CN110778423A - Integrated air rail assembly of ignition type multi-fuel in-cylinder direct injection engine - Google Patents
Integrated air rail assembly of ignition type multi-fuel in-cylinder direct injection engine Download PDFInfo
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- CN110778423A CN110778423A CN201911082708.5A CN201911082708A CN110778423A CN 110778423 A CN110778423 A CN 110778423A CN 201911082708 A CN201911082708 A CN 201911082708A CN 110778423 A CN110778423 A CN 110778423A
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- Prior art keywords
- air rail
- rail
- fuel
- air
- engine
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- 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
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- 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
- F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
- F02M31/02—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating
- F02M31/16—Other apparatus for heating fuel
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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)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention relates to the technical field of engines, and particularly discloses an integrated air rail assembly of a spark-ignition multi-fuel in-cylinder direct injection engine, which comprises: the engine comprises an engine main body, a cylinder body, a crankcase, an oil sprayer and an air pump arranged on the crankcase in the engine main body, a radiating fin arranged on the outer wall of the cylinder body, a first air rail penetrating through the radiating fin, a second air rail connected with the first air rail and a quick connection part; according to the invention, through the integrated design between the air rail for conveying the compressed auxiliary air and the radiating fins, the requirement that the fuel is heated in an auxiliary manner is met, and the heat radiation performance of the cylinder body is improved, so that the energy is saved, and the total weight of the engine is reduced; and the air rail is simple and reliable to install through the design of the quick connection part, and the maintenance difficulty and the maintenance cost are reduced.
Description
Technical Field
The invention belongs to the technical field of engines, and particularly relates to an integrated air rail assembly of a spark-ignition multi-fuel in-cylinder direct injection engine.
Background
In the field of engines, particularly in the field of unmanned aerial vehicle engines, a spark ignition type direct injection engine is the most common engine, fuel is directly injected into a cylinder of the engine through an oil injector, and then the fuel is ignited through a spark plug to realize acting on a piston of the engine. However, in the field of aircraft engines, heavy oil is more safe and reliable in transportation and storage processes due to the characteristics of high stability, high flash point, difficult volatilization and the like, and is favored, but depending on advantages and disadvantages, the combustion performance of heavy oil is relatively reduced, and no man needs to carry out aloft work, so that the temperature of the working environment is generally lower, and even if conventional fuel is adopted, the combustibility is greatly reduced compared with that of the heavy oil when the heavy oil is operated on the ground due to the influence of low temperature.
The common method for improving the combustion performance of the fuel generally comprises the steps of carrying out auxiliary heating on the fuel and introducing auxiliary high-compression gas into a fuel injector to finely atomize the fuel. However, for the unmanned aerial vehicle engine, the auxiliary heating of fuel, the auxiliary compression air pump and the related auxiliary parts are more, the structure is complex and relatively dispersed, and the weight is too large, so that the power-weight ratio of the engine can be reduced; and the fuel is heated independently, extra energy is consumed, and energy is not saved enough.
Disclosure of Invention
The invention aims to provide an integrated gas rail assembly of a spark-ignition multi-fuel-cylinder internal direct injection engine, so that the defects that when a traditional mode is adopted to assist in heating fuel and adding high-pressure gas, more parts are needed, the parts are not compact enough, the weight is heavy, extra energy is needed, and the energy-saving performance is checked are overcome.
To achieve the above object, the present invention provides an integrated air rail assembly of a spark-ignition multi-fuel direct injection engine, comprising: the engine comprises an engine main body and a fuel tank, wherein the engine main body comprises a cylinder body, one end of the cylinder body is provided with a crankcase, the other end of the cylinder body is provided with a fuel injector, and the crankcase is provided with a gas pump; the radiating fins are arranged on the outer wall of the cylinder body at intervals; and one end of the first air rail is connected with the oil injector, the other end of the first air rail sequentially penetrates through the radiating fins to be connected with one end of the second air rail, and the other end of the second air rail is connected with an air outlet of the air pump.
Preferably, in the above technical solution, the other end of the first air rail is connected to one end of the second air rail through a snap-in connection portion.
Preferably, in the above technical solution, an air rail fixing hole is formed in the heat sink, and the first air rail passes through the heat sink through the air rail fixing hole and is connected to one end of the second air rail.
