Tractor fuel oil switching device
By integrating heating device and solenoid valve switching in the tractor fuel switching device, the problem of starting diesel engine in low-temperature environments is solved, normal startup of diesel engines is achieved and fuel costs are saved.
Patent Information
- Application Number
- CN202422467661.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-12
- Publication Date
- 2025-08-15
- Estimated Expiration
- 2034-10-12
AI Technical Summary
In low temperature environments, diesel engines are prone to poor oil supply and difficult to start due to frozen oil. The prior art requires the use of lower-grade diesel to solve this problem, but the cost is higher.
A tractor fuel switching device is designed, including independent fuel tanks of high- and low-grade diesels. By integrating heating devices at the high-grade diesel suction pipes, the diesel temperature is ensured in the appropriate working range, and the fuel tank is switched through a fuel solenoid valve to save fuel use.
The normal start of the diesel engine in a low-temperature environment is achieved, reducing the cost of fuel use, especially in a low-temperature environment, the fuel tank can be switched without heating all diesel to the working temperature, further saving fuel.
Smart Images
Figure CN223227430U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tractors, in particular to a fuel switching device for tractors. Background Art
[0002] Tractors typically use diesel engines as their primary power source. In winter, especially in northern China, tractor users must consider the issue of "oil freezing." This occurs when diesel waxes and loses fluidity in low temperatures, resulting in poor fuel supply to the engine and, in turn, difficulty starting the engine. This necessitates the use of lower-grade diesel. Currently, diesel in China is classified by freezing point into the following grades: 10#, 5#, 0#, -10#, -20#, -30#, and -50#. For example, 0# diesel solidifies at 0°C, but crystallizes at around 5°C, making it suitable for use in temperatures above 5°C. Generally speaking, lower-grade diesel increases its low-temperature resistance, but its price also increases significantly with decreasing grades.
[0003] Therefore, it is necessary to provide a tractor fuel switching device to overcome the above-mentioned defects. Utility Model Content
[0004] The purpose of the utility model is to provide a fuel switching device for a tractor.
[0005] According to one aspect of the utility model, a tractor fuel switching device is provided, comprising: an engine; a first fuel tank, the first fuel tank being used to store a first fuel, and the first fuel tank being equipped with a first fuel suction pipe, a heating device being integrated at the fuel suction port of the first fuel suction pipe; a second fuel tank being used to store a second fuel, and the second fuel tank being equipped with a second fuel suction pipe, the grade of the first fuel being higher than the grade of the second fuel; a fuel switching valve, the fuel switching valve comprising a first fuel supply port connected to the first fuel suction pipe, a second fuel supply port connected to the second fuel suction line, and a first working fuel port connected to the engine fuel inlet, the fuel switching valve controlling the first fuel supply port or the second fuel supply port to remain in communication with the first working fuel port.
[0006] Preferably, the first oil suction pipe includes: a fixed flange, which is sealingly mounted on the first oil tank; a fuel pipeline, which is fixedly mounted on the fixed flange, extends from the inside of the first oil tank to the outside of the fixed flange, and is connected to the fuel switching valve through a pipeline; and a heating device, which includes a heating chamber formed outside the fuel pipeline.
[0007] Preferably, the first oil suction pipe further comprises: an elastic member having a conical spiral structure and being sleeved on the oil inlet end of the fuel pipeline.
[0008] Preferably, the heating device further comprises a first pipe and a second pipe which are arranged on the fixed flange and connected to the heating chambers respectively; the first pipe is connected to the hydraulic oil return line, and the second pipe is connected to the hydraulic oil radiator.
[0009] Preferably, the heating device further comprises a first pipe and a second pipe arranged on the fixed flange and connected to the heating chamber respectively; the first pipe is connected to the engine cooling water return line, and the second pipe is connected to the engine cooling water suction line.
[0010] Preferably, a heating solenoid valve is provided on the first pipeline to control the on-off of the first pipeline; and the heating solenoid valve is connected to a heating switch, and the heating switch is provided in the cab.
[0011] Preferably, the heating device further comprises an electric heater arranged in the heating cavity, the electric heater is connected to the power supply via a wiring harness; and a heating switch is provided between the electric heater and the power supply, the heating switch is provided in the cab.
[0012] Preferably, the fuel switching valve also includes: a first oil return port connected to the first fuel tank return port, a second oil return port connected to the second fuel tank return port, and a second working oil port connected to the engine return port; the fuel switching valve controls the first oil return port or the second oil return port to maintain communication with the second working oil port; and the fuel switching valve is controlled by a switching switch in the cab.
[0013] Preferably, the first fuel tank is further provided with a sensor capable of monitoring the temperature of the first fuel around the first fuel suction pipe.
[0014] Preferably, the capacity of the first oil tank is greater than the capacity of the second oil tank.
