Electronic control oil supply system of engine and engine

Abstract

The utility model provides an engine electronic control oil supply system which comprises a controller, an oil way module, a gas way module and a gas entrapment injection assembly, the oil way module comprises an oil tank, an electronic oil delivery pump in pipeline connection with the oil tank and an oil inlet connector in pipeline connection with the electronic oil delivery pump, and the electronic oil delivery pump is electrically connected with the controller. A temperature sensor and a pressure sensor are arranged on the oil inlet joint and are electrically connected with the controller; the air path module comprises an electronic air pump and an air inlet connector in pipeline connection with the electronic air pump, the electronic air pump is electrically connected with the controller, and a temperature and pressure sensor is arranged on the air inlet connector and electrically connected with the controller; the air-entrapped injection assembly is connected with the oil inlet connector and the air inlet connector through pipelines, and meanwhile the air-entrapped injection assembly is electrically connected with the controller. By arranging the whole set of electric control oil supply system, stable and controllable fuel oil and air inlet pressure can be provided, it is guaranteed that the oil-gas pressure difference in the air-entrained injection assembly is within the required value range, and the injection atomization effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of internal combustion engines, in particular to an engine electronic fuel supply system and an engine. Background Art

[0002] At present, aviation engines mainly use gasoline engines. Gasoline has certain risks during storage and transportation. Heavy oil has great advantages in terms of fuel safety and fuel supply convenience. Aviation heavy oil engines are an important trend for future development. However, aviation heavy oil has high viscosity and is difficult to atomize. After using heavy oil in the existing electronic fuel system, the oil pressure difference inside is often difficult to be stabilized within a reasonable range, resulting in the performance of the engine not being in the best state under various working conditions.

[0003] At present, the electronic fuel systems of many engines on the market adopt a mechanical air pump arranged on the engine body. The air pump is driven to work by the rotation of the crankshaft to provide compressed air. This solution has a complex structure. The engine casing needs to reserve installation holes, which increases the length of the crankshaft and the volume of the engine. The air supply pressure of the mechanical air pump is affected by the engine speed, resulting in unstable pressure of the compressed gas, which affects the starting and performance output of the engine. At the same time, the rotational speed of aviation engines is generally high, and strict requirements are imposed on the reliability of the mechanical air pump. The internal rollers are prone to wear after long-term use. There are also those that directly use a carburetor to supply heavy oil, with poor fuel metering accuracy. The fuel quantity cannot be corrected according to changes in environmental conditions, resulting in poor engine performance and high fuel consumption. At the same time, scavenging during the engine operation will cause loss of part of the fuel, reducing the fuel utilization rate of the engine and the endurance of the aircraft.

[0004] Therefore, it is necessary to provide an engine electronic fuel supply system and an engine to overcome the defects existing above. Summary of the Utility Model

[0005] The purpose of the utility model is to provide an engine electronic fuel supply system and an engine.

[0006] According to one aspect of the utility model, an engine electronic fuel supply system is provided, including:

[0007] A controller,

[0008] An oil circuit module, the oil circuit module includes a fuel tank, an electronic fuel pump connected to the fuel tank through a pipeline, and an oil inlet connector connected to the electronic fuel pump through a pipeline. The electronic fuel pump is electrically connected to the controller. A temperature sensor and a pressure sensor are provided on the oil inlet connector, and both the temperature sensor and the pressure sensor are electrically connected to the controller;

[0009] An air circuit module, the air circuit module includes an electronic air pump and an air inlet joint connected to the electronic air pump through a pipeline. The electronic air pump is electrically connected to a controller. A temperature and pressure sensor is provided on the air inlet joint, and the temperature and pressure sensor is electrically connected to the controller;

[0010] An air injection assembly, the air injection assembly is connected to both the fuel inlet joint and the air inlet joint through pipelines, and at the same time the air injection assembly is electrically connected to the controller.

[0011] Preferably, a fuel filter is connected in series on the pipeline between the electronic fuel pump and the fuel inlet joint.

[0012] Preferably, the air injection assembly is directly connected to the fuel tank through a return oil pipeline.

[0013] Preferably, an air inlet check valve is provided between the air inlet joint and the air injection assembly.

