CN211524974U

CN211524974U - Engine fuel temperature regulating system

Info

Publication number: CN211524974U
Application number: CN202020135995.3U
Authority: CN
Inventors: 刘祯; 余翼; 吴华伟; 梅雪晴; 丁华锋; 万锐
Original assignee: Hubei University of Arts and Science
Current assignee: Hubei Saiensi Science & Technology Co ltd
Priority date: 2020-01-20
Filing date: 2020-01-20
Publication date: 2020-09-18
Anticipated expiration: 2030-01-20

Abstract

The utility model discloses an engine fuel temperature governing system, include: the tail gas treatment device comprises a tail gas inlet pipe, a tail gas outlet pipe and a regulating pipe structure which are sequentially communicated; the regulating pipe structure comprises a regulating pipeline communicated with the tail gas inlet pipe and the tail gas outlet pipe, and a tail gas heat exchange device arranged on the regulating pipeline; the fuel oil treatment device comprises a gas supply pipeline communicated with the tail gas outlet pipe, a fuel oil processor communicated with the gas supply pipeline and an exhaust pipeline communicated with the fuel oil processor, wherein the fuel oil processor is respectively provided with a fuel oil inlet and a fuel oil outlet; and a fuel storage tank in communication with the fuel outlet. The utility model provides an engine fuel temperature regulation system aims at solving the conventional art, and the heating method energy consumption of the experimental oil of engine is high, and the temperature is uncontrollable, and has increaseed the problem of environmental pollution degree to a certain extent.

Description

Engine fuel temperature regulating system

Technical Field

The utility model relates to an engine fuel processing apparatus technical field specifically is an engine fuel temperature governing system.

Background

Since the 21 st century, China's economic construction has drawn attention. However, with the rapid increase of economy, the energy consumption of China is increasing day by day. As of 2000, the total gasoline consumption in China is increased from 7500 million tons to 1.6 million tons greatly.

At present, the rapid growth of Chinese economy is realized mainly by means of the large consumption of resources and the huge destruction of the environment. The energy utilization efficiency of China is low, and the energy consumption of GDP in the Chinese unit in 2018 is about 4 times that of the United states, 6 times that of Japan and 2.5 times that of the world average level. Therefore, the economic development of China consumes a large amount of energy and pays a very heavy environmental cost, and energy conservation and emission reduction are imperative.

Fossil fuels have long been the dominant position in the energy structure of our country. At present, the energy structure of China is unreasonable, but as fossil energy is abundant and other energy is deficient, China still uses fossil fuel as main energy for a long time. However, the utilization efficiency of fossil fuels is low and the pollution is serious at present, so that the attention must be paid to how to improve the utilization rate of energy and effectively protect the environment, and under the large environment with the aim of energy conservation and emission reduction, the trend that the economic benefit is poor and the environmental pollution is serious and the like caused by low energy utilization efficiency can be effectively relieved by improving the utilization rate of automobile fuels.

At present, the automobile production is increasing day by day, automobile manufacturers must carry out sampling detection and relevant test detection working conditions from the time of mass production of engines to the time of marketing. At present, the fuel oil heating mode of relevant tests in the market is generally electric/fossil energy combustion heating, and the mode has the advantages of high energy consumption, uncontrollable temperature and increased environmental pollution degree to a certain extent. Therefore, the fuel oil heating mode with energy conservation and emission reduction is one of the technical problems which are urgently needed to be solved by technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a novel zeolite runner clearance system, aim at solving in the conventional art, the heating method energy consumption of the experimental oil of engine is high, and the temperature is uncontrollable, and has increaseed the problem of environmental pollution degree to a certain extent.

In order to achieve the above object, the utility model provides a following technical scheme:

an engine fuel temperature regulation system comprising:

the tail gas treatment device comprises a tail gas inlet pipe, a tail gas outlet pipe and a regulating pipe structure which are sequentially communicated; the regulating pipe structure comprises a regulating pipeline communicated with the tail gas inlet pipe and the tail gas outlet pipe, and a tail gas heat exchange device arranged on the regulating pipeline;

the fuel oil treatment device comprises a gas supply pipeline communicated with the tail gas outlet pipe, a fuel oil processor communicated with the gas supply pipeline and an exhaust pipeline communicated with the fuel oil processor, wherein the fuel oil processor is respectively provided with a fuel oil inlet and a fuel oil outlet; and the number of the first and second groups,

a fuel storage tank in communication with the fuel outlet.

