CN111706450A - Dual-fuel supply system - Google Patents
Dual-fuel supply system Download PDFInfo
- Publication number
- CN111706450A CN111706450A CN202010608818.7A CN202010608818A CN111706450A CN 111706450 A CN111706450 A CN 111706450A CN 202010608818 A CN202010608818 A CN 202010608818A CN 111706450 A CN111706450 A CN 111706450A
- Authority
- CN
- China
- Prior art keywords
- fuel
- fuel tank
- tank
- engine
- dual
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
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
- 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
- F02M37/0047—Layout or arrangement of systems for feeding fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B69/00—Internal-combustion engines convertible into other combustion-engine type, not provided for in F02B11/00; Internal-combustion engines of different types characterised by constructions facilitating use of same main engine-parts in different types
- F02B69/02—Internal-combustion engines convertible into other combustion-engine type, not provided for in F02B11/00; Internal-combustion engines of different types characterised by constructions facilitating use of same main engine-parts in different types for different fuel types, other than engines indifferent to fuel consumed, e.g. convertible from light to heavy fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
- F02D19/0602—Control of components of the fuel supply system
- F02D19/0613—Switch-over from one fuel to another
-
- 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)
- Oil, Petroleum & Natural Gas (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
The application relates to a dual fuel feeding system relates to automobile engine technical field, and it includes: a gas tank for storing compressed gas, a first fuel tank for storing alternative fuel, a second fuel tank for storing conventional fuel, and a switching mechanism for: when the engine does not work, the communication between the first fuel tank and the air storage tank and the communication between the second fuel tank and the air storage tank are disconnected; when the engine is started by the cold machine, the first fuel tank is disconnected from the air storage tank, and the second fuel tank is communicated with the air storage tank, so that the traditional fuel is input into the engine under the pressure of compressed gas; when the engine runs normally, the second fuel tank is disconnected from the air storage tank, and the first fuel tank is communicated with the air storage tank, so that the alternative fuel is input into the engine under the pressure of compressed gas. The alternative fuel and the traditional fuel can be switched and used through the switching mechanism according to different working conditions of the engine, the pressure build response is fast, and the cost of the whole vehicle and the maintenance cost are saved.
Description
Technical Field
The application relates to the technical field of automobile engines, in particular to a dual-fuel supply system.
Background
At present, a pre-mixing air inlet mode is mostly adopted by a spark ignition engine, namely, fuel and air are mixed in an air inlet pipe. Alternative fuel engine engines, such as natural gas engines, methanol engines, ethanol engines, etc., are available on the market for reduced emissions and optimized energy structures.
However, the low-temperature starting of the alternative fuel engine is difficult, and the traditional fuel (such as gasoline) is required to be used as auxiliary fuel to complete the low-temperature starting, so that the engine needs two sets of fuel supply systems to work together.
The dual fuel system in the related art includes two independent fuel rails, two sets of fuel injectors, and two sets of oil return devices, such as a pressure regulating valve and an oil return pipeline. However, the two liquid fuel supply systems bring difficulties to the arrangement of the engine, and the cost of the whole vehicle and the maintenance cost are increased; in addition, the traditional fuel pump is adopted in the pressure buildup mode of the liquid fuel of the engine at present, the pressure buildup response is slow, and the quick conversion and control of the two fuels are not facilitated.
Disclosure of Invention
The embodiment of the application provides a dual-fuel supply system to solve the problems that two independent fuel supply systems are adopted in the related art, difficulty is brought to engine arrangement, the cost of the whole vehicle is increased, the maintenance cost is increased, and the traditional fuel pump is slow in response and not beneficial to rapid switching and control of two fuels.
In a first aspect, a dual fuel supply system is provided, comprising:
a gas tank for storing compressed gas;
a first fuel tank for storing alternative fuel;
a second fuel tank for storing conventional fuel;
a switching mechanism for:
disconnecting the first fuel tank from the air tank and the second fuel tank from the air tank when the engine is not operating;
when the engine is started cold, the first fuel tank is disconnected from the air storage tank, and the second fuel tank is communicated with the air storage tank, so that the conventional fuel is input into the engine under the pressure of the compressed gas;
when the engine runs normally, the second fuel tank is disconnected from the air storage tank, and the first fuel tank is communicated with the air storage tank, so that the alternative fuel is input into the engine under the pressure of the compressed gas.
