Fuel pump assembly, fuel supply system and vehicle

Abstract

The utility model relates to a fuel pump assembly, a fuel supply system and a vehicle. The fuel pump assembly comprises a jet pump and a first noise reduction structure. Wherein the first noise reduction structure is arranged on a fuel oil injection path of the injection pump, and is used for reducing the noise of the fuel oil injected by the injection pump. The utility model aims to reduce the noise caused by the fuel oil sprayed by the jet pump.

Description

Technical Field

[0001] This application relates to the field of fuel pump assembly technology, and more particularly to a fuel pump assembly, a fuel supply system, and a vehicle. Background Technology

[0002] The vehicle includes a fuel tank, a fuel pump assembly, and an engine. The fuel pump assembly is used to deliver fuel from the fuel tank to the engine to provide fuel for the engine.

[0003] In related technologies, fuel pump assemblies include ejector pumps, and the fuel ejected by the ejector pumps can cause significant noise. Utility Model Content

[0004] This application provides a fuel pump assembly, a fuel supply system, and a vehicle, designed to reduce noise caused by fuel ejected from the ejector pump.

[0005] To achieve the above objectives, according to a first aspect of this application, a fuel pump assembly is provided, comprising:

[0006] Ejector pump; and

[0007] A first noise reduction structure is disposed on the injection path of the fuel injected by the ejector pump to reduce the noise of the fuel injected by the ejector pump.

[0008] Optionally, the first noise reduction structure includes a flow guide for guiding the fuel injected by the ejector pump.

[0009] Optionally, the flow guide may be provided in multiple parts.

[0010] Optionally, two adjacent flow guides define a flow guide groove, at least a portion of which opens toward the outlet of the ejector pump.

[0011] Optionally, in the jet direction of the ejector pump, the guide portion is gradually widened at one end near the ejector pump;

[0012] And / or, the flow guide is configured as a flow guide rib.

[0013] Optionally, the fuel pump assembly further includes a fuel reservoir, and the first noise reduction structure is disposed in the fuel reservoir.

[0014] Optionally, the oil storage tank includes a bottom wall and a side wall surrounding the bottom wall, the ejector pump is located on the inner circumference of the side wall, and the first noise reduction structure is disposed on the side wall and / or the bottom wall.

[0015] Optionally, the fuel pump assembly further includes a pump core and a flow restrictor, the pump core being connected to the ejector pump via the flow restrictor.

[0016] Optionally, the flow limiting component has a flow limiting orifice through which fuel flows, the orifice having a diameter ranging from 0.5 mm to 1.5 mm.

[0017] Optionally, the pump core includes a first pipe joint for discharging fuel, and the flow-limiting component is disposed on the first pipe joint.

[0018] Optionally, the fuel pump assembly further includes a connecting pipe that connects the first pipe fitting and the ejector pump.

[0019] Optionally, the flow-limiting component is partially located inside the first pipe joint and partially located inside the connecting pipe.

[0020] Optionally, the fuel pump assembly further includes a fuel pressure regulator for adjusting the fuel pressure output by the fuel pump assembly.

[0021] Optionally, the fuel pump assembly further includes a second noise reduction structure, which is disposed on the injection path of the fuel injected by the fuel pressure regulator to reduce the noise of the fuel injected by the fuel pressure regulator.

[0022] Optionally, in the injection direction of the oil pressure regulator, the second noise reduction structure is gradually widened at one end near the oil pressure regulator.

[0023] Optionally, the fuel pump assembly further includes a mounting housing, the mounting housing having an oil outlet channel, the oil pressure regulator being located in the mounting housing and communicating with the oil outlet channel, and the second noise reduction structure being located in the oil outlet channel.

[0024] According to a second aspect of this application, a fuel supply system is provided, comprising:

[0025] Fuel tank; and

[0026] The aforementioned fuel pump assembly is located in the fuel tank.

[0027] According to a third aspect of this application, a vehicle is also provided, including the aforementioned fuel supply system.

