Oil way system of engineering vehicle

Abstract

The utility model relates to the technical field of engineering vehicles, and discloses an oil way system of an engineering vehicle, the oil way system comprises a fuel heater, an oil tank and a controller, the oil tank comprises a tank body, a first cavity and a second cavity are formed in the tank body, the first cavity is used for storing high-grade fuel oil, the second cavity is used for storing low-grade fuel oil, and the controller is connected with the first cavity and the second cavity. A heating device is arranged in the first cavity and communicates with a cooling system of the engine, a first temperature detection device is arranged on the tank body, the first temperature detection device is used for detecting the environment temperature outside the oil tank and electrically connected with the controller, and the fuel oil heater communicates with the second cavity of the tank body and electrically connected with the controller. A water path of a cooling system of the engine passes through the fuel heater, and a third temperature detection device used for collecting the temperature of the engine is arranged in the engine. The problem of starting the engineering vehicle in a low-temperature environment can be solved more safely.

Description

Technical Field

[0001] The present application relates to the field of engineering vehicles, and in particular, to an oil circuit system for an engineering vehicle. Background Art

[0002] Engineering vehicles are non-road vehicles mainly used in mines and engineering. They are more durable and have a greater load capacity than ordinary trucks. In terms of structure, mining trucks and ordinary dump trucks do not seem to have much difference, just seem to be "bigger". In fact, mining trucks have an essential difference from ordinary dump trucks in terms of design concept. Ordinary dump trucks are designed for road transportation, while mining trucks are designed for mining operations. Therefore, the whole vehicle and its components of mining trucks are considered for the mining operation environment and are designed and manufactured for such users.

[0003] Due to the particularity of the working environment of engineering vehicles, especially in northern regions, the average winter temperature is about -10 to -30 degrees Celsius. In such low-temperature conditions, No. 0 diesel fuel will wax, resulting in poor fuel fluidity, difficult vehicle starting or even inability to start. Using diesel fuel with a lower freezing point will greatly increase the usage cost.

[0004] Currently, in order to solve the problem of starting engineering vehicles in low-temperature conditions, mostly the method of preheating the fuel in the fuel tank is adopted. However, the traditional fuel heating is an electric fuel heating device, which is prone to generate electric sparks and has a relatively high safety hazard. Utility Model Content

[0005] In order to more safely solve the problem of starting engineering vehicles in low-temperature environments, the present application provides an oil circuit system for an engineering vehicle.

[0006] An oil circuit system for an engineering vehicle provided by the present application adopts the following technical solutions:

[0007] An oil circuit system of an engineering vehicle, comprising a fuel heater, a fuel tank and a controller. The fuel tank includes a tank body, in which a first chamber and a second chamber are defined. The first chamber is communicated with a first oil outlet pipe and a first oil return pipe, and the second chamber is communicated with a second oil outlet pipe and a second oil return pipe. The first oil outlet pipe and the second oil outlet pipe are communicated with the engine's oil inlet pipeline through an oil inlet electromagnetic reversing valve, and the first oil return pipe and the second oil return pipe are communicated with the engine's oil return pipeline through an oil return electromagnetic reversing valve. The first chamber is used for storing high-grade fuel, and the second chamber is used for storing low-grade fuel. A heating device is arranged in the first chamber, and the heating device is communicated with the engine's cooling system. A first temperature detection device is arranged on the tank body, and the first temperature detection device is used for detecting the ambient temperature outside the fuel tank. The first temperature detection device is electrically connected to the controller. The fuel heater is respectively communicated with the first chamber and the second chamber through an oil suction electromagnetic reversing valve. The oil inlet electromagnetic reversing valve, the oil return electromagnetic reversing valve and the oil suction electromagnetic reversing valve are all electrically connected to the controller. A second temperature detection device is arranged in the first chamber, and the second temperature detection device is used for collecting the fuel temperature in the first chamber. The second temperature detection device is electrically connected to the controller. The water circuit of the engine's cooling system passes through the fuel heater, and a third temperature detection device for collecting the engine temperature is arranged in the engine.

