Vehicle dryer regeneration control system and regeneration control method thereof

Abstract

The application provides a vehicle dryer regeneration control system and a regeneration control method thereof, and the vehicle dryer regeneration control system comprises an engine, a chassis control device, an air compressor, a dryer, a gas storage container and a brake mechanism which are sequentially communicated through a gas supply pipeline, the air compressor and the dryer are further communicated through a feedback pipeline, the gas storage container and the dryer are communicated through a back blowing pipeline, and the chassis control device is configured to determine a first pumping amount of the air compressor in a current pumping cycle; when the first pumping amount is greater than or equal to a first preset pumping amount, the gas storage container is controlled to back blow gas to the dryer; a residual pumping amount of the gas storage container after back blowing regeneration in the current pumping cycle is determined, and the residual pumping amount is added to the first pumping amount in a next pumping cycle. According to the vehicle dryer regeneration control system, the effect of saving fuel and reducing consumption of the vehicle can be achieved.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and in particular to a regeneration control system and regeneration control method for an automotive dryer. Background Technology

[0002] Currently, commercial vehicles mainly use pneumatic braking systems. The air compressor, an accessory to the commercial vehicle's engine assembly, provides a continuous supply of compressed air for the entire vehicle's pneumatic braking system. The compressed air discharged from the air compressor is first connected to an air dryer via air hoses. The dryer dries the high-humidity compressed air through adsorption before it flows into the air reservoir and braking mechanism.

[0003] Traditional dryers automatically initiate the regeneration process each time the cut-off pressure (unloading pressure) is reached, consuming the vehicle's total air pressure. This requires the air compressor to operate continuously, resulting in power consumption and hindering fuel economy. Therefore, a dryer regeneration method that is beneficial for vehicle fuel efficiency is needed. Summary of the Invention

[0004] In view of the above problems, the present invention provides a regeneration control system and a regeneration control method for an automotive dryer. By constructing the regeneration control logic of the dryer as follows: when the total amount of gas dried by the dryer in the current pumping cycle reaches a set value, it is determined that the regeneration conditions are met, and then the regeneration process is started, which can overcome the above technical problems.

[0005] This invention provides a vehicle dryer regeneration control system, comprising: an engine, a chassis control device, an air compressor, a dryer, an air storage container, and a braking mechanism. The air compressor, the dryer, the air storage container, and the braking mechanism are sequentially connected via an air supply pipeline. The air compressor and the dryer are also connected via a feedback pipeline, and the air storage container and the dryer are connected via a backflush pipeline. The gas flow direction in the feedback pipeline and the backflush pipeline is opposite to the gas flow direction in the air supply pipeline. The chassis control device is configured to determine the first pumping volume of the air compressor in the current pumping cycle; determine whether the first pumping volume is greater than or equal to a first preset pumping volume value, and when the first pumping volume is greater than or equal to the first preset pumping volume value, control the air storage container to backflush gas to the dryer for regeneration; determine the remaining pumping volume of the air storage container after backflush regeneration in the current pumping cycle, and include the remaining pumping volume in the first pumping volume of the next pumping cycle.

[0006] The vehicle dryer regeneration control system according to the application configures the control logic of the chassis control device as follows: when the total amount of gas dried by the dryer in the current pumping cycle reaches a set value, it is determined that the regeneration condition is met, and then the regeneration process is started. Compared with the conventional dryer, the regeneration process is automatically started every time the cut-off pressure is reached, the vehicle air pressure is consumed, and the air compressor needs to work for a long time. The regeneration control method of the embodiment can achieve the effect of saving fuel and reducing consumption. In addition, the remaining pumping amount of the gas storage container in the current pumping cycle is counted into the next pumping cycle, which can prevent the vehicle from being damaged due to the failure to control the air compressor to stop pumping in time when the unloading air pressure is reached but the first preset pumping amount is not reached in the next pumping cycle. In this way, the dryer regeneration process can be intelligentized and automated, the compressed air without oil and water can be provided for the brake mechanism, and the reliability is higher.

[0007] In some embodiments, the gas supply pipeline comprises: a first gas supply section, one end of the first gas supply section being in communication with the air compressor, and the other end extending rearward from the air compressor; a second gas supply section, one end of the second gas supply section being in communication with the dryer, and the other end extending rearward from the dryer; and a transition connecting pipe, two ends of the transition connecting pipe being connected to the first gas supply section and the second gas supply section respectively, the transition connecting pipe comprising an inner hose and a braided layer arranged outside the inner hose.

[0008] In some embodiments, the dryer comprises an unloading valve for unloading and a regeneration valve for regeneration of the dryer, and the chassis control device is connected to the unloading valve and the regeneration valve respectively.

[0009] The second aspect of the application provides a regeneration control method of a vehicle dryer regeneration control system, which is applied to the vehicle dryer regeneration control system according to the first aspect of the application. The regeneration control method comprises the following steps: determining a first pumping amount of the air compressor in a current pumping cycle; determining whether the first pumping amount is greater than or equal to a first preset pumping amount value, and controlling the gas storage container to blow gas back to the dryer for regeneration when the first pumping amount is greater than or equal to the first preset pumping amount value; determining a remaining pumping amount of the gas storage container after back-blowing regeneration in the current pumping cycle, and counting the remaining pumping amount into the first pumping amount of the next pumping cycle.