[0014] Preferably, a pressure regulating valve is further included. The pressure regulating valve is integrated on the air injection assembly. The oil inlet of the pressure regulating valve is connected to the fuel inlet joint through a pipeline. The oil return port of the pressure regulating valve is connected to the fuel tank through a pipeline. The air inlet of the pressure regulating valve is connected to the air inlet joint through a pipeline.

[0015] Preferably, the air injection assembly includes a fuel injector, an oil-gas mixing chamber, and a pre-mixed injector. The inlet of the fuel injector is connected to the oil outlet of the pressure regulating valve. Two inlets of the oil-gas mixing chamber are respectively connected to the outlet of the fuel injector and the air outlet of the pressure regulating valve. The inlet of the pre-mixed injector is connected to the outlet of the oil-gas mixing chamber. The outlet of the pre-mixed injector is connected to the combustion chamber of the engine.

[0016] Preferably, the air injection assembly further includes a first oil chamber connected to the inlet of the fuel injector and a first air chamber connected to the inlet of the oil-gas mixing chamber. A pressure regulating valve is provided between the first oil chamber and the first air chamber. The first oil chamber, the first air chamber, and the pressure regulating valve are all provided in the housing of the air injection assembly.

[0017] According to another aspect of the present invention, an engine is provided, including the above-mentioned engine electronic fuel supply system

[0018] Compared with the prior art, the engine electronic fuel supply system and the engine provided by the present invention have the following beneficial effects:

[0019] Due to the adoption of the above technical solution, the utility model has the advantages of simple structure, ingenious design and low cost. The whole electronic control fuel supply system can provide stable and controllable fuel and intake air pressures, ensure that the oil-gas pressure difference in the air injection component is within the required value range, and improve the injection atomization effect; it can perform real-time regulation and correction on fuel and intake air according to the data provided by the pressure sensor, temperature sensor and temperature-pressure sensor to meet the requirements under different environments and working conditions; the air injection component integrates a pressure regulating valve, which can further stabilize the fuel pressure in the oil-gas mixing chamber, relieve pressure when the pressure is too high, and ensure a reasonable and stable oil-gas pressure difference. Brief Description of the Drawings

[0020] The following further details the present utility model in conjunction with the drawings and specific embodiments:

[0021] Figure 1 is a schematic diagram of the engine electronic control fuel supply system of the present utility model;

[0022] Figure 2 is a schematic diagram of the air injection component of the present utility model.

[0023] Wherein, 1. Controller, 2. Oil circuit module, 21. Fuel tank, 22. Electric fuel pump, 23. Fuel filter, 24. Inlet joint, 25. Temperature sensor, 26. Pressure sensor, 3. Air circuit module, 31. Electric air pump, 32. Air inlet joint, 33. Temperature-pressure sensor, 34. Air inlet check valve, 4. Pressure regulating valve, 5. Air injection component, 51. Fuel injector, 52. Oil-gas mixing chamber, 53. Premixed injector, 54. First oil chamber, 55. First air chamber, 6. Engine, 61. Combustion chamber. Specific Embodiments

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following briefly introduces the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0025] For the sake of simplicity of the drawings, only the parts related to the present utility model are schematically shown in each drawing, and they do not represent their actual structures as products. Additionally, for the sake of simplicity and ease of understanding of the drawings, in some drawings, components with the same structure or function are only schematically shown for one of them, or only one of them is labeled. In this article, "one" not only means "only this one", but also can mean "more than one" situation.

[0026] It should also be further understood that the term "and / or" used in the specification and appended claims of this application refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0027] In this text, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "linked" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0028] In addition, in the description of this application, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0029] To more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the specific implementation manners of the present utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to these drawings, and other implementation manners can also be obtained.

[0030] See Figure 1 and Figure 2 , this embodiment discloses an engine electronic fuel supply system, which includes a controller 1, an oil circuit module 2, an air circuit module 3, and an air injection assembly 5. The oil circuit module 2 includes a fuel tank 21, an electronic fuel pump 22, a fuel filter 23, and an oil inlet joint 24. The air circuit module 3 includes an electronic air pump 31 and an air inlet joint 32. A pressure regulating valve 4 is provided between the oil circuit module 2 and the air circuit module 3.