Preferably, in the above technical scheme, the first gas rail includes a main gas rail, which is fixed to the heat sink, one end of the main gas rail is connected to one end of the second gas rail through a quick-connect portion, the other end of the main gas rail is connected to one end of the auxiliary gas rail through a quick-connect portion, and the other end of the auxiliary gas rail is connected to the fuel injector.
Preferably, in the above technical solution, the second air rail is built in a wall of the crankcase.
Preferably, in the above technical solution, the quick-connection portion includes: the quick connector comprises a quick connector body, a first connecting piece and a second connecting piece, wherein a pipe cavity is arranged in the quick connector body, one end of the pipe cavity extends outwards from one end of the quick connector body, and a first through hole communicated with the outside of the quick connector body is formed in the other end of the pipe cavity; the clamping sleeve is sleeved at one end of the tube cavity, and a sealing ring is arranged between the clamping sleeve and the other end of the tube cavity; and the quick-connecting cap is arranged at one end of the quick-connecting body, and a second through hole is formed in the quick-connecting cap.
Preferably, in the above technical scheme, a third through hole is provided in the clamping sleeve, and the aperture of the third through hole is smaller than the aperture of the second through hole.
Preferably, in the above technical solution, the material of the clamping sleeve is polyvinyl fluoride.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the high-pressure auxiliary gas output from the compression air pump passes through the radiating fins on the outer wall of the cylinder body to heat the high-pressure auxiliary gas, so that the fuel in the fuel injector is heated in an auxiliary manner, the heat dissipation effect in the cylinder is improved, additional energy supply is not needed, and energy is saved.
2. The air rail integration and the radiating fin integration are designed, so that the whole structure of the engine is simplified and compact, additional heating equipment is not required, the whole weight is reduced, and the cost is saved.
3. The fast-joint part can make every section gas rail when installing each other, and is simple reliable, has reduced and has maintained the degree of difficulty and maintenance cost.
Drawings
FIG. 1 is a block diagram of a first embodiment of an integrated air rail assembly of a spark-ignited, multi-fuel, direct injection engine of the present invention.
FIG. 2 is a block diagram of a second embodiment of an integrated air rail assembly for a spark-ignited, multi-fuel, direct injection engine.
Fig. 3 is a structural view of the quick-connect portion.
Description of the main reference numerals:
1-an engine main body, 2-a cylinder body, 3-a crankcase, 4-an oil injector, 5-an air pump, 6-a heat radiating fin, 7-a first air rail, 8-a second air rail, 9-a quick-connection part, 10-an air rail fixing hole, 71-a main air rail, 72-an auxiliary air rail, 91-a quick-connection body, 92-a pipe cavity, 93-a first through hole, 94-a clamping sleeve, 95-a sealing ring, 96-a quick-connection cap, 97-a second through hole and 98-a third through hole.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments.
The first embodiment is as follows:
as shown in fig. 1 and 3, the integrated air rail assembly of the spark-ignition multi-fuel direct injection engine in the embodiment includes: the engine comprises an engine main body 1, a cylinder body 2, a crankcase 3, an oil injector 4, an air pump 5, a cooling fin 6, a first air rail 7, a second air rail 8, a quick connection portion 9, an air rail fixing hole 10, a quick connection body 91, a pipe cavity 92, a first through hole 93, a clamping sleeve 94, a sealing ring 95, a quick connection cap 96, a second through hole 97 and a third through hole 98. The engine main body 1 comprises a cylinder body 2 and a crankcase 3 which is matched with one end of the cylinder body 2, an oil sprayer 4 is arranged at the other end of the cylinder body 2, an air pump 5 is arranged on the crankcase 3, a plurality of radiating fins 6 are fixed on the outer side wall of the cylinder 2, the radiating fins 6 are sequentially arranged from one end of the cylinder body 2 to the other end of the cylinder body 2 at certain intervals, air rail fixing holes 10 are formed in the same position of each radiating fin 6, and a plurality of air rail fixing holes 10 are sequentially arranged to form a fixed channel. One end of a first air rail 7 is connected with the oil injector 4, the other end of the first air rail 7 penetrates through the fixed channel to be connected with one end of a second air rail 8, the second air rail 8 is opened in the wall of the crankcase 3, and the other end of the second air rail 8 is directly connected with an air outlet of the air pump 5; the first air rail 7 and the second air rail 8 are connected to each other by a snap connection 9.
