CN110242442B - Dual-purpose engine of oil gas - Google Patents
Dual-purpose engine of oil gas Download PDFInfo
- Publication number
- CN110242442B CN110242442B CN201810185603.1A CN201810185603A CN110242442B CN 110242442 B CN110242442 B CN 110242442B CN 201810185603 A CN201810185603 A CN 201810185603A CN 110242442 B CN110242442 B CN 110242442B
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- air supply
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- 239000002184 metal Substances 0.000 claims abstract description 36
- 229910052751 metal Inorganic materials 0.000 claims abstract description 36
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 33
- 230000001105 regulatory effect Effects 0.000 claims abstract description 25
- 238000003860 storage Methods 0.000 claims abstract description 14
- 238000002485 combustion reaction Methods 0.000 claims abstract description 9
- 238000009413 insulation Methods 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims description 18
- 238000002309 gasification Methods 0.000 claims description 15
- 238000004891 communication Methods 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 4
- 239000004215 Carbon black (E152) Substances 0.000 claims 4
- 229930195733 hydrocarbon Natural products 0.000 claims 4
- 150000002430 hydrocarbons Chemical class 0.000 claims 4
- 230000005540 biological transmission Effects 0.000 abstract description 30
- 238000009826 distribution Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 102
- 239000003921 oil Substances 0.000 description 54
- 239000002737 fuel gas Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 239000000446 fuel Substances 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000001273 butane Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- NNPPMTNAJDCUHE-UHFFFAOYSA-N isobutane Chemical compound CC(C)C NNPPMTNAJDCUHE-UHFFFAOYSA-N 0.000 description 2
- 239000003949 liquefied natural gas Substances 0.000 description 2
- 239000003915 liquefied petroleum gas Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 2
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 2
- 239000001294 propane Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000001282 iso-butane Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0203—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels characterised by the type of gaseous fuel
- F02M21/0209—Hydrocarbon fuels, e.g. methane or acetylene
- F02M21/0212—Hydrocarbon fuels, e.g. methane or acetylene comprising at least 3 C-Atoms, e.g. liquefied petroleum gas [LPG], propane or butane
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0203—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels characterised by the type of gaseous fuel
- F02M21/0215—Mixtures of gaseous fuels; Natural gas; Biogas; Mine gas; Landfill gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/023—Valves; Pressure or flow regulators in the fuel supply or return system
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/023—Valves; Pressure or flow regulators in the fuel supply or return system
- F02M21/0233—Details of actuators therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/0245—High pressure fuel supply systems; Rails; Pumps; Arrangement of valves
-
- 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
Abstract
The invention discloses an oil-gas dual-purpose engine, which comprises a cylinder body, a cylinder head cover, a heat insulation plate, a carburetor and an air supply assembly, wherein a combustion chamber is arranged in the cylinder body, the cylinder head cover is fixedly arranged on the cylinder body, the heat insulation plate is positioned between the cylinder body and the carburetor, a throat opening is arranged on the carburetor, the air supply assembly comprises an air storage tank, a metal guide pipe, a pressure stabilizing valve, an air pipe I, an air pipe II, an air pipe III and an air inlet regulating valve, and the air supply assembly forms two air transmission paths under the distribution action of the air inlet regulating valve. The gas supply assembly of the oil-gas dual-purpose engine can provide gas transmission paths with two gas supply amounts, one path is used for providing gas in the engine speed state and the other path is used for providing gas in the engine low speed state, so that not only is the mixing ratio of the gas and the air controllable and adjustable, but also smooth switching of the engine between the high speed state and the low speed state is realized, and the working performance of the engine is stable and reliable.
Description
Technical Field
The invention relates to a gas conveying technology of an oil-gas dual-purpose engine taking fuel oil and gas as fuel, in particular to an oil-gas dual-purpose engine with two gas conveying technologies of two gas supply quantities.
Background
Liquefied Petroleum Gas (LPG) and Liquefied Natural Gas (LNG) are used as gas fuels, have remarkable economical efficiency, low pollution, high fuel value and convenience in transportation, and have good market prospect under the whole large environment advocating energy conservation and environmental protection at present. There is increasing social interest in consumer markets that are emerging standardized, type-rich gas source products, such as small, portable and safe-filled liquefied gases (including propane, butane, isobutane, etc.), which are applicable to oil and gas engines.