[0010] In some embodiments, the first pumping amount of the air compressor in the current pumping cycle is obtained, specifically by the following formula: determining the first pumping amount, wherein T is the first pumping amount, Q is the displacement of the air compressor, n is the speed ratio of the engine, is the speed ratio of the engine, and p is the volumetric efficiency of the engine, and t is the pumping time.

[0011] In some embodiments, the value range of the first preset pump air volume is 110-150L.

[0012] In some embodiments, controlling the gas storage container to backflush gas to the dryer specifically includes the following steps: obtaining a first gas pressure value in the gas storage container; determining the relationship between the first gas pressure value and the unloading gas pressure value; if the first gas pressure value is greater than or equal to the unloading gas pressure value, then controlling the gas storage container to start backflushing gas operation.

[0013] In some embodiments, before determining the relationship between the first air pressure value and the unloading air pressure value, the method further includes the following steps: obtaining the vehicle's operating condition, which includes one of normal operating condition, towing operating condition, and loaded operating condition; and determining the unloading air pressure value based on the vehicle's operating condition.

[0014] In some embodiments, after obtaining the first air pressure value, the method further includes the following step: when it is determined that the first air pressure value is less than or equal to the vehicle cut-in pressure, the vehicle dryer regeneration control system is controlled to stop backflushing regeneration.

[0015] In some embodiments, before determining that the first air pressure value is less than or equal to the vehicle cut-in pressure, the method further includes the following steps: obtaining the vehicle's operating condition, which includes one of normal operating condition, towing operating condition, and loaded operating condition; and determining the vehicle cut-in pressure based on the vehicle's operating condition.

[0016] According to the regeneration control method of the vehicle dryer regeneration control system of the present invention, the control logic is constructed as follows: when the total amount of gas dried by the dryer in the current pumping cycle reaches a set value, it is determined that the regeneration conditions are met, and then the regeneration process begins. Compared with the traditional dryer, which automatically starts the regeneration process every time it reaches the cut-off pressure, consuming the vehicle's air pressure and requiring the air compressor to work continuously, the regeneration control method of this embodiment can achieve fuel saving and consumption reduction in vehicles. In addition, by carrying the remaining pumping volume of the air storage container in the current pumping cycle into the next pumping cycle, it can prevent the air compressor from failing to stop pumping in time when the unloading pressure has been reached in the next pumping cycle but the first preset pumping volume has not been reached, thus preventing damage to the vehicle. In this way, the intelligent and automated regeneration process of the dryer is ensured, which also helps to extend its service life. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A structure schematic diagram of the vehicle dryer regeneration control system of the embodiment of the present application;

[0019] Figure 2 A structure schematic diagram of the vehicle dryer of the embodiment of the present application;

[0020] Figure 3 A logic schematic diagram of the vehicle dryer regeneration control system of the embodiment of the present application;

[0021] Figure 4 A flow schematic diagram of one implementation of the regeneration control method of the vehicle dryer regeneration control system of the embodiment of the present application;

[0022] Figure 5 A flow schematic diagram of the regeneration control method of the vehicle dryer regeneration control system of the embodiment of the present application, which controls the gas feedback of the gas storage container to the dryer.

[0023] Explanation of reference signs:

[0024] 100-vehicle dryer regeneration control system;

[0025] 1-engine;

[0026] 2-air compressor;

[0027] 3-dryer; 31-dry tank body; 32-unloading valve; 33-regeneration valve;

[0028] 4-gas storage container;

[0029] 5-chassis control device;

[0030] 6-wire harness;

[0031] 7-gas supply pipeline; 71-first gas supply section; 72-second gas supply section; 73-transition connecting pipe;

[0032] 8-feedback pipeline;

[0033] 9-back flushing pipeline. DETAILED DESCRIPTION

[0034] In order to make the above objectives, features and advantages of the embodiments of the present application more apparent, clear and easy to understand, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0035] At present, commercial vehicles mainly adopt air brake systems, wherein, the air compressor is an accessory of the engine assembly of the commercial vehicle, and provides the air brake system of the whole vehicle with continuous compressed air. The compressed air discharged by the air compressor is firstly connected to the air dryer through the air steel pipe, and then the high-humidity compressed air is dried by the adsorption of the dryer, and then flows into the component air tank and the brake mechanism.

[0036] In the traditional dryer, the regeneration process is automatically started every time the cut-off pressure (i.e. unloading pressure) is reached, which consumes the air pressure of the whole vehicle, and the air compressor needs to work for a long time, which has certain power consumption and is not conducive to oil saving and consumption reduction. Therefore, it is necessary to provide a dryer regeneration measure which is conducive to oil saving and consumption reduction of the vehicle.

[0037] Therefore, the present application provides a dryer regeneration control system for vehicles and a regeneration control method thereof, wherein the regeneration control logic of the dryer is configured as follows: when the total amount of air dried by the dryer in the current pumping cycle reaches a set value, it is determined that the regeneration condition is met, and then the regeneration process is started. Compared with the scheme in the related art in which the dryer automatically starts the regeneration process every time the cut-off pressure is reached, which consumes the air pressure of the whole vehicle and requires the air compressor to work for a long time, the regeneration control method of the present embodiment can achieve the effect of oil saving and consumption reduction. In addition, the remaining pumping amount of the air tank in the current pumping cycle is counted into the next pumping cycle, which can prevent the air compressor from stopping pumping in time when the unloading air pressure is reached but the first preset pumping amount is not reached in the next pumping cycle, thereby causing damage to the vehicle. In this way, the dryer regeneration process can be intelligentized and automated, the compressed air without oil and water can be provided for the brake mechanism, and the reliability is higher.

