Vehicle fuel system

Abstract

The invention provides a vehicle fuel system which comprises a fuel tank provided with a fuel storage cavity used for storing fuel, and the fuel tank is used for being installed on a vehicle; the oil suction structure is provided with an oil suction port capable of sucking oil in the oil storage cavity, and the oil suction structure is arranged on the fuel tank; the front-and-back sliding guide structure extends in the longitudinal direction of the vehicle and is used for guiding the oil suction port to slide front and back in the longitudinal direction of the vehicle along with front-and-back flowing of oil in the oil storage cavity; the left-right sliding guide structure extends in the transverse direction of the vehicle and is used for guiding the oil suction opening to transversely slide in the transverse direction of the vehicle along with left-right flowing of oil in the oil storage cavity. The oil suction port of the oil suction structure can longitudinally and / or transversely slide along the vehicle under the guidance of the front-back sliding guide structure and / or the left-right sliding guide structure, so that the oil suction port synchronously slides to a lower position along with flowing of oil liquid, it is guaranteed that the oil suction port makes full contact with the oil liquid, and the service life of the vehicle is prolonged. And the problems of insufficient vehicle power and even flameout caused by unsmooth oil absorption are solved.

Description

Technical Field

[0001] The present application relates to the technical field of fuel tanks, and in particular to a vehicle fuel system. Background Art

[0002] When the heavy-duty truck fuel system is used, the oil in the middle of the bottom of the fuel tank is generally sucked through the oil suction pipe to ensure the normal operation of the engine. The existing heavy-duty truck fuel system oil suction port is fixed and cannot move in real time with the tilt of the vehicle. When the vehicle is in a low-liquid level uphill or downhill or left-right tilting condition, the oil will gather at the lowest position in the fuel tank due to gravity, resulting in the oil suction port not being able to fully contact the oil, causing poor oil suction, and the vehicle is more likely to experience power reduction or even flameout; in addition, it also affects the utilization rate of fuel. Summary of the invention

[0003] In view of this, the purpose of this application is to provide a vehicle fuel system to ensure that the oil suction port is in full contact with the oil when the vehicle is in a low liquid level, uphill or downhill or tilted left or right condition, so as to solve the problem of insufficient vehicle power or even stalling caused by poor oil suction.

[0004] In order to achieve the above objectives, this application provides the following technical solutions:

[0005] A vehicle fuel system, comprising:

[0006] A fuel tank having an oil storage cavity for storing oil, wherein the fuel tank is installed on a vehicle;

[0007] An oil suction structure, having an oil suction port capable of sucking oil in the oil storage cavity, and the oil suction structure is arranged on the fuel tank;

[0008] A front-to-back sliding guide structure extending in the longitudinal direction of the vehicle and used to guide the oil suction port to slide forward and backward along the longitudinal direction of the vehicle as the oil in the oil storage chamber flows forward and backward;

[0009] A left-right sliding guide structure extending in the transverse direction of the vehicle and used to guide the oil suction port to slide left-right in the transverse direction of the vehicle as the oil in the oil storage cavity flows left-right;

[0010] Among them, the first of the front and rear sliding guide structure and the left and right sliding guide structure is fixedly arranged in the oil storage cavity, the second is slidably arranged on the first along the extension direction of the first, and the oil suction port is slidably arranged on the second along the extension direction of the second.

[0011] Preferably, the above-mentioned vehicle fuel system further includes a sliding support frame fixedly arranged at the bottom of the oil storage chamber, and the first one is fixed on the sliding support frame.

[0012] Preferably, in the above vehicle fuel system, the first one is the left-right sliding guide structure, and the second one is the front-back sliding guide structure;

[0013] Wherein, the left-right sliding guide structure comprises left-right inclined slide rails, which are fixedly arranged on the sliding support frame along the transverse direction of the vehicle; and left-right sliding members, which are slidably arranged on the left-right inclined slide rails along the transverse direction of the vehicle;

[0014] The front and rear sliding guide structure includes uphill and downhill slide rails fixedly arranged on the left and right slide members along the longitudinal direction of the vehicle; front and rear slide members slidably arranged on the uphill and downhill slide rails along the longitudinal direction of the vehicle, and the oil suction port is arranged on the front and rear slide members.

[0015] Preferably, in the above-mentioned vehicle fuel system, the left and right sliding guide structure further comprises left and right sliding buffers for buffering the sliding impact force of the left and right sliding members;

[0016] The front-rear sliding guide structure also includes front-rear sliding buffers for buffering the sliding impact force of the front-rear sliding members.

[0017] Preferably, in the above vehicle fuel system, the left and right tilting rails include two transverse polished rods arranged in parallel; the left and right sliding members include two transverse sliding sleeves, which are sleeved on the two transverse polished rods in a one-to-one correspondence;

[0018] The uphill and downhill slide rails include two longitudinal polished rods arranged in parallel, and the longitudinal polished rods are connected between the two transverse sliding sleeves; the front and rear sliding members include two longitudinal sliding sleeves, which are sleeved on the two longitudinal polished rods in a one-to-one correspondence.