[0008] By adopting the above technical solution, a first chamber and a second chamber are provided in the fuel tank. When the engineering vehicle starts, the first temperature detection device detects the ambient temperature outside the fuel tank. When the first temperature detection device detects that the ambient temperature is lower than the wax precipitation temperature of the high-grade fuel, the first temperature detection device transmits a signal to the controller, and the controller transmits signals to the inlet electromagnetic directional valve and the return electromagnetic directional valve, so that the second outlet pipe is communicated with the engine's inlet pipeline, and the second return pipe is communicated with the engine's return pipeline, so that the engine uses low-grade fuel to start. After the engine starts, the waste heat absorbed by the engine's cooling system is used to heat the high-grade fuel in the first chamber. When the second temperature detection device detects that the fuel temperature in the first chamber is higher than the wax precipitation temperature, the second temperature detection device transmits a signal to the controller, so that the first outlet pipe is communicated with the engine's inlet pipeline, and the first return pipe is communicated with the engine's return pipeline, and the engine uses high-grade fuel to work, reducing the working cost; before the engine starts, when the third temperature detection sensor detects that the temperature of the engine is lower than the temperature at which the engine can perform cold start at low temperature, the third temperature detection sensor transmits a signal to the fuel heater, so that the fuel heater absorbs the low-grade fuel in the second chamber for combustion, and uses the heat generated by the combustion to heat the engine's cooling system, so that the engine can meet the requirements of cold start at low temperature, and then supplies fuel to the engine to start, further reducing the possibility that the engine of the engineering vehicle cannot start normally in a low-temperature environment; in addition, during the use of the engineering vehicle, in many cases, the heating of the in-vehicle air conditioner needs to be ensured when the engine stops working. The fuel heater is communicated with the first chamber and the second chamber of the fuel tank body through the oil suction electromagnetic directional valve. When the engine is in a shutdown state, the fuel heater uses the high-grade fuel in the first chamber to heat the engine's cooling system, so that the in-vehicle air conditioner system can supply heat normally, reducing energy consumption.

[0009] Optionally, the volume of the first chamber is at least 3 times the volume of the second chamber.

[0010] By adopting the above technical solution, during the use of the engineering vehicle, the cost of low-grade fuel is high and it is only used in the low-temperature start stage, and the consumption is much less than that of high-grade fuel. Setting the volume of the first chamber to be larger than the volume of the second chamber, preferably at least more than 3 times, improves the rationality of the internal space distribution of the fuel tank.

[0011] Optionally, a vertical partition is included in the fuel tank body, and the first chamber and the second chamber are separated from each other by the vertical partition.

[0012] Optionally, the heating device includes a heat exchange tube assembly disposed in the first chamber. The heat exchange tube assembly is connected to a liquid inlet pipe and a liquid outlet pipe. The liquid inlet pipe is connected to the cooling system of the engine through a first water pump, and the liquid outlet pipe is connected to the cooling system of the engine.

[0013] Optionally, the fuel heater includes a combustion assembly and a heat exchange assembly. The combustion assembly is respectively connected to the first chamber and the second chamber of the box body through an oil suction electromagnetic reversing valve. The heat exchange assembly includes a plate heat exchange assembly and a second water pump. The water inlet end of the plate heat exchange assembly is connected to the cooling system of the engine through the second water pump. The heating device is connected to a six-way electromagnetic reversing valve. The liquid inlet pipe is connected to the main outlet port of the six-way electromagnetic reversing valve. The liquid outlet pipe is connected to the main return port of the six-way electromagnetic reversing valve. The first liquid inlet port of the six-way electromagnetic reversing valve is connected to the first water pump. The first liquid outlet port of the six-way electromagnetic reversing valve is connected to the cooling system of the engine. The water outlet end of the plate heat exchange assembly is respectively connected to the cooling system of the engine and the second liquid inlet port of the six-way electromagnetic reversing valve. The second liquid outlet port of the six-way electromagnetic reversing valve is connected to the water inlet end of the plate heat exchange assembly.

