CN200989242Y - Gasoline and liquefied petroleum gas double-fuel engine - Google Patents
Gasoline and liquefied petroleum gas double-fuel engine Download PDFInfo
- Publication number
- CN200989242Y CN200989242Y CNU2006201071096U CN200620107109U CN200989242Y CN 200989242 Y CN200989242 Y CN 200989242Y CN U2006201071096 U CNU2006201071096 U CN U2006201071096U CN 200620107109 U CN200620107109 U CN 200620107109U CN 200989242 Y CN200989242 Y CN 200989242Y
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- China
- Prior art keywords
- oil
- lpg
- gas
- gasoline
- solenoid valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
- F02D19/0639—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed characterised by the type of fuels
- F02D19/0642—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed characterised by the type of fuels at least one fuel being gaseous, the other fuels being gaseous or liquid at standard conditions
- F02D19/0647—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed characterised by the type of fuels at least one fuel being gaseous, the other fuels being gaseous or liquid at standard conditions the gaseous fuel being liquefied petroleum gas [LPG], liquefied natural gas [LNG], compressed natural gas [CNG] or dimethyl ether [DME]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
The utility model discloses a double-fuel engine of petroleum and liquefied petroleum gas, comprising a petroleum oil line, a LPG gas circuit and a transfer switch of gas and oil; the petroleum circuit comprises an oil tank, an oil pump, an oil inlet electromagnetic valve, a carburetor, an oil drain electromagnetic valve which are connected in turn by pipelines; the carburetor is connected with the mixer; the LPG gas circuit comprises a gas cylinder, a LPG electromagnetic valve and a reduction device and a power-adjusting valve which are connected by pipelines in turn; the power-adjusting valve is connected with the mixer; the transfer switch for oil and gas comprises an oil level shift, a gas shift, a retarder which controls delayed opening for the electromagnetic valve for oil inlet or a LPG electromagnetic valve when transferred between the oil level and the gas level shift. The utility model enables the function of double using of gas and oil through the transfer switch, direct switch without speeding up during transferring process for oil and gas, which has the advantages of convenient transferring, smooth transition and no stuttering.
Description
Technical field
The utility model is a kind of gasoline, LPG Dual Fuel Engine.
Background technique
Along with automobile pollution increases, vehicle exhaust more becomes seriously to pollution of atmosphere, and the Abgasgesetz increasingly stringent that various countries formulate is depended merely on the combustion system of improving internal-combustion engine and has been difficult to satisfy more and more stricter Abgasgesetz.Add the contradiction between oil supply and demand aggravation, the substitute fuel automotive engineering is developed rapidly in recent years.LPG (liquefied petroleum gas (LPG)) fuel is with advantages such as its good and economic, low pollution emission and easy accumulatings and become the good substitute fuel of automobile.Formed huge LPG automobile market both at home and abroad, in recent years since, China's automobile production amount and vehicle population significantly increase, and these vehicles concentrate on big and medium-sized cities relatively, vehicle exhaust causes severe contamination to urban air, automobile exhaust pollution as cities such as Beijing, Shanghai, Guangzhou has become primary atmospheric pollution sources, and adopting the LPG liquefied petroleum gas (LPG) is alternative motor fuels, is the shortcut that improves motor vehicle exhaust emission.
In recent years, world petroleum price constantly goes up, and the yield energy of domestic underground petroleum resource descends year by year, real estate resources is petered out, the backroom boys discovers that natural gas and liquefied petroleum gas (LPG) can replace oil plant to drive internal-combustion engine, along with modern Vehicular internal combustion engine technology constantly improves, liquefied petroleum gas (LPG) is compared Economy with used gasoline and obviously is better than gasoline, and burning back exhaust emissions is better than burns gasoline.Along with the pay attention to day by day of people to efforts at environmental protection, to an urgent demand of Economy, liquefied petroleum gas (LPG) (LPG) is the research and extension work of the vehicular engine and the non-road machine exhaust emissions of fuel, and is more urgent and important in China.
Liquefied petroleum gas (LPG) is one of available mineral fuel that clean most.Compare with coal and mineral oil, the harmful matter that the combustion fluid liquefied oil gas produces reduces significantly, and stops the discharging of sulfur dioxide and the generation of city acid rain substantially.Liquefied petroleum gas (LPG) has fine Economy.Liquefied petroleum gas (LPG) has more higher calorific value than other mineral.Liquefied petroleum gas (LPG) also has safety and characteristics easily, does not produce toxic gases such as carbon monoxide during burning, can not be detrimental to health.Available canned or storage or the interpolation at the scene of liquefied petroleum gas (LPG) (LPG).In addition, needn't handle solid waste or ashes behind the liquefied petroleum gas combustion.