Optionally, the tail gas heat exchange device comprises a heat exchange shell communicated with and arranged on the adjusting pipeline, and a heat exchange pipeline arranged in the heat exchange shell, wherein a heat exchange inlet and a heat exchange outlet are respectively arranged at two ends of the heat exchange pipeline, and the heat exchange inlet and the heat exchange outlet are circularly communicated with a heat exchange medium source.

Optionally, the adjusting pipeline includes a plurality of adjusting branch pipes, and is a plurality of adjusting branch pipe includes at least one first adjusting branch pipe and at least one second adjusting branch pipe, every first adjusting branch pipe both ends directly with the tail gas intake pipe with the tail gas outlet duct intercommunication, every all be provided with on the second adjusting branch pipe tail gas heat transfer device.

Optionally, the intercooler system for engine testing further comprises a controller;

and the first regulating branch pipe is provided with a gas amount control valve, and the gas amount control valve is electrically connected with the controller.

Optionally, a first temperature detection mechanism is further arranged on the tail gas outlet pipe, and the first temperature detection mechanism is electrically connected with the controller;

and the tail gas outlet pipe is also provided with an air outlet control valve which is electrically connected with the controller.

Optionally, the fuel processor comprises a processor housing communicated between the air supply pipeline and the exhaust pipeline, and a fuel circulation pipeline arranged in an inner cavity of the processor housing, and two ends of the fuel circulation pipeline are respectively communicated with the fuel inlet and the fuel outlet.

Optionally, the fuel circulation pipeline comprises a plurality of fuel circulation branch pipes arranged in a crossed manner, and two ends of each fuel circulation branch pipe are respectively communicated with the fuel inlet and the fuel outlet.

Optionally, a stirring device is arranged at the bottom of the fuel storage tank;

agitating unit is including locating stirring vane in the fuel storage case, and with the driving motor that stirring vane connects, driving motor locates outside the fuel storage case.

Optionally, the fuel processor further comprises a temperature control structure for regulating the flow of exhaust gas into the fuel processor.

Optionally, the temperature control structure includes a second temperature detection mechanism disposed in the fuel storage tank, and a second air volume control valve disposed on the air supply pipeline, and the second temperature detection mechanism is electrically connected to the second air volume control valve.

In the technical scheme provided by the utility model, the adjusting pipeline gives a certain circulation time for the tail gas, the tail gas heat exchange device arranged on the adjusting pipeline can adjust the temperature of the tail gas, reduce the temperature of the tail gas, play the role of energy conservation and emission reduction, and also prepare for the next utilization of the tail gas; the fuel oil treatment device enables the treated tail gas and the engine fuel oil to carry out sufficient heat exchange, and the temperature of the fuel oil is increased for the next engine test. At present, the fuel oil heating mode of relevant tests in the market is generally electric/fossil energy combustion heating, and the mode has the advantages of high energy consumption, uncontrollable temperature and increased environmental pollution degree to a certain extent. The utility model provides a fuel heating method reaches energy saving and emission reduction's effect with dumped engine exhaust waste utilization, and heats respond well, is worth further popularization.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic diagram of an embodiment of an engine fuel temperature regulation system according to the present invention;

fig. 2 is a schematic diagram of a structure of an exhaust gas treatment device according to an embodiment of the system for regulating the temperature of engine fuel according to the present invention.

