CN212130636U - Fuel supply system of gas fuel engine and vehicle - Google Patents
Fuel supply system of gas fuel engine and vehicle Download PDFInfo
- Publication number
- CN212130636U CN212130636U CN202020576251.5U CN202020576251U CN212130636U CN 212130636 U CN212130636 U CN 212130636U CN 202020576251 U CN202020576251 U CN 202020576251U CN 212130636 U CN212130636 U CN 212130636U
- Authority
- CN
- China
- Prior art keywords
- pressure
- gas
- fuel
- engine
- communicated
- 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.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Abstract
The utility model relates to a gaseous fuel's of vehicle supply technical field discloses a gaseous fuel engine fuel feeding system and vehicle. The fuel supply system for a gaseous fuel engine comprises: a gas tank for containing gas fuel; a first pressure sensor provided at an outlet of the gas tank and detecting that the pressure of the gaseous fuel is a first pressure; the pressurizing piece can be communicated with the air storage tank when the first pressure is not more than the preset pressure; the inlet end of the pressure regulating component is communicated with the pressurizing piece so as to regulate the pressure of the gas fuel to a preset pressure, and the outlet end of the pressure regulating component is communicated with the engine; the pressure reducing assembly is connected with the pressurizing assembly in parallel, when the first pressure is higher than the preset pressure, an inlet of the pressure reducing assembly is communicated with the gas storage tank, and an outlet of the pressure reducing assembly is communicated with the engine. The utility model discloses a gaseous fuel engine fuel feed system makes the gaseous fuel's of gas holder pressure be not more than and still can continue to provide gaseous fuel to the engine after predetermineeing pressure, has improved the actual continuation of the journey mileage of vehicle greatly.
Description
Technical Field
The utility model relates to a gaseous fuel's of vehicle supply technical field especially relates to a gaseous fuel engine fuel feeding system and vehicle.
Background
With the continuous improvement of the national economic level, the number of automobiles kept in China is increased year by year, and the automobiles become very important transportation means in national production and life. However, in recent years, the problem of energy crisis caused by automobile fuel consumption and the problem of environmental pollution caused by automobile exhaust are increasingly highlighted in China and even worldwide. The low energy consumption, low pollution and low carbon emission are the problems which need to be solved in the development of automobile technology and automobile engines. The new fuel is one of ways of reducing the petroleum consumption of the internal combustion engine, natural gas resources in China are rich, hydrogen is a gas fuel with various sources, the fuel sources of the engine can be expanded by using the gas fuels such as natural gas, hydrogen and the like, and the petroleum consumption is reduced. Meanwhile, the gas fuel can also help the engine to improve the working thermal efficiency and reduce the emission.
Gas-fueled vehicles typically use gas tanks to store fuel. The density of the gas fuel is much less than that of liquid fuel such as gasoline and diesel oil, so in order to ensure the driving range of the vehicle, the vehicle-mounted gas tank can use higher storage pressure to ensure that the gas fuel with sufficient quality is loaded in the gas tank, for example, the vehicle-mounted hydrogen tank for hydrogen generally adopts the gas storage pressure of 35MPa or 70 MPa. On the other hand, higher pressures may also provide injection pressures for gaseous fuel injection to overcome gaseous backpressure within the engine's gas path or cylinder to inject gaseous fuel into a given location.
Both gasoline and diesel engines use fixed fuel injection pressures, as are typically used with gaseous fuel engines. In a conventional gas supply system for a gas fuel engine, a gas fuel in a gas tank is generally supplied to the engine after being depressurized and stabilized by a pressure reducing valve, a pressure stabilizing valve, and the like. Theoretically, as the gaseous fuel is consumed, the pressure of the gaseous fuel in the gas tank is gradually reduced, the pressure of the gaseous fuel in the gas tank is lower after the gaseous fuel is delivered to the internal combustion engine through the pressure regulating mechanism, and when the pressure of the gaseous fuel delivered to the engine is lower than the injection pressure required by the fuel injection system, the normal operation of the fuel supply system of the engine is affected, so that the injection amount of the gaseous fuel is smaller than a target value, and even the gaseous fuel cannot be injected into a specified position because the injection pressure is lower than the environmental back pressure. Therefore, once the pressure of the gas fuel in the gas storage tank of the existing gas fuel engine and automobile is lower than the injection pressure, the engine can not work normally, and a user needs to add fuel to a gas filling station in time, so that the endurance mileage of the automobile is limited to a certain extent. For example, a certain gas fuel automobile uses a 35MPa vehicle-mounted gas storage system, and the fuel injection pressure required by an engine is 10MPa, so that along with the consumption of fuel, when the pressure of a gas storage tank is reduced to be close to 10MPa, a user is required to go to a gas station to add fuel; if the mileage that can be achieved by exhausting all of the gaseous fuel in the gas tank is defined as the theoretical driving range, the actual driving range of the vehicle is only about 70% of the theoretical driving range.