[0028] In the fuel pump assembly of this application embodiment, the fuel pump assembly includes an ejector pump and a first noise reduction structure. The first noise reduction structure is disposed in the injection path of the fuel injected by the ejector pump to reduce the noise of the fuel injected by the ejector pump. This reduces the noise caused by the fuel injected by the ejector pump.

[0029] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0032] Figure 1 This is a schematic diagram of the overall structure of the fuel pump assembly provided in an exemplary embodiment of this disclosure.

[0033] Figure 2 yes Figure 1 Exploded view of the fuel pump assembly;

[0034] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0035] Figure 4 yes Figure 1 A cross-sectional view of the fuel pump assembly structure in the middle;

[0036] Figure 5 yes Figure 1 A cross-sectional view of the fuel pump assembly structure in the middle;

[0037] Figure 6 yes Figure 1 A schematic diagram of some structures of the fuel pump assembly;

[0038] Figure 7 yes Figure 6 Enlarged view of point B in the middle.

[0039] Explanation of reference numerals in the attached figures:

[0040] 100. Fuel pump assembly; 210. Fuel reservoir; 211. Bottom wall; 212. Side wall; 220. First noise reduction structure; 221. Flow guide; 222. Flow guide groove; 310. Pump core; 320. First pipe joint; 330. Flow limiting component; 340. Connecting pipe; 350. Ejector pump; 400. Filter; 410. Mounting hole; 420. Mounting housing; 421. Fuel outlet channel; 430. Second noise reduction structure; 500. Oil pressure regulator; 610. Flange; 620. Socket; 630. Guide rod; 640. Second pipe joint; 650. Fuel supply pipe; 660. Wiring harness. Detailed Implementation

[0041] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0042] According to the first aspect of this application, referring to Figure 1 , 2 According to methods 6 and 7, this disclosure provides a fuel pump assembly 100, which includes an ejector pump 350 and a first noise reduction structure 220. The first noise reduction structure 220 is disposed in the injection path of the ejector pump 350 to reduce the noise of the fuel injected by the ejector pump 350. This reduces the noise caused by the fuel injected by the ejector pump 350.

[0043] In some embodiments, the first noise reduction structure 220 includes a flow guide 221 for guiding the fuel injected by the ejector pump 350.

[0044] In this way, the guide section 221 can guide the flow direction of the fuel, preventing the fuel from directly impacting other components of the fuel pump assembly 100, thereby reducing the noise generated by the impact of the fuel injected by the ejector pump 350.

[0045] However, this design is not limited to this. In some other embodiments, the first noise reduction structure 220 is configured with a sound-absorbing material. The sound-absorbing material can be a five-stage sound-absorbing material, such as expanded perlite. The sound-absorbing material can also be an organic sound-absorbing material, such as rubber sponge.

[0046] In some embodiments, the guide portion 221 is provided with a plurality of portions.

[0047] In this way, multiple guide sections 221 can more precisely control the flow state of the fuel, which helps to reduce the noise caused by the fuel injected by the ejector pump 350.

[0048] Furthermore, even if one of the flow guides 221 malfunctions or is damaged, the other flow guides 221 can still continue to function, ensuring normal fuel flow and noise reduction. This redundant design improves the noise reduction reliability of the fuel pump assembly 100.

[0049] Furthermore, multiple guide sections 221 can distribute fuel pressure and impact to different parts, preventing a single guide section 221 from bearing excessive pressure and wear. This can extend the service life of the guide section 221, reduce the frequency of maintenance and replacement, and thus improve the overall reliability and economy of the fuel pump assembly 100.

[0050] In one example, multiple guide sections 221 are sequentially arranged in the injection direction of the ejector pump 350. These guide sections 221 can guide the fuel in multiple stages, allowing the fuel to be guided and dispersed multiple times during injection, further reducing the direct impact of the fuel on the fuel tank wall or other components, thereby more effectively reducing noise caused by impact. In another example, the multiple guide sections 221 can more precisely control the flow state of the fuel, dividing the fuel into multiple small streams, and the turbulence of each stream is effectively reduced. This can more comprehensively reduce turbulence during fuel injection, thereby significantly reducing noise caused by turbulence. It is worth mentioning that the injection of the ejector pump 350 is as follows: Figure 7 As shown in the C direction.