FIG. 3 is a schematic diagram of a fuel treatment device according to an embodiment of the present invention;

fig. 4 is a schematic diagram of the gas amount and the control valve of the fuel treatment device according to the embodiment of the fuel temperature control system of the engine provided by the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				1000	Engine fuel temperature regulating system	100	Tail gas treatment device
110	Tail gas inlet pipe	120	Tail gas outlet pipe
				121	Air outlet control valve	122	First temperature detection mechanism
130	Structure of regulating tube	131	Regulating pipeline
				132	Tail gas heat exchange device	133	First regulating branch pipe
134	Second regulating branch pipe	135	First air quantity control valve
				136	Heat exchange shell	137	Heat exchange pipeline
138	Heat exchange inlet	139	Heat exchange outlet
				200	Fuel oil treatment device	210	Air supply pipeline
211	Second air volume control valve	220	Fuel processor
				221	Fuel inlet	222	Fuel outlet
223	Processor outer casing	224	Fuel oil circulating pipeline
				225	Fuel circulation branch pipe	300	Fuel storage tank
310	Second temperature detection mechanism	320	Stirring device
				321	Stirring blade	322	Driving motor
400	Controller	500	Temperature control structure

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

In view of this, the present invention provides an engine fuel temperature adjusting system, and fig. 1 is a schematic structural diagram of an embodiment of the engine fuel temperature adjusting system provided by the present invention; FIG. 2 is a schematic diagram of an exhaust gas treatment device according to an embodiment of the present invention; FIG. 3 is a schematic diagram of a fuel treatment device according to an embodiment of the present invention; fig. 4 is a schematic diagram of the gas amount and the control valve of the fuel treatment device according to the embodiment of the fuel temperature control system of the engine provided by the present invention.

Referring to fig. 1, the present embodiment provides an engine fuel temperature adjustment system 1000, including: an exhaust gas treatment device 100, a fuel treatment device 200, and a fuel storage tank 300. The tail gas treatment device 100 comprises a tail gas inlet pipe 110, a tail gas outlet pipe 120 and a regulating pipe structure 130 which are sequentially communicated; the adjusting pipe structure 130 comprises an adjusting pipe 131 for communicating the tail gas inlet pipe 110 and the tail gas outlet pipe 120, and a tail gas heat exchange device 132 arranged on the adjusting pipe 131; the fuel oil treatment device 200 comprises a gas supply pipeline 210 communicated with the tail gas outlet pipe 120, a fuel oil processor 220 communicated with the gas supply pipeline 210, and an exhaust pipeline 230 communicated with the fuel oil processor 220, wherein the fuel oil processor 220 is respectively provided with a fuel oil inlet 221 and a fuel oil outlet 222; the fuel storage tank 300 is in communication with the fuel outlet 222 for storing the treated fuel. At present, the fuel oil heating mode of relevant tests in the market is generally electric/fossil energy combustion heating, and the mode has the advantages of high energy consumption, uncontrollable temperature and increased environmental pollution degree to a certain extent. The utility model provides a fuel heating method reaches energy saving and emission reduction's effect with dumped engine exhaust waste utilization, and heats respond well, is worth further popularization.

Further, the tail gas heat exchanging device 132 comprises a heat exchanging shell 136 communicated with the regulating pipe 131 and a heat exchanging pipe 137 arranged in the heat exchanging shell 136, two ends of the heat exchanging pipe 137 are respectively provided with a heat exchanging inlet 138 and a heat exchanging outlet 139, and the heat exchanging inlet 138 and the heat exchanging outlet 139 are circularly communicated with a heat exchanging medium source. In addition, a flow control valve is further arranged on the heat exchange pipeline 137, so that the flow speed and flow of the heat exchange medium can be controlled, and the heat exchange effect can be indirectly adjusted. Generally, the heat exchange medium is a cold liquid with a large specific heat capacity, such as cold water; the cold liquid passes through the heat exchange pipe 137 at the maximum flow rate allowed by the tail gas heat exchange device 132 under the pressure of the electric pump, and the cold liquid can rapidly exchange heat with the tail gas, so that the effect of reducing the temperature of the tail gas is achieved. As shown in fig. 2, heat exchange pipes 137 in this embodiment are arranged in parallel with each other to increase heat exchange efficiency, and it should be noted that the heat exchange pipes may be arranged in various ways, and specifically, may be arranged in a curved loop of a single heat exchange pipe, which is not limited by the present invention.