In some embodiments, the dual fuel supply system further comprises a controller coupled to the switching mechanism and configured to control the switching mechanism to switch.
In some embodiments, the dual fuel supply system further comprises a dual valve connected between the switching mechanism and the storage tank, and the controller is further connected with the dual valve and used for controlling the on and off of the dual valve.
In some embodiments, the switching mechanism is a three-position four-way valve, and the four-way valve in each position comprises four connecting ports, and the four connecting ports are respectively used for communicating with the air storage tank, the first fuel tank, the second fuel tank and the atmosphere.
In some embodiments, in the three-position, four-way valve:
in the four connecting ports of the four-way valve at one position, two interfaces for connecting the air storage tank and the second fuel tank are communicated, and two interfaces for connecting the first fuel tank and the atmosphere are communicated;
in the four connecting ports of the four-way valve at the other position, two ports for connecting the air storage tank and the atmosphere are communicated;
and in the four connecting ports of the four-way valve at the other position, two interfaces for connecting the air storage tank and the first fuel tank are communicated, and two interfaces for connecting the second fuel tank and the atmosphere are communicated.
In some embodiments, the dual fuel supply system further comprises an oil injection mechanism in communication with both the first fuel tank and the second fuel tank, the oil injection mechanism being configured to inject the conventional fuel in the second fuel tank into the engine when the engine is cold started; the alternative fuel in the first fuel tank is injected into the engine when the engine is operating normally.
In some embodiments, the fuel injection mechanism comprises:
an oil rail, one end of which is communicated with the first fuel tank and the second fuel tank;
and one end of the oil spray nozzle is communicated with the other end of the oil rail, and the other end of the oil spray nozzle faces the engine.
In some embodiments, a first check valve is connected between the first fuel tank and the fuel injection mechanism, and the first check valve is configured to prevent the substitute fuel in the first fuel tank from flowing into the second fuel tank.
In some embodiments, a second one-way valve is connected between the second fuel tank and the fuel injection mechanism, and the second one-way valve is used for preventing the conventional fuel in the second fuel tank from flowing into the first fuel tank.
In some embodiments, the alternative fuel is natural gas, methanol, ethanol, dimethyl ether, or hydrogen; the traditional fuel is gasoline or diesel.
The beneficial effect that technical scheme that this application provided brought includes: according to different working conditions of the engine, the alternative fuel and the traditional fuel are switched and used through the switching mechanism, compressed gas is used as a power source, the fuel is supplied, the pressure build response is fast, and the cost of the whole vehicle and the maintenance cost are saved.
The embodiment of the application provides a dual-fuel supply system, when an engine does not work, a first fuel tank and a second fuel tank are disconnected and communicated with a gas storage tank through a switching mechanism, and the gas storage tank does not convey compressed gas to the first fuel tank and the second fuel tank and does not supply oil to the engine; when the engine is started by a cold machine, the second fuel tank is communicated with the air storage tank through the switching mechanism, the traditional fuel is conveyed to the engine, and the cold machine starting of the engine is quickly realized; when the engine normally runs, the first fuel tank is communicated with the air storage tank through the switching mechanism, the substitute fuel is conveyed to the engine, the normal running of the engine is maintained, and the purposes of energy conservation and emission reduction are achieved. Therefore, the embodiment of the application adopts a set of fuel supply system, realizes the switching use of the alternative fuel and the traditional fuel through the switching mechanism according to different working conditions of the engine, adopts the compressed gas as a power source, realizes the supply of the fuel, has quick pressure build response, and saves the cost of the whole vehicle and the maintenance cost.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a dual fuel supply system provided by an embodiment of the present application when an engine is not operating;
FIG. 2 is a schematic structural diagram of a dual fuel supply system provided by the embodiment of the present application when the engine is started cold;
FIG. 3 is a schematic structural diagram of a dual fuel supply system provided by an embodiment of the present application when the engine is running normally;
fig. 4 is a schematic structural diagram of a switching mechanism in the embodiment of the present application.
In the figure: 1. a gas storage tank; 2. a first fuel tank; 3. a second fuel tank; 4. a switching mechanism; 5. an oil injection mechanism; 50. an oil rail; 51. an oil jet; 6. a first check valve; 7. a second one-way valve; 8. a dual valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. 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 application.
The embodiment of the application provides a dual-fuel supply system, which comprises a gas storage tank 1, a first fuel tank 2, a second fuel tank 3 and a switching mechanism 4, wherein the gas storage tank 1 is used for storing compressed gas, the compressed gas is compressed air or nitrogen and is used as a power source for supplying fuel, and the fuel can be pressed into an engine under preset pressure to realize oil pressure regulation without oil return or special oil return devices; the first fuel tank 2 is used for storing alternative fuel and supplying the alternative fuel to the engine; the second fuel tank 3 is used for storing conventional fuel to supply the conventional fuel to the engine.
Referring to fig. 1, the switching mechanism 4 is used to disconnect the communication between the first fuel tank 2 and the air tank 1 and the communication between the second fuel tank 3 and the air tank 1 when the engine is not operating (the engine speed is 0), and the pressure in the first fuel tank 2 and the pressure in the second fuel tank 3 are the same as the ambient pressure, and the fuel in both fuel tanks is not supplied because of no air pressure driving.
Referring to fig. 2, when the engine is started by a cold machine (the rotation speed of the starter is 0-700rpm, the water temperature is about 25 degrees centigrade), because the alternative fuel is difficult to drive the engine to start at a low temperature, in this condition, the switching mechanism 4 disconnects the first fuel tank 2 from the air storage tank 1 and connects the second fuel tank 3 with the air storage tank 1, so that the conventional fuel in the second fuel tank 3 is input into the engine under the pressure of the compressed gas in the air storage tank 1, and the engine is started by the conventional fuel.
Referring to fig. 3, when the engine is in normal operation (the rotation speed of the engine is greater than 700rpm, and the water temperature is 80-90 ℃), the alternative fuel can drive the engine to start, and under such a condition, the switching mechanism 4 disconnects the communication between the second fuel tank 3 and the air storage tank 1 and connects the first fuel tank 2 and the air storage tank 1, so that the alternative fuel in the first fuel tank 2 is input into the engine under the pressure of the compressed gas in the air storage tank 1, and the engine is driven to normally operate by the alternative fuel, thereby achieving the purposes of energy conservation and emission reduction.
The working principle of the dual-fuel supply system of the embodiment of the application is as follows:
when the engine does not work, the first fuel tank 2 and the second fuel tank 3 are disconnected and communicated with the air storage tank 1 through the switching mechanism 4, and the air storage tank 1 does not convey compressed air to the first fuel tank 2 and the second fuel tank 3 and does not supply oil to the engine; when the engine is started by a cold machine, the second fuel tank 3 is communicated with the air storage tank 1 through the switching mechanism 4, and the traditional fuel is conveyed to the engine, so that the cold machine starting of the engine is quickly realized; when the engine runs normally, the first fuel tank 2 is communicated with the air storage tank 1 through the switching mechanism 4, the substitute fuel is conveyed to the engine, the normal running of the engine is maintained, and the purposes of energy conservation and emission reduction are achieved.
The embodiment of the application adopts a set of fuel supply system, and according to the different working conditions of the engine, the switching of the alternative fuel and the traditional fuel is realized through the switching mechanism 4, and the compressed gas is adopted as a power source, so that the supply of the fuel is realized, the pressure building response is fast, and the cost of the whole vehicle and the maintenance cost are saved.
Preferably, the dual fuel supply system further comprises a controller, wherein the controller is connected with the switching mechanism 4 and is used for controlling the switching mechanism 4 to switch according to the working condition of the engine. When the engine does not work, the controller controls the switching mechanism 4 to disconnect the first fuel tank 2 and the second fuel tank 3 from the air storage tank 1, the air storage tank 1 does not convey compressed air to the first fuel tank 2 and the second fuel tank 3, and does not supply oil to the engine; when the engine is started by a cold machine, the controller controls the switching mechanism 4 to communicate the second fuel tank 3 with the air storage tank 1, so that the traditional fuel is conveyed to the engine, and the cold machine starting of the engine is quickly realized; when the engine runs normally, the controller controls the switching mechanism 4 to communicate the first fuel tank 2 with the air storage tank 1, so that the alternative fuel is conveyed to the engine, and the normal running of the engine is maintained. The effects of intelligent control, quick response and quick switching of oil supply of two fuels are realized.
Preferably, the dual-fuel supply system further comprises a dual valve 8, the dual valve 8 is connected between the switching mechanism 4 and the gas storage tank 1, two ends of the dual valve 8 are respectively connected with the switching mechanism 4 and the gas storage tank 1, and the controller is further connected with the dual valve 8 and is used for controlling the on and off of the dual valve 8. When the engine does not work, the controller controls the duplex valve 8 to close so as to close the air storage tank 1 and not supply compressed air to the first fuel tank 2 and the second fuel tank 3; when the sender is started by a cold machine, the controller controls the duplex valve 8 to be opened so as to realize the communication between the second fuel tank 3 and the air storage tank 1; when the engine is running normally, the controller controls the duplex valve 8 to open to enable communication between the first fuel tank 2 and the air tank 1.
Referring to fig. 4, the switching mechanism 4 is a three-position four-way valve, and the four-way valve at each position includes four connection ports P (air outlet), T (atmosphere port), a (exhaust port), and B (exhaust port), and the four connection ports are respectively used for communicating with the air storage tank 1, the first fuel tank 2, the second fuel tank 3, and the atmosphere. P is communicated with the air storage tank 1, T is communicated with the atmosphere, A is communicated with the second fuel tank 3, and B is communicated with the first fuel tank 2.
Further, in a three-position four-way valve: among four connectors of a four-way valve (at the left side) at one position, two connectors for connecting the air storage tank 1 and the second fuel tank 3 are communicated, and two connectors for connecting the first fuel tank 2 and the atmosphere are communicated; in the four connecting ports of the four-way valve (middle position) at the other position, two ports for connecting the air storage tank 1 and the atmosphere are communicated; of the four connection ports of the four-way valve (right side position) at the remaining one position, two ports for connecting the gas tank 1 and the first fuel tank 2 are communicated, and two ports for connecting the second fuel tank 3 and the atmosphere are communicated.
When the engine does not work, the controller controls the three-position four-way valve to be positioned at the middle position so as to realize the disconnection of the first fuel tank 2 and the second fuel tank 3 with the air storage tank 1; when the sender cold machine is started, the controller controls the three-position four-way valve to be positioned at the left side position so as to realize the communication between the first fuel tank 2 and the atmosphere, the evacuation of the compressed gas in the gas supply pipeline of the first fuel tank 2 and the communication between the second fuel tank 3 and the gas storage tank 1; when the engine runs normally, the controller controls the three-position four-way valve to be positioned at the right position so as to realize the communication between the second fuel tank 3 and the atmosphere, the evacuation of the compressed gas in the air supply pipeline of the second fuel tank 3 and the communication between the first fuel tank 2 and the gas storage tank 1.
Further, the dual-fuel supply system also comprises an oil injection mechanism 5, wherein the oil injection mechanism 5 is communicated with the first fuel tank 2 and the second fuel tank 3, and the oil injection mechanism 5 is used for injecting the traditional fuel in the second fuel tank 3 into the engine when the engine is started in a cold machine; when the engine is running normally, the alternative fuel in the first fuel tank 2 is injected into the engine. The dual fuels of the embodiment of the application share one set of oil injection mechanism 5, so that the oil injection efficiency is greatly improved, and the cost is saved.
Further, the fuel injection mechanism 5 includes a fuel rail 50 and a fuel injection nozzle 51, one end of the fuel rail 50 is communicated with both the first fuel tank 2 and the second fuel tank 3; one end of the oil nozzle 51 is communicated with the other end of the oil rail 50, and the other end faces the engine. The fuel injection nozzle 51 is controlled by a solenoid valve, and the fuel injection amount is controlled by duty ratio adjustment.
Preferably, a first check valve 6 is connected between the first fuel tank 2 and the fuel injection mechanism 5, and the first check valve 6 is used for preventing the alternative fuel in the first fuel tank 2 from flowing into the second fuel tank 3, and the fuel entering the fuel rail 50 does not flow back into the fuel tank.
Preferably, a second check valve 7 is connected between the second fuel tank 3 and the fuel injection mechanism 5, and the second check valve 7 is used for preventing the conventional fuel in the second fuel tank 3 from flowing into the first fuel tank 2, and the fuel entering the fuel rail 50 does not flow back into the fuel tank.
Optionally, the alternative fuel is natural gas, methanol, ethanol, dimethyl ether or hydrogen, and the alternative fuel plays a role in reducing emission and optimizing energy; the traditional fuel is gasoline or diesel oil, is easy to ignite and is used as auxiliary fuel to finish the low-temperature starting of the engine.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A dual fuel supply system, comprising:
a gas tank (1) for storing compressed gas;
a first fuel tank (2) for storing alternative fuel;
a second fuel tank (3) for storing conventional fuel;
a switching mechanism (4) for:
when the engine does not work, the communication between the first fuel tank (2) and the air storage tank (1) is cut off, and the communication between the second fuel tank (3) and the air storage tank (1) is cut off;
when the engine is started cold, the first fuel tank (2) is disconnected from the air storage tank (1), and the second fuel tank (3) is communicated with the air storage tank (1), so that the conventional fuel is input into the engine under the pressure of the compressed gas;
when the engine runs normally, the communication between the second fuel tank (3) and the air storage tank (1) is disconnected, and the first fuel tank (2) and the air storage tank (1) are communicated, so that the alternative fuel is input into the engine under the pressure of the compressed gas.
2. The dual fuel supply system as claimed in claim 1, characterized in that it further comprises a controller connected to the switching mechanism (4) and adapted to control the switching mechanism (4) to switch.
3. The dual fuel supply system as claimed in claim 2, further comprising a dual valve (8), wherein the dual valve (8) is connected between the switching mechanism (4) and the gas storage tank (1), and the controller is further connected to the dual valve (8) and is configured to control the on and off of the dual valve (8).
4. The dual fuel supply system as claimed in claim 1, wherein the switching mechanism (4) is a three-position four-way valve, and the four-way valve in each position includes four connection ports for communicating with the gas tank (1), the first fuel tank (2), the second fuel tank (3), and the atmosphere, respectively.
5. The dual fuel supply system of claim 4 wherein in the three-position, four-way valve:
among four connectors of a four-way valve at one position, two connectors for connecting the air storage tank (1) and the second fuel tank (3) are communicated, and two connectors for connecting the first fuel tank (2) and the atmosphere are communicated;
in the four connecting ports of the four-way valve at the other position, two ports for connecting the air storage tank (1) and the atmosphere are communicated;
and in the four connecting ports of the four-way valve at the other position, two interfaces for connecting the air storage tank (1) and the first fuel tank (2) are communicated, and two interfaces for connecting the second fuel tank (3) and the atmosphere are communicated.
6. The dual fuel supply system as claimed in claim 1, further comprising an oil injection mechanism (5), the oil injection mechanism (5) communicating with both the first fuel tank (2) and the second fuel tank (3), the oil injection mechanism (5) being adapted to inject the conventional fuel in the second fuel tank (3) into the engine when the engine is cold started; when the engine is running normally, the alternative fuel in the first fuel tank (2) is injected into the engine.
7. The dual fuel supply system as claimed in claim 6, characterized in that the oil injection mechanism (5) comprises:
an oil rail (50) having one end communicating with both the first fuel tank (2) and the second fuel tank (3);
and one end of the oil nozzle (51) is communicated with the other end of the oil rail (50), and the other end faces the engine.
8. The dual fuel supply system as claimed in claim 7, characterized in that a first non return valve (6) is connected between the first fuel tank (2) and the oil injection mechanism (5), the first non return valve (6) being adapted to prevent the alternative fuel in the first fuel tank (2) from flowing into the second fuel tank (3).
9. The dual fuel supply system as claimed in claim 7, characterized in that a second check valve (7) is connected between the second fuel tank (3) and the oil injection mechanism (5), the second check valve (7) being used to prevent the conventional fuel in the second fuel tank (3) from flowing into the first fuel tank (2).
10. The dual fuel supply system of claim 1, wherein the alternative fuel is natural gas, methanol, ethanol, dimethyl ether, or hydrogen; the traditional fuel is gasoline or diesel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010608818.7A CN111706450A (en) | 2020-06-29 | 2020-06-29 | Dual-fuel supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010608818.7A CN111706450A (en) | 2020-06-29 | 2020-06-29 | Dual-fuel supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111706450A true CN111706450A (en) | 2020-09-25 |
Family
ID=72544589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010608818.7A Pending CN111706450A (en) | 2020-06-29 | 2020-06-29 | Dual-fuel supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111706450A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113047996A (en) * | 2021-03-31 | 2021-06-29 | 广船国际有限公司 | Methanol fuel dual-fuel supply system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1275676A (en) * | 2000-07-11 | 2000-12-06 | 上海交通大学 | Low-pressure electric controlled dimethyl ether fuel injection system |
| CN101092917A (en) * | 2007-07-21 | 2007-12-26 | 郑国璋 | Automobile fuel supply system |
| CN102588124A (en) * | 2012-03-23 | 2012-07-18 | 武汉市菱电汽车电子有限责任公司 | Automobile dual-fuel supply system based on single fuel rail and single fuel injector set |
| CN202900489U (en) * | 2012-11-27 | 2013-04-24 | 陆小飞 | Vehicle fuel system with dual fuel supply |
| CN203403961U (en) * | 2013-07-25 | 2014-01-22 | 张亚东 | Double-fuel methanol automobile device |
| CN204226080U (en) * | 2014-11-20 | 2015-03-25 | 薛浪星 | Methanol/gasoline double-fuel single track single spraying intelligent conversion system complete sets of equipment |
-
2020
- 2020-06-29 CN CN202010608818.7A patent/CN111706450A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1275676A (en) * | 2000-07-11 | 2000-12-06 | 上海交通大学 | Low-pressure electric controlled dimethyl ether fuel injection system |
| CN101092917A (en) * | 2007-07-21 | 2007-12-26 | 郑国璋 | Automobile fuel supply system |
| CN102588124A (en) * | 2012-03-23 | 2012-07-18 | 武汉市菱电汽车电子有限责任公司 | Automobile dual-fuel supply system based on single fuel rail and single fuel injector set |
| CN202900489U (en) * | 2012-11-27 | 2013-04-24 | 陆小飞 | Vehicle fuel system with dual fuel supply |
| CN203403961U (en) * | 2013-07-25 | 2014-01-22 | 张亚东 | Double-fuel methanol automobile device |
| CN204226080U (en) * | 2014-11-20 | 2015-03-25 | 薛浪星 | Methanol/gasoline double-fuel single track single spraying intelligent conversion system complete sets of equipment |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113047996A (en) * | 2021-03-31 | 2021-06-29 | 广船国际有限公司 | Methanol fuel dual-fuel supply system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7627416B2 (en) | Method and apparatus for operating a dual fuel internal combustion engine | |
| EP1969217B1 (en) | A multi fuel co injection system for internal combustion and turbine engines | |
| US8245695B2 (en) | Method of manufacturing and installation of high pressure liquid LPG fuel supply and dual or mixed fuel supply systems | |
| CN113202638A (en) | Near-zero emission liquid ammonia-diesel dual-fuel supply system | |
| CN102588124B (en) | Automobile dual-fuel supply system based on single fuel rail and single fuel injector set | |
| KR20110079550A (en) | Direct injection bi-fuel system for combustion engines | |
| CN109458262B (en) | Dual-fuel system | |
| CN113202637A (en) | Liquid ammonia-diesel oil dual-fuel injection device | |
| CN203403961U (en) | Double-fuel methanol automobile device | |
| CN111706450A (en) | Dual-fuel supply system | |
| US10414268B2 (en) | Gas tank arrangement for a dual fuel internal combustion engine | |
| CN216518365U (en) | Double-nozzle interactive combustion-supporting type dual-fuel internal combustion engine injection system | |
| CA2848849C (en) | Multi-fuel injection system and method | |
| CN102562392B (en) | Diesel and dimethyl ether online mixing oil supply system | |
| CN220705810U (en) | Three-fuel generator set | |
| CN117967462A (en) | Methanol-diesel dual-fuel engine | |
| CN218509606U (en) | Engine air intake and exhaust system and automobile hybrid power system | |
| CN214247501U (en) | Engine combustion-supporting cold machine starting device | |
| CN216894645U (en) | Ignition pressure stabilizing device of IGCC power station gas turbine, fuel gas system, gas turbine and IGCC power station | |
| CN217080626U (en) | Methanol and hydrogen mixed fuel power system and vehicle | |
| CN212106085U (en) | Gasoline-free methanol automobile | |
| CN101298855A (en) | Internal combustion engine oil-water mixed combustion apparatus | |
| CN118008647A (en) | Coaxial oil nozzle, oil injection system and engine | |
| CN113958434A (en) | Methanol mixing pipe for generator set engine | |
| CN116220957A (en) | Ammonia alcohol engine system and fuel supply control method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200925 |