The throw over switch of the duel fuel engine of existing domestic production or repacking has the oil level shelves, three gears of gas position shelves and room shelves, when gasoline being converted to liquefied petroleum gas (LPG) (LPG), must earlier throw over switch be placed in the room shelves (promptly neither air feed also the gear of fuel feeding not) of the centre of throw over switch, hold the gasoline treat in the carburetor bowl will after-flame the time by operator, throw over switch being replaced " LPG " gear puts again, if in oil/gas shift process, do not control the time well, motor will occur and send out pendulum, beat and cough up, power descends, if vehicle vehicle operating will occur in operation and sent out and dash this moment, even flame-out phenomenon (to go back unburned intact because of the oil of carburettor float in indoor, this moment, liquefied petroleum gas (LPG) entered in the cylinder, two kinds of fuel mixed combustions in cylinder, this time period causes the mixed gas overrich, engine operation is undesired).Otherwise when liquefied petroleum gas (LPG) was converted to gasoline, switch process and method were the same.In addition, the poor combustion phenomenon of motor appearance is also identical with gasoline conversion liquefied petroleum gas (LPG).
The model utility content
The technical assignment of the technical problems to be solved in the utility model and proposition be overcome that prior art exists in oil/gas shift process, be prone to motor send out pendulum, beat cough up, power descends in addition vehicle operating send out towards and the defective of stopping working, a kind of gasoline, LPG Dual Fuel Engine are provided.For this reason, the utility model is taked following technological scheme:
A kind of gasoline, LPG Dual Fuel Engine comprise engine body, mixed flow device, gasoline passage, LPG gas circuit and oil-gas change-over switch, it is characterized in that:
Described gasoline passage comprises fuel tank, oil pump, oil-feed solenoid valve, Carburetor, oil drain solenoid valve, the fuel tank that is linked to each other successively by pipeline, and described Carburetor links to each other with described mixed flow device;
Described LPG gas circuit comprises gas cylinder, LPG solenoid valve, decompressor, the power adjustments valve that is linked to each other successively by pipeline, and described power adjustments valve links to each other with described mixed flow device;
The delayer that described oil-gas change-over switch comprises the gentle position shelves of oil level shelves and control oil-feed solenoid valve or LPG solenoid valve delayed start-up during conversion between oil level shelves and gas position shelves.
In more detail,, make that this scheme is easy to implement and make the product structure that makes rationally reliable, can adopt following concrete technical measures as the further of technique scheme improved and replenish:
Described gasoline, LPG Dual Fuel Engine is characterized in that being connected with return tube between described oil pump and the fuel tank.
Described gasoline, LPG Dual Fuel Engine is characterized in that being connected with circulating pipe between described engine body and the decompressor.
Described gasoline, LPG Dual Fuel Engine is characterized in that described oil-gas change-over switch links to each other with ignition switch.
Described gasoline, LPG Dual Fuel Engine is characterized in that described oil-gas change-over switch links to each other with decompressor.
The utility model is by setting up an oil drain solenoid valve by oil-gas change-over switch control in gasoline passage, and when being converted to gas position shelves, control LPG solenoid valve delayed start-up by delayer from the oil level shelves, can reach thus by throw over switch and reach oil, the dual-purpose effect of gas, in oil, gas shift process, directly conversion need not to quicken, conversion is convenient, transition is slick and sly, does not have to beat and coughs up phenomenon.
Description of drawings
Fig. 1 is a kind of connection diagram of the present utility model.
Embodiment
As shown in Figure 1, this gasoline, LPG Dual Fuel Engine comprise engine body 12, mixed flow device 11, gasoline passage, LPG gas circuit and oil-gas change-over switch 6, wherein:
Gasoline passage comprises the fuel tank 1-oil pump 2-oil-feed solenoid valve 3-Carburetor 4-oil drain solenoid valve 5-fuel tank 1 that is linked to each other successively by pipeline, and described Carburetor 4 links to each other with described mixed flow device 11;
The LPG gas circuit comprises the gas cylinder 7-LPG solenoid valve 8-decompressor 9-power adjustments valve 10 that links to each other successively, and power adjustments valve 10 links to each other with mixed flow device 11;
The delayer that oil-gas change-over switch comprises the gentle position shelves of oil level shelves and control oil-feed solenoid valve 3 or LPG solenoid valve 8 delayed start-ups during conversion between oil level shelves and gas position shelves.
In more detail, be connected with return tube 15 between oil pump 2 and the fuel tank 1; Be connected with circulating pipe 16 between engine body 12 and the decompressor 9; Oil-gas change-over switch 6 links to each other with the ignition switch (not shown) by a control wiring 13, links to each other with the 4th cylinder high voltage wire (not shown) by another control wiring 14; Oil-gas change-over switch 6 links to each other with decompressor 9 by control wiring.