In general, an oil-gas dual-purpose engine is provided with a gas transmission pipeline corresponding to a gas supply state, wherein the gas transmission pipeline is provided with a pressure stabilizing valve for reducing gas pressure to control flow, and the size of gas inlet to the engine can be controlled through the pressure stabilizing valve. Because the pressure stabilizing valve in the prior art can only form one gas transmission path on the gas supply path, and the gas outlet pressure of the pressure stabilizing valve is limited in a certain range, the only one gas transmission path can only provide gas supply quantity with a very small variation range, so that the engine is very difficult to change between a high-speed state and a low-speed state, and when the engine needs more gas to maintain high-speed operation, the engine is often influenced by the condition that the gas supply quantity is not output. In the actual use process, the engine is stopped when the engine is transited from a low rotating speed state to a high rotating speed state, and the working performance of the engine is unstable. Thus, problems such as carbon deposition due to incomplete combustion and excessive exhaust gas harmful substance content occur in the engine.
In the prior art, a pressure stabilizing valve with one specification is selected from the oil-gas dual-purpose engines with the same model, and the pressure stabilizing valve can only form a gas transmission path on a gas supply path; the working range of the pressure stabilizing valves is limited, the outlet pressure of each pressure stabilizing valve is not the same, and the pressure stabilizing valves have no general characteristics, so that only one gas can be satisfied, for example, the pressure stabilizing valves used by the engine using propane as fuel are different from those used by the engine using butane as fuel, and the main reasons are that the boiling points of the two are different.
In summary, the gas delivery technology of the oil-gas dual-purpose engine in the prior art has the defects of small variation range of the gas supply amount in production and poor universality of parts.
Disclosure of Invention
The invention aims to solve the technical problem of expanding the variation range of the air supply quantity of an air transmission path, thereby providing the oil-gas dual-purpose engine with stable and reliable working performance.
In order to solve the technical problems, the invention adopts the following technical scheme: the dual-purpose engine comprises a cylinder body, a cylinder head cover, a heat insulating plate, a carburetor and an air supply assembly, wherein a combustion chamber is arranged in the cylinder body, the cylinder head cover is fixedly arranged on the cylinder body, the heat insulating plate is positioned between the cylinder body and the carburetor, a throat is arranged on the carburetor, the air supply assembly comprises an air storage tank, a metal guide pipe, a pressure stabilizing valve, an air guide pipe I, an air guide pipe II, an air guide pipe III and an air inlet regulating valve, the air storage tank is connected with one end of the metal guide pipe, the metal guide pipe is provided with a heating gasification part which is bent to be S-shaped, the heating gasification part is connected with the cylinder head cover, an air inlet of the pressure stabilizing valve is connected with the other end of the metal guide pipe, an air outlet of the pressure stabilizing valve is connected with one end of the air guide pipe I, the air inlet regulating valve comprises a body, a first oil needle and a second oil needle, a main air inlet channel, an idle air passage and a main air supply passage are arranged on the body, the main air supply channel is communicated with the main air inlet channel, the idle air channel is communicated with the main air inlet channel, the main air inlet channel is straight, the idle air channel is in a bending state, the main air supply channel is straight, the first oil needle and the second oil needle are fixedly arranged on the main body in a threaded connection mode, one end of the first oil needle extends into the main air supply channel, the other end of the first oil needle is positioned outside the main body, the main air supply channel and the main air inlet channel are controlled by the first oil needle, one end of the second oil needle extends into the idle air channel, the other end of the second oil needle is positioned outside the main body, the idle air channel and the main air inlet channel are controlled by the second oil needle, the other end of the air delivery pipe I is communicated with the main air inlet channel, the main air supply channel is communicated with a throat on a carburetor through the air delivery pipe II, the heat insulating plate is provided with a negative pressure hole, the idle air passage is communicated with the negative pressure hole through the air pipe III, and the negative pressure hole is communicated with the combustion chamber.
First, this embodiment has an intake air control valve. And an auxiliary air supply path is formed between the idle air passage and the main air inlet passage. The connection process between the first oil needle and the body plays a role of a switch, and when one end of the first oil needle is tightly connected with the body, the main air supply path is disconnected; otherwise, the main air supply path is unblocked, and meanwhile, the unblocked degree, namely the communication degree, is adjustable; the connection process between the second oil needle and the body also plays a role of a switch, and when one end of the second oil needle is tightly connected with the body, the auxiliary air supply path is disconnected; on the contrary, the auxiliary air supply path is unblocked, and meanwhile, the unblocked degree, namely the communicating degree, is adjustable. Therefore, after the gas passes through the main gas supply path, the size of the gas outlet at the main gas supply channel can be adjusted; when the gas passes through the auxiliary gas supply path, the size of the gas outlet at the idle gas passage can also be adjusted.