[0038] Reference will be made to the following Figures 1-5 The dryer regeneration control system 100 according to the first aspect of the present application is described.

[0039] The dryer regeneration control system 100 for vehicles according to the present embodiment can be used on medium or heavy vehicles. Specifically, referring to Figure 1 , the dryer regeneration control system 100 for vehicles can include an engine 1, a chassis control device 5, an air compressor 2, a dryer 3, an air tank 4 and a brake mechanism, wherein the air compressor 2, the dryer 3, the air tank 4 and the brake mechanism are sequentially communicated through a gas supply pipeline 7. The air compressor 2 is arranged on the engine 1, the engine 1 drives the air compressor 2 to operate through a transmission shaft, the air compressor 2 compresses air, the compressed air enters the air tank 4 after being dehumidified and deoiled by the drying valve, and the air tank 4 is inflated for use when the vehicle brakes.

[0040] The dryer 3 is also communicated with the engine 1 through a feedback pipeline 8, and the gas storage container 4 is communicated with the dryer 3 through a back blowing pipeline 9. The gas flows in the feedback pipeline 8 and the back blowing pipeline 9 are the same, and are opposite to the gas flow in the gas supply pipeline 7. The dryer 3 can feedback the whole vehicle gas pressure to the engine 1 through the feedback pipeline 8, so as to control the operation of the air compressor 2 through the engine 1, and then realize the pumping or stopping of the air compressor 2.

[0041] The dryer 3 can include an unloading valve 32 and a regeneration valve 33, both of which are solenoid valves and are arranged inside a drying tank body 31 of the dryer 3. The unloading valve 32 is used for unloading, and when the unloading valve 32 is opened, the air compressor 2 stops pumping. The regeneration valve 33 is used for regeneration of the dryer 3. When the regeneration valve 33 is opened, the gas in the gas storage container 4 is blown to the dryer 3 through the feedback pipeline 8, so as to take away the moisture in the dryer and discharge it to the outside. The dryer 3 and the gas storage container 4 are arranged on the chassis, and are fixedly connected to the chassis through a support and a fastener.

[0042] The chassis control device 5 is an independent controller independent of the vehicle controller or the vehicle CAN network. The chassis control device 5 can be fixedly arranged in the cab. The chassis control device 5 is connected with the unloading valve 32 and the regeneration valve 33, for example, through a wire harness 6 to realize signal transmission. The wire harness 6 can be fixed by a support and a cable tie.

[0043] In this way, the chassis control device 5 can control the opening or closing of the unloading valve 32 and the regeneration valve 33, so as to control the drying and regeneration of the dryer 3 and the normal braking of the vehicle.

[0044] The chassis control device 5 is configured to determine a first pumping amount of the air compressor 2 in a current pumping cycle; determine whether the first pumping amount is greater than or equal to a first preset pumping amount value, and control the gas storage container 4 to back blow gas to the dryer 3 for regeneration when the first pumping amount is greater than or equal to the first preset pumping amount value. The chassis control device 5 can also determine a remaining pumping amount of the gas storage container 4 after back blowing regeneration in the current pumping cycle, and add the remaining pumping amount to the first pumping amount in the next pumping cycle.

[0045] Specifically, the first pumping amount of the air compressor 2 in the current pumping cycle is obtained by the chassis control device 5, where the first pumping amount refers to the cumulative pumping amount of the air compressor 2 in the current pumping cycle, and is also the total amount of gas dried by the dryer 3 in the current pumping cycle. The pumping cycle refers to the time interval between adjacent two regeneration processes of the dryer 3, and the chassis control device 5 can calculate the first pumping amount in real time. By obtaining the first pumping amount, the cumulative drying amount of the dryer 3 in the current pumping cycle can be known, so as to judge the moisture and oil content of the drying agent in the dryer 3, and further provide an operation basis for whether to start the regeneration.

[0046] When the first pumping amount does not reach the first preset pumping amount value, it indicates that the dryer 3 does not need to perform drying regeneration operation, and the air compressor 2 can continue to pump gas. When the first pumping amount reaches the first preset pumping amount value, it indicates that the drying agent in the dryer 3 contains a certain amount of moisture, and the regeneration operation can be started. It should be noted that when the first pumping amount reaches the first preset pumping amount value, it only indicates that the dryer 3 meets the regeneration condition, but the specific time to start the regeneration program can be that the first pumping amount is equal to the first preset pumping amount value, or the first pumping amount is greater than the first preset pumping amount value, or whether to immediately start the regeneration program can be judged according to other operating conditions of the vehicle.

[0047] When the regeneration program is started, the chassis control device 5 can control the unloading valve 32 and the regeneration valve 33 of the dryer 3 to be opened. At this time, the engine 1 stops driving the air compressor 2 to operate, the air compressor 2 stops pumping gas, and the gas in the gas storage container 4 can be blown back into the gas storage container 4 through the back blowing pipeline 9 and the regeneration valve 33. The moisture and oil in the drying agent in the dryer 3 are carried away by the back blowing gas and discharged to the outside, until the drying agent completely removes the contained moisture and oil. After the regeneration program in the current pumping cycle is completed, the air compressor 2, the dryer 3 and the like enter the running process of the next pumping cycle.

