CN115450810A - Dual-fuel cooperative injection system and ship - Google Patents
Dual-fuel cooperative injection system and ship Download PDFInfo
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- CN115450810A CN115450810A CN202211338802.4A CN202211338802A CN115450810A CN 115450810 A CN115450810 A CN 115450810A CN 202211338802 A CN202211338802 A CN 202211338802A CN 115450810 A CN115450810 A CN 115450810A
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- 239000000446 fuel Substances 0.000 title claims abstract description 113
- 238000002347 injection Methods 0.000 title claims abstract description 35
- 239000007924 injection Substances 0.000 title claims abstract description 35
- 230000000712 assembly Effects 0.000 claims abstract description 21
- 238000000429 assembly Methods 0.000 claims abstract description 21
- 239000002828 fuel tank Substances 0.000 claims abstract description 16
- 230000009977 dual effect Effects 0.000 claims description 13
- 229910052799 carbon Inorganic materials 0.000 abstract description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 6
- 239000007789 gas Substances 0.000 description 40
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 9
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 6
- 230000000740 bleeding effect Effects 0.000 description 6
- 239000000243 solution Substances 0.000 description 5
- WWYNJERNGUHSAO-XUDSTZEESA-N (+)-Norgestrel Chemical compound O=C1CC[C@@H]2[C@H]3CC[C@](CC)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 WWYNJERNGUHSAO-XUDSTZEESA-N 0.000 description 3
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 3
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 239000003949 liquefied natural gas Substances 0.000 description 3
- 239000003915 liquefied petroleum gas Substances 0.000 description 3
- 230000007306 turnover Effects 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000002283 diesel fuel Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 235000003642 hunger Nutrition 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000037351 starvation Effects 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Classifications
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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
- F02M43/00—Fuel-injection apparatus operating simultaneously on two or more fuels, or on a liquid fuel and another liquid, e.g. the other liquid being an anti-knock additive
-
- 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
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/0076—Details of the fuel feeding system related to the fuel tank
- F02M37/0088—Multiple separate fuel tanks or tanks being at least partially partitioned
-
- 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
- F02M43/00—Fuel-injection apparatus operating simultaneously on two or more fuels, or on a liquid fuel and another liquid, e.g. the other liquid being an anti-knock additive
- F02M43/04—Injectors peculiar thereto
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention relates to the technical field of power machinery, in particular to a dual-fuel cooperative injection system and a ship. The dual-fuel collaborative injection system comprises two groups of fuel supply assemblies and an injector, wherein each group of fuel supply assemblies comprises a gas supply pump, a control valve, a booster pump, a fuel tank and a fuel supply pump, a gas outlet of the gas supply pump is communicated with a gas inlet of the control valve, two working ports of the control valve are respectively communicated with two gas inlets and two gas outlets of the booster pump, an oil inlet of the fuel supply pump is communicated with the fuel tank, and an oil outlet of the fuel supply pump is communicated with an oil inlet of the booster pump; the oil outlets of the booster pumps in the two groups of fuel supply assemblies are communicated with the oil inlet of the ejector, and the ejector can inject oil into the cylinder of the engine. Different fuels can be contained in the fuel tanks of the two groups of fuel supply assemblies, so that the flexibility of the use of the system fuel is improved, and the carbon emission of the system can be reduced; and the other two groups of fuel supply assemblies share one injector, so that the cost of the system can be reduced.
Description
Technical Field
The invention relates to the technical field of power machinery, in particular to a dual-fuel cooperative injection system and a ship.
Background
With increasingly stringent emissions regulations, it has become increasingly difficult for conventional diesel engines to meet the emission standards of marine engines. Therefore, the search for low-carbon and zero-carbon fuel to replace traditional fossil fuel is a very critical and effective method for solving the carbon emission of ships. At present, various novel fuels such as methanol, ethanol, LPG, LNG, ammonia, hydrogen, DME and the like are technically proven to be used for combustion of a reciprocating internal combustion engine, namely, the novel fuels can replace traditional diesel fuel and be used for the engine, and the carbon emission of ships can be reduced to different degrees according to the types of the fuels. However, unlike traditional diesel fuel, the novel fuel has the characteristics of low viscosity, low lightning, low calorific value, strong corrosion, strong toxicity and the like which are common. Thereby requiring individualized customization of the fuel injection system. The fuel injection system customized by individuation makes ship transformation, use cost high, and the flexibility of use of fuel reduces.
Disclosure of Invention
The invention aims to provide a dual-fuel cooperative injection system and a ship, which improve the flexibility of using system fuel and reduce the carbon emission of the system.