[0031] The electronic fuel pump 22 and the fuel tank 21 are arranged inside the aircraft to reduce the influence of the external environmental conditions and engine vibration. The fuel tank 21, the electronic fuel pump 22, the fuel filter 23, the oil inlet joint 24, and the air injection assembly 5 are sequentially connected through pipelines and are connected to the pipeline of the electronic fuel pump 22. At the same time, the electronic fuel pump 22 is electrically connected to the controller 1. A temperature sensor 25 and a pressure sensor 26 are provided on the oil inlet joint 24, and both the temperature sensor 25 and the pressure sensor 26 are electrically connected to the controller 1.

[0032] The electronic air pump 31, the air intake joint 32, and the air injection assembly 5 are sequentially connected through pipelines. At the same time, the electronic air pump 31 is electrically connected to the controller 1. A temperature and pressure sensor 33 is provided on the air intake joint 32, and the temperature and pressure sensor 33 is electrically connected to the controller 1. An intake check valve 34 is provided between the air intake joint 32 and the air injection assembly 5. Specifically, an intake check valve 34 is provided on the pipeline between the air injection assembly 5 and the air intake joint 32. The intake check valve 34 is arranged at the air inlet of the air injection assembly 5 and is connected to the air intake joint 32 through a pipeline to prevent the compressed air from flowing backward and affecting the internal air pressure of the air injection assembly 5, ensuring the auxiliary atomization of fuel and the air-fuel mixing effect.

[0033] The air injection assembly 5 is arranged at the cylinder head of the engine 6. The air injection assembly 5 is connected to the fuel inlet joint 24 and the air intake joint 32 through pipelines. At the same time, the air injection assembly 5 is electrically connected to the controller 1. The air injection assembly 5 is directly connected to the fuel tank 21 through a return oil pipeline. The pressure regulating valve 4 is integrated on the air injection assembly 5. The oil inlet of the pressure regulating valve 4 is connected to the fuel inlet joint 24 through a pipeline. The oil return port of the pressure regulating valve 4 is connected to the fuel tank 21 through a pipeline. The air inlet of the pressure regulating valve 4 is connected to the air intake joint 32 through a pipeline.

[0034] The air injection assembly 5 includes a fuel injector 51, an air-fuel mixing chamber 52, and a pre-mixed injector 53. The inlet of the fuel injector 51 is connected to the oil outlet of the pressure regulating valve 4. Two inlets of the air-fuel mixing chamber 52 are respectively connected to the outlet of the fuel injector 51 and the air outlet of the pressure regulating valve 4. The inlet of the pre-mixed injector 53 is connected to the outlet of the air-fuel mixing chamber 52. The outlet of the pre-mixed injector 53 (which is an atomizing nozzle) is connected to the combustion chamber 61 of the engine 6.

[0035] In this embodiment, a first oil chamber 54 and a first air chamber 55 are further provided in the housing of the air injection assembly 5. The first oil chamber 54 is connected to the inlet of the fuel injector 51. The first air chamber 55 is connected to the inlet of the air-fuel mixing chamber 52. The pressure regulating valve 4 connects the first oil chamber 54 and the first air chamber 55. The first oil chamber 54, the first air chamber 55, and the pressure regulating valve 4 are all arranged in the housing of the air injection assembly 5.

[0036] Control method of the system:

[0037] Oil circuit: Energize the electronic fuel supply system. According to the instruction of the controller 1, the fuel in the fuel tank 21 is transported through the pipeline to the fuel filter 23 under the action of the electronic fuel pump 22 at a certain pressure, and then transported to the fuel inlet joint 24 by the fuel filter 23, and then transported to the air injection assembly 5 through the fuel inlet joint 24;

[0038] The temperature sensor 25 and pressure sensor 26 on the fuel inlet joint 24 monitor the oil temperature and oil pressure in the oil circuit in real time. After feeding back to the controller 1, the controller 1 determines whether adjustment is needed. If adjustment is needed, an instruction is sent to the electronic fuel pump 22, and the electronic fuel pump 22 makes adjustments after receiving the instruction.

[0039] The controller 1 adjusts the fuel pumping pressure and flow rate of the electronic fuel pump 22, and corrects the fuel injection quantity, injection timing of the fuel injector 51, and injection timing of the pre-mixed injector 53 according to the oil temperature and oil pressure, so as to ensure the best power performance of the engine 6 under various working conditions.