[0048] During the regeneration process, the chassis control device 5 can calculate the remaining pumping amount of the gas storage container 4 after the back blowing regeneration in the current pumping cycle, and take the remaining pumping amount as part of the first pumping amount in the next pumping cycle. The remaining pumping amount can be the first pumping amount minus the amount of gas consumed in the back blowing regeneration process. For example, taking the first preset pumping amount value of 120L as an example, the regeneration process in the current pumping cycle consumes 80L of gas, and the remaining pumping amount of the gas storage container 4 is 40L. At this time, 40L is taken as the starting calculation value of the first pumping amount in the next pumping cycle, and the first pumping amount in the next pumping cycle is accumulated from 40L, until the first pumping amount in the next pumping cycle reaches 120L, which indicates that the dryer 3 has met the regeneration condition of the next pumping cycle. In this way, it can be prevented that the air compressor 2 is not controlled to stop pumping gas in time when the unloading gas pressure is reached but the first preset pumping amount is not reached in the next pumping cycle, causing damage to the vehicle.

[0049] In this way, the dryer 3 can realize intelligentization and automation of the regeneration process, and the service life of the dryer 3 is prolonged. In addition, compared with the traditional dryer 3, the regeneration control method of the vehicle dryer regeneration control system 100 can achieve the effect of saving fuel and reducing consumption.

[0050] According to the vehicle dryer regeneration control system 100, the control logic of the chassis control device 5 is configured to: when the total amount of gas dried by the dryer 3 in the current pumping cycle reaches the set value, it is judged that the regeneration condition is met, and then the regeneration process is started. Compared with the traditional dryer 3, the regeneration control method of the vehicle dryer regeneration control system 100 can achieve the effect of saving fuel and reducing consumption. In addition, the remaining pumping amount of the gas storage container 4 in the current pumping cycle is counted into the next pumping cycle, which can prevent the vehicle from being damaged due to the failure to control the air compressor 2 to stop pumping in time when the unloading pressure is reached but the first preset pumping amount is not reached in the next pumping cycle. In this way, the dryer 3 can realize intelligentization and automation of the regeneration process, and the service life of the dryer 3 is prolonged. In addition, the dryer 3 can provide oil-free and water-free compressed air for the brake mechanism, and the reliability is higher.

[0051] In some embodiments, the gas supply pipeline 7 can include a first gas supply section 71, a second gas supply section 72, and a transition connecting pipe 73. The first gas supply section 71 and the second gas supply section 72 are both steel pipes, and the first gas supply section 71 and the second gas supply section 72 extend substantially in the front-rear direction. One end (for example, the front end) of the first gas supply section 71 is in communication with the air compressor 2, and the other end extends rearward from the air compressor 2. One end (for example, the front end) of the second gas supply section 72 is in communication with the dryer 3, and the other end extends rearward from the dryer 3.

[0052] The transition connecting pipe 73 has two ends connected to the first gas supply section 71 and the second gas supply section 72, respectively. The transition connecting pipe 73 includes an inner hose and a braided layer arranged outside the inner hose. The inner hose can be a rubber hose, and the braided layer can be a metal braided layer. In this way, the inner hose makes the transition connecting pipe 73 have a certain softness, so as to facilitate the bending of the transition connecting pipe 73 to connect the rear ends of the first gas supply section 71 and the second gas supply section 72. The braided layer has a certain structural strength, which can better protect the inner hose, so that the transition connecting pipe 73 can withstand high-pressure and high-temperature gas, prevent gas leakage at the transition connecting pipe 73, and improve the reliability of the gas supply pipeline 7.

[0053] Understandably, when the air compressor 2 pumps air into the air storage container 4, the airflow will first flow from front to back along the extension direction of the first air supply section 71, change the flow direction when passing through the transition connecting pipe 73, and then flow from back to front along the extension direction of the second air supply section 72. After being dried by the dryer 3, it enters the air storage container 4.

[0054] In some embodiments, the feedback line 8 is a high-temperature resistant hose. Thus, the feedback line 8 has a certain degree of flexibility, which can better connect the dryer 3 and the engine 1. Furthermore, its high-temperature resistance allows it to better transmit high-temperature and high-pressure gases, extending its service life and increasing its reliability.

[0055] In some embodiments, the backflush line 9 is a flexible hose, which facilitates the connection between the gas storage container 4 and the dryer 3.

[0056] In some embodiments, the dryer 3 may further include a drying tank 31, which contains a desiccant. The unloading valve 32 and the regeneration valve 33 are both disposed on the drying tank 31. Thus, the dryer 3 has a high degree of integration, which helps to reduce the space occupied by the system.

[0057] The following is for reference. Figures 3-5 The regeneration control method of a vehicle dryer regeneration control system 100 according to a second aspect embodiment of the present invention is described.

[0058] The regeneration control method of the vehicle dryer regeneration control system 100 in this embodiment can be applied to the vehicle dryer regeneration control system 100 in the above embodiment. Figure 4 This is a flowchart illustrating the regeneration control method of the vehicle dryer regeneration control system according to an embodiment of the present invention. Figure 4 As shown, the regeneration control method may include the following steps:

[0059] S101. Determine the first pumping volume of the air compressor in the current pumping cycle;

[0060] S102. Determine whether the first pump air volume is greater than or equal to the first preset pump air volume value, and when the first pump air volume is greater than or equal to the first preset pump air volume value, control the gas storage container to backflush gas to the dryer for regeneration.