SUMMERY OF THE UTILITY MODEL
Based on the above, an object of the utility model is to provide a gaseous fuel engine fuel supply system has solved the problem that the vehicle that exists because gaseous fuel in the gas holder can't once only spray to the engine completely and lead to is less than theoretical mileage.
Another object of the present invention is to provide a vehicle, which increases the actual driving mileage of the vehicle.
In order to achieve the purpose, the utility model adopts the following technical proposal:
a gaseous fuelled engine fuel supply system comprising: a gas tank for holding gaseous fuel; a first pressure sensor provided at an outlet of the gas tank and detecting that a pressure of the gaseous fuel at the outlet of the gas tank is a first pressure; a plenum that is capable of communicating with the gas tank and pressurizing the gaseous fuel when the first pressure is not greater than a preset pressure; the inlet end of the pressure regulating assembly is communicated with the pressurizing piece so as to regulate the pressure of the gas fuel to the preset pressure, and the outlet end of the pressure regulating assembly is communicated with an engine; the pressure reducing assembly is connected with the pressurizing assembly in parallel, when the first pressure is higher than the preset pressure, the inlet of the pressure reducing assembly can be communicated with the gas storage tank so that the pressure of the gas fuel is reduced to the preset pressure, and the outlet of the pressure reducing assembly is communicated with the engine.
As a preferred scheme of a gaseous fuel engine fuel feed system, gaseous fuel engine fuel feed system still includes the three-way valve, the three-way valve is located the export of gas holder, be equipped with air inlet, first gas outlet and second gas outlet on the three-way valve, the air inlet with the gas holder intercommunication, first gas outlet with decompression subassembly intercommunication, the second gas outlet with pressure boost piece intercommunication, when first pressure is greater than preset pressure, the air inlet with first gas outlet intercommunication and the air inlet with the disconnection of second gas outlet, when first pressure is not greater than preset pressure, the air inlet with the second gas outlet intercommunication and the air inlet with the disconnection of first gas outlet.
As a preferable scheme of the fuel supply system of the gaseous fuel engine, the pressure reducing assembly comprises a pressure reducing valve and a first check valve which are arranged in series, and the pressure reducing valve is communicated with the first check valve.
Preferably, the pressure regulating assembly comprises a pressure regulating valve and a second check valve which are arranged in series, and the pressure regulating valve is communicated with the second check valve. As a preferable scheme of the fuel supply system of the gas fuel engine, the fuel supply system of the gas fuel engine further comprises a pressure stabilizing gas rail, one end of the pressure stabilizing gas rail is respectively communicated with the pressure regulating assembly and the pressure reducing assembly, and the other end of the pressure stabilizing gas rail is communicated with the engine so as to introduce the gas fuel into the engine.
As a preferable aspect of the fuel supply system for a gaseous fuel engine, the fuel supply system for a gaseous fuel engine further includes a second pressure sensor that is provided on the pressure-stabilizing gas rail and detects that the pressure of the gaseous fuel in the pressure-stabilizing gas rail is a second pressure.
As a preferable mode of the fuel supply system for a gaseous fuel engine, the pressure regulating assembly includes a pressure relief valve, a check valve, and a third check valve, one end of the pressure relief valve is capable of communicating with the pressure-stabilizing gas rail, the other end of the pressure relief valve is capable of communicating with the check valve, the check valve is capable of flowing gaseous fuel in the pressure-stabilizing gas rail to an inlet of the pressurizing member, the third check valve is provided at an outlet of the pressurizing member, and the pressure relief valve is opened when the second pressure is higher than the preset pressure.
Preferably, the gaseous fuel engine fuel supply system comprises a nozzle communicating with the rail, the nozzle being capable of injecting the gaseous fuel into the engine.
Preferably, the preset pressure is greater than 0.4MPa, which is a fuel supply system for a gaseous fuel engine.
