Oil rail assembly and vehicle

Abstract

The utility model discloses an oil rail assembly and a vehicle, and relates to the technical field of oil rails. The heating assembly comprises an electromagnetic heating body and an electromagnetic coil, the electromagnetic heating body is arranged on the outer portion of the oil rail shell in a sleeving mode, the electromagnetic coil is wound around the outer portion of the electromagnetic heating body, and the oil rail shell is integrally wrapped by the electromagnetic heating body; and the insulation heat preservation layer is arranged between the electromagnetic coil and the electromagnetic heating body. According to the technical scheme, the technical problem that an existing fuel rail is poor in fuel heating effect is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil rails, in particular to an oil rail assembly and a vehicle. Background Art

[0002] The fuel rail is a high-pressure accumulator or oil rail, which is the oil pipeline in front of the injector that supplies fuel to the cylinders of the engine. For methanol engines, cold start is difficult in low temperature environments. To this end, it is necessary to preheat the methanol fuel in the oil rail to increase the temperature of the methanol fuel so that the mixture of methanol and air is easier to ignite. However, the heating effect of the existing fuel rail fuel is not ideal. Utility Model Content

[0003] The main purpose of the utility model is to provide a fuel rail assembly and a vehicle, aiming to solve the technical problem that the heating effect of the existing fuel rail fuel is not good.

[0004] To achieve the above objectives, the present invention provides a fuel rail assembly, which includes:

[0005] Fuel rail housing;

[0006] a heating assembly, disposed outside the fuel rail housing and used for heating the fuel rail housing; and

[0007] The insulating layer is connected to the heating component to slow down the heat loss of the heating component.

[0008] In one embodiment, the heating assembly includes an electromagnetic heating body sleeved on the outside of the fuel rail housing and an electromagnetic coil wound around the outside of the electromagnetic heating body, and the insulating layer is arranged between the electromagnetic coil and the electromagnetic heating body.

[0009] In one embodiment, the fuel rail assembly further includes an electromagnetic shielding layer, and the electromagnetic shielding layer is sleeved on the outside of the electromagnetic coil.

[0010] In one embodiment, the electromagnetic shielding layer is made of metal material, and the electromagnetic coil is not in contact with the electromagnetic shielding layer.

[0011] In one embodiment, the electromagnetic shielding layer is provided with a threading hole, and the end of the electromagnetic coil extends to the outside of the electromagnetic shielding layer through the threading hole.

[0012] In one embodiment, the fuel rail assembly further includes a fuel injection component, and the fuel injection component penetrates the electromagnetic heating body and is connected to the fuel rail housing.

[0013] In one embodiment, the fuel rail assembly further includes a pressure detection component, which passes through the electromagnetic heating body and is connected to the fuel rail housing to detect the fuel pressure in the fuel rail housing.

[0014] In one embodiment, the fuel rail assembly further includes a temperature detection component, which passes through the electromagnetic heating body and is connected to the fuel rail housing to detect the temperature of the fuel in the fuel rail housing.

[0015] In one embodiment, the fuel rail assembly further includes a fuel connector, wherein the fuel connector is connected to the fuel rail housing to deliver fuel to the fuel rail housing.

[0016] In one embodiment, the fuel in the fuel rail housing is methanol.

[0017] To achieve the above objectives, an embodiment of the present utility model provides a vehicle, which includes the fuel rail assembly described above.

[0018] Compared with the prior art, in a technical solution proposed by the utility model, a fuel rail housing with a fuel channel is provided, and fuel can be delivered to the cylinder through the fuel channel. The heating component is arranged outside the fuel rail housing, and the heat generated by the heating component is conducted to the fuel channel through the fuel rail housing, thereby heating the fuel, so that the fuel is quickly heated, the atomization ability of the fuel is improved, and it is conducive to the ignition of the combustible mixture formed by the fuel and the air. At the same time, the heating component is completely isolated from the fuel in the fuel channel, and the fuel is heated by the contact heat conduction between the heating component and the outer wall of the fuel rail housing, which can effectively improve safety. In addition, compared with the traditional heating method, electromagnetic heating has higher heating efficiency, is more energy-saving and environmentally friendly, and does not generate open flames during the working process, which effectively improves safety. At the same time, the electromagnetic heating body is entirely coated with the fuel rail housing, which can improve the uniformity of heating the fuel rail housing, and then improve the uniformity of fuel heating. Moreover, by providing an insulating and heat-insulating layer, the loss of heat generated by the heating component can be reduced, so that more heat is conducted to the fuel channel to heat the fuel, and the effective utilization rate of the heat of the heating component is improved, thereby improving the heating effect on the fuel. At the same time, the insulating layer can also play the role of electrical insulation, which can insulate the electromagnetic coil from the electromagnetic heating element, prevent the hidden danger of leakage under abnormal conditions, prevent the current from being transmitted to the oil rail housing and causing electrochemical corrosion or fuel combustion, etc., thereby improving safety of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0020] Figure 1 This is a structural schematic diagram of an embodiment of the fuel rail assembly of the utility model;