[0061] S103. Determine the remaining pumping volume of the gas storage container after backflushing and regeneration in the current pumping cycle, and include the remaining pumping volume in the first pumping volume of the next pumping cycle.

[0062] Specifically, the first pumping amount of the air compressor 2 in the current pumping cycle is obtained by the chassis control device 5, where the first pumping amount refers to the cumulative pumping amount of the air compressor 2 in the current pumping cycle, and is also the total amount of gas dried by the dryer 3 in the current pumping cycle. The pumping cycle refers to the time interval between adjacent two regeneration processes of the dryer 3, and the chassis control device 5 can calculate the first pumping amount in real time. By obtaining the first pumping amount, the cumulative drying amount of the dryer 3 in the current pumping cycle can be known, so as to judge the moisture and oil content of the drying agent in the dryer 3, and then provide an operation basis for whether to start the regeneration.

[0063] When the first pumping amount does not reach the first preset pumping amount value, it means that the dryer 3 does not need to perform drying regeneration operation, and the air compressor 2 can continue to pump gas. When the first pumping amount reaches the first preset pumping amount value, i.e., the first pumping amount is greater than or equal to the first preset pumping amount value, it means that the drying agent in the dryer 3 contains a certain amount of moisture, and the regeneration operation can be started. It should be noted that when the first pumping amount reaches the first preset pumping amount value, it only means that the dryer 3 meets the regeneration condition, but the specific time to start the regeneration program can be that the first pumping amount is equal to the first preset pumping amount value, or the first pumping amount is greater than the first preset pumping amount value, or whether to immediately start the regeneration program can be judged according to other operating conditions of the vehicle.

[0064] When the regeneration program is started, the unloading valve 32 and the regeneration valve 33 of the dryer 3 are controlled to be opened. At this time, the engine 1 stops driving the air compressor 2 to operate, and the air compressor 2 stops pumping gas, while the gas in the gas storage container 4 can be blown back to the gas storage container 4 through the blowback pipeline 9 and the regeneration valve 33. The moisture and oil in the drying agent in the dryer 3 are carried away by the blowback gas and discharged to the outside until the drying agent completely removes the contained moisture. After the regeneration program in the current pumping cycle is completed, the air compressor 2, the dryer 3, etc. enter the running process of the next pumping cycle.

[0065] During the regeneration process, the chassis control device 5 can calculate the remaining pumping amount of the gas storage container 4 after the backflush regeneration in the current pumping cycle, and take the remaining pumping amount as part of the first pumping amount in the next pumping cycle. The remaining pumping amount can be the first pumping amount minus the amount of gas consumed in the backflush regeneration process. For example, taking the first preset pumping amount value of 120L as an example, the regeneration process in the current pumping cycle consumes 80L of gas, and the remaining pumping amount in the gas storage container 4 is 40L. At this time, 40L is taken as the starting calculation value of the first pumping amount in the next pumping cycle, and the first pumping amount in the next pumping cycle is accumulated from 40L. When the first pumping amount in the next pumping cycle reaches 120L, it means that the dryer 3 has met the regeneration condition of the next pumping cycle. In this way, it can prevent the vehicle from being damaged due to the failure to control the air compressor 2 to stop pumping when the unloading pressure is reached but the first preset pumping amount is not reached in the next pumping cycle.

[0066] The cycle is repeated in this way, thereby ensuring that the dryer 3 can realize intelligentization and automation of the regeneration process, and being conducive to prolonging the service life of the dryer 3. In addition, compared with the scheme in the prior art that the dryer automatically starts the regeneration process every time the cut-off pressure is reached, consumes the air pressure of the whole vehicle, and requires the air compressor to work for a long time, the regeneration control method of the vehicle dryer regeneration control system 100 can achieve the effect of saving fuel and reducing consumption.

[0067] According to the regeneration control method of the vehicle dryer regeneration control system 100, the regeneration control logic of the dryer 3 is constructed as follows: when the total amount of gas dried by the dryer 3 in the current pumping cycle reaches a set value, it is judged that the regeneration condition is met, and then the regeneration process is started. Compared with the scheme in the related art that the dryer 3 automatically starts the regeneration process every time the cut-off pressure is reached, consumes the air pressure of the whole vehicle, and requires the air compressor 2 to work for a long time, the regeneration control method of the embodiment can achieve the effect of saving fuel and reducing consumption. In addition, the remaining pumping amount of the gas storage container 4 in the current pumping cycle is taken into account in the next pumping cycle, which can prevent the vehicle from being damaged due to the failure to control the air compressor 2 to stop pumping when the unloading pressure is reached but the first preset pumping amount is not reached in the next pumping cycle. In this way, the regeneration process of the dryer 3 can be intelligentized and automated, and the air compressor 2 can provide oil-free and water-free compressed air, thereby being more reliable.

[0068] In some embodiments, the first pumping amount of the air compressor 2 in the current pumping cycle is obtained, specifically including: calculating the first pumping amount by the formula: wherein T is the first pumping amount, Q is the displacement of the air compressor 2, and n is the speed of the engine 1, is the speed ratio of the engine 1, p is the volumetric efficiency of the engine 1, and t is the pumping time. For example, the chassis control device 5 can communicate with the whole vehicle to collect relevant parameters and calculate the first pumping amount in real time according to the above formula, so as to accurately calculate the cumulative dry gas amount of the dryer 3 in the current pumping period, thereby providing a basis for whether to start the regeneration program.