[0019] Preferably, in the above vehicle fuel system, the left and right sliding buffers include four transverse telescopic springs, two transverse telescopic springs are sleeved on each transverse polished rod, and the two transverse telescopic springs are respectively located on both sides of the transverse sliding sleeve;

[0020] The front and rear sliding buffers include four longitudinal telescopic springs. Two longitudinal telescopic springs are sleeved on each longitudinal polished rod, and the two longitudinal telescopic springs are respectively located on both sides of the longitudinal sliding sleeve.

[0021] Preferably, in the above-mentioned vehicle fuel system, the sliding support frame is an annular frame that is fixedly fitted around the bottom of the oil storage chamber.

[0022] Preferably, in the above vehicle fuel system, the oil suction structure comprises:

[0023] An oil storage barrel, comprising an oil suction chamber and the oil suction port located at the bottom of the oil storage barrel, the oil suction chamber is connected with the oil storage chamber through the oil suction port, and the oil storage barrel is slidably arranged on the second member along the extension direction of the second member;

[0024] An oil outlet pipeline, whose inlet end is arranged on the oil storage barrel and communicates with the oil suction chamber, and whose outlet end is arranged on the fuel tank, and the distance between the two ends of the oil outlet pipeline can be changed as the oil storage barrel slides;

[0025] The oil return pipeline has an outlet end arranged on the oil storage barrel and communicated with the oil suction chamber, and an inlet end arranged on the fuel tank. The distance between the two ends of the oil return pipeline can be changed as the oil storage barrel slides.

[0026] Preferably, in the above-mentioned vehicle fuel system, the oil suction structure further comprises a fixed plate arranged on the top of the fuel tank, and the outlet end of the oil outlet pipeline and the inlet end of the oil return pipeline are both arranged on the fixed plate;

[0027] And / or, the oil outlet pipeline and the oil return pipeline are both spiral spring tubes.

[0028] Preferably, in the above vehicle fuel system, the oil storage tank is provided with an oil suction channel, an oil outlet channel, an oil return channel and an ejection valve; wherein:

[0029] The oil suction channel is located at the bottom of the oil storage barrel, and its oil inlet forms the oil suction port;

[0030] The oil inlet of the oil outlet channel is communicated with the oil suction chamber, and the oil outlet is communicated with the inlet end of the oil outlet pipeline;

[0031] The oil inlet of the oil return channel is in communication with the outlet end of the oil return pipeline;

[0032] The ejection valve is located at the bottom of the oil storage barrel, a first inlet of the ejection valve is communicated with the oil outlet of the oil suction channel, a second inlet is communicated with the oil outlet of the oil return channel, and an outlet is communicated with the oil suction chamber.

[0033] It can be seen from the above technical scheme that the vehicle fuel system provided by the present application includes a fuel tank, an oil suction structure, a front-and-rear sliding guide structure and a left-and-right sliding guide structure; wherein the fuel tank has an oil storage cavity for storing oil, and the fuel tank is used to be installed on a vehicle; the oil suction structure has an oil suction port that can suck the oil in the oil storage cavity, and the oil suction structure is arranged on the fuel tank; the front-and-rear sliding guide structure extends in the longitudinal direction of the vehicle, and is used to guide the oil suction port to slide forward and backward along the longitudinal direction of the vehicle as the oil in the oil storage cavity flows forward and backward; the left-and-right sliding guide structure extends in the transverse direction of the vehicle, and is used to guide the oil suction port to slide left and right along the transverse direction of the vehicle as the oil in the oil storage cavity flows left and right; wherein the first of the front-and-rear sliding guide structure and the left-and-right sliding guide structure is fixedly arranged in the oil storage cavity, the second is slidably arranged on the first along the extension direction of the first, and the oil suction port is slidably arranged on the second along the extension direction of the second.

[0034] It should be noted that the vehicle vertical direction is the height direction of the vehicle, that is, the up and down direction, the vehicle transverse direction is the width direction of the vehicle, that is, the left and right direction, and the vehicle longitudinal direction is the length direction of the vehicle, that is, the front and back direction.

[0035] The first of the front-to-back sliding guide structure and the left-to-right sliding guide structure is one of them, and the second is the other of them; that is, the first can be either the front-to-back sliding guide structure or the left-to-right sliding guide structure. In the first case, when the first is the front-to-back sliding guide structure, the second is the left-to-right sliding guide structure; in the second case, when the first is the left-to-right sliding guide structure, the second is the front-to-back sliding guide structure.

[0036] In the vehicle fuel system provided by the present application, the oil suction port can be slidably arranged on the second one, and the second one can be slidably arranged on the first one, so that the second one directly guides the oil suction port to slide along the extension direction of the second one, and the first one indirectly guides the oil suction port to slide along the extension direction of the first one by guiding the second one to slide along the extension direction of the first one.

[0037] When the vehicle fuel system provided by the present application is used, the fuel tank is installed on the vehicle so that the top wall and the bottom wall of the oil storage cavity of the fuel tank are arranged opposite to each other in the vertical direction of the vehicle, the front side wall and the rear side wall are arranged opposite to each other in the longitudinal direction of the vehicle, and the left side wall and the right side wall are arranged opposite to each other in the transverse direction of the vehicle; then fuel liquid is injected into the oil storage cavity, and fuel is provided to the vehicle through the fuel tank.