[0021] Description of Figure Numbers:

[0022] 10. Fuel rail housing; 20. Heating assembly; 21. Electromagnetic heating body; 22. Electromagnetic coil; 30. Insulation layer; 40. Electromagnetic shielding layer; 50. Fuel injection assembly; 51. Fuel injection cup; 52. Fuel injector; 60. Pressure detection assembly; 61. Pressure detection cup; 62. Pressure sensor; 70. Temperature detection assembly; 71. Temperature detection cup; 72. Temperature sensor; 80. Fuel connector.

[0023] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the embodiments of the utility model.

[0025] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0026] In addition, in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the embodiments of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0027] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0028] In addition, the technical solutions between the various embodiments of the present utility model can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the embodiments of the present utility model.

[0029] For methanol engines, cold start is difficult in low temperature environments. Therefore, it is necessary to preheat the methanol fuel in the fuel rail to increase the temperature of the methanol fuel so that the mixture of methanol and air is easier to ignite. However, when heating the fuel in the existing fuel rail, the heating structure is directly used to heat the fuel in the fuel rail. The heat loss of the heating structure is large, and the effective utilization rate of the heat is low, which is not conducive to the heating of the fuel in the fuel rail.

[0030] In view of this, an embodiment of the utility model provides a fuel rail assembly and a vehicle, which can reduce the loss of heat generated by the heating component by setting an insulating and thermal insulation layer, so that more heat is conducted to the fuel channel to heat the fuel, thereby improving the effective utilization rate of the heat of the heating component and further improving the heating effect on the fuel.

[0031] It should be noted that the fuel rail assembly in this embodiment can be applicable to diesel or gasoline engines, and is particularly applicable to methanol engines.

[0032] In order to better understand the above technical solution, the above technical solution is described in detail below with reference to the accompanying drawings.

[0033] like Figure 1 As shown, the embodiment of the utility model provides a fuel rail assembly, and the fuel rail assembly includes:

[0034] Fuel rail housing 10;

[0035] A heating assembly 20, the heating assembly 20 includes an electromagnetic heating body 21 sleeved on the outside of the fuel rail housing 10 and an electromagnetic coil 22 wound on the outside of the electromagnetic heating body 21, and the electromagnetic heating body 21 entirely covers the fuel rail housing 10; and

[0036] The insulating and heat-preserving layer 30 is arranged between the electromagnetic coil 22 and the electromagnetic heating body 21 .

[0037] In the technical solution adopted in this embodiment, by setting up a fuel rail housing 10 with a fuel channel, fuel can be delivered to the cylinder through the fuel channel. The heating component 20 is set outside the fuel rail housing 10, and the heat generated by the heating component 20 is conducted to the fuel channel through the fuel rail housing 10, thereby heating the fuel, allowing the fuel to heat up quickly, improving the atomization ability of the fuel, and facilitating the ignition of the combustible mixture formed by the fuel and air. At the same time, the heating component 20 is completely isolated from the fuel in the fuel channel, and the fuel is heated by heat conduction through the contact between the heating component 20 and the outer wall of the fuel rail housing 10, which can effectively improve safety. Moreover, by setting up the insulating and heat-preserving layer 30, the loss of heat generated by the heating component 20 can be reduced, so that more heat is conducted to the fuel channel to heat the fuel, thereby improving the effective utilization rate of the heat of the heating component 20, and thus improving the heating effect on the fuel.