[0014] By adopting the above technical solution, when the third temperature detection sensor detects that the temperature of the engine is lower than the temperature at which the engine can be cold-started at low temperature, the third temperature detection sensor transmits a signal to the fuel heater, causing the fuel heater to suck the low-grade fuel in the second chamber for combustion, and using the heat generated by the combustion to heat the engine and the fuel in the first chamber respectively. After heating is completed, high-grade fuel is directly used to start the engineering vehicle, reducing the use of low-grade fuel.

[0015] Optionally, the water outlet end of the plate heat exchange assembly is connected to the second liquid inlet port of the six-way electromagnetic reversing valve through a one-way valve.

[0016] By adopting the above technical solution, the water outlet end of the plate heat exchange assembly is connected to the second liquid inlet port of the six-way electromagnetic reversing valve through a one-way valve. When it is necessary to heat the cooling system of the engine alone, this branch can be closed through the one-way valve, reducing heat waste.

[0017] Optionally, the water outlet end of the plate heat exchange assembly is respectively connected to the cooling system of the engine and the second liquid inlet port of the six-way electromagnetic reversing valve through a three-way valve. The three-way valve can adjust the flow rate of the water outlet end of the plate heat exchange assembly flowing to the cooling system of the engine and the second liquid inlet port of the six-way electromagnetic reversing valve.

[0018] By adopting the above technical solution, according to the engine heating demand and the fuel heating demand, the flow direction of the coolant heated by the fuel heater can be dynamically adjusted, and the emphasis on heating the engine and heating the fuel can be adjusted.

[0019] Optionally, at least one perforated partition is provided in the first chamber, and the perforated partition is used to divide the space in the first chamber.

[0020] By adopting the above technical solution, at least one perforated partition is provided in the first chamber. When the engineering vehicle is driving, starting, stopping, and turning on a bumpy road, the fuel in the fuel tank will shake, thereby generating fuel sloshing noise, which can be felt by the vehicle driver. The perforated partition is used to suppress the sloshing of the fuel.

[0021] Optionally, the perforated partition is provided with at least three openings in the up-down direction, and the opening area of at least some of the openings located below is smaller than the opening area of the openings located above.

[0022] Optionally, the second temperature detection device is located in the first chamber at a position far from the heating device.

[0023] By adopting the above technical solution, the second temperature detection device is arranged in the first chamber at a position far from the heating device, improving the accuracy of the temperature detection of the high-grade fuel.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. The fuel tank is provided with a first chamber and a second chamber. When the engineering vehicle starts, the first temperature detection device detects the ambient temperature outside the fuel tank. When the first temperature detection device detects that the ambient temperature is lower than the wax precipitation temperature of the high-grade fuel, the first temperature detection device transmits a signal to the controller, and the controller transmits a signal to the inlet oil solenoid directional valve and the return oil solenoid directional valve, so that the second outlet pipe is communicated with the engine's inlet oil pipeline, and the second return pipe is communicated with the engine's return oil pipeline, so that the engine uses low-grade fuel for starting. After the engine starts, the waste heat absorbed by the engine's cooling system is used to heat the high-grade fuel in the first chamber. When the second temperature detection device detects that the fuel temperature in the first chamber is higher than the wax precipitation temperature, the second temperature detection device transmits a signal to the controller, so that the first outlet pipe is communicated with the engine's inlet oil pipeline, and the first return pipe is communicated with the engine's return oil pipeline, and the engine uses high-grade fuel for operation, reducing the operating cost; before the engine starts, when the third temperature detection sensor detects that the temperature of the engine is lower than the temperature at which the engine can perform low-temperature cold start, the third temperature detection sensor transmits a signal to the fuel heater, so that the fuel heater absorbs the low-grade fuel in the second chamber for combustion, and the heat generated by the combustion is used to heat the engine's cooling system, enabling the engine to meet the requirements of low-temperature cold start, and then supplying fuel to the engine for starting, further reducing the possibility that the engine of the engineering vehicle cannot start normally in a low-temperature environment;

[0026] 2. During the use of construction vehicles, in many cases, the heating of the in-vehicle air conditioner needs to be ensured even when the engine stops working. The fuel heater is respectively connected to the first chamber and the second chamber of the fuel tank through an oil suction electromagnetic reversing valve. When the engine is in a shutdown state, the fuel heater uses the high-grade fuel in the first chamber to heat the engine's cooling system, enabling the in-vehicle air conditioning system to supply heat normally and reducing energy consumption.