Secondly, the air supply assembly forms two air transmission paths under the distribution action of the air inlet regulating valve. One is a main gas transmission path formed by connecting a gas storage tank to a metal conduit, a metal conduit to a pressure stabilizing valve, a pressure stabilizing valve to a gas transmission pipe I and the gas transmission pipe I with a throat of a carburetor through a main gas supply path of a gas inlet regulating valve; the other is an auxiliary gas transmission path formed by connecting the gas storage tank to the metal guide pipe, the metal guide pipe to the pressure stabilizing valve, the pressure stabilizing valve to the gas transmission pipe I and the gas transmission pipe I with the negative pressure hole of the heat insulation plate through the auxiliary gas supply path of the gas inlet regulating valve.
Because any air supply path of the air inlet regulating valve has the characteristic of adjustable air supply amount, the air supply amount of the main air supply path can be regulated to be different from the air supply amount of the auxiliary air supply path, and the air supply amount of the main air supply path can be larger than the air supply amount of the auxiliary air supply path based on the air supply amount. And because the tail end of the main gas transmission path is positioned at the throat of the carburetor, the mixing ratio of the fuel gas and the air can be regulated by the carburetor, so that the mixing ratio of the fuel gas and the control is stably controlled. The auxiliary gas transmission path can always provide smaller gas supply quantity, and the gas consumption of the engine in a low-rotation-speed state can be maintained by supplying gas through the auxiliary gas transmission path. In the technical scheme, the range of variation of the air supply quantity of the original air transmission path is enlarged by arranging two parallel air transmission paths, so that the working performance of the engine in the running state taking fuel gas as energy is improved, and the stability is enhanced. When the engine runs at a high speed, the gas is mainly obtained through the main gas transmission path, the gas supply amount is controllable, and because the gas supply amount of the auxiliary gas transmission path is small, the influence of the gas provided by the auxiliary gas transmission path on the engine running at the high speed is small, so that the gas supply amount can be controlled and regulated within a certain range when the engine runs at the high speed; through the auxiliary gas delivery path when the engine is operating at low speeds.
Meanwhile, any air supply path of the air inlet regulating valve has the characteristic of adjustable air supply quantity, the influence of the pressure stabilizing valve on the aspect of setting the air supply quantity is weakened, namely, the air inlet regulating valve has a certain pressure reducing and stabilizing function, so that the regulating capacity of the whole air supply assembly is greatly improved, the adaptability is also improved, the air supply assembly can be matched with engine technologies based on different air source types, and the air supply assembly has extremely high remarkable universality.
The metal conduit in the air supply assembly is a copper metal conduit, and the conduit made of the copper metal conduit has better heat transfer performance. Although the heating gasification part is set to realize the main gas heating gasification process, other parts of the metal conduit can also realize the auxiliary gas heating gasification process. In order to strengthen the auxiliary fuel gas heating gasification process, the gas storage tank is positioned on one side of the cylinder body, and the carburetor is positioned on the other side of the cylinder body. The structure is beneficial to the metal conduit to be closer to the cylinder body and the cylinder head cover of the engine so as to obtain more heat to strengthen the main fuel gas heating and gasifying process and the auxiliary fuel gas heating and gasifying process.
The gasification capacity of the heating gasification part can be further increased by increasing the contact surface between the heating gasification part of the metal conduit and the cylinder head cover, and the heating gasification part of the metal conduit is bent to be wavy, namely, a structure formed by connecting a plurality of continuous S-shaped bent structures in series.
In order to facilitate production, the structure of the air inlet regulating valve has the advantages of simplicity and firmness, the main air inlet channel is communicated with the idle air channel and is positioned on one side of the main body, the main air supply channel is positioned on the other side of the main body, and one end of the idle air channel is parallel to the main air inlet channel.
Vibrations generated during operation of the engine can have adverse effects on the components being screwed together, such as loosening of the screwed joint caused by vibrations. In order to inhibit such phenomenon, a first spring is further arranged between the first oil needle and the body, one end of the first spring is connected with the body, the other end of the first spring is connected with the first oil needle, a second spring is further arranged between the second oil needle and the body, one end of the second spring is connected with the body, and the other end of the second spring is connected with the second oil needle. The oil needle is mounted on the body, and the spring increases the damping of the oil needle relative to the body, so that the influence of vibration on the oil needle can be prevented.
The invention adopts the technical scheme that: the gas supply assembly of the oil-gas dual-purpose engine can provide gas transmission paths with two gas supply amounts, one path is used for providing gas in the engine speed state and the other path is used for providing gas in the engine low speed state, so that not only is the mixing ratio of the gas and the air controllable and adjustable, but also smooth switching of the engine between the high speed state and the low speed state is realized, and the working performance of the engine is stable and reliable.
Drawings
The invention is described in further detail below with reference to the drawings and the detailed description.
FIG. 1 is a schematic diagram of an oil and gas engine;
FIG. 2 is a perspective view of an intake air control valve of an oil and gas dual-purpose engine according to the present invention;
FIG. 3 is a diagram I of the internal structure of an intake regulating valve of an oil-gas dual-purpose engine according to the present invention;
FIG. 4 is a diagram II of the internal structure of an air intake regulating valve of an oil-gas dual-purpose engine;
FIG. 5 is a schematic diagram of a metal conduit heating and gasifying part of an oil and gas dual-purpose engine.
Detailed Description
As shown in fig. 1, the oil and gas dual-purpose engine is provided with a cylinder block 10, a cylinder head cover 11, a heat insulating plate 12, a carburetor 13, an air filter 19 and an air supply assembly.
The cylinder block 10 is a main body of an engine, and integrally connects each cylinder and a crankcase, and is a supporting frame to which pistons, a crankshaft, and other parts and accessories are attached. The cylinder block 10 has a combustion chamber inside, an intake passage on one side, and an exhaust passage on the other side, both of which can communicate with the combustion chamber. A cylinder head cover 11 is fixedly installed at an upper portion of the cylinder block 10. The heat insulating plate 12 is used for preventing excessive heat of the cylinder block 10 at high temperature from being transferred to the carburetor 13 during operation, thereby achieving the purpose of insulating high temperature. A gas transmission channel is arranged in the middle of the heat insulating plate 12, and the gas transmission channel is communicated with a gas inlet channel of the cylinder body 10 after the heat insulating plate 12 is fixedly arranged on the cylinder body 10. The carburetor 13 is fixedly mounted on the partition plate, and thus, the heat insulating plate 12 is located between the cylinder block 10 and the carburetor 13; the carburetor 13 is provided with a throat, an air inlet and a mixed gas outlet, and the carburetor 13 is fixedly connected with the heat insulation plate 12 at the position provided with the mixed gas outlet. The air filter 19 is mounted to the carburetor 13 at a location where an air inlet is provided.
The air supply assembly comprises an air storage tank 14, a metal conduit 15, a pressure stabilizing valve 16, an air pipe I17, an air pipe II, an air pipe III and an air inlet regulating valve 9. The gas tank 14 is used for storing liquefied gas, the gas tank 14 is positioned on one side of the cylinder block 10, and the carburetor 13 is positioned on the other side of the cylinder block 10. The metal conduit 15 is a copper metal conduit 15. The pressure stabilizing valve 16 is fixedly arranged on the cylinder head cover 11 through a mounting bracket, one end of the metal conduit 15 is connected with the air storage tank 14, and the other end of the metal conduit 15 is connected with an air inlet of the pressure stabilizing valve 16, so that the inside of the air storage tank 14 is communicated with the inside of the pressure stabilizing valve 16 through the metal conduit 15. The metal conduit 15 is attached to the outside of the cylinder block 10 and the cylinder head cover 11 and is next to the cylinder block 10 and the cylinder head cover 11; as shown in fig. 5, the metal conduit 15 is provided with a continuous heating and gasifying part 18 which is bent alternately in opposite directions in a wavy manner, and the adjacent bending parts on the heating and gasifying part 18 are in an S shape, that is, the heating and gasifying part 18 is formed by connecting a plurality of continuous S-shaped bending structures in series. The heated gasification portion 18 of the metal pipe 15 is fixed to the cylinder head cover 11.
As shown in fig. 2, the intake air regulating valve 9 includes a body 1, a first oil needle 2, and a second oil needle 3, and the first oil needle 2 and the second oil needle 3 are mounted on the body 1 by screw connection. The body 1 is externally provided with a mounting hole for facilitating the installation. As shown in fig. 3 and 4, a channel structure is provided inside the body 1, and the channels include a main intake channel 4, an idle air channel 5, and a main air supply channel 6. The main intake duct 4 is straight, the idle air duct 5 is bent, the main air supply duct 6 is straight, and the main body 1 is formed in a tubular structure outside around a partial portion of the main intake duct 4, the idle air duct 5, and the main air supply duct 6. The main air inlet channel 4 is communicated with the idle air channel 5 and is positioned on one side of the body 1, the main air supply channel 6 is positioned on the other side of the body 1, and one end of the idle air channel 5 is parallel to the main air inlet channel 4. The main air supply passage 6 is communicated with the main air inlet passage 4 to form a main air supply path, and the idle air passage 5 is communicated with the main air inlet passage 4 to form an auxiliary air supply path. As shown in fig. 4, a first spring 7 is further arranged between the first oil needle 2 and the body 1, one end of the first spring 7 is connected with the body 1, and the other end of the first spring 7 is connected with the first oil needle 2; a second spring 8 is arranged between the second oil needle 3 and the body 1, one end of the second spring 8 is connected with the body 1, and the other end of the second spring 8 is connected with the second oil needle 3. After installation, one end of the first oil needle 2 extends into the main air supply passage 6, the other end of the first oil needle 2 is positioned outside the body 1, one end of the second oil needle 3 extends into the idle air passage 5, and the other end of the second oil needle 3 is positioned outside the body 1. The first oil needle 2 stretches into the main air supply path, the second oil needle 3 stretches into the auxiliary air supply path, the connection degree of the first oil needle 2 and the body 1 can be adjusted by twisting the first oil needle 2, the first oil needle 2 can further stretch into the main air supply path 6, the communication degree between the main air supply path 6 and the main air inlet path 4 is reduced, namely the main air supply path is not smooth, the effect of reducing the air supply amount can be obtained, and conversely, the air supply amount is increased; similarly, the connection degree of the second oil needle 3 and the body 1 can be adjusted by twisting the second oil needle 3, and the second oil needle 3 can further extend into the idle air passage 5, so that the communication degree between the idle air passage 5 and the main air inlet passage 4 is reduced, namely, the auxiliary air supply path becomes not smooth, thereby the effect of reducing the air supply amount can be obtained, otherwise, the air supply amount is increased. Thereby, the main air supply passage 6 and the main air intake passage 4 are communicated with each other through the first oil needle 2, and the idle air passage 5 and the main air intake passage 4 are communicated with each other through the second oil needle 3.
The air delivery pipe I17 is a rubber pipe, the air outlet of the pressure stabilizing valve 16 is connected with the main air inlet channel 4 of the air inlet regulating valve 9 through the air delivery pipe I17, and the inside of the pressure stabilizing valve 16 is communicated with the main air inlet channel 4 through the air delivery pipe I17 after connection. The gas pipe II and the gas pipe III are copper metal pipes. The main air supply passage 6 is communicated with a throat on the carburetor 13 through a gas pipe II. The heat insulating plate 12 is provided with a negative pressure hole which is communicated with the air inlet channel of the cylinder body 10, so that the negative pressure hole can be communicated with the combustion chamber; the idle air passage 5 is communicated with the negative pressure hole through an air pipe III.
The air supply assembly forms two air transmission paths under the distribution action of the air inlet regulating valve 9. One is a main air conveying path formed by connecting a main air supply path from an air storage tank 14 to a metal guide pipe 15, a metal guide pipe 15 to a pressure stabilizing valve 16, a pressure stabilizing valve 16 to an air conveying pipe I17 and the air conveying pipe I17 with a throat opening of a carburetor 13 through an air inlet regulating valve 9; the other is an auxiliary air conveying path formed by connecting an air storage tank 14 to a metal guide pipe 15, the metal guide pipe 15 to a pressure stabilizing valve 16, the pressure stabilizing valve 16 to an air conveying pipe I17 and the air conveying pipe I17 with a negative pressure hole of the heat insulation plate 12 through an auxiliary air supply path of the air inlet regulating valve 9.
In use, the first and second oil needles 2 and 3 are adjusted so that the degree of communication of the main air supply path is greater than that of the auxiliary air supply path, thereby setting the air supply amount of the main air supply path 6 to be greater than that of the idle air path 5. The idle air passage 5 is small in air supply amount and the main air passage 6 is large in air supply amount so that the main air passage is larger in air supply amount than the auxiliary air passage. The gas supplied from the auxiliary gas supply path can be used for maintaining the running state when the engine is in a low-rotation speed state; the fuel gas provided by the main gas delivery path can be used to maintain an operating state when the engine is in a high speed state.
The air supply amount of the main air transmission path can be adjusted by twisting the first oil needle 2, and the air supply amount of the auxiliary air transmission path can be adjusted by twisting the second oil needle 3. When the oil-gas dual-purpose engine technology with two gas transmission paths is used for coping with different types of gas sources, the gas sources with different gasification characteristics can be used by screwing the first oil needle 2 and the second oil needle 3, and the oil-gas dual-purpose engine technology can be widely used and has enhanced universality by fine adjustment.
Claims (5)
1. The utility model provides an oil gas dual-purpose engine, this oil gas dual-purpose engine includes cylinder block (10), cylinder head cover (11), heat insulating board (12), carburetor (13) and air feed subassembly, be equipped with the combustion chamber in cylinder block (10), cylinder head cover (11) fixed mounting is on cylinder block (10), heat insulating board (12) are located between cylinder block (10) and carburetor (13), be equipped with the laryngeal on carburetor (13), its characterized in that: the air supply assembly comprises an air storage tank (14), a metal guide pipe (15), a pressure stabilizing valve (16), an air conveying pipe I (17), an air conveying pipe II, an air conveying pipe III and an air inlet regulating valve (9), wherein the air storage tank (14) is connected with one end of the metal guide pipe (15), the metal guide pipe (15) is provided with a heating gasification part (18) which is bent to be S-shaped, the heating gasification part (18) is connected with a cylinder head cover (11), an air inlet of the pressure stabilizing valve (16) is connected with the other end of the metal guide pipe (15), an air outlet of the pressure stabilizing valve (16) is connected with one end of the air conveying pipe I (17), the air inlet regulating valve (9) comprises a body (1), a first oil needle (2) and a second oil needle (3), a main air inlet channel (4), an idle air channel (5) and a main air supply channel (6) are arranged on the body (1), the main air supply channel (6) is communicated with the main air inlet channel (4), the idle air channel (5) is communicated with the main air inlet channel (4), the main air channel (4) is straight, the main air channel (4) is in a bending state, the air inlet (5) is bent to be in a screw thread state, the first oil needle (3) is fixedly connected with the second oil needle (1), one end of a first oil needle (2) stretches into the main air supply channel (6), the other end of the first oil needle (2) is located outside the main air supply channel (1), the degree of communication is controlled through the first oil needle (2) between the main air supply channel (6) and the main air inlet channel (4), one end of a second oil needle (3) stretches into the idle air channel (5) and the other end of the second oil needle (3) is located outside the main air supply channel (1), the degree of communication is controlled through the second oil needle (3) between the idle air channel (5) and the main air inlet channel (4), the other end of the air supply channel I (17) is communicated with the main air inlet channel (4), the main air supply channel (6) is communicated with a throat on a carburetor (13) through an air supply pipe II, a negative pressure hole is formed in the heat insulation board (12), the idle air channel (5) is communicated with the negative pressure hole through an air supply pipe III, and the negative pressure hole is communicated with a combustion chamber.
2. The dual-purpose hydrocarbon engine of claim 1, wherein: the air storage tank (14) is positioned on one side of the cylinder body (10), and the carburetor (13) is positioned on the other side of the cylinder body (10).
3. The dual-purpose hydrocarbon engine of claim 1, wherein: the heating gasification part (18) of the metal conduit (15) is bent to be wavy.
4. The dual-purpose hydrocarbon engine of claim 1, wherein: the main air inlet channel (4) is communicated with the idle air channel (5) and is located on one side of the main body (1), the main air supply channel (6) is located on the other side of the main body (1), and one end of the idle air channel (5) is parallel to the main air inlet channel (4).
5. The dual-purpose hydrocarbon engine of claim 1, wherein: still be equipped with first spring (7) between first oil needle (2) and body (1), first spring (7) one end is connected with body (1), first spring (7) other end is connected with first oil needle (2), still be equipped with second spring (8) between second oil needle (3) and body (1), second spring (8) one end is connected with body (1), second spring (8) other end is connected with second oil needle (3).
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| CN201810185603.1A CN110242442B (en) | 2018-03-07 | 2018-03-07 | Dual-purpose engine of oil gas |
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| CN201810185603.1A CN110242442B (en) | 2018-03-07 | 2018-03-07 | Dual-purpose engine of oil gas |
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| CN110242442B true CN110242442B (en) | 2024-04-02 |
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| CN110242442A (en) | 2019-09-17 |
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