A diesel automatic mixing system, method and driverless vehicle

Abstract

The present invention relates to a diesel automatic mixing system, method and driverless vehicle; the system includes: a first fuel tank, a second fuel tank, a main control device, a mixing control device and a mixed fuel tank; different grades of diesel are stored in the first fuel tank and the second fuel tank respectively; the main control device is used to obtain the engine coolant temperature and / or the planned next departure time and / or the planned next departure temperature, and calculate the target proportion of different grades of diesel based on the engine coolant temperature and / or the planned next departure time and / or the planned next departure temperature, and send the target proportion to the mixing control device; the mixing control device is used to adjust the output flow rates of the first fuel tank and the second fuel tank according to the target proportion; the mixed fuel tank is used to output the mixed diesel to the engine. Through this system, automatic mixing of diesel can be achieved, and at the same time, the fluidity of the fuel pipeline can be ensured before the next operation of the vehicle, and the cost after the vehicle runs can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of fuel engines for driverless vehicles, and particularly to a diesel automatic mixing system, method, and driverless vehicle. Background Art

[0002] Currently, mine-use driverless vehicles use diesel, and the types of diesel are No. 0 diesel and No. -35 diesel. The differences between No. -35 diesel and No. 0 diesel are as follows: the pour points are different, the applicable temperatures are different, and the low-temperature fluidities are different. The pour point of No. 0 diesel is 0°C, and the pour point of No. -35 diesel is -35°C. No. 0 diesel is applicable to areas where the lowest temperature with a 10% risk rate is above 4°C; No. -35 diesel is applicable to areas where the lowest temperature with a 10% risk rate is above -29°C. The low-temperature fluidity of No. -35 diesel is better than that of No. 0 diesel, and good low-temperature fluidity can ensure the normal filtration and transportation of diesel in the fuel supply system. Further, the price of No. -35 diesel is higher than that of No. 0 diesel.

[0003] Generally, mine-use driverless vehicles use No. 0 diesel, and in low-temperature situations, No. -35 diesel is used to ensure the fluidity in the vehicle's fuel pipeline in low-temperature situations.

[0004] The current common solutions are as follows: 1) After entering winter, maintenance personnel manually add No. -35 diesel according to the weather temperature, that is, only use No. -35 diesel; 2) After entering winter, maintenance personnel manually mix No. 0 diesel and No. -35 diesel based on experience according to the weather temperature to form a mixed oil.

[0005] The disadvantages of the current solutions are low manual efficiency, and the cost of No. -35 diesel is higher than that of No. 0 diesel. In the trend of intelligentization and unmanned operation, the current solutions have double disadvantages in terms of cost and efficiency.

[0006] In view of the above deficiencies, how to design a diesel automatic mixing system and method applicable to mine-use driverless vehicles to reduce labor and financial costs has become a technical problem that urgently needs to be solved currently. Summary of the Invention

[0007] The present invention discloses a diesel automatic mixing system, method, and driverless vehicle, aiming to solve the problem in the prior art that different grades of diesel need to be manually mixed according to different temperatures, resulting in reduced operation efficiency and high fuel consumption costs. The present invention adopts the following technical solutions:

[0008] In a first aspect, the present application provides a diesel automatic mixing system, which includes: a first fuel tank, a second fuel tank, a main control device, a mixing control device, and a mixed fuel tank;

[0009] Different grades of diesel are stored in the first fuel tank and the second fuel tank respectively;

[0010] The main control device is used to obtain the engine coolant temperature and / or the planned time for the next vehicle departure and / or the planned temperature for the next vehicle departure, and calculate the target proportion of different grades of diesel based on the engine coolant temperature and / or the planned time for the next vehicle departure and / or the planned temperature for the next vehicle departure, and send the target proportion to the mixing control device;

[0011] The mixing control device is used to adjust the output flow rates of the first fuel tank and / or the second fuel tank according to the target proportion;

[0012] The mixed fuel tank is used to output the mixed diesel to the engine.

[0013] In a second aspect, the present invention provides an autonomous vehicle including the diesel automatic mixing system as described above.

[0014] In a third aspect, the present invention provides a method for automatic mixing of diesel, including the following steps:

[0015] Confirm the engine coolant temperature;

[0016] Obtain the planned temperature for the next vehicle departure;

[0017] Calculate the target proportion of different grades of diesel based on the engine coolant temperature and the planned temperature for the next vehicle departure;

[0018] Change the output flow rates of different grades of diesel according to the target proportion to ensure the fluidity of the oil pipeline during the next vehicle departure.