[0027] 3. When the third temperature detection sensor detects that the engine temperature is lower than the temperature at which the engine can be cold-started at low temperature, the third temperature detection sensor transmits a signal to the fuel heater, causing the fuel heater to draw in the low-grade fuel in the second chamber for combustion. The heat generated by the combustion is used to heat the engine and the fuel in the first chamber respectively. After the heating is completed, the high-grade fuel is directly used to start the construction vehicle, reducing the use of low-grade fuel. Description of the Drawings

[0028] The drawings described herein are used to provide a further understanding of the present application and form a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation of the present application. In the drawings:

[0029] Figure 1 is a connection schematic diagram of the oil circuit structure in an embodiment of the present application;

[0030] Figure 2 is a connection schematic diagram of the coolant circulation structure in an embodiment of the present application;

[0031] Figure 3 is an overall structure schematic diagram of the fuel tank part in an embodiment of the present application (some structures are not shown);

[0032] Figure 4 is a structure schematic diagram inside the fuel tank in an embodiment of the present application.

[0033] Reference numerals: 100, engine; 110, cooling module; 120, inlet oil electromagnetic reversing valve; 130, return oil electromagnetic reversing valve; 140, inlet oil pipeline; 150, return oil pipeline; 200, fuel heater; 210, combustion assembly; 211, oil suction electromagnetic reversing valve; 220, heat exchange assembly; 230, second water pump; 300, fuel tank; 310, first chamber; 311, first oil outlet pipe; 312, first oil return pipe; 320, second chamber; 321, second oil outlet pipe; 322, second oil return pipe; 330, perforated partition; 340, heating device; 350, first water pump; 360, six-way electromagnetic reversing valve; 370, vertical partition; 400, second temperature detection device. Detailed Embodiments

[0034] To more clearly illustrate the overall concept of this application, the following is a further detailed description of this application in conjunction with the attached Figures 1-4 drawings.

[0035] In the following description, many specific details are set forth in order to provide a thorough understanding of this application. However, this application may be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited by the specific embodiments disclosed below. It should be noted that, without conflict, the embodiments of this application and the features in each embodiment may be combined with each other.

[0036] An embodiment of this application discloses an oil circuit system of an engineering vehicle. Referring to Figure 1 、 Figure 2 and Figure 3 , an oil circuit system of an engineering vehicle includes a fuel heater 200, a fuel tank 300, and a controller.

[0037] The fuel tank 300 includes a tank body, in which a first chamber 310 and a second chamber 320 are defined. The first chamber 310 is communicated with a first oil outlet pipe 311 and a first oil return pipe 312, and the second chamber 320 is communicated with a second oil outlet pipe 321 and a second oil return pipe 322; the first oil outlet pipe 311 and the second oil outlet pipe 321 are communicated with an oil inlet pipeline 140 of the engine 100 through an oil inlet electromagnetic reversing valve 120, and the first oil return pipe 312 and the second oil return pipe 322 are communicated with an oil return pipeline 150 of the engine 100 through an oil return electromagnetic reversing valve. The first chamber 310 is used for storing high-grade fuel, and the second chamber 320 is used for storing low-grade fuel. A heating device 340 is arranged in the first chamber 310, and the heating device 340 is communicated with a cooling system of the engine 100. A first temperature detection device is arranged on the tank body, and the first temperature detection device is used for detecting the ambient temperature outside the fuel tank 300, and the first temperature detection device is electrically connected to the controller.

[0038] The fuel heater 200 is respectively communicated with the first chamber 310 and the second chamber 320 through an oil suction electromagnetic reversing valve 211, and the oil inlet electromagnetic reversing valve 120, the oil return electromagnetic reversing valve 130, and the oil suction electromagnetic reversing valve 211 are all electrically connected to the controller. A second temperature detection device 400 is arranged in the first chamber 310, and the second temperature detection device 400 is used for collecting the fuel temperature in the first chamber 310, and the second temperature detection device 400 is electrically connected to the controller. The water path of the cooling system of the engine 100 passes through the fuel heater 200, and a third temperature detection device for collecting the temperature of the engine 100 is arranged in the engine 100.