[0038] Specifically, the fuel rail assembly includes a fuel rail housing 10, a heating assembly 20, and an insulating layer 30. The fuel rail housing 10 has a fuel channel inside, which can transport fuels such as diesel, gasoline or methanol to the engine. Optionally, the fuel rail housing 10 is made of metal materials, such as stainless steel, nickel-based alloy, etc., which can effectively reduce the corrosion of methanol.

[0039] The heating assembly 20 is used to heat the fuel in the fuel rail housing 10, that is, the fuel in the fuel channel is preheated by the heating assembly 20 and then transported. The heating assembly 20 is arranged outside the fuel rail housing 10 and in contact with the fuel rail housing 10, so that the heat generated by the heating assembly 20 can be conducted through the fuel rail housing 10 to the fuel channel to heat the fuel, thereby isolating the heating assembly 20 and the fuel, and providing higher safety. As an optional method, the heating assembly 20 can be a heating wire.

[0040] Reference Figure 1The heating assembly 20 includes an electromagnetic heating body 21 sleeved on the outside of the fuel rail housing 10 and an electromagnetic coil 22 wound on the outside of the electromagnetic heating body 21, and an insulating layer 30 is arranged between the electromagnetic coil 22 and the electromagnetic heating body 21. Specifically, the electromagnetic heating body 21 is arranged on the outside of the fuel rail housing 10 and is in direct contact with the fuel rail housing 10 to enable heat conduction. Optionally, the electromagnetic heating body 21 is sleeved on the outside of the fuel rail housing 10. It can be understood that the electromagnetic heating body 21 is a pipeline structure that covers the fuel rail housing 10 as a whole, which can effectively improve the uniformity of heating the fuel rail housing 10, thereby improving the uniformity of fuel heating. The electromagnetic coil 22 is wound around the electromagnetic heating body 21, and the two ends of the electromagnetic coil 22 are connected to the positive and negative poles of the controller. When working, the controller outputs high-frequency alternating current to the electromagnetic coil 22, so that a high-frequency alternating magnetic field is generated around the electromagnetic coil 22. Since the electromagnetic heating body 21 continuously cuts the magnetic flux lines, it generates eddy currents. The eddy currents cause the free electrons in the electromagnetic heating body 21 to continuously collide and rub with atoms, thereby increasing the temperature of the electromagnetic heating body 21. The temperature of the electromagnetic heating body 21 is transmitted to the fuel channel through the oil rail housing 10 to heat the fuel, thereby achieving the purpose of heating the fuel. It can be understood that the heating component 20 in this embodiment is an electromagnetic heating method, which has higher heating efficiency than traditional heating equipment, is more energy-saving and environmentally friendly, and does not generate open flames during operation, further improving safety.

[0041] The insulating layer 30 is connected to the heating assembly 20, which can prevent the heat of the heating assembly 20 from being conducted away from the fuel rail housing 10, so that the heat of the heating assembly 20 is conducted more toward the fuel channel, reducing heat loss and improving the heating efficiency of the fuel. As an optional method, the insulating layer 30 can be insulation wool such as rock wool, glass wool, etc., which has good thermal insulation performance and can also play the role of electrical insulation between the electromagnetic heating body 21 and the electromagnetic coil 22, preventing the hidden danger of leakage and further improving the safety of electricity use.

[0042] In one embodiment of the present invention, referring to Figure 1 The fuel rail assembly further includes an electromagnetic shielding layer 40, which is sleeved on the outside of the electromagnetic coil 22. In order to prevent the magnetic field generated by the electromagnetic coil 22 when powered on from causing electromagnetic interference to other electronic devices, the electromagnetic shielding layer 40 is provided to isolate the magnetic field generated by the electromagnetic coil 22 when powered on from other electronic devices, thereby preventing electromagnetic interference to other electronic devices.

[0043] In an embodiment of the present invention, the electromagnetic shielding layer 40 is made of metal material, and the electromagnetic coil 22 is not in contact with the electromagnetic shielding layer 40 .

[0044] It is understandable that the electromagnetic shielding layer 40 is usually made of aluminum foil or glass fiber, etc., and may generate a conductive phenomenon when in direct contact with a conductive material or after being subjected to electromagnetic radiation. This time, in one embodiment, the electromagnetic coil 22 is not in contact with the electromagnetic shielding layer 40, thereby preventing the current on the electromagnetic coil 22 from flowing to the electromagnetic shielding layer 40, thereby ensuring the magnetic field effect formed by the electromagnetic coil 22 being energized.