[0019] As another preferred technical solution, the method for automatic mixing of diesel includes the following steps:

[0020] Collect the engine coolant temperature;

[0021] Calculate the target proportion of different grades of diesel based on the engine coolant temperature;

[0022] Change the output flow rates of different grades of diesel according to the target proportion.

[0023] As another preferred technical solution, the method for automatic mixing of diesel includes the following steps:

[0024] Confirm the engine coolant temperature after the vehicle is parked;

[0025] Obtain the planned temperature for the next vehicle departure;

[0026] Calculate the target proportion of different grades of diesel based on the engine coolant temperature and the planned temperature for the next vehicle departure;

[0027] Change the output flow of different grades of diesel according to the target ratio to ensure the fluidity of the oil pipeline when the vehicle goes out next time;

[0028] Confirm the engine coolant temperature before starting;

[0029] Calculate the target ratio of different grades of diesel based on the engine coolant temperature;

[0030] Change the output flow of different grades of diesel according to the target ratio.

[0031] The technical solution adopted by the present invention can achieve the following beneficial effects:

[0032] The present invention provides a diesel automatic mixing system applied to driverless vehicles. This system can automatically adjust the ratio of No. 0 diesel and -35 diesel according to the temperature and the operation requirements of autonomous vehicles to ensure the fluidity of the vehicle fuel pipeline. It can not only avoid manual operation of mixing fuel to improve operation efficiency, but also optimize the proportion of -35 diesel in the mixed oil according to the temperature to achieve the purpose of cost savings.

[0033] Furthermore, based on the above system, the present invention also provides a diesel automatic mixing method. When the engine needs to be shut down, according to the temperature at the next engine start, the fuel mixing is automatically started before the engine shuts down to optimize the proportion of -35 diesel in the mixed oil to ensure the fluidity of the vehicle fuel pipeline at the next start. Further, when the engine is running, as the temperature of the engine and the oil pipeline increases, according to the real-time temperature, the proportion of -35 fuel in the mixed diesel is reduced as soon as possible to achieve the purpose of cost savings. Through the above two methods, it can not only avoid manual operation to improve the degree of intelligence, but also reduce the consumption of -35 diesel fuel to reduce the operating cost of the vehicle.

[0034] On the other hand, the present invention also provides a driverless vehicle in which the above diesel automatic mixing system is applied or the above diesel automatic mixing method can be realized, solving the problems of low efficiency and high cost of manual mixing of different grades of diesel in driverless vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments, which form a part of the present invention. The schematic embodiments of the present invention and their explanations explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0036] Figure 1 It is a schematic structural diagram of a diesel automatic mixing system in a preferred embodiment disclosed in Embodiment 1 of the present invention;

[0037] Figure 2Flow chart of a preferred implementation of the diesel automatic mixing method disclosed in Embodiment 2 of the present invention;

[0038] Figure 3 Flow chart of a preferred implementation of the diesel automatic mixing method disclosed in Embodiment 3 of the present invention;

[0039] Figure 4 Flow chart of a preferred implementation of the diesel automatic mixing method disclosed in Embodiment 4 of the present invention.

[0040] Explanation of reference numerals:

[0041] Diesel automatic mixing system 10, first fuel tank 11, second fuel tank 12, main control device 13, mixing control device 14, mixed fuel tank 15, dispatching platform 16, temperature sensor 17. Detailed implementation manners

[0042] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and the corresponding drawings. In the description of the present invention, it should be noted that the term "or" is generally used in the sense of including "and / or", unless otherwise clearly specified in the content.

[0043] Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0044] Example 1

[0045] Currently, diesel in China is divided into 6 grades. Light diesel can be divided into 7 grades such as 10#, 5#, 0#, -10#, -20#, -35# and -50# according to the freezing point. According to the requirements of GB252 and GB19147 standards, the selection of diesel grades should be determined according to the ambient temperature during use.

[0046] Generally speaking, 5# diesel is suitable for use when the temperature is above 8 degrees Celsius; 0# diesel is applicable when the temperature is between 8 degrees Celsius and 4 degrees Celsius; -10# diesel is applicable when the temperature is between 4 degrees Celsius and -5 degrees Celsius; -20# diesel is applicable when the temperature is between -5 degrees Celsius and -14 degrees Celsius; -35# diesel is applicable when the temperature is between -14 degrees Celsius and -29 degrees Celsius; -50# diesel is applicable when the temperature is between -29 degrees Celsius and -44 degrees Celsius or lower than this temperature.