[0015] Compared with the prior art, the tractor fuel switching device provided by the utility model has the following beneficial effects:
[0016] The utility model designs the original single fuel tank structure of the tractor into a first fuel tank and a second fuel tank for respectively adding high-grade and low-grade diesel. The heating device heats the high-grade fuel tank of the main fuel tank to make the temperature of the high-grade diesel reach a suitable working range, and then switches between the second fuel tank and the first fuel tank through the fuel solenoid valve, thereby saving fuel usage costs.
[0017] Moreover, the utility model integrates a heating device into the oil suction port of the first oil suction pipe to heat the fuel near the first oil suction pipe, so that the temperature of the high-grade diesel passing through the first oil suction pipe is within a suitable working range. When the heating device meets the dynamic heat exchange requirements of the fuel, the second fuel tank and the first fuel tank can be switched, and there is no need to heat all the fuel in the first fuel tank to the corresponding working temperature, thereby further saving fuel usage costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:
[0019] Figure 1 It is a structural schematic diagram of the fuel switching device in the present utility model.
[0020] Figure 2 This is a schematic structural diagram of the first oil suction pipe in the present utility model.
[0021] Figure 3 This is a structural diagram of the fuel switching valve in the present utility model.
[0022] Figure 4 It is a structural diagram of the first embodiment or the second embodiment of the present utility model.
[0023] Figure 5 This is a schematic diagram of the principle of the first embodiment of the present utility model.
[0024] Figure 6 This is a schematic diagram of the principle of the second embodiment of the present utility model.
[0025] Figure 7 This is a schematic structural diagram of the third embodiment of the present invention.
[0026] Figure 8 This is a schematic diagram of the principle of the third embodiment of the present utility model.
[0027] Explanation of the accompanying symbols: 1. Engine; 2. First fuel tank; 21. First oil suction pipe; 22. Heating device; 211. Fixing flange; 212. Fuel pipeline; 213. Elastic member; 221. Heating chamber; 222. First pipeline; 224. Second pipeline; 225. Electric heater; 226. Wiring harness; 3. Second fuel tank; 31. Second oil suction pipe; 4. Fuel switching valve; 41. First fuel supply port; 42. Second fuel supply port; 43. First working oil port; 44. First oil return port; 45. Second oil return port; 46. Second working oil port; 5. Heating solenoid valve; 6. Heating switch; 7. Switching switch; 8. Power supply; A. Transmission box. DETAILED DESCRIPTION
[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0029] To simplify the drawings, only the parts relevant to the present invention are schematically shown in each figure. They do not represent the actual structure of the product. In addition, to simplify the drawings and facilitate understanding, in some figures, only one of the components with the same structure or function is schematically depicted or labeled. In this document, "one" not only means "only one" but also "more than one."
[0030] It should be further understood that the term "and / or" used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
[0031] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.
[0032] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.
[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without inventive work.
[0034] See also Figures 1 to 7This embodiment provides a fuel switching device for a tractor, comprising an engine 1, a first fuel tank 2, a second fuel tank 3, and a fuel switching valve 4. The first fuel tank 2 and the second fuel tank 3 are mounted on either side of a transmission case A. The first fuel tank 2 is used to store a first fuel, while the second fuel tank 3 is used to store a second fuel. The capacity of the first fuel tank 2 is greater than that of the second fuel tank 3, and the first fuel has a higher grade than the second fuel. The fuel switching valve 4 enables either the first fuel tank 2 or the second fuel tank 3 to be connected or disconnected from the engine 1.
[0035] The first fuel is low-grade diesel, typically -10#, -20#, -30#, and -50#, suitable for use in sub-zero environments. Correspondingly, the second fuel is high-grade diesel, such as 5# or 0#, suitable for use in temperatures above 5°C. It should be understood that the terms high-grade and low-grade diesel are relative to ambient temperature. In extremely cold weather, diesel that cannot be used at such ambient temperatures is high-grade diesel, while diesel that can be used at such temperatures is low-grade diesel.
[0036] See attached Figure 2 The first fuel tank 2 is equipped with a first fuel suction pipe 21, and the second fuel tank 3 is equipped with a second fuel suction pipe 31. Both the first and second fuel suction pipes 21 and 31 include a fixed flange 211, a fuel pipe 212, and an elastic member 213. The fixed flange 211 is sealedly mounted on the first fuel tank 2. The fuel pipe 212 is fixedly mounted on the fixed flange 211, extending from the interior of the first fuel tank 2 to the exterior of the fixed flange 211 to form an oil outlet. This oil outlet is connected to the fuel switching valve 4 via a pipe. The elastic member 213 is a spring with a conical helical structure. It is mounted on the oil inlet end of the fuel pipe 212 to protect the fuel pipe 212.
