Double-fuel-tank device for loading machine and fuel supply and instrument panel control method

Abstract

The invention discloses a double-fuel-tank device for a loading machine and a fuel supply and instrument panel control method. The double-fuel-tank device comprises a main fuel tank, an auxiliary fuel tank, a first communicating pipeline and a second communicating pipeline. The main oil tank and the auxiliary oil tank are communicated through a first communicating pipeline and a second communicating pipeline, the first communicating pipeline is located on the upper middle portions of the two oil tanks, the second communicating pipeline is located on the lower portions of the two oil tanks, and an oil conveying filter and a fuel oil conveying pump are sequentially arranged on the second communicating pipeline in a spaced mode in the direction from the auxiliary oil tank to the main oil tank. The oil conveying filter and the fuel oil conveying pump are both electrically connected with a controller of the whole vehicle. The main oil tank and the auxiliary oil tank are arranged at the same time, so that the total amount of fuel oil is effectively increased, the cruising ability of the loader is remarkably enhanced, and the working efficiency of the loader is improved. And by arranging the first communicating pipeline, natural heat dissipation of the fuel oil is achieved. And by arranging the second communicating pipeline, the fuel oil in the auxiliary oil tank is supplemented to the main oil tank, the fuel oil is filtered, and the quality of the fuel oil is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of loader oil tanks, and in particular to a double fuel tank device for a loader and an oil supply and instrument panel control method. Background Art

[0002] Existing loaders generally have only one fuel tank, and the tank space is very limited. Generally, they need to be refueled after 12 hours of use, and their endurance is poor. In addition, loaders are off-road machines with low speeds, and they often need to be driven to a refueling point for refueling, which seriously affects the operation time. At present, the industry uses dual fuel tanks to solve the endurance problem of loaders, but the connecting pipes between the dual fuel tanks are mostly located at the bottom of the tanks, and there are many magazines deposited at the bottom of the tanks. Therefore, the connecting pipes are easily blocked by magazines.

[0003] In addition, the existing fuel tanks of loaders are mostly assembled separately on the rear frame, so the fuel tanks need to be manufactured separately first, and then assembled on the vehicle, which will affect the assembly efficiency. Furthermore, the fuel fluidity in a single fuel tank is poor. After a long period of work, the fuel temperature is high. The high temperature fuel will affect the engine during oil circulation and reduce the service life of the engine. In order to solve the problem of high oil temperature, the fuel oil is mostly cooled by adding fuel oil diffusers, but this method will increase the cost of the whole machine. Summary of the invention

[0004] In view of this, the present invention provides a dual fuel tank device for a loader, which can increase the cruising range of the entire vehicle and reduce the impact of impurities.

[0005] To achieve the above object, the present invention provides the following technical solutions: A dual fuel tank device for a loader comprises a main fuel tank, an auxiliary fuel tank, a first connecting pipeline and a second connecting pipeline.

[0006] Among them, the main fuel tank is located at the rear of the frame, and the auxiliary fuel tank is located at the side of the frame; the main fuel tank and the auxiliary fuel tank are connected through a first connecting pipe and a second connecting pipe, the first connecting pipe is located in the middle and upper part of the two fuel tanks, and the second connecting pipe is located at the lower part of the two fuel tanks. In the direction from the auxiliary fuel tank to the main fuel tank, the second connecting pipe is sequentially spaced and arranged with an oil filter and a fuel transfer pump, and the oil filter and the fuel transfer pump are both electrically connected to the controller of the whole vehicle; the main fuel tank is connected to the engine through an engine oil inlet pipe and an engine oil return pipe.

[0007] Preferably, the dual fuel tank device for a loader further comprises a main fuel tank liquid level sensor, the main fuel tank liquid level sensor is placed in the main fuel tank, and the main fuel tank liquid level sensor is electrically connected to the controller.

[0008] Preferably, the dual fuel tank device for a loader further comprises an auxiliary fuel tank liquid level sensor, the auxiliary fuel tank liquid level sensor is placed in the auxiliary mailbox, and the auxiliary fuel tank liquid level sensor is electrically connected to the controller.

[0009] Preferably, the main fuel tank and the auxiliary fuel tank are both integrated on the vehicle frame and are designed to be integral with the vehicle frame.

[0010] Preferably, a fuel filling pipe is provided on the main fuel tank.