[0038] When the vehicle is in a low liquid level uphill or downhill condition and / or tilted left or right, the front side wall and the rear side wall of the oil storage chamber are at different heights and / or the left side wall and the right side wall are at different heights. The oil in the oil storage chamber will flow forward and backward and / or left and right due to gravity to flow to the lowest position. At this time, the oil suction port of the oil suction structure can slide forward and backward along the longitudinal direction of the vehicle as the oil in the oil storage chamber flows forward and backward under the guidance of the front and rear sliding guide structures; and / or, the oil suction port of the oil suction structure can slide left and right along the transverse direction of the vehicle as the oil in the oil storage chamber flows left and right under the guidance of the left and right sliding guide structures, so that the oil suction port can slide to a lower position synchronously with the flow of the oil, which can ensure that the oil suction port is in full contact with the oil, thereby solving the problem of insufficient vehicle power or even stalling due to poor oil suction; in addition, it also improves fuel utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present application 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 embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0040] Figure 1 A schematic diagram of the structure of a vehicle fuel system provided in an embodiment of the present application;

[0041] Figure 2 A schematic diagram of the structure of a vehicle fuel system provided in an embodiment of the present application without a fuel tank;

[0042] Figure 3 A schematic diagram of the explosion structure of a vehicle fuel system after removing the fuel tank provided in an embodiment of the present application.

[0043] superior Figure 1-3 middle:

[0044] 1- fuel tank, 2- fixed plate, 3- oil return pipeline, 4- oil storage barrel, 5- sliding support frame, 6- left and right tilting slide rails, 7- longitudinal telescopic spring, 8- front and rear sliding parts, 9- left and right sliding parts, 10- transverse telescopic spring, 11- oil outlet pipeline, 12- uphill and downhill slide rails. DETAILED DESCRIPTION

[0045] The embodiment of the present application provides a vehicle fuel system, which ensures that the oil suction port is in full contact with the oil when the vehicle is in a low-liquid-level uphill or downhill or tilted left or right condition, thereby solving the problem of insufficient vehicle power or even flameout caused by poor oil suction.

[0046] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0047] like Figure 1-3 As shown, the vehicle fuel system provided by the embodiment of the present application includes a fuel tank 1, an oil suction structure, a front-to-rear sliding guide structure and a left-to-right sliding guide structure; wherein the fuel tank 1 has an oil storage cavity for storing oil, and the fuel tank is used to be installed on a vehicle; the oil suction structure has an oil suction port that can suck the oil in the oil storage cavity, and the oil suction structure is arranged on the fuel tank 1; the front-to-rear sliding guide structure extends in the longitudinal direction of the vehicle, and is used to guide the oil suction port to slide forward and backward along the longitudinal direction of the vehicle as the oil in the oil storage cavity flows forward and backward; the left-to-right sliding guide structure extends in the transverse direction of the vehicle, and is used to guide the oil suction port to slide left and right along the transverse direction of the vehicle as the oil in the oil storage cavity flows left and right; wherein the first of the front-to-rear sliding guide structure and the left-to-right sliding guide structure is fixedly arranged in the oil storage cavity, the second is slidably arranged on the first along the extension direction of the first, and the oil suction port is slidably arranged on the second along the extension direction of the second.

[0048] It should be noted that the vehicle vertical direction is the height direction of the vehicle, that is, the up and down direction, the vehicle transverse direction is the width direction of the vehicle, that is, the left and right direction, and the vehicle longitudinal direction is the length direction of the vehicle, that is, the front and back direction.

[0049] The first of the front-to-back sliding guide structure and the left-to-right sliding guide structure is one of them, and the second is the other of them; that is, the first can be either the front-to-back sliding guide structure or the left-to-right sliding guide structure. In the first case, when the first is the front-to-back sliding guide structure, the second is the left-to-right sliding guide structure; in the second case, when the first is the left-to-right sliding guide structure, the second is the front-to-back sliding guide structure.

[0050] In the vehicle fuel system provided by the embodiment of the present application, the oil suction port can be slidably arranged on the second one, and the second one can be slidably arranged on the first one, so that the second one directly guides the oil suction port to slide along the extension direction of the second one, and the first one indirectly guides the oil suction port to slide along the extension direction of the first one by guiding the second one to slide along the extension direction of the first one.

[0051] When the vehicle fuel system provided by the embodiment of the present application is used, the fuel tank 1 is installed on the vehicle so that the top wall and the bottom wall of the oil storage cavity of the fuel tank 1 are arranged opposite to each other in the vertical direction of the vehicle, the front side wall and the rear side wall are arranged opposite to each other in the longitudinal direction of the vehicle, and the left side wall and the right side wall are arranged opposite to each other in the transverse direction of the vehicle; then, fuel liquid is injected into the oil storage cavity, and fuel is provided to the vehicle through the fuel tank 1.

[0052] When the vehicle is in a low liquid level uphill or downhill condition and / or tilted left or right, the front side wall and the rear side wall of the oil storage chamber are at different heights and / or the left side wall and the right side wall are at different heights. The oil in the oil storage chamber will flow forward and backward and / or left and right due to gravity to flow to the lowest position. At this time, the oil suction port of the oil suction structure can slide forward and backward along the longitudinal direction of the vehicle as the oil in the oil storage chamber flows forward and backward under the guidance of the front and rear sliding guide structures; and / or, the oil suction port of the oil suction structure can slide left and right along the transverse direction of the vehicle as the oil in the oil storage chamber flows left and right under the guidance of the left and right sliding guide structures, so that the oil suction port can slide to a lower position synchronously with the flow of the oil, which can ensure that the oil suction port is in full contact with the oil, thereby solving the problem of insufficient vehicle power or even stalling due to poor oil suction; in addition, it also improves fuel utilization.