[0051] In some embodiments, two adjacent guide sections 221 define a guide channel 222, at least a portion of which opens toward the outlet of the ejector pump 350.

[0052] The opening of the guide channel 222 faces the outlet of the ejector pump 350, allowing it to directly receive the fuel injected by the ejector pump 350, ensuring that the fuel can quickly enter the guide channel 222 after injection. This design avoids disorderly diffusion of fuel after injection, allowing it to flow along a preset path, thereby achieving more precise flow guidance.

[0053] Because the opening of the guide channel 222 faces the outlet of the ejector pump 350, the flow direction of fuel is confined within the guide channel 222 after it enters, reducing fuel diffusion during injection. This design allows for more concentrated fuel flow, preventing fuel from splashing into other unwanted areas and improving the efficiency and stability of fuel flow.

[0054] The flow channel 222 disperses the impact force of the fuel onto its inner wall, rather than directly impacting other components of the fuel pump assembly 100. This dispersion effect can significantly reduce the noise generated by fuel impact.

[0055] In some embodiments, the guide portion 221 is gradually widened at one end near the ejector pump 350 in the ejection direction of the ejector pump 350.

[0056] The guide section 221, with its gradually widening end near the ejector pump 350, provides a smoother transition area for the fuel. When fuel is ejected from the ejector pump 350, its velocity and pressure are high. This guide section 221 gradually increases the flow cross-sectional area of ​​the fuel, allowing it to decelerate smoothly as it enters the guide section 221, reducing the impact force and pressure fluctuations caused by sudden deceleration. This smooth transition helps reduce noise and vibration generated when the fuel enters the guide section 221.

[0057] There are many structural forms for the flow guide 221. In some embodiments, the flow guide 221 is configured as a flow guide rib. However, this design is not limited to this. In some other embodiments, the flow guide 221 is configured as a flow guide cylinder, with one opening of the flow guide cylinder facing the outlet of the ejector pump 350.

[0058] The location of the first noise reduction structure 220 can vary. In some embodiments, the fuel pump assembly 100 also includes a fuel reservoir 210, and the first noise reduction structure 220 is located in the fuel reservoir 210. However, this design is not limited to this. In some other embodiments, the fuel pump assembly 100 also includes a pump core 310, and the first noise reduction structure 220 is located in the pump core 310.

[0059] The location of the first noise reduction structure 220 in the oil storage tank 210 can vary. In some embodiments, the oil storage tank 210 includes a bottom wall 211 and a side wall 212 surrounding the bottom wall 211, with the ejector pump 350 located on the inner circumference of the side wall 212, and the first noise reduction structure 220 disposed on the side wall 212 and the bottom wall 211. However, this design is not limited to this. In some other embodiments, the first noise reduction structure 220 is disposed on the side wall 212; or, the first noise reduction structure 220 is disposed on the bottom wall 211.

[0060] In one example, the first noise reduction structure 220 includes a flow guide 221, which is configured as a flow guide rib. The flow guide rib is located on the bottom and side wall 212 of the oil reservoir 210. It can be understood that the flow guide rib not only guides the flow direction of the fuel but also strengthens the structural strength of the oil reservoir 210. This makes the flow guide rib serve a dual purpose.

[0061] Furthermore, the length direction of the guide rib is consistent with the injection direction of the ejector pump 350. It can be understood that one end of the guide rib is positioned near the outlet of the ejector pump 350. In the injection direction of the ejector pump 350, the end of the guide rib is exposed at the outlet of the ejector pump 350. This causes the fuel injected by the ejector pump 350 to be divided into smaller streams by the guide rib when it flows to the guide rib. The turbulence of each stream is reduced, thus more comprehensively reducing turbulence during fuel injection and significantly reducing noise caused by turbulence.