[0047] Since the temperature is low when the mine-use driverless vehicle goes out at present, a mixed oil of 0# diesel and -35# diesel is generally used. Specifically, the two need to be mixed in a certain proportion according to different temperatures to ensure the fluidity of the diesel in the pipeline. However, as the working time of the vehicle engine increases, the engine temperature gradually rises. At this time, if a large proportion of -35# diesel is still used, it will seriously affect the operation cost of the vehicle. But if the diesel proportion is adjusted manually, the operation efficiency will be reduced, so a perfect solution to this problem has not been found yet.

[0048] To solve the above problems, in this embodiment, a diesel automatic mixing system 10 is provided. Refer to Figure 1 , the system includes: a first fuel tank 11, a second fuel tank 12, a main control device 13, a mixing control device 14 and a mixed fuel tank 15; wherein, different grades of diesel are stored in the first fuel tank 11 and the second fuel tank 12 respectively; preferably, the main control device 13 is used to calculate the target proportion of different grades of diesel and send the target proportion to the mixing control device 14; preferably, the mixing control device 14 is used to adjust the output flow rates of the first fuel tank 11 and / or the second fuel tank 12 according to the target proportion; preferably, the mixed fuel tank 15 is used to output the mixed diesel to the engine.

[0049] In a preferred embodiment, 0# diesel and -35# diesel are stored in the first fuel tank 11 and the second fuel tank 12 respectively. Those skilled in the art should understand that defining the fuel tanks as "first" and "second" respectively is only used to distinguish that different diesel is contained in the two, and does not include a logical progressive relationship or a sequence relationship. Therefore, it can be expected that the first fuel tank 11 can store 0# diesel or -35# diesel, and the second fuel tank 12 can store -35# diesel or 0# diesel, as long as the types of diesel in the two fuel tanks are different.

[0050] In another preferred embodiment, the first fuel tank 11 and the second fuel tank 12 can also store other different grades of diesel respectively, such as 5# diesel and -50# diesel, 0# diesel and -50# diesel, etc., which will not be listed one by one here. However, it should be noted that the temperature difference range between the two grades of diesel is preferably large, so that the vehicle can select high-grade diesel at low temperature to ensure good low-temperature fluidity of the vehicle fuel pipeline, thereby further ensuring the normal filtration and transportation of light diesel in the fuel supply system; and at high temperature, low-grade diesel can be selected to reduce the operation cost.

[0051] Preferably, the diesel automatic mixing system 10 further includes a dispatching platform 16, which is used to send a vehicle return instruction and / or the planned time for the next departure and / or the planned temperature for the next departure to the main control device 13. When the vehicle operation task is approaching the end and before the vehicle returns to the parking area, the dispatching platform 16 sends a "vehicle return instruction" to the main control device 13 and at the same time sends the planned temperature for the next departure to the main control device 13. More preferably, the dispatching platform 16 also sends the planned time for the next departure at the same time when sending the planned temperature for the next departure.

[0052] Preferably, the dispatching platform 16 is an integrated information platform that integrates Internet of Things technology, data analysis technology, task order automatic pairing algorithm, Beidou navigation or Global Positioning System (GPS), etc., and can manage and control the operation or related behaviors of driverless vehicles in the mining area to improve the working efficiency of driverless vehicles.

[0053] In a preferred embodiment, the main control device 13 is an on-vehicle computing platform for a driverless vehicle, including a heterogeneous computing architecture to meet the requirements of many interfaces and computing power. Preferably, the heterogeneous computing architecture includes an AI unit, a computing unit, and a control unit.

[0054] Preferably, the AI unit includes a parallel computing architecture AI chip, and configures the AI chip and necessary processors using a multi-core CPU; in a preferred embodiment, the AI chip is used for efficient fusion and processing of multi-sensor data and outputs key information for execution by the execution layer. Preferably, the computing unit consists of multiple CPUs. Preferably, the control unit is mainly based on the traditional vehicle controller MCU and is connected to the domain controller and / or the electronic control unit of the execution layer through a communication interface to control each system of the driverless vehicle.

[0055] In another preferred embodiment, the main control device 13 can also be configured as a domain controller, such as a power domain controller. At this time, the functions of the power domain controller include but are not limited to engine management, transmission management, battery management, power distribution management, emission management, speed limit management, fuel and power saving management, etc.

[0056] In another preferred embodiment, the main control device 13 can also be configured as the electronic control unit ECU of the vehicle execution layer, and this control unit is only used for managing and controlling the engine.

[0057] Regardless of whether the main control device 13 is configured as an on-vehicle computing platform, a power domain controller, or the electronic control unit ECU of the execution layer, it can receive the vehicle return instruction, the planned time for the next departure, and the planned temperature for the next departure sent by the dispatching platform 16.