[0045] In one embodiment of the utility model, the electromagnetic shielding layer 40 is provided with a threading hole, and the end of the electromagnetic coil 22 extends to the outside of the electromagnetic shielding layer 40 through the threading hole. In order to facilitate the end of the electromagnetic coil 22 to be led out to the outside of the electromagnetic shielding layer 40, a threading hole is provided in the electromagnetic shielding layer 40. The end of the electromagnetic coil 22 is led out from the threading hole, which is convenient for connecting with the controller to pass current.

[0046] In one embodiment of the present invention, referring to Figure 1 The fuel rail assembly also includes a fuel injection assembly 50, which penetrates the electromagnetic shielding layer 40 and the electromagnetic heating body 21 and is connected to the fuel rail housing 10, wherein the fuel injection assembly 50 is fixedly connected to the electromagnetic shielding layer 40. In order to facilitate the fuel rail housing 10 to inject fuel into the engine or cylinder, a fuel injection assembly 50 is provided, which penetrates the electromagnetic shielding layer 40 and is connected to the fuel rail housing 10, and is communicated with the fuel channel, and can inject fuel according to the instructions of the engine ECU. Optionally, the fuel injection assembly 50 is welded to the fuel rail housing 10, and the fuel injection assembly 50, the electromagnetic shielding layer 40 and the heating assembly 20 are connected as a whole by welding. In one embodiment, the fuel injection assembly 50 includes a fuel injection cup 51 and a fuel injector 52 connected to the fuel injection cup 51, and the fuel injection cup 51 is connected to the fuel rail housing 10 and is communicated with the fuel channel, providing a mounting point for the fuel injector 52, and serving as a bridge for the fuel injector 52 to contact the fuel in the fuel channel. Optionally, the fuel injection cup 51 is welded and fixed to the fuel rail housing 10. The fuel injector 52 is connected to the fuel injection cup 51, and can spray the fuel in the fuel channel to the intake manifold or the cylinder. As an optional method, the fuel injector 52 and the fuel injection cup 51 are detachably connected, such as by snap connection or bolt connection, which can facilitate the maintenance and replacement of the fuel injector 52.

[0047] In one embodiment of the present invention, referring to Figure 1The fuel rail assembly also includes a pressure detection component 60. The pressure detection component 60 penetrates the electromagnetic shielding layer 40 and the electromagnetic heating body 21 and is connected to the fuel rail housing 10 to detect the fuel pressure in the fuel rail housing 10. The pressure detection component 60 is fixedly connected to the electromagnetic shielding layer 40. It can be understood that the pressure detection component 60 can detect the fuel pressure in the fuel channel and provide the engine ECU with fuel injection calibration data. In one embodiment, the pressure detection component 60 includes a pressure detection oil cup 61 and a pressure sensor 62 connected to the pressure detection oil cup 61. The pressure detection oil cup 61 is connected to the fuel rail housing 10 and communicates with the fuel channel, providing a mounting point for the pressure sensor 62 and serving as a bridge for the pressure sensor 62 to contact the fuel in the fuel channel. The pressure sensor 62 detects the fuel pressure in the fuel channel and provides the engine ECU with fuel injection calibration data.

[0048] And / or, the fuel rail assembly also includes a temperature detection component 70, which penetrates the electromagnetic shielding layer 40 and the electromagnetic heating body 21 and is connected to the fuel rail housing 10 to detect the fuel temperature in the fuel rail housing 10, and the temperature detection component 70 is fixedly connected to the electromagnetic shielding layer 40. It can be understood that the fuel temperature in the fuel channel can be monitored by the temperature detection component 70. In one embodiment, the temperature detection component 70 includes a temperature detection oil cup 71 and a temperature sensor 72 connected to the temperature detection oil cup 71. The temperature detection oil cup 71 is connected to the fuel rail housing 10 and communicates with the fuel channel, providing a mounting point for the temperature sensor 72 and serving as a bridge for the temperature sensor 72 to contact the fuel in the fuel channel. The temperature sensor 72 is used to monitor the fuel temperature in the fuel channel and provide a fuel injection calibration signal to the engine ECU. At the same time, the engine EUC determines whether the heated fuel reaches the set temperature based on the current temperature. When the set temperature is reached, the engine ECU controls the heating component 20 to stop working.