Specifically, the adjusting pipe 131 includes a plurality of adjusting branch pipes, the plurality of adjusting branch pipes include at least one first adjusting branch pipe 133 and at least one second adjusting branch pipe 134, two ends of each first adjusting branch pipe 133 are directly communicated with the exhaust gas inlet pipe 110 and the exhaust gas outlet pipe 120, and each second adjusting branch pipe 134 is provided with the exhaust gas heat exchanging device 132. By the arrangement, the flow stroke of the tail gas is increased, so that the temperature of the tail gas can be remarkably reduced in the process of flowing in the pipeline; in addition, the plurality of second regulating branch pipes 134 are provided with the tail gas heat exchange devices 132, so that the cooling efficiency of the tail gas can be remarkably improved; finally, the required heating temperature of fuel is different among the engine test, and tail gas heat transfer device 132 can carry out the cooling that is showing to tail gas, and the cooling is difficult to control, and when the cooling was too big, tail gas just can't satisfy the required best temperature of fuel heating. In this technical scheme, through setting up the first regulation branch pipe 133 with tail gas intake pipe 110 and tail gas outlet pipe 120 intercommunication, can be so that initial temperature's tail gas and the tail gas of second regulation branch pipe 134 after the cooling mix, raise the temperature to reach the optimal implementation effect.

Referring to fig. 1, in the present embodiment, the adjusting pipe 131 includes an adjusting branch pipe, which includes a first adjusting branch pipe 133 and a second adjusting branch pipe 134. This does the utility model provides a simplest implementation mode among the technical scheme, under this kind of condition, heat exchange pipeline 137's structure is comparatively succinct, and also has better working effect. In addition, it should be noted that, in order to guarantee the operation life of the whole system, in this technical scheme, the adjusting pipe 131 is designed to be a steel pipe, and meanwhile, the adjusting pipe 131 is designed to be a multi-section detachable pipe aiming at the problem of carbon deposition of tail gas, so that a user can conveniently detach and clean the carbon deposition layer.

As described above, the heating temperatures required by the fuel in the engine test are different, in this embodiment, in order to ensure matching with different heating temperatures, the engine fuel temperature adjustment system 1000 further includes a controller 400, the first adjustment branch pipe 133 is provided with the first air quantity control valve 135, and the first air quantity control valve 135 is electrically connected to the controller 400. And a first temperature detection mechanism 121 is further arranged on the tail gas outlet pipe 120, and the first temperature detection mechanism 121 is electrically connected with the controller 400. It should be noted that the working principle is as follows: tail gas exhausted by the engine enters the structure of the adjusting pipeline 131 from a tail gas inlet, is divided into two parts, and one part of the tail gas enters the second adjusting branch pipe 134 and the tail gas heat exchange device 132 and is cooled by cooling liquid; the other part of the tail gas is mixed with the cooled tail gas through the first adjusting branch pipe 133, the tail gas with the mixed temperature passes through the first temperature detection mechanism 121, and when the temperature of the mixed gas is higher than or lower than the set temperature, the controller 400 controls the opening/closing size of the first air quantity control valve 135 according to the actual situation, so that the gas with the initial temperature and the gas with the cooled temperature are fully mixed until the signal fed back by the first temperature detection mechanism 121 is matched with the set temperature signal, and the optimal implementation effect is achieved.

Referring to fig. 4, since the air volume control valve is a vulnerable component, it is more easily damaged in a high temperature environment and easily deposits carbon. In consideration of the high overall disassembly cost of the valve control system, in the embodiment, the air volume control valve is designed to be composed of an upper part (a circuit and a pneumatic control device), a middle part (a manual lever) and a lower part (a pneumatic valve), gears with the same specification are respectively designed at the lower end of the upper part, the upper end and the lower end of the middle part and the upper end of the lower part, and are meshed with each other; the torque force provided by the pneumatic control device is transmitted to the lower pneumatic valve through the gear to control the opening of the pneumatic valve; and the manual lever in the middle layer is designed to manually control the opening and closing of the valve when the pneumatic control device fails. Because tolerance control valve and control method are prior art, the utility model discloses will not be repeated again.