In order to achieve the purpose, the invention adopts the following technical scheme:
a dual fuel co-injection system comprising:
the fuel supply assemblies comprise a gas supply pump, a control valve, a booster pump, a fuel tank and a fuel supply pump, wherein a gas inlet of the gas supply pump is communicated with a gas source, a gas outlet of the gas supply pump is communicated with a gas inlet of the control valve, two working ports of the control valve are respectively communicated with two gas inlets and two gas outlets of the booster pump, a fuel inlet of the fuel supply pump is communicated with the fuel tank, and a fuel outlet of the fuel supply pump is communicated with a fuel inlet of the booster pump;
and oil outlets of the boosting pumps in the two groups of fuel supply assemblies are communicated with oil inlets of the injectors, and the injectors can inject oil into cylinders of the engine.
As the preferred technical scheme of dual-fuel collaborative injection system, the booster pump includes gaseous chamber, fuel chamber and piston rod, the piston rod includes the connecting rod, set up in the first piston of connecting rod one end and set up in the second piston of the connecting rod other end, first piston slide set up in gaseous chamber, the second piston slide set up in the fuel chamber, two business turn over gas ports of booster pump all set up in the chamber wall of gaseous chamber, and wherein first business turn over gas port is located first piston deviates from one side of second piston, second business turn over gas port is located first piston face one side of second piston, the oil inlet and the oil-out of booster pump all set up in the fuel chamber.
As a preferred technical solution of the dual-fuel cooperative injection system, the piston rod further includes an intermediate piston disposed on the connecting rod, the intermediate piston is located between the first piston and the second piston, and the intermediate piston is slidably disposed in the gas cavity; a third air inlet and outlet is also arranged on the cavity wall of the air cavity and arranged between the first piston and the middle piston, and the third air inlet and outlet and the first air inlet and outlet are communicated to the same working port of the control valve;
and a pressure reducing valve and a back pressure valve connected with the pressure reducing valve in parallel are arranged on a communication pipeline between the working port of the control valve and the third air inlet and outlet.
As a preferable technical solution of the dual-fuel cooperative injection system, the back pressure valve is a first check valve, and the first check valve is configured to be in one-way communication from the third air inlet and outlet to a working port direction of the control valve.
The dual-fuel cooperative injection system further comprises a position sensor, wherein the position sensor is used for detecting the movement stroke of the piston rod.
As a preferable technical scheme of the dual-fuel cooperative injection system, a second one-way valve is arranged between an oil outlet of the booster pump and an oil inlet of the ejector, and the second one-way valve is configured to be in one-way conduction from the oil outlet of the booster pump to the oil inlet of the ejector.
As a preferred technical scheme of the dual-fuel cooperative injection system, the dual-fuel cooperative injection system further comprises an energy accumulator, an oil outlet of the fuel supply pump is communicated with an oil inlet of the energy accumulator, and an oil outlet of the energy accumulator is communicated with an oil inlet of the booster pump.
As a preferable technical solution of the dual-fuel cooperative injection system, a third check valve is arranged between an oil outlet of the accumulator and an oil inlet of the booster pump, and the third check valve is configured to be in one-way communication from the oil outlet of the accumulator to the oil inlet of the booster pump.
As a preferred technical scheme of the dual-fuel cooperative injection system, the control valve is a two-position four-way electronic control reversing valve.
A marine vessel comprising a dual fuel co-injection system as claimed in any one of the above aspects.
The invention has the beneficial effects that:
the dual-fuel cooperative injection system provided by the invention comprises two groups of fuel supply assemblies and an injector, wherein fuel tanks of the two groups of fuel supply assemblies can contain different fuels, for example, one fuel tank can contain common diesel, the other fuel tank can contain low-carbon fuels such as methanol, ethanol, LPG, LNG, ammonia, hydrogen or DME, and the two groups of fuel supply assemblies can supply corresponding fuels according to requirements, so that the flexibility of the use of the system fuel is improved, and the carbon emission of the system can be reduced; and the other two groups of fuel supply assemblies share one injector, so that the cost of the system can be reduced.
Drawings
FIG. 1 is a schematic diagram of a dual fuel co-injection system provided by an embodiment of the present invention;
fig. 2 is a schematic structural view of a booster pump according to an embodiment of the present invention.
In the figure:
10. a gas supply pump; 11. a control valve; 12. a booster pump; 121. a gas chamber; 122. a fuel chamber; 123. a connecting rod; 124. a first piston; 125. a second piston; 126. an intermediate piston; 127. a position sensor; 13. a pressure reducing valve; 14. a first check valve; 15. a fuel tank; 16. a fuel supply pump; 17. an accumulator; 18. a third check valve; 19. a second one-way valve;
20. an ejector; 30. a cylinder; 40. and a controller.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally placed when the products of the present invention are used, and are used only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements to be referred to must have specific orientations, be constructed in specific orientations, and operate, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; either mechanically or electrically. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
As shown in fig. 1 and fig. 2, the present invention provides a dual-fuel cooperative injection system, which includes two sets of fuel supply assemblies and an injector 20, each set of fuel supply assembly includes a gas supply pump 10, a control valve 11, a booster pump 12, a fuel tank 15 and a fuel supply pump 16, an air inlet of the gas supply pump 10 is communicated with an air source, an air outlet of the gas supply pump 10 is communicated with an air inlet of the control valve 11, two working ports of the control valve 11 are respectively communicated with two air inlets and two air outlets of the booster pump 12, an oil inlet of the fuel supply pump 16 is communicated with the fuel tank 15, and an oil outlet of the fuel supply pump 16 is communicated with an oil inlet of the booster pump 12; the oil outlets of the booster pumps 12 in both sets of fuel supply assemblies are in communication with the oil inlets of the injectors 20, the injectors 20 being capable of injecting oil into the cylinders 30 of the engine. The fuel tanks 15 of the two groups of fuel supply assemblies can contain different fuels, for example, one fuel tank 15 can contain common diesel, the other fuel tank 15 can contain low-carbon fuels such as methanol, ethanol, LPG, LNG, ammonia, hydrogen or DME, and the two groups of fuel supply assemblies can supply corresponding fuels according to requirements, so that the flexibility of the use of the system fuel is improved, and the carbon emission of the system can be reduced; the other two sets of fuel supply assemblies share a single injector 20, which reduces the cost of the system.
The booster pump 12 includes a gas chamber 121, a fuel chamber 122 and a piston rod, the piston rod includes a connecting rod 123, a first piston 124 disposed at one end of the connecting rod 123 and a second piston 125 disposed at the other end of the connecting rod 123, the first piston 124 is slidably disposed in the gas chamber 121, the second piston 125 is slidably disposed in the fuel chamber 122, two gas inlets and outlets of the booster pump 12 are disposed on the chamber wall of the gas chamber 121, and the first gas inlet and outlet is located at a side of the first piston 124 facing away from the second piston 125, the second gas inlet and outlet is located at a side of the first piston 124 facing the second piston 125, and an oil inlet and an oil outlet of the booster pump 12 are disposed in the fuel chamber 122.
When the control valve 11 is switched to the intake operation position, the gas pumped by the gas supply pump 10 enters the rodless side of the gas chamber 121 through the intake operation position of the control valve 11, so that the piston rod is pushed to move in the direction of compressing the fuel chamber 122 as a whole, the fuel in the fuel chamber 122 is compressed, the compressed fuel is supplied to the injector 20, and the injector 20 injects the compressed high-pressure fuel into the cylinder 30 of the engine. When the injection is finished, the control valve 11 is switched to the air bleeding operation position, and the gas pumped by the gas supply pump 10 enters the rod side of the gas chamber 121 through the air bleeding operation position of the control valve 11, so that the whole piston rod is pushed to move in the direction of compressing the gas chamber 121, and the gas in the gas chamber 121 is released through the air bleeding operation position of the control valve 11.
Further, the piston rod further includes a middle piston 126 disposed on the connecting rod 123, the middle piston 126 is located between the first piston 124 and the second piston 125, the middle piston 126 is slidably disposed in the gas cavity 121, a third gas inlet and outlet is further disposed on the gas cavity 121, the third gas inlet and outlet is disposed on a cavity wall of the gas cavity 121 between the first piston 124 and the middle piston 126, and the third gas inlet and outlet and the first gas inlet and outlet are communicated to a same working port of the control valve 11; a pressure reducing valve 13 and a backpressure valve connected with the pressure reducing valve 13 in parallel are arranged on a communication pipeline between the working port of the control valve 11 and the third air inlet and outlet.
When the control valve 11 is located at the air inlet working position, the air pumped by the air supply pump 10 not only enters the side of the first piston 124 of the air cavity 121 facing away from the middle piston 126 through the first air inlet/outlet, but also enters the side of the first piston 124 of the air cavity 121 facing the middle piston 126 through the third air inlet/outlet after being decompressed by the decompression valve 13, so that the movement of the piston rod is buffered and protected. When the control valve 11 is switched to the air bleeding operation, the air on the side of the first piston 124 in the air cavity 121, which is away from the middle piston 126, is released through the first air inlet/outlet port and the air bleeding operation position of the control valve 11, meanwhile, the air between the first piston 124 and the middle piston 126 in the air cavity 121 is released through the third air inlet/outlet port and the back pressure valve and then is released through the air bleeding operation position of the control valve 11, and the movement of the piston rod is buffered and protected through the arrangement of the back pressure valve. Preferably, the backpressure valve is a first check valve 14, and the first check valve 14 is configured to be communicated in a one-way mode from the third air inlet and outlet to the working port direction of the control valve 11.
In this embodiment, the control valve 11 is a two-position four-way electric control reversing valve, the control valves 11 in the two groups of fuel supply assemblies are electrically connected with the controller 40, and the controller 40 can control the reversing of the control valves 11. Of course, the type of the control valve 11 is not limited to this embodiment, and any other control valve 11 can be used to achieve the same function. In addition, a position sensor 127 is also arranged on the booster pump 12, the position sensors 127 in the two groups of fuel supply assemblies are electrically connected with the controller 40, and the position sensors 127 are used for detecting the moving stroke of the piston rod and realizing the closed-loop control of the boosting process.
Preferably, in the present embodiment, a second check valve 19 is disposed between an oil outlet of the booster pump 12 and an oil inlet of the injector 20, and the second check valve 19 is configured to be in one-way communication from the oil outlet of the booster pump 12 to the oil inlet of the injector 20. By providing the second check valve 19, backflow of oil in the injector 20 can be avoided.
The dual-fuel cooperative injection system provided by the embodiment further comprises an accumulator 17, an oil outlet of the fuel supply pump 16 is communicated with an oil inlet of the accumulator 17, and an oil outlet of the accumulator 17 is communicated with an oil inlet of the booster pump 12. By providing the accumulator 17, a certain amount of fuel can be stored, thereby avoiding fuel starvation. Preferably, a third check valve 18 is arranged between the oil outlet of the accumulator 17 and the oil inlet of the booster pump 12, and the third check valve 18 is configured to be in one-way communication from the oil outlet of the accumulator 17 to the oil inlet of the booster pump 12. By providing the third check valve 18, backflow of oil in the fuel chamber 122 can be avoided.
The embodiment of the invention also provides a ship comprising the dual-fuel collaborative injection system.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A dual fuel co-injection system, comprising:
two groups of fuel supply assemblies, each group of fuel supply assemblies comprises a gas supply pump (10), a control valve (11), a booster pump (12), a fuel tank (15) and a fuel supply pump (16), wherein a gas inlet of the gas supply pump (10) is communicated with a gas source, a gas outlet of the gas supply pump (10) is communicated with a gas inlet of the control valve (11), two working ports of the control valve (11) are respectively communicated with two gas inlet and outlet ports of the booster pump (12), a fuel inlet of the fuel supply pump (16) is communicated with the fuel tank (15), and a fuel outlet of the fuel supply pump (16) is communicated with a fuel inlet of the booster pump (12);
injectors (20), the oil outlets of the booster pumps (12) in the two groups of fuel supply assemblies are communicated with the oil inlets of the injectors (20), and the injectors (20) can inject oil into cylinders (30) of an engine.
2. The dual fuel cooperative injection system of claim 1, wherein the booster pump (12) comprises a gas chamber (121), a fuel chamber (122) and a piston rod, the piston rod comprises a connecting rod (123), a first piston (124) disposed at one end of the connecting rod (123) and a second piston (125) disposed at the other end of the connecting rod (123), the first piston (124) is slidably disposed in the gas chamber (121), the second piston (125) is slidably disposed in the fuel chamber (122), and both gas inlet and outlet ports of the booster pump (12) are disposed on a wall of the gas chamber (121), and wherein a first gas inlet and outlet port is located at a side of the first piston (124) facing away from the second piston (125), a second gas inlet and outlet port is located at a side of the first piston (124) facing the second piston (125), and both an oil inlet and an oil outlet of the booster pump (12) are disposed in the fuel chamber (122).
3. The dual fuel co-injection system of claim 2, wherein the piston rod further comprises an intermediate piston (126) disposed on the connecting rod (123), the intermediate piston (126) being located between the first piston (124) and the second piston (125), the intermediate piston (126) being slidably disposed within the gas chamber (121); a third air inlet and outlet is further formed in the cavity wall of the air cavity (121), the third air inlet and outlet is formed between the first piston (124) and the middle piston (126), and the third air inlet and outlet and the first air inlet and outlet are communicated to the same working port of the control valve (11);
and a pressure reducing valve (13) and a back pressure valve connected with the pressure reducing valve (13) in parallel are arranged on a communication pipeline between the working port of the control valve (11) and the third air inlet and outlet.
4. The dual fuel co-injection system according to claim 3, characterized in that the back pressure valve is a first one-way valve (14), the first one-way valve (14) being configured for one-way communication from the third gas inlet and outlet to the working port direction of the control valve (11).
5. The dual fuel co-injection system according to any of the claims 2-4, further comprising a position sensor (127), the position sensor (127) being adapted to detect a movement stroke of the piston rod.
6. The dual fuel co-injection system as claimed in claim 1, characterized in that a second one-way valve (19) is arranged between an oil outlet of the booster pump (12) and an oil inlet of the injector (20), the second one-way valve (19) being configured to conduct in one direction from the oil outlet of the booster pump (12) to the oil inlet of the injector (20).
7. The dual fuel co-injection system as claimed in claim 1, further comprising an accumulator (17), an oil outlet of the fuel supply pump (16) communicating with an oil inlet of the accumulator (17), an oil outlet of the accumulator (17) communicating with an oil inlet of the booster pump (12).
8. The dual fuel cooperative injection system according to claim 7, characterized in that a third check valve (18) is arranged between the oil outlet of the accumulator (17) and the oil inlet of the booster pump (12), and the third check valve (18) is configured to conduct in one direction from the oil outlet of the accumulator (17) to the oil inlet of the booster pump (12).
9. The dual fuel co-injection system of claim 1, wherein the control valve (11) is a two-position four-way electronically controlled directional valve.
10. Marine vessel, characterized in that it comprises a dual fuel co-injection system according to any of claims 1-9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211338802.4A CN115450810A (en) | 2022-10-28 | 2022-10-28 | Dual-fuel cooperative injection system and ship |
| PCT/CN2023/122023 WO2024088008A1 (en) | 2022-10-28 | 2023-09-27 | Dual-fuel coordinated injection system and ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211338802.4A CN115450810A (en) | 2022-10-28 | 2022-10-28 | Dual-fuel cooperative injection system and ship |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115450810A true CN115450810A (en) | 2022-12-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211338802.4A Pending CN115450810A (en) | 2022-10-28 | 2022-10-28 | Dual-fuel cooperative injection system and ship |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN115450810A (en) |
| WO (1) | WO2024088008A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024088008A1 (en) * | 2022-10-28 | 2024-05-02 | 中船动力研究院有限公司 | Dual-fuel coordinated injection system and ship |
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| CN107787399A (en) * | 2015-04-21 | 2018-03-09 | Ge延巴赫两合无限公司 | bi-fuel internal combustion engine |
| CN210483895U (en) * | 2019-09-02 | 2020-05-08 | 深圳市凯鹏德燃气动力科技有限公司 | Gas injection closed-loop control system of marine diesel/LNG dual-fuel engine |
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| JP5984469B2 (en) * | 2012-04-11 | 2016-09-06 | 三菱重工業株式会社 | Dual fuel diesel engine |
| DE102017208160A1 (en) * | 2017-05-15 | 2018-11-15 | Man Diesel & Turbo Se | Dual-fuel engine and method of operating the same |
| CN111677609A (en) * | 2020-06-09 | 2020-09-18 | 一汽解放汽车有限公司 | Dual-fuel system and vehicle |
| CN112796894A (en) * | 2020-12-21 | 2021-05-14 | 中国船舶重工集团公司第七一一研究所 | Dual-fuel system and method |
| CN113217206A (en) * | 2021-05-14 | 2021-08-06 | 淄柴机器有限公司 | Marine medium-high speed oil-gas double-electric control dual-fuel engine |
| CN115450810A (en) * | 2022-10-28 | 2022-12-09 | 中船动力研究院有限公司 | Dual-fuel cooperative injection system and ship |
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| CN107787399A (en) * | 2015-04-21 | 2018-03-09 | Ge延巴赫两合无限公司 | bi-fuel internal combustion engine |
| CN105003344A (en) * | 2015-07-09 | 2015-10-28 | 胡松平 | Automobile diesel and alcohol dual fuel feed system |
| CN210483895U (en) * | 2019-09-02 | 2020-05-08 | 深圳市凯鹏德燃气动力科技有限公司 | Gas injection closed-loop control system of marine diesel/LNG dual-fuel engine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2024088008A1 (en) * | 2022-10-28 | 2024-05-02 | 中船动力研究院有限公司 | Dual-fuel coordinated injection system and ship |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024088008A1 (en) | 2024-05-02 |
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