[0058] In a preferred embodiment, the diesel automatic mixing system 10 further includes a temperature sensor 17. The temperature sensor 17 is disposed in the engine and can collect the engine coolant temperature and send it to the main control device 13.

[0059] Preferably, the main control device 13 can obtain the engine coolant temperature, and / or the planned time for the next vehicle departure, and / or the planned temperature for the next vehicle departure, and calculate the target proportion of different grades of diesel based on the engine coolant temperature, and / or the planned time for the next vehicle departure, and / or the planned temperature for the next vehicle departure, and send the target proportion to the mixing control device 14.

[0060] In a preferred embodiment, the temperature sensor 17 collects the engine coolant temperature at the current moment and sends it to the main control device 13; the dispatching platform 16 sends the planned time for the next vehicle departure and the planned temperature for the next vehicle departure to the main control device 13. The main control device 13 determines the engine coolant temperature at the time of the next vehicle departure and calculates the proportions of -35# diesel and 0# diesel.

[0061] For example, when the dispatching platform 16 issues a vehicle return instruction, at this time the engine coolant temperature is 80 °C, the planned time for the next vehicle departure is 5 hours from the current time, and the planned temperature for the next vehicle departure is -10 °C. Based on the above information, it is estimated that when the next vehicle departs, the engine coolant temperature is below 0 °C. To increase the proportion of -35# diesel, the target proportion of -35# diesel is calculated to be 100%, and the target proportion of 0# diesel is 0%.

[0062] In another preferred embodiment, after the engine starts to work, only the temperature sensor 17 collects the engine coolant temperature at the current moment and sends it to the main control device 13 in real time. The main control device 13 calculates the proportions of -35# diesel and 0# diesel in real time based on the current engine coolant temperature.

[0063] For example, after the engine starts to work, as the engine coolant temperature gradually rises from below 0 °C to 80 °C, the target proportion of -35# diesel will gradually decrease from 100% to 0%, while the target proportion of 0# diesel gradually rises to the maximum value of 100%. This embodiment can quickly reduce the proportion of -35# diesel in the mixed diesel, achieving the purpose of reducing the cost.

[0064] In a preferred embodiment, the mixing control device 14 adjusts the output flow rates of the first fuel tank 11 and / or the second fuel tank 12 according to the target proportion sent by the main control device 13, and then the mixed fuel tank 15 outputs the mixed diesel to the engine for its use.

[0065] In a preferred embodiment, the hybrid control device 14 can achieve its functions by adding an electronic control unit ECU. Those skilled in the art should understand that the ECU is composed of structures such as an MCU, a memory, and a data interface. Its specific structure can select mature products in the prior art and can choose a suitable model according to actual needs, which is not limited herein.

[0066] Preferably, the first fuel tank 11 includes a first variable flow pump and a first flow sensor; preferably, the second fuel tank 12 includes a second variable flow pump and a second flow sensor; the first flow pump and / or the second flow pump can receive control instructions from the hybrid control device 14 and change their output flow rates.

[0067] As can be predicted by those skilled in the art, variable flow pumps can be provided only in a certain fuel tank, and different grades of diesel can also be mixed to achieve the purpose of the target ratio.

[0068] In this embodiment, by setting the above diesel automatic mixing system 10 in an unmanned vehicle (especially an unmanned vehicle used in a mining area), the vehicle can automatically adjust the ratio of 0# diesel and -35# diesel according to the temperature and the actual operation requirements of the mining area to ensure the fluidity of the fuel pipeline of the vehicle. It can not only avoid manual operation of mixing fuel to improve operation efficiency, but also optimize the proportion of -35# oil in the mixed oil according to the temperature to achieve the purpose of cost savings.

[0069] Example 2

[0070] Reference Figure 2 , the embodiment of the present invention provides a diesel automatic mixing method, aiming to enable an unmanned vehicle to automatically mix different grades of diesel after the vehicle is parked to ensure the fluidity of the diesel in the fuel pipeline during the next operation and avoid damaging the engine or affecting the normal start of the vehicle.

[0071] In a preferred embodiment, the method described in this embodiment is preferably applied to the diesel automatic mixing system 10 described in Embodiment 1 above, and the technical features already recorded in Embodiment 1 are naturally inherited in this embodiment.

[0072] Preferably, the above method includes the following steps:

[0073] S210. Confirm the engine coolant water temperature.

[0074] Preferably, a temperature sensor 17 is provided in the engine, which can collect the current engine coolant water temperature and send it to the main control device 13.

[0075] In a preferred embodiment, the master control device 13 is configured as an on-vehicle computing platform of an autonomous vehicle; in another preferred embodiment, the master control device 13 is configured as a domain controller, such as a power domain controller; in another preferred embodiment, the master control device 13 may also be an electronic control unit ECU of the vehicle execution layer.

