited mechanical life.For solving the lubricated and noxious emission problem of two stroke engine, existing patented technology has proposed various schemes, mainly contains three classes.The first kind is the supply and exhaust door mechanism that uses four stroke engine, this makes structure and four-stoke mode identical, has lost simple in structure, the basic advantage that manufacturing technique requirent is low of two-stroke mode, and is both just like this, when in during high-power development, refrigeration technique support in still needing.Second class is that the supply that the mechanism of cylinder piston and so on specially takes charge of mixed gas is set in addition, realizes the independent splash lubrication of crankcase, complex structure.The 3rd class is to take contacting of variety of way blocking-up lubricant oil and fuel, and most typical is the patent of application number 95214194, and it has significantly improved the height of motor.Various schemes have all proposed strict requirement such as high temperature resistant, airtight, durability, heavy load to manufacturing process.Above-mentioned three classes are the Carburetor mode.
The fuel supply mechanism of motor: have the four-stroke in-cylinder direct injection of diesel oil compression-ignited, the suction tude of gasoline is single, the multiple spot direct spray type.Two stroke engine all provides mixed gas by Carburetor, and Manufacturing Technology for Carburetors is eliminated by national industrial policies.
Utilization to gaseous fuel: two stroke engine is zero.At the four-stoke mode motor, particularly the public transport aspect is paid much attention to the low pollution emission that utilizes gaseous fuel at present, adopts gas bavin, gas vapour duel fuel engine technology energetically on existing bus.But the requirement difference of the mixed gas optimum compression ratio of gas, liquid fuel, motor are taken into account two kinds of fuel limit, and the intrinsic combustion characteristic of gaseous fuel is arranged again, and (volume of gaseous fuel own is big, and the air-fuel mixture amount that enters in the cylinder is reduced relatively.Next is lower than liquid fuel with cylinder gaseous fuel calorific value), when adopting the gas energy, output power seriously reduces (30%-50%), has limited the development of this technology.
Engine for combusting rock gas, liquefied petroleum gas (LPG) only are 20% of liquid fuel to the noxious emission of environment, and aboundresources is subjected to the great attention of various countries.Perfect along with China's pipeline of transferring natural gas from the west to the east, the middle power engine of pure gas fuel is applied.Have at present that the gas cylinder of four-stoke mode is outer to be sprayed hybrid and two kinds of cylinder injection types.The former technology maturation, power adjustments is regulated for amount, the optimum compression ratio entire machine design of pure gas fuel (the natural gas engine compression ratio can reach 12, and liquefied petroleum gas (LPG) can reach 10.5) can be dwindled the low caused difference power distance to petrol engine of heat vale of mixture.But still have big gap, improve power and have only the increase discharge capacity, make machine volume excessive.A kind of implementation matter in back is regulated and rare gas firing, and good economy performance has improved power, but is used for gaseous-fuel injector sealing, the dynamic response frequency requirement height of in-cylinder injection, and the control difficulty is complicated, and the complete machine bulking value is big.A kind of mode in back is to the two stroke engine advantageous particularly.No matter whether the liquid petroleum energy supply is abundant, the development and use gas energy is the great direction of global sustainable development, and the engine movable of using gaseous fuel also has the standardization air feed problem of technology and policy.
Summary of the invention
The volume that the present invention will keep the relative four stroke engine of two stroke engine is little, in light weight, structure and production technology is simple, output power is big advantage, overcome energy consumption, pollute big and lubrication problem, be a kind of high-energy source utilization ratio of new working principle, and can in, the two-stroke internal combustion engine (group) of high-power development.Use liquefied petroleum gas (LPG) or natural gas emphatically, the energy situation that reply is severe and to the love of environment.