[0011] The present invention also proposes a fuel supply control method for a dual fuel tank device for a loader, which is applied to the dual fuel tank device for a loader, comprising: a controller of the whole vehicle obtains the fuel level data in the main fuel tank, the fuel level data in the auxiliary fuel tank and the fuel passing resistance value data in the fuel filter through the main fuel tank level sensor, the auxiliary fuel tank level sensor and the fuel delivery filter, respectively, and the controller controls the fuel supply according to the following contents based on the above data: when the fuel level in the main fuel tank is lower than 15% of the total capacity of the main fuel tank, the fuel level in the auxiliary fuel tank is higher than 10% of the total capacity of the auxiliary fuel tank and the fuel level in the fuel delivery filter is When the fuel passage resistance value does not exceed the preset resistance value, the controller controls the fuel transfer pump to supply the fuel in the auxiliary fuel tank to the main fuel tank to replenish the fuel in the main fuel tank; when the fuel level in the main fuel tank is replenished to 15% or more of the total capacity of the main fuel tank, the controller controls the fuel transfer pump to stop running; when the fuel level in the auxiliary fuel tank is lower than 10% or less of the total capacity of the auxiliary fuel tank, the controller controls the fuel transfer pump to stop running; when the fuel passage resistance value in the oil filter exceeds the preset resistance value, the controller controls the fuel transfer pump to stop running, and synchronously controls the instrument panel of the whole vehicle to sound an alarm.

[0012] The present invention also proposes a dashboard fuel level display control method, which is applied to the above-mentioned dual fuel tank device for a loader, comprising: when the fuel level in the auxiliary tank is higher than 10% or more of the total capacity of the auxiliary tank and the fuel passage resistance value in the oil filter does not exceed the preset resistance value, the dashboard of the whole vehicle displays the sum of the total fuel levels of the main tank and the auxiliary tank; when the fuel level in the auxiliary tank is lower than 10% or less of the total capacity of the auxiliary tank, the dashboard of the whole vehicle only displays the fuel level of the main tank; when the fuel passage resistance value in the oil filter exceeds the preset resistance value, the dashboard of the whole vehicle only displays the fuel level of the main tank.

[0013] The beneficial effects of the present invention are as follows: compared with the prior art, the dual fuel tank device for a loader disclosed in the present application effectively increases the total amount of fuel by simultaneously setting a main fuel tank and an auxiliary fuel tank, significantly enhances the endurance of the loader, and improves the working efficiency of the loader. By setting a first connecting pipeline, when fuel is added or the engine returns oil, the fuel can flow naturally through the first connecting pipeline, so that the fuel can flow back and forth between the main fuel tank and the auxiliary fuel tank, which not only increases the flow space of the fuel, but also allows the high-temperature fuel returning into the fuel tank to fully exchange heat with the low-temperature fuel in the fuel tank, thereby achieving natural heat dissipation, which can reduce or eliminate fuel oil dispersion, thereby reducing the cost of the entire vehicle. By setting a second connecting pipeline, and setting a fuel transfer pump and a fuel filter on the second connecting pipeline, the fuel in the auxiliary fuel tank can be supplemented to the main fuel tank, and the supplemented fuel can be filtered by the fuel filter to ensure the quality of the fuel and avoid impurities blocking the pipeline.

[0014] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the fuel supply principle of the dual fuel tank device for a loader of the present invention; Figure 2 It is a schematic diagram of the layout of the dual fuel tank device for a loader of the present invention; Figure 3 It is a control logic diagram of the auxiliary oil tank supplying oil to the main oil tank of the present invention; Figure 4 It is a control logic diagram of the instrument panel liquid level display of the present invention.

[0016] Reference numerals: 1. Main fuel tank; 11. Fuel filling pipe; 2. Auxiliary fuel tank; 3. First connecting pipeline; 4. Second connecting pipeline; 5. Fuel filter; 6. Fuel transfer pump; 7. Engine; 8. Engine oil inlet pipe; 9. Engine oil return pipe; 10. Main fuel tank liquid level sensor; 20. Auxiliary fuel tank liquid level sensor. DETAILED DESCRIPTION

[0017] The invention discloses a double fuel tank device for a loader, which can increase the cruising range of the entire vehicle and reduce the influence of impurities.

[0018] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0019] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0020] Reference below Figures 1 to 4 A dual fuel tank device for a loader in an embodiment of the present invention is described.

[0021] The embodiment of the present application discloses a dual fuel tank device for a loader, comprising: a main fuel tank 1, an auxiliary fuel tank 2, a first connecting pipeline 3 and a second connecting pipeline 4.

[0022] Among them, the main fuel tank 1 is located at the rear of the frame, and the auxiliary fuel tank 2 is located at the side of the frame; the main fuel tank 1 and the auxiliary fuel tank 2 are connected through the first connecting pipe 3 and the second connecting pipe 4, the first connecting pipe 3 is located in the middle and upper part of the two fuel tanks, and the second connecting pipe 4 is located in the lower part of the two fuel tanks. In the direction from the auxiliary fuel tank 2 to the main fuel tank 1, the second connecting pipe 4 is sequentially spaced apart with an oil filter 5 and a fuel transfer pump 6, and the oil filter 5 and the fuel transfer pump 6 are both electrically connected to the controller of the whole vehicle; the main fuel tank 1 is connected to the engine 7 through the engine 7 oil inlet pipe and the engine 7 return pipe.