[0076] S220. Obtain the temperature of the planned next vehicle departure.

[0077] Preferably, the master control device 13 is communicatively connected to the dispatching platform 16, and the dispatching platform 16 is configured to send a vehicle return instruction and / or the planned next vehicle departure time and / or the temperature of the planned next vehicle departure to the master control device 13. When the vehicle operation task is approaching completion and before the vehicle returns to the parking area, the dispatching platform 16 sends a "vehicle return instruction" to the master control device 13, and at the same time sends the temperature of the planned next vehicle departure to the master control device 13. More preferably, the dispatching platform 16 also sends the planned next vehicle departure time together when sending the temperature of the planned next vehicle departure.

[0078] More preferably, the master control device 13 simultaneously obtains the planned next vehicle departure time and the temperature of the planned next vehicle departure, calculates the time interval from engine shutdown to the next startup based on the planned next vehicle departure time, and calculates the engine coolant water temperature for the next vehicle departure according to the time interval and the temperature of the planned next vehicle departure.

[0079] S230. Calculate the target proportion of different grades of diesel based on the engine coolant water temperature and the temperature of the planned next vehicle departure.

[0080] In a preferred embodiment, the master control device 13 is capable of calculating the target proportion of different grades of diesel based on the current engine coolant water temperature, the time interval until the next vehicle departure, and the temperature at the planned next vehicle departure.

[0081] Preferably, the different grades of diesel include 0# diesel and -35# diesel.

[0082] For example, when the dispatching platform 16 issues a vehicle return instruction, the engine coolant water temperature is 80°C at this time, the planned next vehicle departure time is 5 hours from the current time, and the temperature of the planned next vehicle departure is -10°C. Based on the above information, it is estimated that the engine coolant water temperature will be below 0°C at the next vehicle departure. To increase the proportion of -35# diesel, the calculated target proportion of -35# diesel is 100%, and the target proportion of 0# diesel is 0%.

[0083] S240. Change the output flow rates of different grades of diesel according to the target proportion to ensure the fluidity of the oil pipeline at the next vehicle departure.

[0084] Preferably, the main control device 13 can send the calculated target ratios of different grades of diesel to the mixing control device 14. The mixing control device 14 is respectively connected to the first fuel tank 11 and the second fuel tank 12. Different grades of diesel are stored in the first fuel tank 11 and the second fuel tank 12 respectively, and the two fuel tanks are respectively connected to the mixed fuel tank 15. The mixing control device 14 adjusts the output flow rates of the first fuel tank 11 and / or the second fuel tank 12 according to the target ratios sent by the main control device 13, and then the mixed fuel tank 15 outputs the mixed diesel to the engine to ensure the fluidity of the oil pipeline when the vehicle goes out next time.

[0085] Preferably, the first fuel tank 11 includes a first variable flow pump and a first flow sensor; preferably, the second fuel tank 12 includes a second variable flow pump and a second flow sensor; the first flow pump and / or the second flow pump can receive control instructions from the mixing control device 14 and change their own output flow rates.

[0086] In this embodiment, the diesel automatic mixing method mainly focuses on the situation that after the driverless vehicle finishes driving and before starting next time, the main control device 13 and the mixing control device 14 in the vehicle can calculate the target ratios of different grades of diesel and perform automatic mixing, saving labor. At the same time, by increasing the proportion of -35# diesel after the vehicle finishes operating, the fluidity of the diesel in the fuel pipeline during the next operation is ensured, avoiding damage to the engine or affecting the normal start of the vehicle.

[0087] Example 3

[0088] Reference Figure 3 , the embodiment of the present invention provides a diesel automatic mixing method, aiming to enable the driverless vehicle to adjust the ratios of different grades of diesel in real time according to the engine coolant temperature after the engine starts running. As the temperature of the engine and the oil pipeline increases, the proportion of -35# diesel in the mixed diesel is reduced as soon as possible, achieving the purpose of reducing the operating cost.

[0089] In a preferred implementation manner, the method described in this embodiment is preferably applied to the diesel automatic mixing system 10 described in Embodiment 1 above, and the technical features recorded in Embodiment 1 above are naturally inherited in this embodiment.

[0090] Preferably, the above method includes the following steps:

[0091] S310. Collect the engine coolant temperature.

[0092] Preferably, a temperature sensor 17 is provided in the engine, which can collect the current engine coolant temperature and send it to the main control device 13.