Further, an exhaust control valve 111 is further disposed on the exhaust gas outlet pipe 120, and the exhaust control valve 111 is electrically connected to the controller 400. When the first temperature detecting mechanism 121 detects that the temperature of the mixed gas is higher than or lower than the set temperature, the controller 400 controls the gas outlet control valve 111 to be in a closed state, at this time, the controller 400 controls the first gas quantity control valve 135 to open and close, so that the gas at the initial temperature and the gas after temperature reduction are fully mixed, and until a signal fed back by the first temperature detecting mechanism 121 is matched with the set temperature signal, the controller 400 controls the gas outlet control valve 111 to be opened, so that the fully mixed tail gas is discharged and enters the fuel oil processing device 200. In addition, the flow control valve that can control heat transfer medium's velocity of flow and flow mentioned above also is connected with controller 400 electricity, specifically can adjust according to heat exchange efficiency, the utility model discloses no longer describe in detail.

Referring to fig. 2, in the embodiment, the fuel processor 220 includes a processor casing 223 communicated between the air supply pipe 210 and the exhaust pipe 230, and a fuel circulation pipe 224 disposed in an inner cavity of the processor casing 223, wherein two ends of the fuel circulation pipe 224 are respectively communicated with the fuel inlet 221 and the fuel outlet 222. The fuel oil circulates in the circulation pipeline, and the treated tail gas is in contact with the fuel oil in the processor shell 223 to perform sufficient heat exchange, so that the temperature of the fuel oil is increased to meet the test requirement of the engine.

Specifically, referring to fig. 3, the fuel circulation pipe 224 includes a plurality of fuel circulation branch pipes 225 arranged in a crossing manner, and both ends of each fuel circulation branch pipe 225 are respectively communicated with the fuel inlet 221 and the fuel outlet 222. In the practical application of the heat exchanger, the internal pipelines are generally arranged in an alignment sequence mode and a cross arrangement mode; for the reinforcing heat transfer effect, the fluid transversely passes through inner passage usually, but when the pipeline adopted the alignment order to arrange, because the swirl wake that forms is influenced by the front-row pipeline to the existence, can lead to back row pipeline to receive the fluid contact not enough, influence heat transfer effect. According to a large number of research summaries, the cross arrangement of the pipes can avoid the above situation, and the convection heat exchange efficiency of the cross arrangement is 1.25 times higher than that of the alignment sequence arrangement. In this embodiment, the fuel circulation pipes 224 are arranged in an equilateral triangle in a crossing manner, and the arrangement mode of 6 vertical and 6 horizontal directions is adopted, so that the optimal heat exchange effect is ensured.

As mentioned above, the first temperature detecting mechanism 121 is disposed on the exhaust outlet 120 for detecting whether the temperature of the exhaust gas meets the requirement, and similarly, the fuel processing apparatus 200 further includes a temperature control structure 500, where the temperature control structure 500 is configured to adjust the flow of the exhaust gas entering the fuel processor 220, and indirectly control the speed and efficiency of heating the fuel by controlling the flow of the exhaust gas.

Specifically, the temperature control structure 500 includes a second temperature sensing mechanism 310 disposed in the fuel storage tank 300, and a second air volume control valve 211 disposed on the air supply pipe 210, and the second temperature sensing mechanism 310 is electrically connected to the second air volume control valve 211. It should be noted that, the temperature control structure 500 may include an independent controller to control the opening and closing of the second air volume control valve 211, and the controller 400 may also be electrically connected to the second temperature detection mechanism 310 and the second air volume control valve 211 to achieve the effect of separate control or common control, which is not limited by the present invention. The working principle is as follows: the second temperature detection mechanism 310 arranged in the fuel storage tank 300 detects the temperature of the fuel in the fuel storage tank 300, when the temperature of the fuel in the tank is higher than or lower than the set temperature, the second temperature detection mechanism 310 sends a signal to the controller, the controller can control the closing/opening size of the second air quantity control valve 211 according to the actual situation until the signal fed back by the second temperature detection mechanism 310 is matched with the set temperature signal, and the processed fuel can be used by the engine required by the experiment.