[0023] In this embodiment, the total amount of fuel is effectively increased by simultaneously providing the main fuel tank 1 and the auxiliary fuel tank 2, significantly enhancing the endurance of the loader and improving the working efficiency of the loader. By providing the first connecting pipe 3, when fuel is added or the engine 7 returns fuel, the fuel can flow naturally through the first connecting pipe 3, so that the fuel can flow back and forth between the main fuel tank 1 and the auxiliary fuel tank 2, which not only increases the flow space of the fuel, but also allows the high-temperature fuel returning into the fuel tank to fully exchange heat with the low-temperature fuel in the fuel tank, realizing natural heat dissipation, which can reduce or eliminate the dispersion of fuel, thereby reducing the cost of the whole vehicle.

[0024] Furthermore, by setting a second connecting pipeline 4, and setting a fuel transfer pump 6 and a fuel filter 5 on the second connecting pipeline 4, the fuel in the auxiliary fuel tank 2 can be replenished into the main fuel tank 1, and the replenished fuel is filtered by the fuel filter 5 to ensure the quality of the fuel and avoid impurities clogging the pipeline.

[0025] In some embodiments, the dual fuel tank device for a loader further includes a main tank level sensor 10 and an auxiliary tank level sensor 20. The main tank level sensor 10 is placed in the main tank 1, and the auxiliary tank level sensor 20 is placed in the auxiliary mailbox. Both the main tank level sensor 10 and the auxiliary tank level sensor 20 are electrically connected to the controller. The main tank level sensor 10 and the auxiliary tank level sensor 20 can respectively monitor and obtain the fuel level information in the main tank 1 and the auxiliary tank 2 in real time, and each transmits the information to the controller in real time, so that the controller can regulate the fuel transfer pump 6 according to the fuel level information.

[0026] In some embodiments, the main fuel tank 1 and the auxiliary fuel tank 2 are integrated on the vehicle frame and are integrally designed with the vehicle frame. Figure 2 As shown, the two fuel tanks are welded to the frame as a whole, the main fuel tank 1 is located at the rear of the frame, and the auxiliary fuel tank 2 is located at the side of the frame. The fuel tank and the frame as a whole can improve the shell strength and enhance stability. At the same time, there is no need to manufacture the fuel tank body separately and perform secondary assembly, which effectively saves space and improves the assembly efficiency of the whole vehicle.

[0027] In some embodiments, for example Figure 1 and Figure 2 As shown, a fuel filling pipe 11 is provided on the main fuel tank 1. Since the vehicle only transports fuel to the engine 7 through the main fuel tank 1, only the fuel filling pipe 11 is provided on the main fuel tank 1, which can save time for refueling and maintenance.

[0028] The present invention further provides a fuel supply control method for a dual fuel tank device for a loader, which is applied to the dual fuel tank device for a loader, and includes the following contents: The vehicle controller obtains the fuel level data in the main tank 1, the fuel level data in the auxiliary tank 2 and the fuel flow resistance value data in the fuel delivery filter 5 through the main tank level sensor 10, the auxiliary tank level sensor 20 and the fuel delivery filter 5, respectively. The controller controls the fuel supply according to the following contents based on the above data: When the fuel level in the main tank 1 is lower than 15% of the total capacity of the main tank 1, the fuel level in the auxiliary tank 2 is higher than 10% of the total capacity of the auxiliary tank 2, and the fuel passing resistance value in the fuel filter 5 does not exceed the preset resistance value, the controller controls the fuel transfer pump 6 to operate to supply the fuel in the auxiliary tank 2 to the main tank 1 to replenish the fuel in the main tank 1.

[0029] When the fuel liquid level in the main fuel tank 1 is replenished to 15% or more of the total capacity of the main fuel tank 1, the controller controls the fuel transfer pump 6 to stop running.

[0030] When the fuel level in the auxiliary fuel tank 2 is lower than 10% or less of the total capacity of the auxiliary fuel tank 2, the controller controls the fuel transfer pump 6 to stop running.

[0031] When the resistance value of the fuel in the fuel filter 5 exceeds the preset resistance value, the controller controls the fuel transfer pump 6 to stop running, and synchronously controls the instrument panel of the vehicle to sound an alarm.