[0093] In a preferred embodiment, the main control device 13 is configured as an in-vehicle computing platform of an autonomous vehicle; in another preferred embodiment, the main control device 13 is configured as a domain controller, such as a power domain controller; in another preferred embodiment, the main control device 13 may also be an electronic control unit ECU of the vehicle execution layer.

[0094] S320. Calculate the target proportion of different grades of diesel based on the engine coolant temperature.

[0095] In a preferred embodiment, the main control device 13 calculates the target proportion of different grades of diesel based on both the engine coolant temperature and the proportion of different grades of diesel at the previous moment.

[0096] Preferably, the proportion of different grades of diesel at the previous moment is provided to the main control device 13 by the mixing control device 14. The mixing control device 14 is connected to the main control device 13 on the one hand and to the first fuel tank 11 and the second fuel tank 12 on the other hand. Different grades of diesel are stored in the first fuel tank 11 and the second fuel tank 12 respectively, and the two fuel tanks are respectively connected to the mixed fuel tank 15.

[0097] Preferably, the different grades of diesel include 0# diesel and -35# diesel.

[0098] Preferably, the first fuel tank 11 includes a first variable flow pump and a first flow sensor; preferably, the second fuel tank 12 includes a second variable flow pump and a second flow sensor; the first flow pump and / or the second flow pump can receive control instructions from the mixing control device 14 and change their output flow rates.

[0099] Therefore, the mixing control device 14 determines the proportion of different grades of diesel at the previous moment by recording the data of the first flow sensor and the second flow sensor.

[0100] For example, before the engine starts working, the engine coolant temperature is 0°C and the actual proportion of -35# diesel is 100%; after the engine starts working, the engine coolant temperature gradually rises from below 0°C to 80°C. At this time, the main control device 13 calculates the target value of -35# diesel and the target value of 0# diesel in real time based on the engine coolant temperature, and calculates the difference between the target values of different grades of diesel and the actual values at the previous moment respectively. Based on the difference, the target proportion is calculated, and finally, different grades of diesel reach the best target proportion adapted to the temperature.

[0101] And calculates the difference between the target value and the actual value at the previous moment, calculates the target proportion based on the difference, and finally makes different grades of diesel reach the best target proportion adapted to the temperature.

[0102] S330. Change the output flow rates of different grades of diesel according to the target proportion.

[0103] In a preferred embodiment, the mixing control device 14 adjusts the output flow of the first fuel tank 11 and / or the second fuel tank 12 according to the target ratio sent from the main control device 13, and then the mixing fuel tank 15 outputs the mixed diesel to the engine for its use.

[0104] In this embodiment, the diesel automatic mixing method mainly focuses on the fact that after the engine of the unmanned vehicle is running, the main control device 13 and the mixing control device 14 in the vehicle can calculate the target proportion of different grades of diesel based on the real-time cooling water temperature of the engine, and automatically mix them to save labor. At the same time, by reducing the proportion of -35# diesel as soon as possible after the vehicle is started,

[0105] Reduce the use of -35# diesel, thereby reducing costs.

[0106] Example 4

[0107] 5References Figure 4 The embodiment of the present invention provides a diesel automatic mixing method, which is intended to enable an unmanned vehicle to

[0108] The vehicle can automatically mix different grades of diesel to ensure the fluidity of the diesel in the fuel pipeline during the next operation, avoiding damage to the engine or affecting the normal start-up of the vehicle; further, the unmanned vehicle can adjust the proportion of different grades of diesel in real time according to the engine cooling water temperature after the engine starts running. As the temperature of the engine and oil circuit increases, the proportion of -35# diesel in the mixed diesel can be reduced as soon as possible, thereby reducing operating costs.

[0109] In a preferred embodiment, the method described in this embodiment is preferably applied to the diesel automatic

[0110] The technical features of the dynamic hybrid system 10 that have been recorded in the above-mentioned embodiments 1-3 are naturally inherited in this embodiment.

[0111] Preferably, the above method comprises the following steps:

[0112] S410. After parking the vehicle, confirm the engine cooling water temperature.

[0113] Preferably, a temperature sensor 17 is provided in the engine, which can collect the current engine cooling water temperature and send it to the main control device 13 .

[0114] In a preferred embodiment, the main control device 13 is configured as an on-board computing platform of an unmanned vehicle; in another preferred embodiment, the main control device 13 is configured as a domain controller, such as a power domain controller; in another preferred embodiment, the main control device 13 can also be an electronic control unit ECU of the vehicle execution layer.

[0115] S420. Obtain the temperature of the planned next vehicle departure.