[0037] In addition, the first oil suction pipe 21 further includes a heating device 22 disposed at the fuel pipe 212. The heating device 22 includes a heating chamber 221 formed outside the fuel pipe 212. By integrating the heating device 22 with the fuel intake of the first oil suction pipe 21, the fuel near the first oil suction pipe 21 is heated. When the heating device 22 meets the dynamic heat exchange requirements of the fuel, it is not necessary to heat all the fuel in the first fuel tank 2 to the corresponding operating temperature, further saving fuel usage costs.
[0038] See attached Figure 3The fuel switching valve 4 includes a first fuel supply port 41 connected to the first fuel suction pipe 21, a second fuel supply port 42 connected to the second fuel suction pipe 31, a first working oil port 43 connected to the fuel inlet of the engine 1, a first oil return port 44 connected to the oil return port of the first fuel tank 2, a second oil return port 45 connected to the oil return port of the second fuel tank 3, and a second working oil port 46 connected to the oil return port of the engine 1.
[0039] The fuel switching valve 4 is preferably a solenoid-operated switching valve connected to a selector switch 7 located in the cab. The driver can control the fuel switching valve 4 from within the cab via the selector switch 7 to maintain communication between the first fuel supply port 41 or the second fuel supply port 42 and the first working oil port 43, and to maintain communication between the first oil return port 44 or the second oil return port 45 and the second working oil port 46, thereby connecting or disconnecting the first or second fuel tank 2 or 3 from the engine 1. Of course, those skilled in the art will appreciate that the fuel switching valve 4 may also be a manual switching valve or a reversing valve controlled by a joystick.
[0040] Furthermore, the heating device 22 has various implementations depending on the heating source. Figure 4 、 5 In the first embodiment, the heating device 22 further includes a first pipe 222 and a second pipe 224, mounted on the fixed flange 211 and connected to the respective heating chambers 221. The first pipe 222 is connected to the hydraulic oil return line, and the second pipe 224 is connected to the hydraulic oil radiator. A heating solenoid valve 5 is mounted on the first pipe 222 to control the on / off operation of the first pipe 222. In a preferred embodiment, the heating solenoid valve 5 is connected to a heating switch 6, which is located in the cab for easy user operation. In other words, the hydraulic oil heats the first fuel, reusing the tractor's waste heat.
[0041] See attached Figure 4 、 6 In the second embodiment, the heating device 22 further includes a first pipe 222 and a second pipe 224, each mounted on the fixed flange 211 and connected to the respective heating chambers 221. The first pipe 222 is connected to the engine 1's cooling water return line, while the second pipe 224 is connected to the engine 1's cooling water intake line. A heating solenoid valve 5 is mounted on the first pipe 222 to control the on / off operation of the first pipe 222. In a preferred embodiment, the heating solenoid valve 5 is connected to a heating switch 6, which is located in the cab for easy user operation. In other words, the first fuel is heated by the cooling water in the engine 1, thereby reusing the tractor's waste heat.
[0042] Based on the first and second embodiments, those skilled in the art can make reasonable expansions to the heating source, which includes but is not limited to hydraulic oil after the lifting hydraulic oil circuit works, high-temperature gas after the turbocharger, and high-temperature gas emitted from the exhaust.
[0043] During engineering use, it is only necessary to know the ambient temperature or the fuel temperature, that is, the flow control or temperature control of the heating source can be used to ensure that the heating source can heat the first fuel to a suitable working temperature within the period when the first fuel passes through the first oil suction pipe 21.
[0044] See attached Figure 7 、 8 In the third embodiment, the heating device 22 further includes an electric heater 225 disposed within the heating chamber 221. The electric heater 225 is connected to the power source 8 via a wiring harness 226. To ensure uniform heating of the heating device 22, a heat-conducting medium may be provided within the heating chamber. This provides protection for the electric heater and also enables uniform heating of the fuel pipeline 212. Furthermore, a heating switch 6 is provided between the electric heater 225 and the power source 8. The heating switch 6 is located within the cab for easy operation.
[0045] As a preferred embodiment, a sensor is also installed within the first fuel tank 2 to monitor the temperature of the first fuel surrounding the first fuel suction pipe 21. This sensor measures the initial fuel temperature and, during dynamic heating of the first fuel by the heat source, determines whether the first fuel temperature meets the required level. Those skilled in the art will appreciate that, in some applications, this sensor is redundant and not essential.
[0046] In order to facilitate understanding of the technical solution of this embodiment, its usage scenario is briefly described below: when used in summer (i.e., the ambient temperature is higher than 5°C), the first fuel tank 2 and the second fuel tank 3 are filled with 0# diesel at the same time to ensure the fuel tank capacity, and the oil is sucked back from the side of the first fuel tank 2.