With continued reference to fig. 3, the quick-connect portion 9 in this embodiment includes a quick-connect body 91 having a cylindrical lumen 92 formed therein, one end of the lumen 92 extending outward from one end of the quick-connect body 91 to form a cavity, a first through hole 93 formed in the center of the other end of the lumen 92, the other end of the quick-connect body 91 being integrally fixed to one end of the second air rail 8, and the first through hole 93 communicating with the inside of the second air rail 8; a clamping sleeve 94 is fixed at the orifice at one end of the tube cavity 92, a third through hole 98 is formed in the clamping sleeve, and a sealing ring 95 is fixed between the clamping sleeve 94 and the other end of the tube cavity 92; the other end of the first air rail 7 passes through a second through hole 97 in the quick-connection cap 96 and extends to the outside of the quick-connection cap 96 by a section, and the first air rail 7 is in interference fit with the second through hole 97; the other end of the first air rail 7 sequentially passes through the clamping sleeve 94 and the sealing ring 95 to extend into the tube cavity 92, and when the side surface of the quick-connection cap 96 is in contact with the plane of the cavity opening of the tube cavity 92, the first air rail 7 is fixed and limited. The quick-connect cap 96 is made of a hard, low thermal conductive material, the clamping sleeve 94 is made of a polyvinyl fluoride material, and the diameter of the third through hole 98 in the clamping sleeve 94 is smaller than the diameter of the second through hole 97 and the diameter of the other end of the first air rail 7.
Example two:
as shown in fig. 2 and 3, the integrated air rail assembly of the spark-ignition multi-fuel direct injection engine in the embodiment includes: the engine comprises an engine main body 1, a cylinder body 2, a crankcase 3, an oil injector 4, an air pump 5, a cooling fin 6, a first air rail 7, a second air rail 8, a quick connection portion 9, a main air rail 71, an auxiliary air rail 72, a quick connection body 91, a pipe cavity 92, a first through hole 93, a clamping sleeve 94, a sealing ring 95, a quick connection cap 96, a second through hole 97 and a third through hole 98. The engine main body 1 comprises a cylinder body 2 and a crankcase 3 which is matched with one end of the cylinder body 2, an oil sprayer 4 is arranged at the other end of the cylinder body 2, an air pump 5 is arranged on the crankcase 3, a plurality of radiating fins 6 are fixed on the outer side wall of the cylinder 2, and the radiating fins 6 are sequentially arranged from one end of the cylinder body 2 to the other end of the cylinder body 2 at certain intervals. The first air rail 7 includes a primary air rail 71 and a secondary air rail 72; the main air rail 71 is integrally formed and fixed with all the radiating fins 6 in a manner of vertically penetrating through the radiating fins 6; one end of the main air rail 71 is connected with one end of the second air rail 8 through a fast connecting part 9, the second air rail 8 is opened in the wall of the crankcase 3, the other end of the second air rail 8 is directly connected with the air outlet of the air pump 5, the other end of the main air rail 71 is connected with one end of the auxiliary air rail 72 through another fast connecting part 9, and the other end of the auxiliary air rail 72 is connected with the oil injector 4.
With continued reference to fig. 3, a quick-connect portion 9 provided between one end of the main air rail 71 and one end of the second air rail 8 in this embodiment includes a quick-connect body 91 having a cylindrical tube cavity 92 formed therein, one end of the tube cavity 92 extends outward from one end of the quick-connect body 91 to form a cavity opening, the other end of the tube cavity 92 has a first through hole 93 formed in the center thereof, the other end of the quick-connect body 91 is integrally fixed to one end of the second air rail 8, and the first through hole 93 communicates with the inside of the second air rail 8; a clamping sleeve 94 is fixed at the orifice at one end of the tube cavity 92, a third through hole 98 is formed in the clamping sleeve, and a sealing ring 95 is fixed between the clamping sleeve 94 and the other end of the tube cavity 92; one end of the main air rail 71 passes through the second through hole 97 in the quick-connection cap 96 and extends to the outside of the quick-connection cap 96 by a section, and the main air rail 71 is in interference fit with the second through hole 97; one end of the main air rail 71 sequentially passes through the clamping sleeve 94 and the sealing ring 95 to extend into the tube cavity 92, and when the side surface of the quick-connection cap 96 is in contact with the plane of the cavity opening of the tube cavity 92, the main air rail 71 is fixed and limited. The quick-connect cap 96 is made of a hard, low thermal conductivity material, the clamping sleeve 94 is made of a polyvinyl fluoride material, and the diameter of the third through-hole 98 in the clamping sleeve 94 is smaller than the diameter of the second through-hole 97 and the diameter of one end of the main air rail 71.