[0049] In one embodiment of the present invention, referring to Figure 1 The fuel rail assembly further includes a fuel connector 80, which penetrates the electromagnetic shielding layer 40 and is connected to the fuel rail housing 10 to deliver fuel to the fuel rail housing 10. It can be understood that the fuel connector 80 connects the fuel rail housing 10 and the fuel supply system, and can deliver the fuel of the fuel supply system to the fuel rail housing 10. As an optional method, the fuel connector 80 and the fuel rail housing 10 are fixed by welding.

[0050] In one embodiment of the utility model, the fuel inside the oil rail housing 10 is methanol. Due to the low vapor pressure and high latent heat of vaporization of methanol fuel, cold starting of a spark-ignition methanol engine at low temperature is much more difficult than using a spark-ignition engine such as gasoline, LPG, and gasoline / methanol mixed fuel. It may even fail to ignite and start, resulting in excessive HC emissions from the methanol engine, affecting the promotion and application of all-methanol vehicles. Therefore, the oil rail assembly proposed in this embodiment is particularly suitable for methanol vehicles. Before the vehicle is started, the methanol fuel in the fuel channel is preheated to quickly increase the temperature of the methanol fuel, improve the atomization effect of the methanol fuel, and make the mixed gas of the methanol fuel and air easier to ignite, thereby effectively solving the problem of difficulty in cold starting of methanol vehicles at low temperatures.

[0051] To achieve the above purpose, the embodiment of the utility model provides a vehicle, which includes the fuel rail assembly described above. Specifically, the specific structure of the fuel rail assembly refers to the above embodiment. Since the vehicle adopts all the technical solutions of the above embodiment, it at least has all the beneficial effects brought by the technical solutions of the above embodiment, which will not be repeated here.

[0052] The above description is only an exemplary implementation of the present invention, and does not limit the patent scope of the embodiments of the present invention. All equivalent structural changes made by using the description and drawings of the embodiments of the present invention under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the embodiments of the present invention.

Claims

1. A fuel rail assembly, characterized in that: The fuel rail assembly comprises: Fuel rail housing; A heating assembly, the heating assembly comprising an electromagnetic heating body sleeved on the outside of the fuel rail housing and an electromagnetic coil wound around the outside of the electromagnetic heating body, the electromagnetic heating body entirely covering the fuel rail housing; and An insulating and heat-preserving layer is arranged between the electromagnetic coil and the electromagnetic heating body.

2. The fuel rail assembly according to claim 1, characterized in that: The oil rail assembly further includes an electromagnetic shielding layer, and the electromagnetic shielding layer is sleeved on the outside of the electromagnetic coil.

3. The fuel rail assembly according to claim 2, characterized in that: The electromagnetic shielding layer is made of metal material, and the electromagnetic coil is not in contact with the electromagnetic shielding layer.

4. The fuel rail assembly according to claim 3, characterized in that: The electromagnetic shielding layer is provided with a threading hole, and the end of the electromagnetic coil extends to the outside of the electromagnetic shielding layer through the threading hole.

5. The fuel rail assembly according to any one of claims 1 to 4, characterized in that: The oil rail assembly also includes an oil injection component, which penetrates the electromagnetic heating body and is connected to the oil rail housing.

6. The fuel rail assembly according to any one of claims 1 to 4, characterized in that: The fuel rail assembly further includes a pressure detection component, which penetrates through the electromagnetic heating body and is connected to the fuel rail housing to detect the fuel pressure in the fuel rail housing.

7. The fuel rail assembly according to any one of claims 1 to 4, characterized in that: The fuel rail assembly further includes a temperature detection component, which penetrates through the electromagnetic heating body and is connected to the fuel rail housing to detect the fuel temperature in the fuel rail housing.

8. The fuel rail assembly according to any one of claims 1 to 4, characterized in that: The fuel rail assembly further includes a fuel connector connected to the fuel rail housing to deliver fuel to the fuel rail housing.

9. The fuel rail assembly according to claim 1, characterized in that: The fuel inside the fuel rail housing is methanol.

10. A vehicle, characterized in that: The vehicle comprises a fuel rail assembly as claimed in any one of claims 1 to 9.

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