[0053] It can be seen that the oil suction port and the front and rear sliding guide structure and the left and right sliding guide structure provided in the embodiment of the present application cooperate to form a follow-up oil suction system, and the oil suction port can slide forward and backward or left and right as the oil flows due to the tilt of the vehicle, so that it is in full contact with the oil in real time.

[0054] Preferably, the vehicle fuel system provided in the above embodiment also includes a sliding support frame 5, which is fixedly arranged at the bottom of the oil storage chamber, and the first one is fixed on the sliding support frame 5. In this embodiment, a sliding support frame 5 is separately arranged at the bottom of the oil storage tank to provide stable support for the front and rear sliding guide structures and the left and right sliding guide structures. The front and rear sliding guide structures and the left and right sliding guide structures are all installed on the sliding support frame 5. On the one hand, the sliding support frame 5 is convenient for processing and installing the sliding guide structure, and the installation accuracy of the sliding guide structure is higher, thereby ensuring the smoothness of sliding; on the other hand, there is no need to improve the structure of the oil storage tank itself, and the production process of the oil storage tank itself will not be changed, and the sealing of the oil storage tank itself can be ensured, and the safety can be ensured. It can be understood that the first one can also be directly arranged at the bottom of the oil storage chamber.

[0055] In order to increase the oil storage capacity of the oil storage tank, the oil storage tank is generally larger in the longitudinal direction of the vehicle. In order to facilitate the installation of the oil suction port on the second, preferably, the first is a left-right sliding guide structure, and the second is a front-back sliding guide structure, such as Figure 2 As shown, at this time, the guide length of the front and rear sliding guide structure is large, which is convenient for installing the oil suction port.

[0056] Specifically, the left and right sliding guide structure includes left and right tilting rails 6, which are fixedly arranged on the sliding support frame 5 along the transverse direction of the vehicle; left and right sliding members 9 are slidably arranged on the left and right tilting rails 6 along the transverse direction of the vehicle; the front and rear sliding guide structure includes uphill and downhill rails 12, which are fixedly arranged on the left and right sliding members 9 along the longitudinal direction of the vehicle; front and rear sliding members 8 are slidably arranged on the uphill and downhill rails 12 along the longitudinal direction of the vehicle, and the oil suction port is arranged on the front and rear sliding members 8.

[0057] In this embodiment, the left and right inclined slide rails 6 are connected to the sliding support frame 5, and the left and right sliding members 9 can slide left and right along the left and right inclined slide rails 6 to realize the left and right sliding function of the oil suction port on the left and right inclined slide rails 6. The left and right sliding members 9 are rigidly connected to the uphill and downhill slide rails 12 at the same time to provide fixed support for the uphill and downhill slide rails 12; the oil suction port is fixed on the front and rear sliding members 8, and the front and rear sliding members 8 can slide back and forth along the uphill and downhill slide rails 12 with the oil suction port, to realize the front and rear sliding function of the oil suction port on the uphill and downhill slide rails 12.

[0058] It can be seen that the two sliding guide structures both include sliding rails and sliding parts that slide with the sliding rails. The guide rails of the two sliding guide structures are perpendicular to each other. The two groups of sliding parts slide relative to the two groups of sliding rails respectively to realize the sliding of the oil suction port in four directions of front, back, left and right. Therefore, under the four working conditions of uphill and downhill and left and right tilting of the vehicle, the oil suction port of the guide oil suction structure slides with the flow of oil in the oil storage chamber. Moreover, the oil suction port is arranged on the front and rear sliding parts 8 to facilitate the installation of the oil suction port.

[0059] Alternatively, the front and rear sliding guide structure may not include the front and rear sliding members 8, so that the oil suction port can be directly slidably installed on the uphill and downhill slide rails 12.

[0060] In a further technical solution, the left and right sliding guide structure further includes left and right sliding buffers for buffering the sliding impact force of the left and right sliding members 9; the front and rear sliding guide structure further includes front and rear sliding buffers for buffering the sliding impact force of the front and rear sliding members 8. The present application buffers the sliding impact force of the left and right sliding members 9 by the left and right sliding buffers, and buffers the sliding impact force of the front and rear sliding members 8 by the front and rear sliding buffers, thereby buffering and decelerating the sliding of the oil suction port, achieving shock absorption and noise reduction, and avoiding bumps and noise problems.

[0061] like Figure 2-3 As shown, in a specific embodiment, the left and right inclined slide rails 6 include two transverse light rods arranged in parallel; the left and right sliding members 9 include two transverse sliding sleeves, which are mounted on the two transverse light rods in a one-to-one correspondence; the uphill and downhill slide rails 12 include two longitudinal light rods arranged in parallel, and the longitudinal light rods are connected between the two transverse sliding sleeves; the front and rear sliding members 8 include two longitudinal sliding sleeves, which are mounted on the two longitudinal light rods in a one-to-one correspondence.