Basic structure of the present invention: still continue to use the spark plug of traditional two stroke engine, take a breath road, air-vent, piston, cylinder, exhaust port, flute spring valve, crankcase etc.Replace complicated Carburetor with air-strainer.The lubricant oil of the amount of setting in the crankcase.Oil baffle plate is set above bent axle, and its middle part is provided with and the hands-off slotted hole of link motion.Below cylinder and piston, annular oil trap is set in the crankcase, have the oil spilling hole in the suitable high position of the external side brim of groove.Below annular oil trap, steel wool is filled in the oil baffle plate top in the crankcase inner circumference edge triangular ring district.Ventilation has several grades oil to turn and the pectination back oil road in the road, and shelves oil turns the top and depending on thinner wire netting.In cylinder head, establish igniting chamber and import spark plug.Perforate in the middle of the cylinder top, and connection closely places the metered valve air outlet hole of the variable synchronous valve of outer rim.Accurate moving the joining of combustion gas road of amount axle and valve body in the variable synchronous valve, the one end is spline and is supported on connections of moving in turn of splined hole chain on the valve body that this sprocket wheel and the sprocket wheel, the Transmitted chains that are fixed on the bent axle connect, and do the fast rotation of isogonism with bent axle; The other end of amount axle is the amount axis hole of hollow, and the metering-orifice of a wedge shape is radially opened at amount axis hole middle part; The rotation of metering-orifice throughput axle, move axially with valve body on the metered valve air outlet hole approaching, intersection, separation relation take place; Heng compression ignite gas through reducing pressure is through the amount axis hole of combustion gas interface and the axle of access amount contactlessly; Can move vertically by controlling rod when measuring axle with sprocket rotation, return is finished by spring; Spring contacts to eliminate to rotate by thrust-bearing with the amount axle interferes.The transmission chain and sprocket has a narrow and small confined space, and this top, space leads to annular oil trap through back oil road, and bottom oil baffle plate height is following to be communicated with crankcase.Be provided with main airway and solar term road in parallel between the flute spring valve on air-strainer and the crankcase, solar term insert closure in the road.
The present embodiment working principle sees also schematic representation 1,2,3,4,5,6.Fig. 1: 1. bent axle, 2. oil baffle plate, 3. the pectination back oil road, 4. wire netting, 5. ventilation road (hole), 6. piston, 7. cylinder chamber, 8. spark plug, 9. the variable synchronous valve, 10. cylinder block, 11. cooling liquids, 12. igniting chambers, 13. exhaust ports, 14. lubrication holes, 15. swash and spatter oil, 16. air-strainer, 17. main airways, 18. closures, 19. solar term roads, 20. flute spring valves, 21. oil baffle plate slotted holes, 22. annular oil traps, 23. steel wools, 24. crankcases, 25. lubricant oil.Fig. 5: 26. back oil roads, 27. Transmitted chainss, 28. sprocket wheels.Fig. 4: 29. controlling rods, 30. amount axles, 31. amount axis holes, 32, combustion gas road, 33. combustion gas interface, 34. metered valve air outlet holes, 35. metering-orifices, 36. splined hole sprocket wheels, 37. valve bodies.
Introduce the relation (seeing Fig. 4, Fig. 6) of 35 of metered valve air outlet hole 34 on the valve body 37 of variable synchronous valve 9 and the metering-orifices on the amount axle 30 earlier: when controlling rod 29 does not stress, metering-orifice 35 is at the left of metered valve air outlet hole 34, dash area (Fig. 6-1) the area maximum that this moment, metering-orifice 35 was covered by valve body 37, the intersection via area minimum (idling operation) in two holes.When stressed and promotion amount axle 30 moved to right when controlling rod 29, the dash area that metering-orifice 35 is covered by valve body 37 (Fig. 6-2,3) area diminished gradually, and the intersection throughhole portions area in two holes changes to maximum gradually.When combustion gas has been linked into amount axis hole 31 from combustion gas interface 33, just can go out from the intersection through hole in two holes, this is the axial motion of amount axle 30 just.When equivalent axle 30 rotates, metering-orifice 35 will with metered valve air outlet hole 34 take place approaching, intersect, leave this circulation.Equivalent axle 30 Yi Heng speed is rotated, and does not do axial motion, and can constant temperature, the supplied with constant voltage combustion gas, the gas quantity Shi Heng that comes out when then two holes intersect at every turn is fixed; Change the shape in two holes, thereby change the pace of change that two holes are approaching, intersect, overlap when leaving area, also can change this unit time period combustion gas output quantity and variable quantity.