[0069] In some embodiments, the first preset pumping amount value T is in the range of 110-150L, for example, the first preset pumping amount value T can be 110L, 120L, 130L, 140L or 150L, of course, the present application is not limited thereto, the first preset pumping amount value T can be reasonably selected within the above range by referring to factors including vehicle type, dryer model, etc., in this way, on the one hand, it can avoid that the first preset pumping amount value T is too small, for example, less than 110L, which increases the regeneration frequency of the dryer 3, which is not conducive to the purpose of oil saving and consumption reduction; on the other hand, it can avoid that the first preset pumping amount value T is too large, for example, greater than 150L, which cannot regenerate the drying agent in the dryer 3 in time, resulting in poor drying function of the dryer 3, so that oil and water enter the brake mechanism, causing poor brake effect and even vehicle damage.

[0070] Figure 5 The figure is a flow diagram of the regeneration control method of the vehicle dryer regeneration control system of the embodiment of the present application. According to some embodiments of the present application, as shown in Figure 5 The regeneration control method of the present application, the step of controlling the gas blowing back of the gas storage container 4 to the dryer 3, i.e. step S102, specifically includes the following steps:

[0071] S201, obtaining a first gas pressure value in the gas storage container;

[0072] S202, determining the size relationship between the first gas pressure value and the unloading gas pressure value;

[0073] S203, if the first gas pressure value in the gas storage container is greater than or equal to the unloading gas pressure value, controlling the gas storage container to start the gas blowing back operation.

[0074] Specifically, the first air pressure value is the actual air pressure value in the air storage tank 4, which is also the whole vehicle air pressure value. When the first pump air volume reaches the first preset pump air volume value, it is needed to determine whether the first air pressure value in the air storage tank 4 reaches the unloading air pressure value. If the first air pressure value does not reach the unloading air pressure value, the air compressor 2 continues to pump air. If the first air pressure value reaches the unloading air pressure value, i.e., the first air pressure value is greater than or equal to the unloading air pressure value, the unloading valve 32 of the dryer 3 is opened by the chassis control device 5, and the air pressure in the air storage tank 4 is fed back to the engine 1 through the dryer 3 and the feedback hose. The engine 1 stops driving the air compressor 2 to operate according to the feedback air pressure, and the air compressor 2 stops pumping air. At this time, the air storage tank 4 is in a full pressure state. The chassis control device 5 controls the regenerative valve 33 to open, and the air in the air storage tank 4 can be blown into the dryer 3 through the blowback pipeline 9 to blow and regenerate the desiccant in the dryer 3.

[0075] In this way, by setting the control logic to regenerate when the air pressure in the air storage tank 4 reaches the unloading air pressure value, the phenomenon of the whole vehicle air pressure being too low during regeneration can be avoided, and the regeneration process will not affect the emergency braking of the vehicle, thereby improving the safety.

[0076] According to some embodiments of the present application, before determining the size relationship between the first air pressure value and the unloading air pressure value, the following steps are further included: obtaining a working condition of the vehicle, the working condition of the vehicle including one of a normal working condition, a reverse drag working condition and a load working condition; determining the unloading air pressure value according to the working condition of the vehicle

[0077] Here, the normal working condition can be a working condition of the vehicle on a flat road without loading heavy objects; the reverse drag working condition can be a working condition of the vehicle on a downhill, sliding and the like, in which the engine 1 does not spray oil due to no power demand of the vehicle driver, and the output torque of the engine 1 is a negative torque for overcoming the friction of the engine 1; and the load working condition can be a working condition of the vehicle on an uphill, loading goods and the like, which requires the engine 1 to provide a large power. It can be understood that in different working conditions, the air pressure required by the braking mechanism of the vehicle for braking is different, i.e., the load that the air compressor 2 can bear is different.

[0078] For example, if the vehicle is in the normal working condition, it is determined that the first air pressure value is not less than the first unloading air pressure value; if the vehicle is in the reverse drag working condition, it is determined that the first air pressure value is not less than the second unloading air pressure value; and if the vehicle is in the load working condition, it is determined that the first air pressure value is not less than the third unloading air pressure value.

[0079] In the normal working condition, when the gas pressure in the gas storage container 4 rises to the first unloading pressure value, the unloading valve 32 is opened, the air compressor 2 stops pumping, the regeneration valve 33 is opened, and the back flushing regeneration is started. In the motoring working condition, when the gas pressure in the gas storage container 4 rises to the second unloading pressure value, the unloading valve 32 is opened, the air compressor 2 stops pumping, the regeneration valve 33 is opened, and the back flushing regeneration is started. In the loaded working condition, when the gas pressure in the gas storage container 4 rises to the third unloading pressure value, the unloading valve 32 is opened, the air compressor 2 stops pumping, the regeneration valve 33 is opened, and the back flushing regeneration is started. The specific values of the first unloading pressure value, the second unloading pressure value and the third unloading pressure value can be determined by statistical analysis of the pressure values in the gas storage container 4 when the vehicle is actually unloaded in different working conditions.

[0080] In this embodiment, the control logic is set to select the opening time of unloading and regeneration according to the working condition of the vehicle, so that the process of unloading and regeneration is more intelligent, which helps to promote the effect of oil saving and consumption reduction.