[0062] The left and right inclined slide rails 6 of this embodiment use two transverse polished rods fixed on the sliding support frame 5; the left and right sliding members 9 use two transverse sliding sleeves; the uphill and downhill slide rails 12 use two longitudinal polished rods, and the two ends are respectively fixed on the transverse sliding sleeves; the front and rear sliding members 8 use two longitudinal sliding sleeves to facilitate the installation of the oil suction port. In this way, the two sliding guide structures both use cylindrical polished rods to form the slide rails and circular sliding sleeves to form the sliding members. The sliding smoothness of the polished rods and the sliding sleeves is better, while occupying less space, and the structure is simple, easy to assemble, and cost-saving. It can be understood that the two sliding guide structures can also use other structures that can achieve sliding guidance, such as the matching method of the slide groove and the slider, etc., and this application does not make specific limitations on this.

[0063] In order to further optimize the above technical solution, the left and right sliding buffers include four transverse telescopic springs 10, each transverse light rod is sleeved with two transverse telescopic springs 10, and the two transverse telescopic springs 10 are respectively located on both sides of the transverse sliding sleeve; the front and rear sliding buffers include four longitudinal telescopic springs 7, each longitudinal light rod is sleeved with two longitudinal telescopic springs 7, and the two longitudinal telescopic springs 7 are respectively located on both sides of the longitudinal sliding sleeve. Figure 2-3 shown.

[0064] The two sliding guide structures of the present application are both equipped with four telescopic springs, which are arranged in groups of two and distributed on two parallel light rods: the telescopic springs can be compressed or stretched, and play a role of buffering and deceleration; specifically, the sliding impact force received by the transverse sliding sleeve is buffered by four transverse telescopic springs 10, and the transverse telescopic spring 10 and the transverse sliding sleeve can slide left and right on the transverse light rod; the sliding impact force received by the longitudinal sliding sleeve is buffered by four longitudinal telescopic springs 7, and the longitudinal telescopic spring 7 and the longitudinal sliding sleeve can slide back and forth on the longitudinal light rod together with the oil suction port; the telescopic spring can slowly stop the moving oil suction port or the moving front and rear sliding guide structure and the oil suction port, so as to avoid collision between the oil suction port and the sliding support frame 5 and noise problems caused by the collision.

[0065] Overall, if Figure 2 As shown, the sliding support frame 5 is fixed to the bottom of the fuel tank 1, two transverse polished rods are rigidly connected to the sliding support frame 5, a transverse telescopic spring 10 and a transverse sliding sleeve are sleeved on the transverse polished rod and can slide along the transverse polished rod, and the transverse telescopic spring 10 is distributed on both sides of the transverse sliding sleeve; the longitudinal polished rod is rigidly connected to the two transverse sliding sleeves, the longitudinal sliding sleeve and the longitudinal telescopic spring 7 are sleeved on the longitudinal polished rod and can slide along the longitudinal polished rod, and the longitudinal telescopic spring 7 is distributed on both sides of the longitudinal sliding sleeve.

[0066] In addition, the present application does not limit the length of the telescopic spring. In one solution, the length of the telescopic spring is distributed between the end of the light rod and the sliding sleeve. The transverse telescopic springs 10 on both sides can cooperate to support the transverse sliding sleeve in the transverse middle position of the transverse light rod; the four longitudinal telescopic springs 7 can cooperate to support the longitudinal sliding sleeve in the middle position of the longitudinal light rod; so that when the vehicle is traveling in a plane, the oil suction port returns to the center of the bottom of the oil tank, which is convenient for following when going up and down slopes or tilting left and right; at the same time, the longer length has a better buffering effect. In another solution, the length of the telescopic spring is shorter than the distance between the end of the light rod and the sliding sleeve, which can increase the sliding amplitude of the oil suction port while achieving buffering.

[0067] The present application does not limit whether the two ends of the telescopic spring are fixed. In one solution, in order to facilitate the oil suction port to return to the center of the bottom of the oil storage tank, the two ends of the telescopic spring are respectively fixedly connected to the end of the light rod and the sliding sleeve, so that when the telescopic spring on one side of the sliding sleeve is compressed, the telescopic spring on the other side is stretched. During the flat driving of the vehicle, the stretched telescopic spring is used to force the sliding sleeve to return to the middle position, so that the oil suction port returns to the center of the bottom of the oil storage tank, which is convenient for following when going up and down slopes or tilting left and right. In another solution, the two ends of the telescopic spring are not fixed and can only be compressed.

[0068] In order to reduce the impact on the oil storage chamber, preferably, the sliding support frame 5 is an annular frame that fits and is fixed to the bottom of the oil storage chamber. Figure 3 As shown, the sliding support frame 5 is in the form of a frame structure, which is fixed around the bottom of the oil storage cavity by welding. The bottom of the annular frame is hollow and does not occupy the space of the oil storage cavity, thereby ensuring the oil storage capacity and providing stable support for the sliding guide structure. Moreover, the annular frame is a whole, which is convenient for ensuring installation accuracy.