Introduce whole working now: when Fig. 1 state, the air of pressurized passes steel wool 23 in the crankcase 24, ventilation road (hole) 5 enters cylinder chamber 7 rapidly, run into piston head when just entering, the changed course of part air rushes at the top of cylinder chamber 7, drive waste gas and discharge from exhaust port 13, the process that whole row sweeps waste gas does not have combustion gas to participate in.Evoked the lubricant oil 25 that rushes at the top flows back to crankcase 1 behind oil baffle plate 2 resistance shelves bottom by bent axle 1.Spatter to be carried by Transmitted chains 27 to the lubricant oil 25 of sprocket wheel 28 and be used for lubricated variable synchronous valve 9 (Fig. 5), unnecessary lubricating oil flows into annular oil trap 22 by back oil road 26.The profit oil that is evoked by the skirt section of piston 6 spatters outer periphery to cylinder 6 because of bottom, skirt section wedge-shaped structure relation, form to swash to spatter oil 15 and fly to lubrication hole 14, this moment piston ring just at lubrication hole 14 places, obtained lubricated.When the lubricating oil oil level of oil trap 22 surpassed the oil spilling hole, lubricating oil overflowed and flows back to the bottom along crankcase inwall or special-purpose oil duct.The air that enters ventilation road 5 may carry to be evoked from oil baffle plate slotted hole 21 by crankshaft and piston and fly out, with lose the less amount of lubrication oil that falls from annular oil trap 22 inner edges, air at first will pass steel wool (similar kitchen cleaning ball) 23 could arrive the ventilation road, the volume of steel wool and area are more much bigger than the ventilation road, air flow velocity in steel wool is slow, be clipped in airborne lubricated oil droplet, drop under the effect of gravity and molecule combination force and stayed on the steel wool, flow back at the bottom of the case at last.After air arrives the ventilation road, because of diminishing relatively, the space make air rush at first and second wire nettings 4 fast, as there being less amount of lubrication oil under the capillarity of wire netting (woven wire cloth that multilayer or individual layer are thinner), to be captured in the air, flow back to crankcase bottom by pectination back oil road 3.
Bent axle continues to turn clockwise and drives piston and move up, close ventilation (hole) 5, road and exhaust port 13 in succession, bent axle 1 drives sprocket wheel 28, Transmitted chains 27 simultaneously, splined hole sprocket wheel 36 final amounts of rotation axles 30 by variable synchronous valve 9, just open variable synchronous valve 9 synchronously, beginning is strafed to cylinder chamber 7 and is sprayed into the combustion gas (see figure 2).Crankcase intracavity is because of moving on the piston at this moment, and it is big that volume becomes, and air pressure is less than outer atmosphere, flute spring valve 20 is opened, and along with bent axle further clockwise rotates, fresh air is by air-strainer 16, main airway 17 and solar term road 19 constantly enter crankcase 24, up to inside and outside air pressure balance.Amount axle 30 also clockwise rotates with bent axle simultaneously, metering-orifice 35 and metered valve air outlet hole 34 overlapping intersections, and promptly variable synchronous valve 9 is opened always, combustion gas is strafed from right to left spray into cylinder chamber 7, and have the part combustion gas to be taken in igniting chamber 12.Mixed gas is compressed in cylinder, if its maximum pressure surpasses the maximum pressure of combustion gas, mixed gas can occur and flow backwards from gas outlet, be unallowed, should be in cylinder pressure close variable synchronous valve 9 before more than or equal to combustion gas pressure prerequisite.When near the piston arrives top dead center, light a fire in the igniter chamber 12 at first denseer mixed gas and then cause in the cylinder that detonation promotes piston and moves downward of spark plug 8 enters Fig. 3 operating mode.Piston has been finished whole work cycle by the outside transferring power work done of bent axle.
Fuel of the present invention is to enter cylinder after having closed the inlet and outlet hole, adopt air waste discharge scavenging, the waste of having stopped fuel leaks, and adds lubricant oil and does not participate in burning, more adopt the gaseous fuel of low emission, need not any emission purification measure just can reach emission limit.Strafe gaseous fuel when cylinder begins to compress in cylinder, the mixing of this gas is more satisfactory, and Ke Bu Let puts traditional spray head, and turbulent flow spray nozzle simple and that need not to control can be set in case of necessity, divides and releases the gas flow of strafing.Igniting chamber 12 to its disturbance difficulty, uses for igniting forming denseer relatively mixed gas in compression process because of relatively independent.What igniting chamber possessed has supported rare gas firing than nonuniformity stratified mixtures in rich mixture and the cylinder chamber, is the energy-conservation condition of having created.The selection of pure gas fuel can be accomplished maximum to compression ratio, makes the more powerful of motor.Realize the back separation of the trace intersection of lubricant oil, air, the lubricant oil of having eliminated traditional two stroke engine participates in the drawback that burning causes discharging to exceed standard, and has also reduced the consumption of lubricant oil.