Considering that the specific heat capacity of the fuel is relatively high, the process of static heat exchange of the fuel with equal height and low temperature to temperature stabilization is slow, and errors are easy to occur, the stirring device 320 is arranged at the bottom of the fuel storage tank 300, the stirring device 320 comprises a stirring blade 321 arranged in the fuel storage tank 300 and a driving motor 322 connected with the stirring blade 321, and the driving motor 322 is arranged outside the fuel storage tank 300. The fuel of different temperatures can be sufficiently mixed by the agitating blade 321, so that the temperature of the fuel in the fuel storage tank 300 as a whole tends to be balanced.

The technical scheme provided by the utility model is mainly applied to the test of sampling under the environment with higher fuel temperature after the engine is produced in the automobile engine factory; as the tests in the market generally adopt a high-energy-consumption mode, such as heating water by using electric/fossil energy and heating fuel by using the water. The heating mode has high energy consumption and uncontrollable temperature, and increases the environmental pollution degree to a certain extent; and the utility model discloses a tail gas waste heat recovery utilizes the tactics to be assisted with the control by temperature change, when will strengthen the accurate nature of engine experiment demand, reached energy saving and emission reduction effect. The utility model discloses a popularization can alleviate the energy and supply lack the contradiction, does benefit to national economic development.

The above only is the preferred embodiment of the present invention, not so limiting the patent scope of the present invention, all under the concept of the present invention, the equivalent structure transformation made by the contents of the specification and the drawings is utilized, or the direct/indirect application is included in other related technical fields in the patent protection scope of the present invention.

Claims

1. An engine fuel temperature regulation system, comprising:

a fuel storage tank in communication with the fuel outlet.

2. The engine fuel temperature regulating system according to claim 1, wherein the exhaust gas heat exchanging device comprises a heat exchanging housing disposed on and in communication with the regulating pipe, and a heat exchanging pipe disposed in the heat exchanging housing, the heat exchanging pipe having a heat exchanging inlet and a heat exchanging outlet at two ends thereof, respectively, and the heat exchanging inlet and the heat exchanging outlet being in circulating communication with a heat exchanging medium source.

3. The engine fuel temperature regulating system of claim 2, wherein the regulating pipeline comprises a plurality of regulating branch pipes, the plurality of regulating branch pipes comprise at least one first regulating branch pipe and at least one second regulating branch pipe, two ends of each first regulating branch pipe are directly communicated with the exhaust gas inlet pipe and the exhaust gas outlet pipe, and the exhaust gas heat exchange device is arranged on each second regulating branch pipe.

4. The engine fuel temperature regulation system of claim 3, further comprising a controller;

and a first air quantity control valve is arranged on the first adjusting branch pipe and is electrically connected with the controller.

5. The engine fuel temperature regulating system according to claim 4, characterized in that a first temperature detecting mechanism is further arranged on the exhaust gas outlet pipe, and the first temperature detecting mechanism is electrically connected with the controller;

6. The engine fuel temperature regulation system of claim 1, wherein the fuel processor comprises a processor housing disposed between and in communication with the supply conduit and the exhaust conduit, respectively, and a fuel circulation conduit disposed within an interior chamber of the processor housing, the fuel circulation conduit having opposite ends in communication with the fuel inlet and the fuel outlet, respectively.

7. The engine fuel temperature regulation system of claim 6, wherein the fuel circulation pipe comprises a plurality of fuel circulation branch pipes arranged in a cross manner, and both ends of each fuel circulation branch pipe are respectively communicated with the fuel inlet and the fuel outlet.

8. The engine fuel temperature regulation system of claim 1, wherein the bottom of the fuel storage tank is provided with a stirring device;

9. The engine fuel temperature regulation system of claim 1, wherein the fuel processor further comprises a temperature control structure to regulate the flow of exhaust gas into the fuel processor.

10. The engine fuel temperature regulation system of claim 9, wherein the temperature control structure includes a second temperature detection mechanism provided in the fuel storage tank, and a second air flow control valve provided on the air supply conduit, the second temperature detection mechanism being electrically connected to the second air flow control valve.