[0069] In a specific embodiment, the oil suction structure includes an oil storage barrel 4, an oil outlet pipeline 11 and an oil return pipeline 3, wherein the oil storage barrel 4 includes an oil suction chamber and an oil suction port located at the bottom of the oil storage barrel 4, the oil suction chamber is connected with the oil storage chamber through the oil suction port, and the oil storage barrel 4 is slidably arranged on the second party along the extension direction of the second party; the inlet end of the oil outlet pipeline 11 is arranged on the oil storage barrel 4 and connected with the oil suction chamber, and the outlet end is arranged on the fuel tank 1, and the distance between the two ends of the oil outlet pipeline 11 can change with the sliding of the oil storage barrel 4; the outlet end of the return oil pipeline 3 is arranged on the oil storage barrel 4 and connected with the oil suction chamber, and the inlet end is arranged on the fuel tank 1, and the distance between the two ends of the return oil pipeline 3 can change with the sliding of the oil storage barrel 4.

[0070] Specifically, the oil storage barrel 4 is a cylindrical structure for storing fuel. Generally, an umbrella valve or other valve controlled by buoyancy is provided at the bottom of the oil storage barrel 4. When the oil level in the oil storage cavity is higher than the oil level in the oil suction cavity, the fuel can enter the oil suction cavity of the oil storage barrel 4 from the fuel tank 1 through the umbrella valve to ensure that the oil level in the oil suction cavity is not lower than the oil level in the oil storage cavity.

[0071] In this embodiment, the entire oil storage barrel 4 is made slidable to drive the oil suction port to slide. During the sliding process of the oil storage barrel 4, the distance between the two ends of the oil outlet pipeline 11 and the distance between the two ends of the oil return pipeline 3 change accordingly to prevent the pipeline from affecting the sliding of the oil storage barrel 4.

[0072] When the vehicle goes uphill or downhill or tilts left or right, the oil storage barrel 4 can slide to the lowest point with the flow of oil, so that the oil suction port at the bottom of the oil storage barrel 4 is in real-time contact with the oil; the oil suction chamber of the oil storage barrel 4 will generally be filled with oil from the oil storage chamber through the oil suction port, and has a certain weight, thereby ensuring the sliding response sensitivity, prompting the oil storage barrel 4 to slide following the oil, without the need for additional counterweights, and simplifying the structure; at the same time, the oil suction port can absorb more oil into the oil suction chamber, and then output it to the engine and other fuel equipment through the oil outlet pipeline 11, thereby improving the smoothness of the oil outlet pipeline 11 and further reducing the problem of insufficient vehicle power or even stalling due to poor oil suction.

[0073] Alternatively, the oil suction structure of the present application may also not include the oil storage barrel 4, and an oil suction port may be directly formed through the inlet end of the oil outlet pipeline 11 to directly suck the oil in the oil storage chamber; at this time, since the pipeline is relatively light, a counterweight block is needed to ensure the follow-up of the oil suction port and the oil.

[0074] In order to facilitate assembly, the oil suction structure further includes a fixed plate 2 arranged on the top of the fuel tank 1, and the outlet end of the oil outlet pipeline 11 and the inlet end of the oil return pipeline 3 are both arranged on the fixed plate 2. During assembly, the outlet end of the oil outlet pipeline 11 and the inlet end of the oil return pipeline 3 are installed on the fixed plate 2, and then the fixed plate 2 is installed on the top of the fuel tank 1, which is simple to operate.

[0075] The oil suction structure of the present embodiment is an assembly structure, comprising an oil outlet pipeline 11, an oil return pipeline 3, an oil storage barrel 4 and a fixed plate 2; wherein the fixed plate 2 is located at the top and fixed on the fuel tank 1; the oil outlet pipeline 11 is a connecting pipeline from the oil storage barrel 4 to the fixed plate 2, which is used for the oil outlet of the whole vehicle supply system, and the distance between its two ends can be increased or decreased with the oil storage barrel 4; the oil return pipeline 3 is another connecting pipeline from the oil storage barrel 4 to the fixed plate 2, which is used for the oil return of the whole vehicle supply system, and the distance between its two ends can be increased or decreased with the oil storage barrel 4.

[0076] Preferably, the oil outlet pipeline 11 and the oil return pipeline 3 are both coil spring tubes. In this way, the oil outlet pipeline 11 and the oil return pipeline 3 connected to the oil storage barrel 4 both adopt a spiral structure. The spiral structure pipeline can expand and contract with the sliding of the oil storage barrel 4, absorb the displacement generated by the movement of the oil storage barrel 4, and avoid the pipeline from being entangled and affecting the sliding of the oil storage barrel 4.

[0077] In order to further simplify the assembly operation, an oil suction channel, an oil outlet channel, an oil return channel and an ejection valve are provided in the oil storage barrel 4; wherein: the oil suction channel is located at the bottom of the oil storage barrel 4, and its oil inlet forms the oil suction port; the oil inlet of the oil outlet channel is connected to the oil suction chamber, and the oil outlet is connected to the inlet end of the oil outlet pipeline 11; the oil inlet of the return oil channel is connected to the outlet end of the return oil pipeline 3; the ejection valve is located at the bottom of the oil storage barrel 4, its first inlet is connected to the oil outlet of the oil suction channel, the second inlet is connected to the oil outlet of the oil return channel, and the outlet is connected to the oil suction chamber.