Parts the lubricated of mode (or pump lubrication mode) that independently soak into, splash greatly prolonged mechanical life.The setting of what is more important lubrication hole 14 and annular oil trap 22, cylinder, piston skirt and piston ring obtain soaking into that the gum deposit on the piston ring obtains dissolveing and washing away of machine oil in the Zai Mei Ma circulation, have eliminated the two stroke engine piston ring because of the glued easily intrinsic drawback that lost efficacy of reasons in structure.The complete machine lubricating quality has surpassed four stroke engine, particularly to the cooling of piston.
The variable synchronous valve keeps rotating with the synchronous isogonism speed of bent axle by Transmitted chains, when load moment increases the weight of, speed of crankshaft is slack-off, synchronous amount axle 30 rotating speeds are also slack-off, the time lengthening that metering-orifice 35 and metered valve air outlet hole 34 intersect, strafing the gas quantity that enters cylinder increases, and mixed gas thickens, output power increases, and rotating speed improves; It is then opposite when load moment alleviates.As seen the variable synchronous valve reaches the purpose that the dynamic matter of motor is regulated along with fuel feed has automatically been adjusted in the variation of load, has finished the speed regulator function automatically, has satisfied applications such as car, ship, generating to the engine power performance requirement.
At present the gas spray head of gaseous propellant engine all adopts awl to go into the formula valve, requires not gum deposit of fuel, and olefin(e) centent is low, and self heat-resisting quantity, cone valve fast opening and closing frequency response character are poor, and complete machine is accurate because of the supply and exhaust door of numerous complicated also makes sealing be stranded.This variable synchronous valve has adopted rotary gate valve structure, and is lubricated and control is highly reliable, lubricatedly is responsible for airtightly, high temperature resistant simultaneously, do not have frequent response difficult problem, servo simple;
The load of amount axle 30 is minimum, only for amount axle own wt, easily variable This coupling spare of synchronous valve is done very reliablyMicro-gum deposit between amount axle and valve body participates in because of lubricant oil is arranged, and obtains dilution under the effect of constantly friction, and the gum deposit of the coincidence bore portion of metering-orifice and metered valve air outlet hole is constantly poured cylinder chamber burning back by pressure gas and discharges, and makes the unlikely accumulation of gum deposit glued.So can be regardless of the compositions such as alkene of leaving away, directly utilize the liquefied petroleum gas (LPG) or the pipe natural gas of present family expenses except that in the gaseous fuel.Reduced the fuel cost of operation.
If the air that enters motor is not added restriction, the air that enters will be quantitative, and mixture strength can be low excessively when idling and little load condition.After adding solar term road 19 and closure 18, when idling and little load, closed throttle is when flute spring valve is opened, air can only slowly enter crankcase by the narrow and small throat of main airway 17, does not wait crankcase to advance full air, motor detonation work done, piston moves down, and flute spring valve is closed, and air inlet finishes.This shows as lack of air and enters in next work cycle, thereby has increased the concentration of mixed gas in the cylinder, and the complete machine performance improves.During little load condition, take closure 18 and controlling rod 29 interlock methods suitably to add rich mixture, reach the overall balance of performance.The comprehensive state that idling and the little load condition amount of being in are regulated and matter is regulated.When motor near and when surpassing economical operation speed, WOT no longer with the controlling rod interlock, motor enters complete matter and regulates operating mode.
Present embodiment also can not be provided with solar term road and closure owing to possess the igniting chamber structure, cancellation main airway throat, and motor still can stable operation in idling and little load condition (lean combustion).Suitably improve idling,, also conform to the working characteristics of variable synchronous valve the burning advantageous particularly of engine acceleration, idling, little load condition.Cancellation solar term road, closure and raising idling can increase fuel consumption.
Be subjected to the influence of the intrinsic combustion characteristic of gaseous fuel, output power ratio of the present invention is little with the discharge capacity two-stroke gasoline engine, but much larger than four-stroke gaseous propellant engine, and can reach and surpass four-stroke vapour, diesel engine.Adopt the gas engine of two-stroke mode, remedied the little maximum deficiency of existing gaseous propellant engine output power at aspect of performance.In addition, introduce the variable synchronous valve of original creation, cancelled the Carburetor of backward complexity, complete machine is more simpler than existing two stroke engine, and other increases newly is stamping part, makes things convenient for industrialized production, for the application in each field has stepped solid step forward.