[0039] When the engineering vehicle starts, the first temperature detection device detects the ambient temperature outside the fuel tank 300. When the first temperature detection device detects that the external ambient temperature is lower than the wax crystallization temperature of the high-grade fuel, the first temperature detection device transmits a signal to the controller, and the controller transmits signals to the inlet electromagnetic directional valve 120 and the return oil electromagnetic directional valve 130, so that the second outlet pipe 321 is communicated with the fuel inlet pipeline 140 of the engine 100, and the second return pipe 322 is communicated with the fuel return pipeline 150 of the engine 100, so that the engine 100 uses the low-grade fuel for starting. After the engine 100 starts, the waste heat absorbed by the cooling system of the engine 100 is used to heat the high-grade fuel in the first chamber 310. When the second temperature detection device 400 detects that the fuel temperature in the first chamber 310 is higher than the wax crystallization temperature, the second temperature detection device 400 transmits a signal to the controller, so that the first outlet pipe 311 is communicated with the fuel inlet pipeline 140 of the engine 100, and the first return pipe 312 is communicated with the fuel return pipeline 150 of the engine 100, and the engine 100 works with the high-grade fuel, reducing the fuel usage cost; Before the engine 100 starts, when the third temperature detection sensor detects that the temperature of the engine 100 is lower than the temperature at which the engine 100 can be cold-started at low temperature, the third temperature detection sensor transmits a signal to the fuel heater 200, so that the fuel heater 200 sucks the low-grade fuel in the second chamber 320 for combustion, and uses the heat generated by the combustion to heat the cooling system of the engine 100, so that the engine 100 can meet the requirements of cold-starting at low temperature, and then supplies fuel to the engine 100 for starting, further reducing the possibility that the engine 100 of the engineering vehicle cannot start normally in a low-temperature environment; In addition, during the use of the engineering vehicle, in many cases, the heating of the in-vehicle air conditioner needs to be ensured when the engine 100 stops working. The fuel heater 200 is communicated with the first chamber 310 and the second chamber 320 of the box body through the oil suction electromagnetic directional valve 211 respectively. When the engine 100 is in a shutdown state, the fuel heater 200 uses the high-grade fuel in the first chamber 310 to heat the cooling system of the engine 100, so that the in-vehicle air conditioning system can supply heat normally, reducing energy consumption; When the temperature of the first chamber 310 is lower than the wax crystallization temperature, the fuel heater 200 uses the high-grade fuel in the second chamber 320 to supply heat to the in-vehicle air conditioner.

[0040] The heating device 340 includes a heat exchange tube assembly arranged in the first chamber 310. The heat exchange tube assembly is communicated with a liquid inlet pipe and a liquid outlet pipe. The liquid inlet pipe is communicated with the cooling system of the engine 100 through a first water pump 350, and the liquid outlet pipe is communicated with the cooling system of the engine 100.

[0041] The fuel heater 200 includes a combustion assembly 210 and a heat exchange assembly 220. The combustion assembly 210 is respectively communicated with the first chamber 310 and the second chamber 320 of the box body through an oil suction electromagnetic reversing valve 211. The heat exchange assembly 220 includes a plate heat exchange assembly 220 and a second water pump 230. The water inlet end of the plate heat exchange assembly 220 is communicated with the cooling system of the engine 100 through the second water pump 230. A heating device 340 is communicated with a six-way electromagnetic reversing valve 360. The liquid inlet pipe is communicated with the main outlet of the six-way electromagnetic reversing valve 360, and the liquid outlet pipe is communicated with the main return port of the six-way electromagnetic reversing valve 360. The first liquid inlet of the six-way electromagnetic reversing valve 360 is communicated with a first water pump 350. The first liquid outlet of the six-way electromagnetic reversing valve 360 is communicated with the cooling system of the engine 100. The water outlet end of the plate heat exchange assembly is respectively communicated with the cooling system of the engine 100 and the second liquid inlet of the six-way electromagnetic reversing valve 360. The second liquid outlet of the six-way electromagnetic reversing valve 360 is communicated with the water inlet end of the plate heat exchange assembly 220.