[0078] In this embodiment, the oil storage barrel 4 is internally integrated with an oil suction channel, an oil outlet channel, an oil return channel, an ejection valve, and an umbrella valve (not shown in the figure). The oil storage barrel 4 is connected to the fuel tank 1 to provide an oil outlet and oil return interface, and a sliding mounting structure is provided on the outside of the oil storage barrel 4. During installation, the inlet end of the oil outlet pipeline 11 is directly assembled to the interface formed by the oil outlet of the oil outlet channel, and the outlet end of the oil return pipeline 3 is directly assembled to the interface formed by the oil inlet of the oil return channel, eliminating the step of adjusting the length of the oil outlet pipeline 11 and the oil return pipeline 3 extending into the oil storage barrel 4, facilitating assembly, and having higher product precision. The reliability of the integrated structure is better and the cost can be reduced.

[0079] An ejection valve is provided at the bottom of the oil storage barrel 4. By using the Venturi principle, when there is oil return in the oil return channel, the ejection effect of the ejection valve can be triggered, and the fuel in the fuel cavity can be ejected into the oil suction cavity of the oil storage barrel 4 through the oil suction channel, increasing the amount of fuel in the oil storage barrel 4, making the oil suction cavity of the oil storage barrel 4 full of liquid in real time, increasing the oil level, and making the oil output more sufficient. Of course, the present application can also adopt other structures other than the ejection valve that can prompt the oil to enter the oil suction cavity so that the oil suction cavity is filled with oil, and the present application does not make specific limitations here.

[0080] In general, the working principle of the vehicle fuel system provided in the embodiment of the present application is as follows:

[0081] ①, when the vehicle is in an uphill condition, due to gravity, the fuel will flow to the rear end of the fuel tank 1, and the oil storage barrel 4 will slide backward along the uphill and downhill slide rails 12 together with the fuel. At this time, the longitudinal telescopic spring 7 at the rear is compressed, so that the oil storage barrel 4 stops at the lowest position and keeps a certain distance from other parts (sliding support frame 5, inner wall of the oil storage chamber, etc.) to avoid collision and noise, thereby realizing the follow-up function of the oil suction port and the fuel in the uphill condition;

[0082] ② When the vehicle is in a downhill condition, due to gravity, the fuel will flow to the front end of the fuel tank 1. At this time, the oil storage barrel 4 slides forward along the uphill and downhill slide rails 12 together with the fuel. At this time, the front longitudinal telescopic spring 7 is compressed, so that the oil storage barrel 4 stops at the lowest position and maintains a certain distance from other parts (sliding support frame 5, inner wall of the oil storage cavity, etc.) to avoid collision and noise, thereby realizing the follow-up function of the oil suction port and the fuel in the downhill condition;

[0083] ③. When the vehicle is in a right-leaning condition, due to gravity, the fuel will flow to the right side of the fuel tank 1. At this time, the oil storage barrel 4 and the uphill and downhill slide rails 12 slide to the right along the left and right tilting slide rails 6 together with the fuel. At this time, the right side transverse telescopic spring 10 is compressed, so that the oil storage barrel 4 stops at the lowest position and keeps a certain distance from other parts to avoid collision and noise, thereby realizing the follow-up function of the oil suction port and the fuel in the right-leaning condition;

[0084] ④. When the vehicle is in a left-leaning condition, due to gravity, the fuel will flow to the left side of the fuel tank 1. At this time, the oil storage barrel 4 and the uphill and downhill slide rails 12 slide to the left along the left and right tilting slide rails 6 together with the fuel. At this time, the left lateral telescopic spring 10 is compressed, so that the oil storage barrel 4 stops at the lowest position and keeps a certain distance from other parts to avoid collision and noise, thereby realizing the follow-up function of the oil suction port and the fuel in the left-leaning condition;

[0085] ⑤. When the uphill working condition and the left-leaning working condition occur at the same time, the above sequence numbers ① and ④ occur at the same time;

[0086] ⑥. When the uphill working condition and the right leaning working condition occur at the same time, the above sequence numbers ① and ③ occur at the same time;

[0087] ⑦. When the downhill working condition and the left leaning working condition occur at the same time, the above sequence numbers ② and ④ occur at the same time;

[0088] ⑧. When the downhill working condition and the right leaning working condition occur at the same time, the above sequence numbers ② and ③ occur at the same time;

[0089] To sum up, no matter which tilt condition the vehicle is in, the uphill condition, the downhill condition, the uphill left tilt condition, the uphill right tilt condition, the downhill left tilt condition, or the downhill right tilt condition, the follow-up oil suction system of the vehicle fuel system formed by the oil storage barrel 4, the front and rear sliding guide structures, and the left and right sliding guide structures can keep in sync with the fuel flow direction, ensuring that the oil suction port is in full contact with the oil, thereby avoiding the problem of insufficient vehicle power or flameout caused by poor oil suction.

[0090] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.

[0091] The block diagrams of the devices, apparatuses, equipment, and systems involved in this application are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagram. As will be appreciated by those skilled in the art, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open words, referring to "including but not limited to", and can be used interchangeably with them. The words "or" and "and" used here refer to the words "and / or" and can be used interchangeably with them, unless the context clearly indicates otherwise. The words "such as" used here refer to the phrase "such as but not limited to", and can be used interchangeably with them.

[0092] It should also be noted that in the apparatus, device and method of the present application, each component or each step can be decomposed and / or recombined. Such decomposition and / or recombination should be regarded as equivalent solutions of the present application.

[0093] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0094] It should be understood that the qualifiers "first", "second", "third", "fourth", "fifth" and "sixth" used in the description of the embodiments of the present application are only used to more clearly explain the technical solutions and cannot be used to limit the scope of protection of the present application.