The explanation of others:
When adopting rock gas, its decompression process will absorb heat, adopts liquefied petroleum gas (LPG) to answer heating and gasifying.Used heat energy is all supplied with by the heat energy that cooling liquid 11 is carried, can only be by electric heating during starting.
At the medium and small mechanical field of supporting gaseous propellant engine, it is feasible carrying out transforming in week of storage tank, and as the automobile of fuel consumption per hundred kilometers below reaching about 10 liters, this needs to change the notion that traditional automobile all has fixing fuel reserve tank.Directly utilize the high olefin liquefied petroleum gas (LPG) of present family expenses and standardized gas holder to be inverted and use, be one of technical purpose of pursuing of the present invention, and utilize ready-made abundant logistics resource.The turnover storage tank of vehicular gaseous propellant also must solve the measurement problem of gaseous fuel.Extensively use ripe electronic scale technology, the combustion gas storage tank of standard is inverted on the covert electronic scale, amount is the most feasible by weight.This can make gaseous fuel be applied immediately in field of internal combustion engine.Exploitation and popularization natural gas storage tank need the support in powerful fund, technology and market.Combustion gas car, ship are widely applied, and when the water comes, a channel is formed for the meeting of popularization rock gas.
Adopt method of the present invention, in the development, the gaseous fuel two-stroke engine group of high-power automatic speed regulation is a derivation technology.Should reduce vibration when motor is used in mechanical field, cluster engine such as complete machines such as automobile motions, noise need to require to do " V-arrangement " arrangement, bent axle can install anti-skidding belt to the interlock of variable synchronous valve and realize Synchronous Transmission outside crankcase, each cylinder supply in parallel combustion gas.Its annular oil trap of while is with regard to not store oil or make oil level very low, and then uses oil pump instead to oil injecting lubricatings such as lubrication hole, piston, variable synchronous valve.When each cylinder was in upright arrangement, each variable synchronous valve can be coaxial.
Can seal in mechanisms's (using traditional diesel engine structure) such as fuel pump and driving at the combustion gas interface end of variable synchronous valve of the present invention, device nozzle outside the metered valve air outlet hole, make the pressure fuel oil be the vaporific cylinder chamber that enters by nozzle, the variable synchronous valve has been taken on the dual functions of outlet valve and speed regulator here, increase Sealing simultaneously to the amount shaft sealing, so just can adopt liquid fuels such as diesel oil, gasoline, also will take to break makeup and put the processing discharging.
The present invention is intended to a kind of succinct motor, if can be by the situation of speed probe perception speed of crankshaft and lambda sensor perception exhaust, utilization can obtain better exhaust index and maximum acceleration and full operating mode maximizes power to the instantaneous conditions range of the controlling rod of electronic servos such as single-chip microcomputer programming best effort function control fuel-supplying pressure, variable synchronous valve.
Claims (9)
1. the gaseous fuel two-stroke engine of an automatic speed regulation (group), inside top at cylinder has an igniting chamber, and importing spark plug, perforate in the middle of cylinder head, one and Transmitted chains are arranged outside the hole, sprocket wheel, the variable synchronous valve that bent axle connects is trembled to the combustion of cylinder supply gas, air passes through air-strainer, main airway, the solar term road, closure, flute spring valve, crankcase, steel wool, ventilation road (hole), the wire netting supply cylinder, lubricant oil in the crankcase passes through bent axle, oil baffle plate, Transmitted chains, back oil road, the annular oil trap, piston, lubrication hole, steel wool, wire netting, the acting in conjunction circulating lubrication complete machine of pectination back oil road, it is characterized in that: pass through bent axle, the synchronous isogonism speed transmission of variable synchronous valve realizes fuel supply and automatic speed regulation, a large amount of circuit lubricant oil are by oil baffle plate in the body, annular oil trap resistance shelves and collection, by steel wool, the ventilation road, wire netting has been finished the separation of air after the trace of the process neutral lubrication oil of process crankcase intersects, the igniting chamber of setting, solar term road and closure have been supported rare gas firing.