[0062] Furthermore, the first noise reduction structure 220 includes multiple guide ribs, and two adjacent guide sections 221 define a guide groove 222. The length direction of the guide groove 222 is consistent with the injection direction of the ejector pump 350, which allows the fuel injected by the ejector pump 350 to enter the guide groove 222 more smoothly. It can be understood that one end of the guide groove 222 extends to the side wall 212 of the oil reservoir 210.

[0063] In addition, it is understandable that the oil storage tank 210 has an opening opposite to the bottom wall 211, and the guide channel 222 is gradually widened in the direction near the opening. This allows the fuel flowing through the guide channel 222 to flow more smoothly from the bottom wall 211 to the opening, which helps to reduce the noise caused by the fuel.

[0064] In addition, the ejector pump 350 is snapped onto the bottom of the oil reservoir 210, which may be made of, but is not limited to, plastic.

[0065] Reference Figures 1 to 4 In some embodiments, the fuel pump assembly 100 further includes a pump core 310 and a flow limiting component 330, with the pump core 310 connected to the ejector pump 350 via the flow limiting component 330.

[0066] It is understood that the flow-limiting component 330 can reduce the fuel flow rate from the pump core 310 to the ejector pump 350. This reduces the flow rate and pressure of the fuel ejected by the ejector pump 350, thereby reducing the intensity of the ejector turbulence and thus reducing ejector noise. Furthermore, the reduced fuel flow rate ejected by the ejector pump 350 reduces the load on the pump core 310, further reducing the noise emitted by the pump core 310 during operation.

[0067] In some embodiments, the flow restrictor 330 has a flow restrictor orifice through which fuel flows, the orifice having a diameter ranging from 0.5 mm to 1.5 mm.

[0068] It is understood that during the process of pump core 310 delivering fuel to ejector pump 350, the fuel passes through a flow-limiting orifice with a diameter ranging from 0.5 mm to 1.5 mm. This ensures that the amount of fuel flowing to ejector pump 350 is not too small, while also reducing the flow rate and pressure of the fuel ejected by ejector pump 350, thus reducing the intensity of ejection turbulence and consequently reducing ejection noise. In one example, the flow-limiting component 330 is tubular, and the material of the flow-limiting component 330 may, but is not limited to, be plastic.

[0069] However, this design is not limited to this. In some other embodiments, the flow limiting component 330 is configured as a flow limiting valve. This allows for the regulation of the fuel flow from the fuel pump to the ejector pump 350. This makes the fuel pump assembly 100 more versatile.

[0070] The flow limiting component 330 can be located in many places. In some embodiments, the pump core 310 includes a first pipe joint 320 for outputting fuel, and the flow limiting component 330 is located at the first pipe joint 320.

[0071] In one example, the orifice diameter of the first fitting 320 ranges from 2 mm to 5 mm. In another example, the flow restrictor 330 is detachably connected to the first fitting 320. Thus, the user housing can expand the uses of the fuel pump assembly 100 by removing and installing the flow restrictor 330.

[0072] However, this design is not limited to this; in some other embodiments, the flow limiting component 330 is provided on the ejector pump 350.

[0073] In some embodiments, the fuel pump assembly 100 further includes a connecting pipe 340 that connects the first pipe joint 320 and the ejector pump 350. The connecting pipe 340 allows for more flexible placement of the ejector pump 350.

[0074] In some embodiments, the flow-limiting component 330 is partially located within the first pipe joint 320 and partially within the connecting pipe 340. However, this design is not limited to this; in some other embodiments, the flow-limiting component 330 is entirely located within the first pipe joint 320.

[0075] In some embodiments, the connecting pipe 340 is configured as a bellows. The bellows has a certain degree of flexibility, which allows for more flexible placement of the ejector pump 350. The bellows may be made of, but is not limited to, nylon. In one example, the first pipe joint 320 has a higher hardness than the bellows. That is, the first pipe joint 320 is less prone to deformation when it intersects with the bellows, which is beneficial for installing the flow restrictor valve at the first pipe joint 320.

[0076] Reference Figure 1 , 2 In some embodiments, the fuel pump assembly 100 further includes an oil pressure regulator 500 for regulating the oil pressure output by the fuel pump assembly 100.