[0081] Optionally, the first unloading pressure value is 12.2-12.8 bar, for example, the first unloading pressure value can be 12.2 bar, 12.4 bar, 12.5 bar, 12.6 bar or 12.8 bar, the first unloading pressure value can be reasonably valued within the above range, and preferably the first unloading pressure value is 12.5 bar.

[0082] The second unloading pressure value is 12.2-12.8 bar, for example, the second unloading pressure value can be 12.2 bar, 12.4 bar, 12.5 bar, 12.6 bar or 12.8 bar, the second unloading pressure value can be reasonably valued within the above range, and preferably the second unloading pressure value is 12.5 bar.

[0083] The third unloading pressure value is 11.2-11.6 bar, for example, the third unloading pressure value can be 11.2 bar, 11.3 bar, 11.4 bar, 11.5 bar or 11.6 bar, the third unloading pressure value can be reasonably valued within the above range, and preferably the third unloading pressure value is 11.4 bar.

[0084] In some embodiments, after obtaining the first gas pressure value, the method further comprises the following steps: when it is determined that the first gas pressure value is less than or equal to the whole vehicle cut-in pressure, the vehicle dryer regeneration control system 100 stops the back flushing regeneration.

[0085] Specifically, the vehicle cut-in pressure here refers to the minimum pressure value maintained in the air tank 4 to enable the vehicle braking mechanism to effectively brake. As the reverse blowing regeneration of the dryer 3 proceeds, the air pressure in the air tank 4 gradually decreases, and the air flow also gradually decreases. When the chassis control device 5 determines that the actual air pressure value in the air tank 4 decreases to the vehicle cut-in pressure, the unloading valve 32 and the regeneration valve 33 are controlled to be closed, and the reverse blowing regeneration program is stopped. In this way, the gas pressure in the air tank 4 can be ensured to be sufficient to achieve reliable braking of the vehicle, thereby improving the driving safety of the vehicle.

[0086] In some embodiments, before determining that the first air pressure value is less than or equal to the vehicle cut-in pressure, the method further comprises the following steps: obtaining a working condition of the vehicle, the working condition of the vehicle including one of a normal working condition, a reverse drag working condition, and a load carrying working condition; and determining the vehicle cut-in pressure according to the working condition of the vehicle.

[0087] For example, determining a working condition of the vehicle; if the vehicle is in a normal working condition, determining that the first air pressure value is not greater than a first vehicle cut-in pressure; if the vehicle is in a reverse drag working condition, determining that the first air pressure value is not greater than a second vehicle cut-in pressure; and if the vehicle is in a load carrying working condition, determining that the first air pressure value is not greater than a third vehicle cut-in pressure.

[0088] In the normal working condition, when the air pressure in the air tank 4 decreases to the first vehicle cut-in pressure due to reverse blowing regeneration, the regeneration valve 33 and the unloading valve 32 are controlled to be closed, the regeneration is stopped, and the air compressor 2 starts to pump air again. In the reverse drag working condition, when the air pressure in the air tank 4 decreases to the second vehicle cut-in pressure due to reverse blowing regeneration, the regeneration valve 33 and the unloading valve 32 are controlled to be closed, the regeneration is stopped, and the air compressor 2 starts to pump air again. In the load carrying working condition, when the air pressure in the air tank 4 decreases to the third vehicle cut-in pressure due to reverse blowing regeneration, the regeneration valve 33 and the unloading valve 32 are controlled to be closed, the regeneration is stopped, and the air compressor 2 starts to pump air again. The specific values of the first vehicle cut-in pressure, the second vehicle cut-in pressure, and the third vehicle cut-in pressure can be determined by statistical analysis of the pressure required for actual braking operation of the vehicle in different working conditions.

[0089] Therefore, by setting the regeneration control logic to control the stop of the regeneration program according to the working condition of the vehicle, the regeneration control of the dryer 3 of the vehicle is more intelligent, which is conducive to further improving the energy saving and consumption reduction effect.

[0090] In some embodiments, the first vehicle cut-in pressure is 10.2-10.8 bar, for example, the first vehicle cut-in pressure can be 10.2 bar, 10.4 bar, 10.5 bar, 10.6 bar, or 10.8 bar, the first vehicle cut-in pressure can be reasonably valued within the above range, and preferably the first vehicle cut-in pressure is 10.5 bar.

[0091] The second vehicle cut-in pressure is 11.4-11.8 bar, for example, the second vehicle cut-in pressure can be 11.4 bar, 11.5 bar, 11.6 bar, 11.7 bar or 11.8 bar, the second vehicle cut-in pressure can be reasonably valued within the above range, preferably the second vehicle cut-in pressure is 11.6 bar.

[0092] The third vehicle cut-in pressure is 10.2-10.8 bar, for example, the third vehicle cut-in pressure can be 10.2 bar, 10.4 bar, 10.5 bar, 10.6 bar or 10.8 bar, the third vehicle cut-in pressure can be reasonably valued within the above range, preferably the third vehicle cut-in pressure is 10.5 bar.

[0093] It should be noted that the embodiments referred to in the specification as "one embodiment", "an embodiment", "example embodiment", "some embodiments" and the like, can include a particular feature, structure, or characteristic, but every embodiment can not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of those skilled in the art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.