[0047] During winter operation, the first fuel tank 2 is filled with 0# diesel and the second fuel tank 3 is filled with -35# diesel. During a cold start, the auxiliary fuel tank -35# diesel is used. Simultaneously, the instrument panel heating switch 6 is turned on, and the heating device 22 heats the 0# diesel in the first fuel tank 2 (at the first oil suction pipe 21). When the 0# diesel in the first fuel tank 2 reaches the desired temperature, the selector switch 7 is turned on, controlling the fuel switching valve 4 to switch the fuel supply from the first fuel tank 2 to the first fuel tank 2, and the fuel level sensor switches to the display simultaneously. After the tractor has been used for a certain period of time, the 0# diesel in the first fuel tank 2 has completed its circulation. At this point, the instrument panel heating switch 6 is turned off, stopping the heating of the 0# diesel in the first fuel tank 2. Furthermore, if the tractor is shut down or idle for more than half an hour, the instrument panel fuel tank selector switch 7 can be turned on in advance to switch the fuel supply from the second fuel tank 3 to the second fuel tank 3. This ensures that upon the next start, the -35# diesel in the engine 1 and the fuel lines are filled with the fuel from the second fuel tank 3, and the fuel level sensor switches to the display simultaneously.
[0048] It will be apparent to those skilled in the art that various modifications and variations can be made to the exemplary embodiments described above without departing from the spirit and scope of the present invention. Therefore, it is intended that the present invention cover modifications and variations of the present invention that fall within the scope of the appended claims and their equivalents.
Claims
1. A tractor fuel switching device, characterized in that: include: engine; a first fuel tank for storing a first fuel and equipped with a first fuel suction pipe, the first fuel suction pipe including a fuel pipeline, a heating device integrated at the fuel suction port of the first fuel suction pipe, and an elastic member mounted on the fuel inlet end of the fuel pipeline, the elastic member being a spring having a conical helical structure; the heating device including a heating chamber formed outside the fuel pipeline, the heating chamber containing a heating source, the heating source capable of heating the first fuel to a suitable operating temperature while the first fuel passes through the first fuel suction pipe; a second fuel tank, the second fuel tank being used to store a second fuel, and the second fuel tank being equipped with a second fuel suction pipe, wherein the grade of the first fuel is higher than the grade of the second fuel; A fuel switching valve, the fuel switching valve includes a first fuel supply port connected to the first fuel suction pipe, a second fuel supply port connected to the second fuel suction pipe, and a first working oil port connected to the engine oil inlet. The fuel switching valve controls the first fuel supply port or the second fuel supply port to remain connected to the first working oil port.
2. The tractor fuel switching device according to claim 1, characterized in that: The first oil suction pipe comprises: a fixed flange, the fixed flange being sealingly mounted on the first oil tank; A fuel pipeline is fixedly installed on the fixed flange, extends from the inside of the first fuel tank to the outside of the fixed flange, and is connected to the fuel switching valve through a pipeline.
3. The tractor fuel switching device according to claim 2, characterized in that: The heating device further includes a first pipe and a second pipe provided on the fixed flange and connected to the heating cavity respectively; The first pipeline is connected to the hydraulic oil return pipeline, and the second pipeline is connected to the hydraulic oil radiator.
4. The tractor fuel switching device according to claim 2, characterized in that: The heating device further comprises a first pipe and a second pipe provided on the fixing flange and connected to the heating chambers respectively; The first pipeline is connected to the engine cooling water oil return pipeline, and the second pipeline is connected to the engine cooling water water suction pipeline.
5. The tractor fuel switching device according to claim 3 or 4, characterized in that: The first pipeline is provided with a heating solenoid valve to control the on-off of the first pipeline; The heating solenoid valve is connected to a heating switch, and the heating switch is arranged in the cab.
6. The tractor fuel switching device according to claim 1, characterized in that: The heating device further comprises an electric heater disposed in the heating cavity, wherein the electric heater is connected to a power source via a wiring harness; A heating switch is provided between the electric heater and the power supply, and the heating switch is provided in the cab.
7. The tractor fuel switching device according to claim 1, characterized in that: The fuel switching valve further includes: a first oil return port connected to the first fuel tank oil return port, a second oil return port connected to the second fuel tank oil return port, and a second working oil port connected to the engine oil return port; the fuel switching valve controls the first oil return port or the second oil return port to maintain communication with the second working oil port; The fuel switching valve is controlled by a switching switch in the cab.
8. The tractor fuel switching device according to claim 1, characterized in that: The first fuel tank is further provided with a sensor capable of monitoring the temperature of the first fuel around the first fuel suction pipe.
9. The tractor fuel switching device according to claim 1, characterized in that: The capacity of the first fuel tank is greater than that of the second fuel tank.