[0077] The oil pressure regulator 500 maintains the oil pressure in the fuel pump assembly 100 within a set range, ensuring a stable fuel supply to the engine connected to the fuel pump assembly 100 under different operating conditions. Furthermore, the oil pressure regulator 500 can buffer pressure pulsations generated during fuel supply from the fuel pump assembly 100, reducing pressure shocks in the fuel pump assembly 100.

[0078] In some embodiments, the fuel pump assembly 100 further includes a second noise reduction structure 430 disposed on the injection path of the fuel injected by the fuel pressure regulator 500, for reducing the noise of the fuel injected by the fuel pressure regulator 500. This reduces the noise caused by the fuel injected by the fuel pressure regulator 500.

[0079] In some embodiments, the second noise reduction structure 430 is gradually widened at one end near the oil pressure regulator 500 in the injection direction of the oil pressure regulator 500.

[0080] The second noise reduction structure 430, with its gradually widening end near the ejector pump 350, provides a smoother transition area for the fuel. When fuel is ejected from the ejector pump 350, its velocity and pressure are high. This second noise reduction structure 430 gradually increases the flow cross-sectional area of ​​the fuel, allowing it to decelerate smoothly as it enters the structure, reducing the impact and pressure fluctuations caused by sudden deceleration. This smooth transition helps reduce noise and vibration generated when the fuel enters the second noise reduction structure 430.

[0081] In one example, the second noise reduction structure 430 is arranged in a conical shape. In another example, the second noise reduction structure 430 is arranged in a pyramidal shape.

[0082] However, this design is not limited to this. In some other embodiments, the second noise reduction structure 430 is configured with a sound-absorbing material. The sound-absorbing material can be an inorganic sound-absorbing material, such as expanded perlite. The sound-absorbing material can also be an organic sound-absorbing material, such as rubber sponge.

[0083] In some embodiments, the fuel pump assembly 100 further includes a mounting housing 420, the mounting housing 420 having an oil outlet channel 421, an oil pressure regulator 500 being disposed in the mounting housing 420 and communicating with the oil outlet channel 421, and a second noise reduction structure 430 being disposed in the oil outlet channel 421.

[0084] After the fuel enters the fuel outlet channel 421, its flow direction is restricted within the fuel outlet channel 421, which reduces the diffusion of fuel during the injection process, so that the second noise reduction structure 430 can reduce the noise of most of the fuel injected by the fuel pressure regulator 500.

[0085] In some embodiments, the fuel pump assembly 100 further includes a filter 400 connected to a pump core 310, the pump core 310 being used to deliver fuel to the filter 400, and one end of the filter 400 having a mounting hole 410 for mounting the pump core 310. The housing of the filter 400 and the mounting housing 420 are integrally formed.

[0086] According to a second aspect of this disclosure, a fuel supply system is provided, comprising a fuel tank and the aforementioned fuel pump assembly 100. This fuel supply system possesses all the beneficial effects of the aforementioned fuel pump assembly 100, which will not be elaborated further herein. The fuel supply system is located within the fuel tank.

[0087] In one embodiment, the fuel pump assembly 100 also includes a flange 610. The flange 610 may be made of, but is not limited to, plastic. A plastic flange 610 is lighter, which helps to reduce the weight of the fuel supply system. The fuel pump assembly 100 is mounted to the fuel tank via the flange 610.

[0088] The fuel pump assembly 100 also includes a fuel supply line 650, the two ends of which are connected to the flange 610 and the filter 400 respectively via a second pipe connector 640. The material of the second pipe connector 640 may be, but is not limited to, plastic. When the fuel supply system is applied to a vehicle, the fuel supply line 650 is used to supply fuel to the engine.

[0089] The fuel pump assembly 100 also includes a guide rod 630, which may be made of, but is not limited to, metal, and the guide rod 630 connects the flange 610 and the fuel reservoir 210.