[0042] Before the engine 100 starts, when the third temperature detection sensor detects that the temperature of the engine 100 is lower than the temperature at which the engine 100 can start with cold at low temperature, the third temperature detection sensor transmits a signal to the fuel heater 200, causing the fuel heater 200 to suck the low-grade fuel in the second chamber 320 for combustion, and using the heat generated by the combustion to heat the cooling system of the engine 100, so that the engine 100 can meet the requirements for starting with cold at low temperature, and then supply fuel to the engine 100 to start, further reducing the possibility that the engine 100 of the engineering vehicle cannot start normally in a low-temperature environment.

[0043] Refer to Figure 2 、 Figure 3 and Figure 4 The water outlet end of the plate heat exchange assembly is communicated with the second liquid inlet of the six-way electromagnetic reversing valve 360 through a one-way valve.

[0044] The water outlet end of the plate heat exchange assembly is communicated with the second liquid inlet of the six-way electromagnetic reversing valve 360 through a one-way valve. When it is necessary to heat the cooling system of the engine 100 alone, this branch can be closed through the one-way valve to reduce heat waste.

[0045] In another preferred embodiment, the water outlet end of the plate heat exchange assembly is respectively communicated with the cooling system of the engine 100 and the second liquid inlet of the six-way electromagnetic reversing valve 360 through a three-way valve. The three-way valve can adjust the flow rate of the water outlet end of the plate heat exchange assembly flowing to the cooling system of the engine 100 and the second liquid inlet of the six-way electromagnetic reversing valve 360.

[0046] According to the heating requirements of the engine 100 and the fuel heating requirements, dynamically adjust the flow direction of the coolant heated by the fuel heater 200, and the emphasis on heating the engine 100 and heating the fuel can be adjusted.

[0047] Referring to Figure 3 , the volume of the first chamber 310 is at least three times the volume of the second chamber 320.

[0048] During the use of the engineering vehicle, low-grade fuel is only used during the low-temperature starting stage, and the consumption is much less than that of high-grade fuel. Setting the volume of the first chamber 310 to be larger than the volume of the second chamber 320, preferably the volume of the first chamber 310 is more than three times the volume of the second chamber 320, improves the rationality of the internal space distribution of the fuel tank 300.

[0049] Referring to Figure 3 and Figure 4 , the box body includes a vertical partition 370, and the first chamber 310 and the second chamber 320 are separated from each other by the vertical partition 370. At least one perforated partition 330 is arranged in the first chamber 310, and the perforated partition 330 is used to partition the space in the first chamber 310.

[0050] By arranging at least one perforated partition 330 in the first chamber 310, when the engineering vehicle is driving, starting, stopping and turning on a bumpy road, the fuel in the fuel tank 300 will shake, thereby generating fuel sloshing noise, and the vehicle driver can feel this noise. The perforated partition 330 is used to suppress the sloshing of the fuel.

[0051] Referring to Figure 3 , the perforated partition 330 is provided with at least three openings in the up and down direction, and the opening area of at least some of the openings located below is smaller than the opening area of the openings located above.

[0052] Referring to Figure 4 , the second temperature detection device 400 is located at a position in the first chamber 310 far from the heating device 340. By arranging the second temperature detection device 400 at a position in the first chamber 310 far from the heating device 340, the accuracy of the temperature detection of the high-grade fuel is improved.

[0053] In this application, the parts not described can be realized by adopting or referring to the existing technologies.

[0054] The above are all the preferred embodiments of this application, and the protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape and principle of this application should be covered within the protection scope of this application.