A vehicle comprising an engine and the gaseous fuel engine fuel supply system of any preceding claim, the gaseous fuel engine fuel supply system being capable of providing the gaseous fuel at the preset pressure to the engine.
The utility model has the advantages that: the utility model discloses a fuel supply system of a gas fuel engine, which has two supply modes when providing gas fuel for the engine, when the pressure of the gas fuel at the outlet of a gas storage tank is higher than the preset pressure, the gas fuel at the outlet of the gas storage tank is decompressed by a decompression component and then is directly introduced into the engine; when the pressure of the gas fuel at the outlet of the gas storage tank is not greater than the preset pressure, the gas fuel at the outlet of the gas storage tank is introduced into the engine after being regulated by the pressurizing piece and the pressure regulating assembly, so that the gas fuel can be continuously provided for the engine after the pressure of the gas fuel at the gas storage tank is not greater than the preset pressure, and the actual cruising mileage of the vehicle is greatly improved.
The utility model discloses a vehicle has the preceding gaseous fuel engine fuel feed system, has increased the actual continuation of the journey mileage of vehicle.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
FIG. 1 is a schematic diagram of a fuel supply system for a gaseous fuel engine according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a fuel supply system of a gaseous fuel engine according to a second embodiment of the present invention.
In the figure:
1. a gas storage tank; 2. a first pressure sensor; 3. a pressure increasing member; 411. a pressure regulating valve; 412. a second check valve; 421. a pressure relief valve; 422. a one-way valve; 423. a third check valve; 5. a pressure relief assembly; 51. a pressure reducing valve; 52. a first check valve; 6. a three-way valve; 7. a pressure stabilizing air rail; 8. a second pressure sensor; 9. a nozzle; 100. an engine; 200. and a controller.
Detailed Description
In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "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, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; 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 invention can be understood in specific cases to those skilled in the art.
The first embodiment is as follows:
the embodiment provides a fuel supply system of a gas fuel engine, as shown in fig. 1, which includes a gas storage tank 1, a first pressure sensor 2, a pressure increasing member 3, a pressure regulating assembly and a pressure reducing assembly 5, where the gas storage tank 1 is used for containing gas fuel, the first pressure sensor 2 is disposed at an outlet of the gas storage tank 1 and detects that the pressure of the gas fuel at the outlet of the gas storage tank 1 is a first pressure, when the first pressure is not greater than a preset pressure, the pressure increasing member 3 can be communicated with the gas storage tank 1 and increases the pressure of the gas fuel, an inlet end of the pressure regulating assembly is communicated with the pressure increasing member 3 to adjust the pressure of the gas fuel to the preset pressure, an outlet end of the pressure regulating assembly is communicated with the engine 100, the pressure reducing assembly 5 and the pressure increasing member 3 are arranged in parallel, when the first pressure is greater than the preset pressure, an inlet of the pressure reducing, the outlet of the decompression assembly 5 communicates with the engine 100.
The pressurizing member 3 is a pressurizing pump such as a diaphragm pump or a piston pump to increase the pressure of the gaseous fuel to a predetermined pressure, and the gaseous fuel may be a gas that can be used as a fuel, such as hydrogen gas or natural gas.
The fuel supply system of the gaseous fuel engine provided by the embodiment has two supply modes when supplying gaseous fuel to the engine 100, when the pressure of the gaseous fuel at the outlet of the gas storage tank 1 is higher than the preset pressure, the gaseous fuel at the outlet of the gas storage tank 1 is decompressed by the decompression component 5 and then directly enters the engine 100; when the pressure of the gas fuel at the outlet of the gas storage tank 1 is not greater than the preset pressure, the gas fuel at the outlet of the gas storage tank 1 is introduced into the engine 100 after being regulated by the pressure increasing piece 3 and the pressure regulating component, so that the gas fuel at the outlet of the gas storage tank 1 can be continuously provided for the engine 100 after the pressure of the gas fuel is not greater than the preset pressure, and the actual endurance mileage of the vehicle is greatly improved.
In order to realize the communication between the outlet of the gas storage tank 1 and the pressurization member 3 or the communication with the pressure reduction assembly 5, as shown in fig. 1, the fuel supply system of the gas fuel engine of the present embodiment further includes a three-way valve 6, the three-way valve 6 is an electrically controlled three-way valve, the three-way valve 6 is disposed at the outlet of the gas storage tank 1, the three-way valve 6 is provided with a gas inlet, a first gas outlet and a second gas outlet, the gas inlet is communicated with the gas storage tank 1, the first gas outlet is communicated with the pressure reduction assembly 5, the second gas outlet is communicated with the pressurization member 3, when the first pressure is greater than the preset pressure, the gas inlet is communicated with the first gas outlet and is disconnected with the second gas outlet, when the first pressure is.