[0090] The fuel pump assembly 100 also includes a wiring harness 660 and a socket 620. The socket 620 is located on the flange 610. The two ends of the wiring harness 660 are connected to the pump core 310 and the socket 620, respectively. When the socket 620 is connected to an external power source, the current from the external power source is transmitted to the pump core 310 through the wiring harness 660 so that the pump core 310 can operate.

[0091] According to a third aspect of this disclosure, a vehicle is provided that includes the aforementioned fuel supply system, and the vehicle has all the beneficial effects of the aforementioned fuel supply system, which will not be repeated here.

[0092] The vehicle may be a gasoline-powered vehicle, a plug-in hybrid electric vehicle, or a new energy vehicle, etc., and this disclosure does not make any specific restrictions.

[0093] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0094] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0095] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0096] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A fuel pump assembly, characterized in that, include: Ejector pump; as well as A first noise reduction structure is disposed on the injection path of the fuel injected by the ejector pump to reduce the noise of the fuel injected by the ejector pump.

2. The fuel pump assembly according to claim 1, characterized in that, The first noise reduction structure includes a flow guide section, which is used to guide the fuel injected by the ejector pump.

3. The fuel pump assembly according to claim 2, characterized in that, The flow guide section is provided in multiple parts.

4. The fuel pump assembly according to claim 3, characterized in that, The two adjacent flow guides restrict the flow channel, and at least a portion of the flow channel opens toward the outlet of the ejector pump.

5. The fuel pump assembly according to claim 2, characterized in that, In the injection direction of the ejector pump, the guide portion is gradually widened at one end near the ejector pump; And / or, the flow guide is configured as a flow guide rib.

6. The fuel pump assembly according to claim 1, characterized in that, The fuel pump assembly also includes a fuel reservoir, and the first noise reduction structure is disposed in the fuel reservoir.

7. The fuel pump assembly according to claim 6, characterized in that, The oil storage tank includes a bottom wall and a side wall surrounding the bottom wall. The ejector pump is located on the inner circumference of the side wall, and the first noise reduction structure is disposed on the side wall and / or the bottom wall.

8. The fuel pump assembly according to claim 1, characterized in that, The fuel pump assembly also includes a pump core and a flow limiting component, the pump core being connected to the ejector pump via the flow limiting component.

9. The fuel pump assembly according to claim 8, characterized in that, The flow-limiting component has a flow-limiting orifice through which fuel flows, and the orifice diameter ranges from 0.5 mm to 1.5 mm.

10. The fuel pump assembly according to claim 8, characterized in that, The pump core includes a first pipe joint for discharging fuel, and the flow limiting component is disposed on the first pipe joint.

11. The fuel pump assembly according to claim 10, characterized in that, The fuel pump assembly also includes a connecting pipe that connects the first pipe joint and the ejector pump.

12. The fuel pump assembly according to claim 11, characterized in that, The flow-limiting component is partially located inside the first pipe joint and partially located inside the connecting pipe.

13. The fuel pump assembly according to any one of claims 1 to 11, characterized in that, The fuel pump assembly also includes a fuel pressure regulator for adjusting the fuel pressure output by the fuel pump assembly.

14. The fuel pump assembly according to claim 13, characterized in that, The fuel pump assembly further includes a second noise reduction structure, which is disposed on the injection path of the fuel injected by the fuel pressure regulator to reduce the noise of the fuel injected by the fuel pressure regulator.

15. The fuel pump assembly according to claim 14, characterized in that, In the injection direction of the oil pressure regulator, the second noise reduction structure is gradually widened at one end near the oil pressure regulator.

16. The fuel pump assembly according to claim 15, characterized in that, The fuel pump assembly also includes a mounting housing, which has an oil outlet channel. The oil pressure regulator is located in the mounting housing and communicates with the oil outlet channel. The second noise reduction structure is located in the oil outlet channel.

17. A fuel supply system, characterized in that, include: Fuel tank; as well as The fuel pump assembly as described in any one of claims 1 to 16 is disposed in the fuel tank.

18. A vehicle, characterized in that, Includes the fuel supply system as described in claim 17.

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