[0032] The present invention also provides a fuel level display control method for an instrument panel, which is applied to the above-mentioned dual fuel tank device for a loader, and includes the following contents: When the fuel level in the auxiliary fuel tank 2 is higher than 10% or more of the total capacity of the auxiliary fuel tank 2 and the fuel passing resistance value in the fuel filter 5 does not exceed the preset resistance value, the instrument panel of the whole vehicle displays the sum of the total fuel levels of the main fuel tank 1 and the auxiliary fuel tank 2.

[0033] When the fuel level in the auxiliary fuel tank 2 is lower than 10% or less of the total capacity of the auxiliary fuel tank 2 , the instrument panel of the vehicle only displays the fuel level in the main fuel tank 1 .

[0034] When the fuel flow resistance value in the fuel delivery filter 5 exceeds the preset resistance value, the instrument panel of the vehicle only displays the fuel level in the main fuel tank 1 .

[0035] Other structures and operations of the dual fuel tank device for a loader, the fuel supply control method for the dual fuel tank device for a loader, and the instrument panel fuel level display control method according to the embodiments of the present invention are well known to ordinary technicians in the field and will not be described in detail here.

[0036] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0037] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A dual fuel tank device for a loader, characterized in that: include: A main oil tank, an auxiliary oil tank, a first connecting pipeline and a second connecting pipeline; The main fuel tank is located at the rear of the frame, and the auxiliary fuel tank is located at the side of the frame; The main fuel tank and the auxiliary fuel tank are connected through the first connecting pipeline and the second connecting pipeline, the first connecting pipeline is located in the middle and upper part of the two fuel tanks, the second connecting pipeline is located in the lower part of the two fuel tanks, and in the direction from the auxiliary fuel tank to the main fuel tank, the second connecting pipeline is sequentially spaced apart and provided with a fuel filter and a fuel transfer pump, and the fuel filter and the fuel transfer pump are both electrically connected to the controller of the whole vehicle; The main oil tank is connected to the engine through an engine oil inlet pipe and an engine oil return pipe.

2. The dual fuel tank device for a loader according to claim 1, characterized in that: It also includes a main oil tank liquid level sensor, which is placed in the main oil tank and is electrically connected to the controller.

3. The dual fuel tank device for a loader according to claim 1, characterized in that: It also includes an auxiliary oil tank liquid level sensor, which is placed in the auxiliary mailbox and is electrically connected to the controller.

4. The dual fuel tank device for a loader according to claim 1, characterized in that: The main oil tank and the auxiliary oil tank are both integrated on the vehicle frame and are designed as an integral whole with the vehicle frame.

5. The dual fuel tank device for a loader according to claim 1, characterized in that: The main fuel tank is provided with a fuel filling pipe.

6. A fuel supply control method for a dual fuel tank device for a loader, applied to the dual fuel tank device for a loader, characterized in that: include: The vehicle controller obtains the fuel level data in the main tank, the fuel level data in the auxiliary tank and the fuel resistance value data in the fuel filter through the main tank level sensor, the auxiliary tank level sensor and the fuel filter. The controller controls the fuel supply according to the following contents based on the above data: When the fuel level in the main tank is lower than 15% of the total capacity of the main tank, the fuel level in the auxiliary tank is higher than 10% of the total capacity of the auxiliary tank, and the fuel passing resistance value in the fuel filter does not exceed the preset resistance value, the controller controls the fuel transfer pump to operate to supply the fuel in the auxiliary tank to the main tank to replenish the fuel in the main tank; When the fuel level in the main tank is replenished to 15% or more of the total capacity of the main tank, the controller controls the fuel transfer pump to stop running; When the fuel level in the auxiliary tank is lower than 10% or less of the total capacity of the auxiliary tank, the controller controls the fuel transfer pump to stop running; When the fuel passing resistance value in the fuel filter exceeds the preset resistance value, the controller controls the fuel transfer pump to stop running and synchronously controls the instrument panel of the entire vehicle to sound an alarm.

7. A method for controlling the fuel level display on an instrument panel, applied to the dual fuel tank device for a loader according to any one of claims 1 to 5, characterized in that: include: When the fuel level in the auxiliary tank is higher than 10% or more of the total capacity of the auxiliary tank, and the fuel flow resistance value in the fuel filter does not exceed the preset resistance value, the vehicle's instrument panel displays the total sum of the fuel levels of the main tank and the auxiliary tank; When the fuel level in the auxiliary tank is less than 10% of the total capacity of the auxiliary tank, the vehicle's instrument panel will only display the fuel level in the main tank; When the fuel flow resistance value in the fuel filter exceeds the preset resistance value, the vehicle's instrument panel only displays the fuel level in the main fuel tank.

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