Specifically, as shown in fig. 1, the pressure reducing assembly 5 of the present embodiment includes a pressure reducing valve 51 and a first check valve 52 that are disposed in series, the pressure reducing valve 51 and the first check valve 52 being in communication, the first check valve 52 being a one-way valve. The pressure reducing valve 51 can reduce the pressure of the gas fuel having a relatively high pressure to a predetermined pressure value satisfying a condition in the engine 100, and the first check valve 52 can allow the gas fuel to flow out of the gas tank 1, sequentially pass through the pressure reducing valve 51 and the first check valve 52, and flow into the engine 100 without backflow. The number of the pressure reducing valves 51 in this embodiment is one, and of course, in other embodiments of the present invention, the number of the pressure reducing valves 51 may also be two or more, and these pressure reducing valves 51 are arranged in series or in parallel. Specifically, if the flow rate of the gaseous fuel is large but the pressure is higher than the preset pressure by a small amount, at least two pressure reducing valves 51 may be arranged in parallel; if the flow rate of the gas fuel is low but the pressure is higher than the preset pressure, at least two pressure reducing valves 51 may be arranged in series to reduce the pressure of the gas fuel; if the flow rate of the gaseous fuel is large and the pressure is higher than the preset pressure, at least two pressure reducing valves 51 may be divided into a plurality of pressure reducing valve 51 sets arranged in parallel, and each pressure reducing valve 51 set includes at least two pressure reducing valves 51 arranged in series.
As shown in fig. 1, the fuel supply system of the gaseous fuel engine of the present embodiment further includes a pressure-stabilizing gas rail 7, a nozzle 9 and a second pressure sensor 8, wherein one end of the pressure-stabilizing gas rail 7 is respectively communicated with the pressure-regulating component and the pressure-reducing component 5, and the other end is communicated with the engine 100 to introduce gaseous fuel into the engine 100. The second pressure sensor 8 is provided on the pressure-stabilizing gas rail 7 and detects that the pressure of the gaseous fuel in the pressure-stabilizing gas rail 7 is the second pressure. The nozzle 9 communicates with the pressure-stabilizing gas rail 7, and the nozzle 9 is capable of injecting gaseous fuel into the engine 100.
As shown in fig. 1, the pressure regulating assembly of the present embodiment includes a pressure regulating valve 411 and a second check valve 412, which are arranged in series, the pressure regulating valve 411 and the second check valve 412 are communicated, and the second check valve 412 is a one-way valve. The inlet of the pressure regulating valve 411 is communicated with the pressurizing member 3, the outlet is communicated with the second check valve 412, the pressure regulating member can regulate the pressure of the pressurized gas fuel, the second check valve 412 is arranged close to the pressure stabilizing gas rail 7, the second check valve 412 can prevent the gas fuel from flowing back into the pressurizing member 3 through the pressure stabilizing gas rail 7, and the gas fuel can flow into the pressure stabilizing gas rail 7 along the flowing direction of the pressurizing member 3, the pressure regulating valve 411 and the second check valve 412.
It is to be noted that, in general, the maximum pressure of the gaseous fuel that can be supplied from the gas tank 1 is higher than 20MPa, and the maximum pressures of the gaseous fuel that can be supplied from the conventional gas tank 1 are 35MPa and 70 MPa. The preset pressure of the embodiment is more than 0.4MPa, and when the nozzle 9 is an air passage injection nozzle, the preset pressure is preferably 0.4MPa to 1.5 MPa; if the nozzle 9 is a direct in-cylinder injection nozzle, the preset pressure is preferably 4MPa to 20 MPa.
Preferably, as shown in fig. 1, the fuel supply system of the gaseous fuel engine of the present embodiment further includes a controller 200, the controller 200 is electrically connected to the first pressure sensor 2, the pressure increasing member 3, the pressure regulating valve 411, the pressure reducing valve 51, the three-way valve 6 and the second pressure sensor 8, respectively, the controller 200 may be a centralized or distributed controller 200, for example, the controller 200 may be a single-chip microcomputer or a plurality of distributed single-chip microcomputers, and the single-chip microcomputers may run a control program to control the first pressure sensor 2, the pressure increasing member 3, the pressure regulating valve 411, the pressure reducing valve 51, the three-way valve 6 and the second pressure sensor 8 to implement their functions.