[0116] 0 Preferably, the main control device 13 is communicatively connected to the dispatching platform 16, and the dispatching platform 16 is configured to send

[0117] a vehicle return instruction and / or the planned time of the next vehicle departure and / or the temperature of the planned next vehicle departure to the main control device 13. When the vehicle operation task is approaching completion and before the vehicle returns to the parking area, the dispatching platform 16 sends a "vehicle return instruction" to the main control device 13, and at the same time sends the temperature of the planned next vehicle departure to the main control device 13. More preferably, the dispatching platform 16 also sends the planned time of the next vehicle departure together when sending the temperature of the planned next vehicle departure.

[0118] More preferably, the main control device 13 simultaneously obtains the planned time of the next vehicle departure and the temperature of the planned next vehicle departure, calculates the time interval from engine shutdown to the next startup based on the planned time of the next vehicle departure, and calculates the engine coolant temperature for the next vehicle departure according to the time interval and the temperature of the planned next vehicle departure.

[0119] S430. Calculate the target proportion of different grades of diesel based on the engine coolant temperature and the temperature of the planned next vehicle departure.

[0120] In a preferred embodiment, the main control device 13 can calculate the target proportion of different grades of diesel based on the current engine coolant temperature, the time interval until the next vehicle departure, and the temperature at the time of the planned next vehicle departure.

[0121] Preferably, the different grades of diesel include 0# diesel and -35# diesel.

[0122] For example, when the dispatching platform 16 issues a vehicle return instruction, at this time the engine coolant temperature is 80°C, the planned time of the next vehicle departure is 5 hours from the current time, and the temperature of the planned next vehicle departure is -10°C. Based on the above information, it is estimated that when the vehicle departs next time, the engine coolant temperature will be below 0°C. To increase the proportion of -35# diesel, the calculated target proportion of -35# diesel is 100%, and the target proportion of 0# diesel is 0%.

[0123] S440. Change the output flow rates of different grades of diesel according to the target proportion to ensure the fluidity of the oil pipeline during the next vehicle departure.

[0124] Preferably, the main control device 13 can send the calculated target proportions of different grades of diesel to the mixing control device 14. The mixing control device 14 is respectively connected to the first fuel tank 11 and the second fuel tank 12. Different grades of diesel are stored in the first fuel tank 11 and the second fuel tank 12 respectively, and both fuel tanks are respectively connected to the mixed fuel tank 15. The mixing control device 14 adjusts the output flow rates of the first fuel tank 11 and / or the second fuel tank 12 according to the target proportions sent by the main control device 13, and then the mixed fuel tank 15 outputs the mixed diesel to the engine to ensure the fluidity of the oil pipeline when the vehicle goes out next time.

[0125] Preferably, the first fuel tank 11 includes a first variable flow pump and a first flow sensor; preferably, the second fuel tank 12 includes a second variable flow pump and a second flow sensor; the first flow pump and / or the second flow pump can receive control instructions from the mixing control device 14 and change their own output flow rates.

[0126] S450. Confirm the engine coolant temperature before starting.

[0127] Preferably, before the vehicle runs, confirm the engine coolant temperature again.

[0128] S460. Calculate the target proportions of different grades of diesel based on the engine coolant temperature.

[0129] In a preferred embodiment, the main control device 13 calculates the target proportions of different grades of diesel based on both the engine coolant temperature and the proportions of different grades of diesel at the previous moment.

[0130] Preferably, the mixing control device 14 determines the proportions of different grades of diesel at the previous moment by recording the data of the first flow sensor and the second flow sensor.

[0131] For example, before the engine works, the engine coolant temperature is 0°C, and the actual proportion of -35# diesel is 100%; after the engine starts to work, the engine coolant temperature gradually rises from below 0°C to 80°C. At this time, the main control device 13 calculates the target values of -35# diesel and 0# diesel in real time through the engine coolant temperature, and calculates the differences between the target values of different grades of diesel and the actual values at the previous moment respectively, and calculates the target proportions based on the differences, and finally makes different grades of diesel reach the best target proportions adapted to the temperature.

[0132] S470. Change the output flow rates of different grades of diesel according to the target proportions.

[0133] In a preferred embodiment, the mixing control device 14 adjusts the output flow rates of the first fuel tank 11 and / or the second fuel tank 12 according to the target ratio sent by the main control device 13. Then, the mixed fuel tank 15 outputs the mixed diesel to the engine for its use.