2. the gaseous fuel two-stroke engine of automatic speed regulation according to claim 1 (group), it is characterized in that: the amount of having axle in the valve body of variable synchronous valve, one end of amount axle is spline and is supported on the connection of moving in turn of a splined hole chain on the valve body, have one at the controlling rod control fuel feed of measuring on the axis, the other end of amount axle is the amount axis hole of hollow, the metering-orifice of a wedge shape is radially opened at amount axis hole middle part, the rotation of metering-orifice throughput axle, move axially with valve body on the metered valve air outlet hole take place approaching, intersect, the time of combustion gas output and the variable quantity of output quantity are controlled in separation, the amount axle contactlessly inserts the combustion gas interface end, and the amount axle is by seal oil.
3. the shape of the metering-orifice of addressing according to claim 2, metered valve air outlet hole, it is characterized in that: the shape that changes two holes, thereby change the pace of change that two holes are approaching, intersect, overlap when leaving area, also can change this unit time period combustion gas output quantity and variable quantity.
4. want the gaseous fuel two-stroke engine (group) of art 1 described automatic speed regulation according to right, it is characterized in that: wire netting is thinner woven wire cloth, wire netting is attached on the pectination back oil road of ventilation road inwall, and the lubricant oil that is adsorbed flows into crankcase by the pectination back oil road.
5. want the gaseous fuel two-stroke engine (group) of art 1 described automatic speed regulation according to right, it is characterized in that: the steel wool device below the annular oil trap, above the oil baffle plate, crankcase inner circumference edge triangular ring district.
6. want the gaseous fuel two-stroke engine (group) of art 1 described automatic speed regulation according to right, it is characterized in that: the skirt section root edge of piston has wedge-shaped structure, the lubrication hole of the lubricant oil that is evoked by piston wedge shape skirt section in the annular oil trap by cylinder skirt lubricates, dissolves and washes away the gum deposit on the piston ring periodically, makes motor adapt to high olefin fuel.
7. the gaseous fuel two-stroke engine of automatic speed regulation (group) also can not be provided with solar term road and closure owing to possessed the igniting chamber structure, and cancellation main airway throat still can stable operation.
8. the combustion gas interface end in variable synchronous valve of the present invention seals in fuel pump and driving mechanism, device nozzle outside the metered valve air outlet hole, make the pressure fuel oil be the vaporific cylinder chamber that enters by nozzle, the variable synchronous valve has been taken on the dual functions of outlet valve and speed regulator here, increase Sealing simultaneously to the amount shaft sealing, so just can adopt liquid fuels such as diesel oil, gasoline.
9. in the development, the gaseous fuel two-stroke engine group of high-power automatic speed regulation is a derivation technology.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNA2005100546806A CN1834423A (en) | 2005-03-14 | 2005-03-14 | Gaseous fuel two-stroke engine (set) with auto speed governing |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2005100546806A CN1834423A (en) | 2005-03-14 | 2005-03-14 | Gaseous fuel two-stroke engine (set) with auto speed governing |
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| CN1834423A true CN1834423A (en) | 2006-09-20 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373240A (en) * | 2014-10-29 | 2015-02-25 | 力帆实业(集团)股份有限公司 | Lubrication structure for skirt section of inner piston of engine cylinder block |
| CN105019981A (en) * | 2015-07-27 | 2015-11-04 | 上海坤孚企业(集团)有限公司 | Lubricating oil separating device of two-stroke gasoline engine |
| CN105863821A (en) * | 2015-02-06 | 2016-08-17 | 温特图尔汽柴油公司 | Internal combustion engine, method for operating the internal combustion engine, and cylinder, cylinder liner and closing plate for the internal combustion engine |
-
2005
- 2005-03-14 CN CNA2005100546806A patent/CN1834423A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373240A (en) * | 2014-10-29 | 2015-02-25 | 力帆实业(集团)股份有限公司 | Lubrication structure for skirt section of inner piston of engine cylinder block |
| CN105863821A (en) * | 2015-02-06 | 2016-08-17 | 温特图尔汽柴油公司 | Internal combustion engine, method for operating the internal combustion engine, and cylinder, cylinder liner and closing plate for the internal combustion engine |
| CN105019981A (en) * | 2015-07-27 | 2015-11-04 | 上海坤孚企业(集团)有限公司 | Lubricating oil separating device of two-stroke gasoline engine |
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