The specific process when the gas tank 1 supplies the gas fuel to the engine 100 is as follows:
when the gas fuel pressure regulator is just used, the pressure of the gas fuel at the outlet of the gas storage tank 1 is higher than the preset pressure, the controller 200 controls the gas inlet of the three-way valve 6 to be communicated with the first gas outlet, the controller 200 controls the pressure reducing valve 51 to be opened, the gas fuel flows from the gas storage tank 1 to the pressure reducing valve 51, the gas inlet is not communicated with the second gas outlet, the gas fuel is subjected to pressure reduction through the pressure reducing valve 51 and then enters the pressure-stabilizing gas rail 7 through the first check valve 52, and the gas fuel in the pressure-stabilizing gas rail 7 is injected into the engine 100 through the;
after a period of use, the pressure of the gas fuel at the outlet of the gas storage tank 1 is gradually reduced, when the gas pressure at the outlet of the gas storage tank 1 is not greater than the preset pressure, the controller 200 controls the pressure reducing valve 51 to close, and at the same time controls the air inlet of the three-way valve 6 to be communicated with the second air outlet, the controller 200 controls the pressurizing piece 3 and the pressure regulating valve 411 to open, the gas fuel flows from the gas storage tank 1 to the pressurizing piece 3, at this time, the air inlet is not communicated with the first air outlet, the gas fuel enters the pressure stabilizing gas rail 7 through the pressure regulating valve 411 and the second check valve 412 after being pressurized by the pressurizing piece 3, and the gas fuel in the pressure stabilizing.
The fuel supply system of the gas fuel engine of the embodiment takes the high-pressure gas storage tank 1 as a single gas source, but two gas pipelines are arranged between the gas storage tank 1 and the pressure-stabilizing gas rail 7, one of the passages is to depressurize the gaseous fuel when the pressure of the gaseous fuel in the gas tank 1 is high, and the other passage is to pressurize the gaseous fuel when the pressure of the gaseous fuel in the gas tank 1 is low, the supply path of the fuel gas is selected by the controller 200 controlling the three-way valve 6, the main control strategy is that the controller 200 controls the flow direction of the gas fuel of the three-way valve 6 according to the gas pressure at the outlet of the gas tank 1, therefore, when the pressure of the gas storage tank 1 changes from high to low along with the consumption of the gas fuel and changes in a large range, the second pressure of the pressure stabilizing gas rail 7 can be stabilized at the preset pressure, and the gas fuel can be supplied to the engine 100.
The present embodiment further provides a vehicle, as shown in fig. 1, including an engine 100 and the gaseous fuel engine fuel supply system according to the present embodiment, where the engine 100 is an engine 100 using gaseous fuel as power fuel, and the gaseous fuel engine fuel supply system is capable of supplying gaseous fuel with a pressure of a preset pressure to the engine 100. Specifically, the engine 100 of the present embodiment includes four cylinders, the number of the injection nozzles 9 is four, and one injection nozzle 9 is provided for each cylinder to inject the gaseous fuel in the surge tank 7 into the cylinder through the injection nozzle 9.
If the nozzle 9 is an air passage injection nozzle, the air passage injection nozzle is installed in an intake manifold of the gas fuel engine 100 to inject the gas fuel into an intake passage; if the injector 9 is a direct in-cylinder injector, the direct in-cylinder injector is mounted on the cylinder head of the engine 100 and injects the gaseous fuel directly into the combustion chamber of the engine 100.
The vehicle provided by the embodiment has the gas fuel engine fuel supply system, so that the actual driving range of the vehicle is increased.
Example two
The difference between the present embodiment and the first embodiment is that, as shown in fig. 2, the pressure regulating assembly of the present embodiment does not include the pressure regulating valve 411 and the second check valve 412 which are arranged in series as shown in fig. 1, but includes a pressure relief valve 421, a one-way valve 422 and a third check valve 423, the third check valve 423 is a one-way valve, the pressure relief valve 421 is electrically connected to the controller 200, one end of the pressure relief valve 421 can be communicated with the pressure-stabilizing gas rail 7, the other end of the pressure relief valve can be communicated with the one-way valve 422, the one-way valve 422 can enable the gas in the pressure-stabilizing gas rail 7 to flow to the inlet of the pressure-increasing member 3, the third check valve 423 is arranged at the outlet of the pressure. The added check valve 422 can prevent the gas fuel at the inlet of the pressurizing piece 3 from flowing to the pressure-stabilizing gas rail 7 through the check valve 422 and the pressure release valve 421, so that the gas fuel in the pressure-stabilizing gas rail 7 can flow to the inlet of the pressurizing piece 3 through the pressure release valve 421 and the check valve 422, and the one-way flow of the gas fuel is realized.