When this gasoline, LPG Dual Fuel Engine work in the oil level shelves of oil-gas change-over switch, 3 unlatchings of oil-feed solenoid valve, oil drain solenoid valve 5 and LPG solenoid valve 8 are closed under the control of oil-gas change-over switch 6, this moment 1 li of fuel tank gasoline by oil pump 2 to oil-feed solenoid valve 3, enter the float chamber of Carburetor 4 again, in mixed flow device 11, enter engine body 12 work by combustion at last with air mixing.
When this gasoline, LPG Dual Fuel Engine work in the gas position shelves of oil-gas change-over switch, oil-feed solenoid valve 3 cuts out under the control of oil-gas change-over switch 6, oil drain solenoid valve 5 is closed, LPG solenoid valve 8 is opened, this moment, high pressure LPG liquid entered decompressor 9 decompressions from gas cylinder 7 through LPG solenoid valve 8, entered engine body 12 work by combustion after power valve 10 enters in the mixed flow device 11 with air mixing.
This gasoline, LPG Dual Fuel Engine is when being converted to gas position shelves from the oil level shelves, under the control of oil-gas change-over switch, oil-feed solenoid valve 3 cuts out and rapid oil-break, make 1 li of fuel tank oil no longer enter the float chamber of Carburetor 4 through oil pump 2, oil drain solenoid valve 5 is opened and rapidly the residual gasoline in the float chamber of Carburetor 4 is sucked back fuel tank 1 simultaneously, LPG solenoid valve 8 is then opened after such as 4 seconds by the delayer control lag of throw over switch, like this, gasoline in Carburetor 4 float chambers flows back to fuel tank rapidly through burning and oil drain solenoid valve, just runs on aforesaid gas position shelves state afterwards.This shows that gasoline to the conversion of liquefied petroleum gas (LPG) (LPG) can be changed smoothly automatically.Otherwise liquefied petroleum gas (LPG) (LPG) is converted to gasoline too, does not need additional other to finish conversion in the transfer process.The same in conversion under the non-idling mode with conversion under the idling mode, the stable conversion of engine speed rounding off in the transfer process, do not have and beat the phenomenon of coughing up, stop working.
In practical operation, for making the more good speed commentaries on classics of this motor, at first pilot engine with gasoline, Deng engine running number minute, after water temperature arrives 30 ℃, throw over switch is pulled out with on the position of LPG, do not need other actions such as open out, motor just is automatically converted to burning LPG, the conversion rounding off.As want motor to quit work, and preferably being converted to the gasoline combustion running several seconds, shutting engine down is piloted engine smoothly for guaranteeing like this next time again.
Claims (5)
1, a kind of gasoline, LPG Dual Fuel Engine comprise engine body (12), mixed flow device (11), gasoline passage, LPG gas circuit and oil-gas change-over switch (6), it is characterized in that:
Described gasoline passage comprises fuel tank (1), oil pump (2), oil-feed solenoid valve (3), Carburetor (4), oil drain solenoid valve (5), the fuel tank (1) that is linked to each other successively by pipeline, and described Carburetor (4) links to each other with described mixed flow device (11);
Described LPG gas circuit comprises gas cylinder (7), LPG solenoid valve (8), decompressor (9), the power adjustments valve (10) that is linked to each other successively by pipeline, described power adjustments valve (10) link to each other with described mixed flow device (11);
The delayer that described oil-gas change-over switch (6) comprises the gentle position shelves of oil level shelves and control oil-feed solenoid valve or LPG solenoid valve delayed start-up during conversion between oil level shelves and gas position shelves.
2, gasoline according to claim 1, LPG Dual Fuel Engine is characterized in that being connected with return tube (15) between described oil pump (2) and the fuel tank (1).
3, gasoline according to claim 1, LPG Dual Fuel Engine is characterized in that being connected with circulating pipe (16) between described engine body (12) and the decompressor (9).
4, gasoline according to claim 1, LPG Dual Fuel Engine is characterized in that described oil-gas change-over switch (6) links to each other with ignition switch.
5, gasoline according to claim 1, LPG Dual Fuel Engine is characterized in that described oil-gas change-over switch (6) links to each other with decompressor (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201071096U CN200989242Y (en) | 2006-08-25 | 2006-08-25 | Gasoline and liquefied petroleum gas double-fuel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201071096U CN200989242Y (en) | 2006-08-25 | 2006-08-25 | Gasoline and liquefied petroleum gas double-fuel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200989242Y true CN200989242Y (en) | 2007-12-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201071096U Expired - Fee Related CN200989242Y (en) | 2006-08-25 | 2006-08-25 | Gasoline and liquefied petroleum gas double-fuel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200989242Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106641699A (en) * | 2015-10-30 | 2017-05-10 | 现代自动车株式会社 | Fuel filling apparatus and method for bi-fuel vehicle |
-
2006
- 2006-08-25 CN CNU2006201071096U patent/CN200989242Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106641699A (en) * | 2015-10-30 | 2017-05-10 | 现代自动车株式会社 | Fuel filling apparatus and method for bi-fuel vehicle |
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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 |