[0134] In this embodiment, by means of the above diesel automatic mixing method, when the driverless vehicle is parked and before the next start-up, the main control device 13 and the mixing control device 14 in the vehicle can calculate the target ratios of different grades of diesel and perform automatic mixing, saving labor. At the same time, by increasing the proportion of -35# diesel after the vehicle ends its operation, the fluidity of the diesel in the fuel pipeline is ensured during the next operation, avoiding damage to the engine or affecting the normal start-up of the vehicle. Further, after the engine of the driverless vehicle runs, the main control device 13 and the mixing control device 14 in the vehicle can calculate the target ratios of different grades of diesel based on the real-time cooling water temperature of the engine and perform automatic mixing, saving labor. At the same time, by reducing the proportion of -35# diesel as soon as possible after the vehicle starts, the consumption of -35# diesel is reduced, thereby reducing costs.

[0135] Example 5

[0136] Corresponding to the diesel automatic mixing system and method provided in the above embodiment, this embodiment provides a driverless vehicle, the structure of which mainly includes a vehicle body and the diesel automatic mixing system 10 described in Embodiment 1. Through this diesel automatic mixing system 10, at least the diesel automatic mixing method described in any one of Embodiments 2-4 above can be realized.

[0137] The embodiments of the present invention have been described above in conjunction with the accompanying drawings. However, the present invention is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present invention, those of ordinary skill in the art can also make many forms without departing from the purpose of the present invention and the scope protected by the claims, and all of them fall within the protection scope of the present invention.

Claims

1. An automatic diesel mixing system, characterized in that, Comprising: A first fuel tank, a second fuel tank, a main control device, a mixing control device and a mixed fuel tank; The first fuel tank and the second fuel tank respectively store diesel of different grades; The main control device is used to obtain the engine coolant water temperature, the planned time for the next vehicle departure and the planned temperature for the next vehicle departure, and calculate the target proportion of different grades of diesel based on the engine coolant water temperature, the planned time for the next vehicle departure and the planned temperature for the next vehicle departure, and send the target proportion to the mixing control device; The mixing control device is used to adjust the output flow rates of the first fuel tank and the second fuel tank according to the target proportion; The mixed fuel tank is used to output the mixed diesel to the engine.

2. The automatic diesel mixing system according to claim 1, characterized in that, It further includes a dispatching platform, and the dispatching platform is used to send a vehicle return instruction, the planned time for the next vehicle departure and the planned temperature for the next vehicle departure to the main control device.

3. The automatic diesel mixing system according to claim 1, characterized in that, It further includes a temperature sensor, and the temperature sensor is used to collect the engine coolant water temperature and send it to the main control device.

4. The automatic diesel mixing system according to claim 1, characterized in that, The first fuel tank includes a first variable flow pump and a first flow sensor, and the second fuel tank includes a second variable flow pump and a second flow sensor; The first variable flow pump and the second variable flow pump can receive control instructions from the mixing control device and change their own output flow rates.

5. An autonomous vehicle, characterized in that, Comprising the diesel automatic mixing system according to any one of claims 1-4.

6. A method for realizing automatic diesel mixing based on the system according to any one of claims 1-4, characterized in that, The method includes the following steps: Confirm the engine coolant water temperature; Obtain the planned temperature for the next vehicle departure; Calculate the target proportion of different grades of diesel based on the engine coolant water temperature and the planned temperature for the next vehicle departure; Change the output flow rates of different grades of diesel according to the target proportion to ensure the fluidity of the oil pipeline during the next vehicle departure.

7. The method according to claim 6, characterized in that, It further includes the steps of: Simultaneously obtain the planned time for the next vehicle departure and the planned temperature for the next vehicle departure; Confirm the engine coolant water temperature for the next vehicle departure based on the planned time for the next vehicle departure and the planned temperature for the next vehicle departure.

8. A method for realizing automatic diesel mixing based on the system according to any one of claims 1-4, characterized in that, The method includes the following steps: Collect the engine coolant water temperature; Calculate the target proportion of different grades of diesel based on the engine coolant water temperature; Change the output flow rates of different grades of diesel according to the target proportion.

9. The method according to claim 8, characterized in that, It further includes the steps of: Simultaneously calculate the target proportion of different grades of diesel based on the engine coolant water temperature and the proportion of different grades of diesel at the previous moment.

10. A method for realizing automatic diesel mixing based on the system according to any one of claims 1-4, characterized in that, The method includes the following steps: Confirm the engine coolant water temperature after vehicle return; Obtain the planned temperature for the next vehicle departure; Calculate the target proportion of different grades of diesel based on the engine coolant water temperature and the planned temperature for the next vehicle departure; Change the output flow rates of different grades of diesel according to the target proportion to ensure the fluidity of the oil pipeline during the next vehicle departure; Confirm the engine coolant water temperature before starting; Calculate the target proportion of different grades of diesel based on the engine coolant water temperature; Change the output flow rates of different grades of diesel according to the target proportion.

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