When the gas pressure at the outlet of the gas storage tank 1 is not greater than the preset pressure, the controller 200 controls the gas inlet of the control three-way valve 6 to be communicated with the second gas outlet, the controller 200 controls the pressurizing piece 3 to be opened, the gas fuel flows from the gas storage tank 1 to the pressurizing piece 3, at the moment, the gas inlet is not communicated with the first gas outlet, the gas fuel enters the pressure-stabilizing gas rail 7 through the third check valve 423 after being pressurized by the pressurizing piece 3, when the second pressure sensor 8 detects that the pressure of the gas fuel in the pressure-stabilizing gas rail 7 is higher than the preset pressure, the controller 200 controls the pressure release valve 421 to be opened, at the moment, the gas fuel in the pressure-stabilizing gas rail 7 flows to the inlet of the pressurizing piece 3 through the pressure release valve 421 and the check valve 422, the pressure in the pressure-stabilizing gas rail 7 is reduced, and the gas fuel; when the second pressure sensor 8 detects that the pressure of the gas fuel in the pressure stabilizing gas rail 7 is not higher than the preset pressure, the controller 200 controls the pressure release valve 421 to close, at this time, the gas fuel flows from the gas storage tank 1 to the pressure increasing member 3 and the third stop valve and then flows to the pressure stabilizing gas rail 7, and then the gas fuel in the pressure stabilizing gas rail 7 is injected into the engine 100 through the injection nozzle 9.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (10)
1. A gaseous fuelled engine fuel supply system, comprising:
a gas tank (1), the gas tank (1) being for containing gaseous fuel;
the first pressure sensor (2) is arranged at the outlet of the gas storage tank (1), and the first pressure sensor (2) detects that the pressure of the gas fuel at the outlet of the gas storage tank (1) is a first pressure;
the pressure increasing piece (3) can be communicated with the gas storage tank (1) and used for increasing the pressure of the gas fuel when the first pressure is not more than the preset pressure;
the inlet end of the pressure regulating assembly is communicated with the pressurizing piece (3) so as to regulate the pressure of the gas fuel to the preset pressure, and the outlet end of the pressure regulating assembly is communicated with an engine (100);
the pressure reducing assembly (5) is connected with the pressurizing piece (3) in parallel, when the first pressure is higher than the preset pressure, an inlet of the pressure reducing assembly (5) can be communicated with the gas storage tank (1) to reduce the pressure of the gas fuel to the preset pressure, and an outlet of the pressure reducing assembly (5) is communicated with the engine (100).
2. A gaseous fuel engine fuel supply system according to claim 1, the fuel supply system of the gas fuel engine also comprises a three-way valve (6), the three-way valve (6) is arranged at the outlet of the gas storage tank (1), the three-way valve (6) is provided with an air inlet, a first air outlet and a second air outlet, the air inlet is communicated with the air storage tank (1), the first air outlet is communicated with the decompression component (5), the second air outlet is communicated with the pressurization component (3), when the first pressure is higher than the preset pressure, the air inlet is communicated with the first air outlet and disconnected with the second air outlet, when the first pressure is not greater than the preset pressure, the air inlet is communicated with the second air outlet and disconnected with the first air outlet.
3. The gaseous fuelled engine fuel supply system according to claim 1, wherein the pressure reducing assembly (5) comprises a pressure reducing valve (51) and a first check valve (52) arranged in series, the pressure reducing valve (51) and the first check valve (52) being in communication.
4. The gaseous fuel engine fuel supply system of claim 1, wherein said pressure regulating assembly comprises a pressure regulating valve (411) and a second check valve (412) arranged in series, said pressure regulating valve (411) and said second check valve (412) being in communication.
5. The gaseous fuelled engine fuel supply system according to claim 1, further comprising a pressure stabilizing gas rail (7), one end of the pressure stabilizing gas rail (7) communicating with the pressure regulating assembly and the pressure reducing assembly (5), respectively, and the other end communicating with the engine (100) for feeding the gaseous fuel into the engine (100).