With continued reference to fig. 3, the other quick-connect portion 9 provided between one end of the secondary air rail 72 and the other end of the primary air rail 71 in this embodiment includes a quick-connect body 91 having a cylindrical tube cavity 92 formed therein, one end of the tube cavity 92 extending outward from one end of the quick-connect body 91 to form a cavity, a first through hole 93 formed in the center of the other end of the tube cavity 92, the other end of the quick-connect body 91 being integrally fixed to the other end of the primary air rail 71, and the first through hole 93 communicating with the inside of the other end of the primary air rail 71; a clamping sleeve 94 is fixed at the orifice at one end of the tube cavity 92, a third through hole 98 is formed in the clamping sleeve, and a sealing ring 95 is fixed between the clamping sleeve 94 and the other end of the tube cavity 92; one end of the auxiliary air rail 72 passes through the second through hole 97 in the quick-connect cap 96 and extends to the outside of the quick-connect cap 96 by a section, and the auxiliary air rail 72 is in interference fit with the second through hole 97; one end of the secondary air rail 72 sequentially passes through the clamping sleeve 94 and the sealing ring 95 to extend into the tube cavity 92, and when the side surface of the quick-connection cap 96 is in contact with the plane of the cavity opening of the tube cavity 92, the secondary air rail 72 is fixed and limited. The quick-connect cap 96 is made of a hard, low thermal conductive material, the clamping sleeve 94 is made of a polyvinyl fluoride material, and the diameter of the third through hole 98 in the clamping sleeve 94 is smaller than the diameter of the second through hole 97 and the diameter of one end of the secondary air rail 72.
In conclusion, the air rail penetrates through the radiating fins and is fixed through the integrated design between the air rail for conveying the compressed auxiliary air and the radiating fins, so that the heat emitted by the cylinder body can be directly absorbed by the compressed auxiliary air in the air rail, and the fuel in the fuel injector is subjected to auxiliary heating, namely the requirement that the fuel is subjected to auxiliary heating is met, the heat radiation performance of the cylinder body is improved, the energy is saved, and the total weight of the engine is reduced; and the quick connection part is used for simply and reliably installing the air rail, so that the maintenance difficulty and the maintenance cost are reduced.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (8)
1. An integrated gas rail assembly of a spark-ignition multi-fuel direct injection engine, comprising:
the engine comprises an engine main body (1) and a fuel pump, wherein the engine main body comprises a cylinder body (2), one end of the cylinder body (2) is provided with a crankcase (3), the other end of the cylinder body (2) is provided with a fuel injector (4), and the crankcase (3) is provided with a gas pump (5);
the radiating fins (6) are arranged on the outer wall of the cylinder body (2) at intervals; and
one end of the first air rail (7) is connected with the oil injector (4), the other end of the first air rail (7) sequentially penetrates through the radiating fins (6) to be connected with one end of the second air rail (8), and the other end of the second air rail (8) is connected with an air outlet of the air pump (5).
2. The integrated spark-ignition, multi-fuel, direct injection engine rail assembly according to claim 1 wherein the other end of the first rail (7) is connected to one end of the second rail (8) by a quick connect (9).
3. The integrated air rail assembly of the spark-ignition multi-fuel direct injection engine according to claim 1, wherein air rail fixing holes (10) are formed in the cooling fin (6), and the first air rail (7) is connected with one end of the second air rail (8) through the cooling fin (6) through the air rail fixing holes (10).