Claims

1. An oil system for an engineering vehicle, characterized in that: The invention comprises a fuel heater, a fuel tank and a controller, wherein the fuel tank comprises a box body, a first chamber and a second chamber are provided in the box body, the first chamber is connected with a first oil outlet pipe and a first oil return pipe, the second chamber is connected with a second oil outlet pipe and a second oil return pipe, the first oil outlet pipe and the second oil outlet pipe are connected with an oil inlet pipeline of the engine through an oil inlet electromagnetic reversing valve, the first oil return pipe and the second oil return pipe are connected with an oil return pipeline of the engine through an oil return electromagnetic reversing valve, the first chamber is used to store high-grade fuel, the second chamber is used to store low-grade fuel, a heating device is provided in the first chamber, the heating device is connected with a cooling system of the engine, and a first temperature detection device is provided on the box body. The first temperature detection device is used to detect the ambient temperature outside the fuel tank, the first temperature detection device is electrically connected to the controller, the fuel heater is communicated with the first chamber and the second chamber respectively through the oil suction electromagnetic reversing valve, the oil inlet electromagnetic reversing valve, the oil return electromagnetic reversing valve and the oil suction electromagnetic reversing valve are all electrically connected to the controller, a second temperature detection device is arranged in the first chamber, the second temperature detection device is used to collect the fuel temperature in the first chamber, the second temperature detection device is electrically connected to the controller, a water path of the cooling system of the engine passes through the fuel heater, and a third temperature detection device for collecting the engine temperature is arranged in the engine.

2. The oil circuit system of an engineering vehicle according to claim 1, characterized in that: The volume of the first chamber is at least 3 times the volume of the second chamber.

3. The oil circuit system of an engineering vehicle according to claim 1, characterized in that: The box body includes a vertical partition, and the first chamber and the second chamber are separated from each other by the vertical partition.

4. The oil circuit system of an engineering vehicle according to claim 1, characterized in that: The heating device includes a heat exchange tube assembly arranged in the first chamber, the heat exchange tube assembly is connected with a liquid inlet pipe and a liquid outlet pipe, the liquid inlet pipe is connected with the cooling system of the engine through a first water pump, and the liquid outlet pipe is connected with the cooling system of the engine.

5. The oil circuit system of an engineering vehicle according to claim 4, characterized in that: The fuel heater includes a combustion component and a heat exchange component. The combustion component is communicated with the first chamber and the second chamber of the box respectively through the oil suction electromagnetic reversing valve. The heat exchange component includes a plate heat exchange component and a second water pump. The water inlet end of the plate heat exchange component is communicated with the cooling system of the engine through the second water pump. The heating device is communicated with a six-way electromagnetic reversing valve. The liquid inlet pipe is communicated with the main outlet of the six-way electromagnetic reversing valve, and the liquid outlet pipe is communicated with the main return port of the six-way electromagnetic reversing valve. The first liquid inlet of the six-way electromagnetic reversing valve is communicated with the first water pump, and the first liquid outlet of the six-way electromagnetic reversing valve is communicated with the cooling system of the engine. The water outlet end of the plate heat exchange component is respectively communicated with the cooling system of the engine and the second liquid inlet of the six-way electromagnetic reversing valve, and the second liquid outlet of the six-way electromagnetic reversing valve is communicated with the water inlet end of the plate heat exchange component.

6. The oil circuit system of an engineering vehicle according to claim 5, characterized in that: The water outlet of the plate heat exchange assembly is communicated with the second liquid inlet of the six-way electromagnetic reversing valve through a one-way valve.

7. The oil circuit system of an engineering vehicle according to claim 5, characterized in that: The water outlet end of the plate heat exchange component is connected to the cooling system of the engine and the second liquid inlet of the six-way electromagnetic reversing valve respectively through a three-way valve, and the three-way valve can adjust the flow rate of the water outlet end of the plate heat exchange component to the cooling system of the engine and the second liquid inlet of the six-way electromagnetic reversing valve.

8. The oil circuit system of an engineering vehicle according to claim 1, characterized in that: At least one perforated partition is disposed in the first chamber, and the perforated partition is used to separate the space in the first chamber.

9. The oil circuit system of an engineering vehicle according to claim 8, characterized in that: The perforated partition plate is provided with at least three openings along the up-down direction, and at least part of the openings located at the bottom have an opening area smaller than the opening area of ​​the openings located at the top.

10. The oil circuit system of an engineering vehicle according to claim 1, characterized in that: The second temperature detection device is located in the first chamber at a position far away from the heating device.

Images