[0095] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

Claims

1. A vehicle fuel system, characterized in that: include: A fuel tank having an oil storage cavity for storing oil, wherein the fuel tank is installed on a vehicle; An oil suction structure, having an oil suction port capable of sucking oil in the oil storage cavity, and the oil suction structure is arranged on the fuel tank; A front-to-back sliding guide structure extending in the longitudinal direction of the vehicle and used to guide the oil suction port to slide forward and backward along the longitudinal direction of the vehicle as the oil in the oil storage chamber flows forward and backward; A left-right sliding guide structure extending in the transverse direction of the vehicle and used to guide the oil suction port to slide left-right in the transverse direction of the vehicle as the oil in the oil storage cavity flows left-right; Among them, the first of the front and rear sliding guide structures and the left and right sliding guide structures is fixedly arranged in the oil storage cavity, the second is slidably arranged on the first along the extension direction of the first, and the oil suction port is slidably arranged on the second along the extension direction of the second.

2. The vehicle fuel system according to claim 1, characterized in that: It also includes a sliding support frame, which is fixedly arranged at the bottom of the oil storage cavity, and the first one is fixed on the sliding support frame.

3. The vehicle fuel system according to claim 2, characterized in that: The first one is the left-right sliding guide structure, and the second one is the front-back sliding guide structure; Wherein, the left-right sliding guide structure comprises left-right inclined slide rails, which are fixedly arranged on the sliding support frame along the transverse direction of the vehicle; and left-right sliding members, which are slidably arranged on the left-right inclined slide rails along the transverse direction of the vehicle; The front and rear sliding guide structure includes uphill and downhill slide rails fixedly arranged on the left and right slide members along the longitudinal direction of the vehicle; front and rear slide members slidably arranged on the uphill and downhill slide rails along the longitudinal direction of the vehicle, and the oil suction port is arranged on the front and rear slide members.

4. The vehicle fuel system according to claim 3, characterized in that: The left-right sliding guide structure further includes left-right sliding buffers for buffering sliding impact forces of the left-right sliding members; The front-rear sliding guide structure also includes front-rear sliding buffers for buffering the sliding impact force of the front-rear sliding members.

5. The vehicle fuel system according to claim 4, characterized in that: The left and right inclined slide rails include two parallel transverse polished rods; the left and right sliding members include two transverse sliding sleeves, which are sleeved on the two transverse polished rods in a one-to-one correspondence; The uphill and downhill slide rails include two longitudinal polished rods arranged in parallel, and the longitudinal polished rods are connected between the two transverse sliding sleeves; the front and rear sliding members include two longitudinal sliding sleeves, which are sleeved on the two longitudinal polished rods in a one-to-one correspondence.

6. The vehicle fuel system according to claim 5, characterized in that: The left and right sliding buffers include four transverse telescopic springs, each of the transverse polished rods is sleeved with two transverse telescopic springs, and the two transverse telescopic springs are respectively located on both sides of the transverse sliding sleeve; The front and rear sliding buffers include four longitudinal telescopic springs. Two longitudinal telescopic springs are sleeved on each longitudinal polished rod, and the two longitudinal telescopic springs are respectively located on both sides of the longitudinal sliding sleeve.

7. The vehicle fuel system according to any one of claims 2 to 6, characterized in that: The sliding support frame is an annular frame that is fitted and fixed around the bottom of the oil storage cavity.

8. The vehicle fuel system according to any one of claims 1 to 6, characterized in that: The oil absorption structure comprises: An oil storage barrel, comprising an oil suction chamber and the oil suction port located at the bottom of the oil storage barrel, the oil suction chamber is connected with the oil storage chamber through the oil suction port, and the oil storage barrel is slidably arranged on the second member along the extension direction of the second member; An oil outlet pipeline, whose inlet end is arranged on the oil storage barrel and communicates with the oil suction chamber, and whose outlet end is arranged on the fuel tank, and the distance between the two ends of the oil outlet pipeline can be changed as the oil storage barrel slides; The oil return pipeline has an outlet end arranged on the oil storage barrel and communicated with the oil suction chamber, and an inlet end arranged on the fuel tank. The distance between the two ends of the oil return pipeline can be changed as the oil storage barrel slides.

9. The vehicle fuel system according to claim 8, characterized in that: The oil suction structure further comprises a fixed plate arranged on the top of the fuel tank, and the outlet end of the oil outlet pipeline and the inlet end of the oil return pipeline are both arranged on the fixed plate; And / or, the oil outlet pipeline and the oil return pipeline are both spiral spring tubes.

10. The vehicle fuel system according to claim 8, characterized in that: The oil storage barrel is provided with an oil suction channel, an oil outlet channel, an oil return channel and an injection valve; wherein: The oil suction channel is located at the bottom of the oil storage barrel, and its oil inlet forms the oil suction port; The oil inlet of the oil outlet channel is communicated with the oil suction chamber, and the oil outlet is communicated with the inlet end of the oil outlet pipeline; The oil inlet of the oil return channel is in communication with the outlet end of the oil return pipeline; The ejection valve is located at the bottom of the oil storage barrel, a first inlet of the ejection valve is communicated with the oil outlet of the oil suction channel, a second inlet is communicated with the oil outlet of the oil return channel, and an outlet is communicated with the oil suction chamber.

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