4. The integrated spark-ignition multi-fuel direct injection engine air rail assembly according to claim 1, wherein the first air rail (7) comprises a main air rail (71) fixed to the heat sink (6), one end of the main air rail (71) is connected to one end of the second air rail (8) through a snap-fit connection (9), the other end of the main air rail (71) is connected to one end of a secondary air rail (72) through a snap-fit connection (9), and the other end of the secondary air rail (72) is connected to the fuel injector (4).
5. The integrated rail assembly of a spark-ignition, multi-fuel, direct injection in-cylinder engine according to any of claims 1 to 4, characterized in that the second rail (8) is built into the wall of the crankcase (3).
6. The integrated spark-ignition, multi-fuel, direct injection in-cylinder engine gas rail assembly according to claim 2 or 4, wherein the quick connect (9) comprises:
the quick connector comprises a quick connector body (91), wherein a tube cavity (92) is arranged in the quick connector body (91), one end of the tube cavity (92) extends outwards from one end of the quick connector body (91), and the other end of the tube cavity (92) is provided with a first through hole (93) communicated with the outside of the quick connector body (91);
the clamping sleeve (94) is sleeved at one end of the tube cavity (92), and a sealing ring (95) is arranged between the clamping sleeve (94) and the other end of the tube cavity (92); and
and the quick-connecting cap (96) is arranged at one end of the quick-connecting body (91), and a second through hole (97) is formed in the quick-connecting cap (96).
7. The integrated spark ignition multi-fuel direct injection engine gas rail assembly according to claim 6, wherein a third through hole (98) is formed in the clamping sleeve (94), and the diameter of the third through hole (98) is smaller than that of the second through hole (97).
8. The integrated spark-ignition, multi-fuel, direct injection in-cylinder engine gas rail assembly of claim 6 wherein said clamping sleeve (94) is a polyvinyl fluoride material.
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CN201911082708.5A CN110778423A (en) | 2019-11-07 | 2019-11-07 | Integrated air rail assembly of ignition type multi-fuel in-cylinder direct injection engine |
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CN201911082708.5A CN110778423A (en) | 2019-11-07 | 2019-11-07 | Integrated air rail assembly of ignition type multi-fuel in-cylinder direct injection engine |
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CN201911082708.5A Pending CN110778423A (en) | 2019-11-07 | 2019-11-07 | Integrated air rail assembly of ignition type multi-fuel in-cylinder direct injection engine |
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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CN1181457A (en) * | 1996-10-18 | 1998-05-13 | 三菱重工业株式会社 | Liquefied fuel vaporizing apparatus and gas engine provided with the same |
EP1232338A1 (en) * | 1999-11-09 | 2002-08-21 | James Timothy Sangster | Liquid fuel vapourisation apparatus for fuel injected internal combustion engines |
CN204386773U (en) * | 2015-01-08 | 2015-06-10 | 赵卫强 | A kind of gas generator and gas supply system and automotive power |
CN206409321U (en) * | 2017-01-20 | 2017-08-15 | 重庆鼎辉汽车燃气***有限公司 | A kind of compressed natural gas used as vehicle fuel heater |
CN110242443A (en) * | 2018-03-07 | 2019-09-17 | 浙江星月实业有限公司 | A kind of oil-gas two-way engine |
-
2019
- 2019-11-07 CN CN201911082708.5A patent/CN110778423A/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1181457A (en) * | 1996-10-18 | 1998-05-13 | 三菱重工业株式会社 | Liquefied fuel vaporizing apparatus and gas engine provided with the same |
EP1232338A1 (en) * | 1999-11-09 | 2002-08-21 | James Timothy Sangster | Liquid fuel vapourisation apparatus for fuel injected internal combustion engines |
CN204386773U (en) * | 2015-01-08 | 2015-06-10 | 赵卫强 | A kind of gas generator and gas supply system and automotive power |
CN206409321U (en) * | 2017-01-20 | 2017-08-15 | 重庆鼎辉汽车燃气***有限公司 | A kind of compressed natural gas used as vehicle fuel heater |
CN110242443A (en) * | 2018-03-07 | 2019-09-17 | 浙江星月实业有限公司 | A kind of oil-gas two-way engine |
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