[0094] In general, terminology can be understood at least in part from usage in context. For example, terms, "and", "or", or "and / or" as used herein can be understood as having the same meaning as "one or more" when used to describe a feature, structure, or characteristic in connection with an embodiment. Similarly, the use of "about" in connection with a feature, structure, or characteristic can be understood as having the same meaning as "comprising" or "including" when used in connection with an embodiment.

[0095] It should be readily understood that the terms "on", "above", and "on top of" in the present disclosure are to be interpreted in the broadest possible manner such that "on" means not only "directly on" but also "on" with intervening features or layers therebetween, and "above" or "on top of" means not only "above" or "on top of" but also "above" or "on top of" with no intervening features or layers therebetween (i.e., directly on).

[0096] In addition, spatially relative terms, such as "beneath", "below", "lower", "above", "upper" and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. The spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. The devices can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0097] Finally, it should be noted that the above-described embodiments are merely intended for describing and illustrating, not limiting, the technical solutions of the present application; even though the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A vehicle dryer regeneration control system characterized by, The application relates to a vehicle air dryer regeneration control system and a regeneration control method thereof. The system comprises an engine, a chassis control device, an air compressor, a dryer, an air storage container and a brake mechanism, wherein the air compressor, the dryer, the air storage container and the brake mechanism are sequentially connected through an air supply pipeline; The air compressor and the dryer are further connected through a feedback pipeline, the air storage container and the dryer are connected through a back-blowing pipeline, and the gas flow directions in the feedback pipeline and the back-blowing pipeline are opposite to the gas flow direction in the air supply pipeline, The chassis control device is configured to determine a first air pumping amount of the air compressor in a current air pumping period, judge whether the first air pumping amount is greater than or equal to a first preset air pumping amount value, and control the air storage container to back-blow gas to the dryer for regeneration when the first air pumping amount is greater than or equal to the first preset air pumping amount value; the remaining air pumping amount of the air storage container after back-blowing regeneration in the current air pumping period is determined, and the remaining air pumping amount is added to the first air pumping amount in the next air pumping period.

2. The vehicle desiccant regeneration control system of claim 1, wherein, The air supply pipeline comprises: a first air supply section, one end of the first air supply section being communicated with the air compressor and the other end extending backward from the air compressor; a second air supply section, one end of the second air supply section being communicated with the dryer and the other end extending backward from the dryer; a transition connecting pipe, two ends of the transition connecting pipe being connected with the first air supply section and the second air supply section respectively, and the transition connecting pipe comprising an inner hose and a braided layer arranged outside the inner hose.

3. The vehicle desiccant regeneration control system of claim 1, wherein The dryer comprises an unloading valve for unloading and a regeneration valve for regeneration of the dryer, and the chassis control device is connected with the unloading valve and the regeneration valve respectively.

4. A regeneration control method of a regeneration control system of a vehicle dryer, characterized by, The regeneration control method applied to the vehicle air dryer regeneration control system according to any one of claims 1-3 comprises the following steps: determining a first air pumping amount of the air compressor in a current air pumping period; judging whether the first air pumping amount is greater than or equal to a first preset air pumping amount value, and controlling the air storage container to back-blow gas to the dryer for regeneration when the first air pumping amount is greater than or equal to the first preset air pumping amount value; determining the remaining air pumping amount of the air storage container after back-blowing regeneration in the current air pumping period, and adding the remaining air pumping amount to the first air pumping amount in the next air pumping period.

5. The regeneration control method of the vehicle dryer regeneration control system according to claim 4, characterized by, The first air pumping amount of the air compressor in the current air pumping period is obtained, specifically by the following formula: T=(Qxnxphxtxt) / 1000 determining the first air pumping amount, wherein T is the first air pumping amount, Q is the displacement of the air compressor, n is the rotating speed of the engine, phi is the speed ratio of the engine, rho is the volumetric efficiency of the engine, and t is the air pumping time.

6. The regeneration control method of the vehicle dryer regeneration control system according to claim 4, characterized by, The first preset air pumping amount ranges from 110L to 150L.

7. The regeneration control method of the vehicle dryer regeneration control system according to claim 4, characterized by, The control of the air storage container to back-blow gas to the dryer comprises the following steps: obtaining a first air pressure value in the air storage container; determining the size relationship between the first air pressure value and an unloading air pressure value; if the first air pressure value is greater than or equal to the unloading air pressure value, controlling the air storage container to start back-blowing gas operation.

8. The regeneration control method of the vehicle dryer regeneration control system according to claim 7, characterized by, Before the step of determining the size relationship between the first air pressure value and the unloading air pressure value, the method further comprises the steps of: acquiring a vehicle operating condition, the vehicle operating condition comprising one of a normal operating condition, a reverse drag operating condition, and a load operating condition; determining the unloading air pressure value according to the vehicle operating condition.

9. The regeneration control method of the vehicle dryer regeneration control system according to claim 7, characterized by, After the step of acquiring the first air pressure value, the method further comprises the steps of: when it is determined that the first air pressure value is less than or equal to a vehicle cut-in pressure, controlling the vehicle dryer regeneration control system to stop reverse blow regeneration.

10. The regeneration control method of the vehicle dryer regeneration control system according to claim 9, characterized by, Before the step of determining that the first air pressure value is less than or equal to the vehicle cut-in pressure, the method further comprises the steps of: acquiring a vehicle operating condition, the vehicle operating condition comprising one of a normal operating condition, a reverse drag operating condition, and a load operating condition; determining the vehicle cut-in pressure according to the vehicle operating condition.

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