[0040] Air circuit: According to the instruction of the controller 1, the electronic air pump 31 transports air with a certain pressure to the air inlet joint 32 through a pipeline, and then the air inlet joint 32 transports it to the air injection assembly 5;

[0041] The temperature and pressure sensor 33 on the air inlet joint 32 monitors the temperature and pressure of the compressed air in the air circuit in real time. After feeding back to the controller 1, the controller 1 determines whether adjustment is needed. If adjustment is needed, an instruction is sent to the electronic air pump 31, and the electronic air pump 31 makes adjustments after receiving the instruction.

[0042] The controller 1 adjusts the operating speed of the electronic air pump 1 according to the operating conditions of the engine to ensure the stability of the air pressure in the electronically controlled fuel supply system.

[0043] The pressure regulating valve 4 controls the fuel pressure and air pressure entering the air injection assembly 5 within a preset range. When the fuel pressure is too high, the oil return port of the pressure regulating valve 4 opens, and the pressure is relieved and the oil returns to the fuel tank 21. On the basis that the electronic fuel pump 22 and the electronic air pump 31 can perform feedback adjustment, the fuel injection pressure of the air injection assembly 5 is further stabilized.

[0044] This embodiment also discloses an engine, including the above-mentioned electronically controlled fuel supply system for the engine.

[0045] It is obvious to those skilled in the art that various modifications and variations can be made to the above exemplary embodiments of the present invention without departing from the spirit and scope of the present invention. Therefore, it is intended that the present invention cover modifications and variations of the present invention that fall within the scope of the appended claims and their equivalent technical solutions.

Claims

1. An engine electronically controlled fuel supply system, characterized in that, Comprising: A controller, An oil circuit module, the oil circuit module includes a fuel tank, an electronic fuel pump connected to the fuel tank through a pipeline, and an inlet joint connected to the electronic fuel pump through a pipeline. The electronic fuel pump is electrically connected to the controller. A temperature sensor and a pressure sensor are provided on the inlet joint, and both the temperature sensor and the pressure sensor are electrically connected to the controller; A gas circuit module, the gas circuit module includes an electronic air pump and an inlet joint connected to the electronic air pump through a pipeline. The electronic air pump is electrically connected to the controller. A temperature and pressure sensor is provided on the inlet joint, and the temperature and pressure sensor is electrically connected to the controller; An air-injected fuel injection assembly, the air-injected fuel injection assembly is connected to the inlet joint and the inlet joint through pipelines, and at the same time the air-injected fuel injection assembly is electrically connected to the controller.

2. The engine electronic control fuel supply system according to claim 1, wherein A fuel filter is connected in series on the pipeline between the electronic fuel pump and the inlet joint.

3. The engine electronic control fuel supply system according to claim 2, characterized in that, The air-injected fuel injection assembly is directly connected to the fuel tank through a return oil pipeline.

4. The engine electronic control fuel supply system according to claim 3, characterized in that, An intake check valve is provided between the inlet joint and the air-injected fuel injection assembly.

5. The engine electronic control fuel supply system according to claim 4, characterized in that It further includes a pressure regulating valve, the pressure regulating valve is integrated on the air-injected fuel injection assembly. The oil inlet of the pressure regulating valve is connected to the inlet joint through a pipeline, the oil return port of the pressure regulating valve is connected to the fuel tank through a pipeline, and the air inlet of the pressure regulating valve is connected to the inlet joint through a pipeline.

6. The engine electronic control fuel supply system according to claim 5, characterized in that, The air-injected fuel injection assembly includes a fuel injector, an oil-gas mixing chamber, and a pre-mixed injector. The inlet of the fuel injector is connected to the oil outlet of the pressure regulating valve. Two inlets of the oil-gas mixing chamber are respectively connected to the outlet of the fuel injector and the air outlet of the pressure regulating valve. The inlet of the pre-mixed injector is connected to the outlet of the oil-gas mixing chamber, and the outlet of the pre-mixed injector is connected to the combustion chamber of the engine.

7. The engine electronic control fuel supply system according to claim 6, characterized in that, The air-injected fuel injection assembly further includes a first oil chamber connected to the inlet of the fuel injector and a first air chamber connected to the inlet of the oil-gas mixing chamber. A pressure regulating valve is provided between the first oil chamber and the first air chamber. The first oil chamber, the first air chamber, and the pressure regulating valve are all provided in the housing of the air-injected fuel injection assembly.

8. An engine, characterized in that, An engine electronic fuel supply system according to any one of claims 1 to 6.

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