6. The gaseous fuel engine fuel supply system according to claim 5, characterized in that it further comprises a second pressure sensor (8), said second pressure sensor (8) being provided on said stabilizer gas rail (7) and the detected pressure of said gaseous fuel inside said stabilizer gas rail (7) being a second pressure.
7. The fuel supply system of the gaseous fuel engine according to claim 6, wherein the pressure regulating assembly comprises a pressure relief valve (421), a check valve (422) and a third check valve (423), one end of the pressure relief valve (421) can be communicated with the pressure-stabilizing gas rail (7), the other end can be communicated with the check valve (422), the check valve (422) can enable the gaseous fuel in the pressure-stabilizing gas rail (7) to flow to the inlet of the pressurizing member (3), the third check valve (423) is arranged at the outlet of the pressurizing member (3), and the pressure relief valve (421) is opened when the second pressure is higher than the preset pressure.
8. Gaseous fuelled engine fuel supply system according to claim 5, comprising an injector (9), said injector (9) being in communication with said rail (7), said injector (9) being capable of injecting said gaseous fuel into said engine (100).
9. A gaseous fuel engine fuel supply system according to claim 8, wherein said preset pressure is greater than 0.4 MPa.
10. A vehicle, characterized by comprising an engine (100) and a gaseous fuel engine fuel supply system according to any one of claims 1 to 9, capable of supplying said gaseous fuel at said preset pressure to said engine (100).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020576251.5U CN212130636U (en) | 2020-04-17 | 2020-04-17 | Fuel supply system of gas fuel engine and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020576251.5U CN212130636U (en) | 2020-04-17 | 2020-04-17 | Fuel supply system of gas fuel engine and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212130636U true CN212130636U (en) | 2020-12-11 |
Family
ID=73689747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020576251.5U Active CN212130636U (en) | 2020-04-17 | 2020-04-17 | Fuel supply system of gas fuel engine and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212130636U (en) |
-
2020
- 2020-04-17 CN CN202020576251.5U patent/CN212130636U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9856837B2 (en) | Apparatus and method for fuelling a flexible-fuel internal combustion engine | |
| USRE45413E1 (en) | Multi fuel co-injection system for internal combustion and turbine engines | |
| CA2538980C (en) | Method and apparatus for operating a dual fuel internal combustion engine | |
| CN113202638A (en) | Near-zero emission liquid ammonia-diesel dual-fuel supply system | |
| US10184440B2 (en) | Multi-fuel delivery system | |
| US9334812B2 (en) | Fuel supply control system for multi-fuel internal combustion engine | |
| US20120085322A1 (en) | Internal Combustion Engine as well as Retrofitting/Conversion Kit for such an Internal Combustion Engine | |
| CN111677609A (en) | Dual-fuel system and vehicle | |
| CN201359197Y (en) | Vehicle-bone gas-supply device conveying liquified natural gas by compressed natural gas | |
| US10414268B2 (en) | Gas tank arrangement for a dual fuel internal combustion engine | |
| CN101526055A (en) | Liquefied natural gas automobile fuel gas self-pressurization gas supply system and technical control | |
| CN114109628B (en) | In-cylinder direct-injection hydrogen internal combustion engine hydrogen boosting device based on liquid hydrogen and control method | |
| CN214196506U (en) | Double-injection system applied to engine and vehicle | |
| CN212130636U (en) | Fuel supply system of gas fuel engine and vehicle | |
| CN110402329B (en) | Fuel system for internal combustion engine | |
| CN112814808B (en) | Double-injection system of gas fuel engine and control method thereof | |
| CN214366432U (en) | Air supply system for pre-combustion chamber and engine with air supply system | |
| EP3913210A1 (en) | Gaseous fuel delivery system for an internal combustion engine | |
| CN115405852A (en) | Diversified gas station system based on natural gas and hydrogen | |
| CN210511036U (en) | Novel LNG vaporizer | |
| CN211058934U (en) | Low-high pressure oil supply system | |
| CN210068342U (en) | Gas fuel injection system | |
| CN216841973U (en) | High-pressure and low-pressure hydrogen double-injection system for hydrogen engine | |
| CN217080626U (en) | Methanol and hydrogen mixed fuel power system and vehicle | |
| US11933240B2 (en) | NOx mitigation strategy in methanol internal combustion engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |