CN112124283B - Electric control dryer and control method thereof - Google Patents
Electric control dryer and control method thereof Download PDFInfo
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- CN112124283B CN112124283B CN202010917562.8A CN202010917562A CN112124283B CN 112124283 B CN112124283 B CN 112124283B CN 202010917562 A CN202010917562 A CN 202010917562A CN 112124283 B CN112124283 B CN 112124283B
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- pressure value
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- unloading
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/002—Air treatment devices
- B60T17/004—Draining and drying devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
- B01D53/261—Drying gases or vapours by adsorption
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
- B01D2259/40086—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by using a purge gas
Abstract
The embodiment of the invention provides an electronic control dryer and a control method thereof, wherein the electronic control dryer comprises a drying tank and a first one-way valve, one end of the drying tank is connected with an air inlet, and the other end of the drying tank is connected with an air outlet through the first one-way valve; the electronic control dryer also comprises a controller, an electromagnetic valve connected with the controller and an unloading valve connected with the exhaust port, wherein the first end of the electromagnetic valve is connected with a pipeline between the first one-way valve and the air outlet, the second end of the electromagnetic valve is connected with the unloading valve, and the third end of the electromagnetic valve is connected with the exhaust port; the electronic control dryer further comprises a second one-way valve and a throttle valve, one end of the second one-way valve is connected with a pipeline between the electromagnetic valve and the unloading valve, the other end of the second one-way valve is connected with a pipeline between the drying tank and the first one-way valve through the throttle valve, and the other end of the drying tank is connected with the unloading valve, so that the electronic control dryer is optimized, unloading and regeneration back flushing can be simultaneously realized by adopting one electromagnetic valve, and the cost of the electronic control dryer is reduced.
Description
Technical Field
The invention relates to the field of dryers, in particular to an electric control dryer and a control method thereof.
Background
Along with the development of automobile electromotion technology, an electric air compressor is used for supplying air for a braking system in an automobile, and the electric air compressor needs to be provided with an electric control dryer for matching use.
In the prior art, an electromagnetic valve is usually adopted in an electric control dryer to realize the functions of unloading and regeneration reblowing, but the existing electric control dryer has a complex structure and higher cost.
Disclosure of Invention
In view of the above problems, it is proposed to provide an electrically controlled dryer and a control method thereof which overcome or at least partially solve the above problems, including:
an electric control dryer comprises a drying tank and a first one-way valve, wherein one end of the drying tank is connected with an air inlet, and the other end of the drying tank is connected with an air outlet through the first one-way valve;
the electronic control dryer also comprises a controller, an electromagnetic valve connected with the controller and an unloading valve connected with an exhaust port, wherein the first end of the electromagnetic valve is connected with a pipeline between the first one-way valve and the air outlet, the second end of the electromagnetic valve is connected with the unloading valve, and the third end of the electromagnetic valve is connected with the exhaust port;
the electronic control dryer further comprises a second one-way valve and a throttle valve, one end of the second one-way valve is connected with the electromagnetic valve and the pipeline between the unloading valves, the other end of the second one-way valve is connected with the drying tank and the pipeline between the first one-way valves through the throttle valve, and the other end of the drying tank is connected with the unloading valves.
Optionally, the positive direction of first check valve is the drying cylinder extremely the direction of gas outlet, the positive direction of second check valve is the solenoid valve extremely the direction of drying cylinder.
Optionally, the controller has a two-pin hub, a three-pin hub, and a four-pin hub;
the two-pin connector is used for controlling the electric air compressor, the three-pin connector is used for collecting the air pressure value of the air storage cylinder, and the four-pin connector is used for power supply and/or bus communication.
Optionally, the solenoid valve is a two-position three-way solenoid valve, and the unloading valve is a two-position two-way solenoid valve.
A method for controlling an electrically controlled dryer as described above, the controller being connected to an air reservoir and an electric air compressor, respectively, the method comprising:
the controller acquires the air pressure value of the air cylinder;
when the controller detects that the air pressure value is smaller than a preset secondary air supply pressure value, the controller controls the electric air compressor to enable;
and when the controller detects that the air pressure value is greater than a preset unloading pressure value, the controller controls the electric air compressor to stop enabling.
Optionally, the method further comprises:
and the controller controls the first end and the second end of the electromagnetic valve to be communicated under the condition that the air pressure value is greater than the unloading pressure value.
Optionally, the controller controls the first end and the second end of the electromagnetic valve to communicate when the air pressure value is greater than the unloading pressure value, and includes:
the controller judges whether the air pressure value is greater than a preset maximum unloading pressure value or not under the condition that the air pressure value is greater than the unloading pressure value;
when the controller judges that the air pressure value is larger than the maximum unloading pressure value, the first end and the second end of the electromagnetic valve are controlled to be communicated;
and when the controller judges that the air pressure value is less than or equal to the maximum unloading pressure value and if the controller judges that a preset regeneration back-blowing condition is met, the first end and the second end of the electromagnetic valve are controlled to be communicated.
Optionally, the regenerative blow-back condition includes:
the time interval from the last regeneration back flushing is greater than the preset time interval;
and/or the pumping capacity of the electric air compressor after the last regeneration back flushing is larger than the preset single maximum drying volume of the drying tank.
Optionally, the method further comprises:
and under the condition that the first end and the second end of the electromagnetic valve are communicated, if the controller detects that the air pressure value is less than or equal to the back blowing stopping pressure value, the first end and the second end of the electromagnetic valve are controlled to be disconnected.
Optionally, the method further comprises:
the controller determines the real-time air pumping quantity under the condition that the electric air compressor is enabled;
the controller determines a predicted pump gas volume;
and the controller generates fault information when detecting that the real-time pumping capacity is not matched with the predicted pumping capacity.
The embodiment of the invention has the following advantages:
in the embodiment of the invention, the electric control dryer comprises a drying tank and a first one-way valve, one end of the drying tank is connected with the air inlet, and the other end of the drying tank is connected with the air outlet through the first one-way valve; the electronic control dryer also comprises a controller, an electromagnetic valve connected with the controller and an unloading valve connected with the exhaust port, wherein the first end of the electromagnetic valve is connected with a pipeline between the first one-way valve and the air outlet, the second end of the electromagnetic valve is connected with the unloading valve, and the third end of the electromagnetic valve is connected with the exhaust port; the electronic control dryer further comprises a second one-way valve and a throttle valve, one end of the second one-way valve is connected with a pipeline between the electromagnetic valve and the unloading valve, the other end of the second one-way valve is connected with a pipeline between the drying tank and the first one-way valve through the throttle valve, and the other end of the drying tank is connected with the unloading valve, so that the electronic control dryer is optimized, unloading and regeneration back flushing can be simultaneously realized by one electromagnetic valve, and the cost of the electronic control dryer is reduced.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of an electrically controlled dryer according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an electrically controlled dryer according to an embodiment of the present invention;
FIG. 3a is a schematic diagram of an electrically controlled dryer according to an embodiment of the present invention;
FIG. 3b is a schematic diagram of another electrically controlled dryer according to an embodiment of the present invention;
FIG. 3c is a schematic diagram of another electrically controlled dryer according to an embodiment of the present invention;
FIG. 3d is a schematic diagram of another electrically controlled dryer according to an embodiment of the present invention;
FIG. 4 is a flowchart illustrating steps of a method for controlling an electronically controlled dryer, according to an embodiment of the present invention;
fig. 5 is a schematic diagram of an example of the control of an electronically controlled dryer according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In practical application, the electric control dryer can be applied to a braking system of an automobile, as shown in fig. 1, the electric control dryer can be connected with an electric air compressor by adopting an air path pipeline, and can be connected with a front braking air cylinder and a rear braking air cylinder by adopting an air path pipeline through a four-loop protection valve.
As shown in fig. 1, the front braking air reservoir may be connected to the first air pressure sensor, the rear braking air reservoir may be connected to the second air pressure sensor, and the electric control dryer may be connected to the first air pressure sensor and the second air pressure sensor through circuits, respectively, so as to collect air pressure sensing data, and may be connected to the electric air compressor through circuits, so as to control the electric air compressor to provide compressed air, and to transfer the dried air to the front braking air reservoir and the rear braking air reservoir, so as to supply air.
Referring to fig. 2, a schematic structural diagram of an electrically controlled dryer according to an embodiment of the present invention is shown.
In one aspect, the electric dryer may include an air inlet 1, a drying tank 102, a first check valve 103, and an air outlet 2, wherein one end of the drying tank 102 may be connected to the air inlet 1 by using an air pipe 101, and the other end of the drying tank 102 is connected to the air outlet 2 by using the first check valve 103.
Wherein, the drying cylinder 102 can be integrated with oil filter cotton for filtering oil and molecular sieve for drying air by absorbing moisture, the positive direction of the first one-way valve 103 can be the direction from the drying cylinder 102 to the air outlet 2, i.e. the gas can only be transmitted along the direction from the drying cylinder 102 to the air outlet 2, thereby avoiding the clean dry gas in the gas cylinder from being reversely transmitted from the first one-way valve 103 to the drying cylinder 102.
In the process of gas drying, gas from the electric air compressor can enter the electric dryer from the gas inlet 1 of the electric dryer and reach the drying tank 102 through the gas pipeline 101, water molecules in the gas can be adsorbed by the molecular sieve in the drying tank 102, and a trace amount of lubricating oil carried along with the compressed air can be filtered and adsorbed by the oil filter cotton in the drying tank 102.
After drying and filtering, the clean and dry gas dried and filtered by the drying tank passes through the first one-way valve 103, and is discharged out of the electric control dryer from the gas outlet 2 of the electric control dryer, and the clean and dry gas can reach the four-loop protection valve and is distributed to each gas cylinder through the four-loop protection valve.
On the other hand, the electric dryer may further include a controller 100, a solenoid valve 104 connected to the controller 100, and an unloading valve 107 connected to the exhaust port 3, a first end of the solenoid valve 104 may be connected to a pipe between the first check valve 103 and the gas outlet 2 using a gas pipe 105, a second end of the solenoid valve 104 may be connected to the unloading valve 107 using a gas pipe 106, and a third end of the solenoid valve 104 may be connected to the exhaust port 3 using a gas pipe 110.
The solenoid valve 104 may be a two-position three-way solenoid valve, the unloading valve 107 may be a two-position two-way solenoid valve, and the controller 100 may have a two-pin connector X1(EAC), three-pin connectors X2 and X3(PS), and a four-pin connector X4 (CANA-SPL/GND).
Specifically, the two-pin connector X1 may be used to control the electric air compressor, such as controlling the enabling and disabling of the electric air compressor; the three-pin plug-in connectors X2 and X3 CAN be used for collecting air pressure values of the air cylinders, air pressure sensors of a first circuit loop and a second circuit loop of the braking system in the figure 1 CAN be connected to the electric control dryer through the two three-pin plug-in connectors, and then the electric control dryer CAN send the air pressure sensors to other system controllers needing the information in a CAN message mode, the electric control dryer CAN judge system states according to the air pressure values and continuous time of the braking system fed back by the two air pressure sensors, and whether the electric air compressor is enabled or not is determined or the electric air compressor is not enabled; the four pin jack X4 may be used for power and/or bus (CAN) communications.
It should be noted that, for a vehicle in which the air pressure sensors of the first loop and the second loop of the brake system are connected to other controllers, the electronically controlled dryer may also receive the air pressure values of the first loop and the second loop of the brake system in real time in the form of CAN communication.
When the controller 100 actuates the solenoid valve 104, the solenoid valve 104 is actuated via the lines 6.1 and 6.2 against the action of the spring force, so that the first and second ends of the solenoid valve 104 are connected, i.e. the gas line 106 and the gas line 105 are connected, and the second and third ends of the solenoid valve 104 are disconnected, i.e. the gas line 106 and the gas line 110 are disconnected.
Since the gas pipe 106 and the gas pipe 105 are communicated, the clean dry gas in the gas cartridge will pass through the gas outlet 2, the gas pipe 105, the electromagnetic valve 104, the gas pipe 106 and reach the control port of the unloading valve 107, the piston is pushed to open the gas outlet 3 against the action of the spring force, and the compressed gas remaining in the gas pipe 101 will be discharged to the atmosphere from the gas outlet 3 through the unloading valve.
When the controller 100 stops driving the solenoid valve 104, the second end and the third end of the solenoid valve 104 are connected, i.e., the gas pipe 106 and the gas pipe 110 are connected, and the first end and the second end of the solenoid valve 104 are disconnected, i.e., the gas pipe 106 and the gas pipe 105 are disconnected.
Since the gas pipe 106 and the gas pipe 110 are communicated, the gas in the unloading valve 107 can be discharged through the gas pipe 106, the electromagnetic valve 104, the gas pipe 110, the gas outlet 3, and the clean dry gas in the gas cartridge cannot pass through the electromagnetic valve 104.
In still another aspect, the electric dryer may further include a second check valve 108, and a throttle valve 109, one end of the second check valve 108 may be connected to the pipe 106 between the solenoid valve 104 and the unloading valve 107, the other end of the second check valve 108 may be connected to the pipe between the drying tub 102 and the first check valve 103 through the throttle valve 109, and the other end of the drying tub 102 may be connected to the unloading valve 107.
The positive direction of the second check valve 108 may be the direction from the electromagnetic valve 104 to the drying cylinder 102, and the size of the through diameter of the throttle valve 109 may be adjustable, which may be used to control the size of the regeneration blowback gas amount per unit time.
When the controller 100 drives the electromagnetic valve 104, that is, the gas pipeline 106 and the gas pipeline 105 are communicated, the dry clean high-pressure gas in the gas cylinder can be regenerated and blown back to the drying tank 102 through the gas pipeline 105, the electromagnetic valve 104, the gas pipeline 106, the second check valve 108 and the throttle valve 109, and water molecules and the like adsorbed by the drying agent in the drying tank 102 are discharged into the atmosphere through the unloading valve 107 and the outlet 3 along with the high-pressure gas.
When the regeneration back-blowing process needs to be stopped, the controller 100 can stop driving the electromagnetic valve 104, the electromagnetic valve 104 can cut off the communication between the gas pipeline 105 and the gas pipeline 106 under the action of the spring force, the gas pipeline 106 is communicated with the gas pipeline 110, and the compressed gas at the control port of the unloading valve 107 can be exhausted into the atmosphere through the internal pipeline 106 and the electromagnetic valve 104 and then through the gas pipeline 110 from the exhaust port 3, so that the complete regeneration back-blowing process is realized.
In an embodiment of the present invention, as shown in fig. 3a, the electronically controlled dryer may further include a four-circuit protection valve 112 connected to the air outlet 2, and further connected to the air reservoir through the four-circuit protection valve 112, i.e. the electronically controlled dryer assembly integrates the four-circuit protection valve 112.
In an embodiment of the present invention, as shown in fig. 3b, the electronically controlled dryer may further include a heater 113 for heating the electronically controlled dryer, and the electronically controlled dryer is heated when the ambient temperature is lower than the set value, so as to prevent the moisture remaining at the exhaust port 3 of the electronically controlled dryer from freezing due to low temperature, i.e. the electronically controlled dryer assembly is integrated with the heater 113.
In an embodiment of the present invention, as shown in fig. 3c, the electronically controlled dryer may further include an air pressure detecting joint 114 connected to the pipe between the air inlet 1 and the drying tank, the air pressure detecting joint 114 may detect the tightness of the system, and the system may be further supplied with air from an external air source, i.e. the electronically controlled dryer assembly integrates the air pressure detecting joint.
In an embodiment of the present invention, as shown in fig. 3d, the electronically controlled dryer may further comprise an air suspension air intake port 115 connected to the air outlet 2, which may provide a separate air intake port for a vehicle with an air suspension, i.e. the electronically controlled dryer assembly integrates an air suspension air intake port.
In the embodiment of the invention, the electric control dryer comprises a drying tank and a first one-way valve, one end of the drying tank is connected with the air inlet, and the other end of the drying tank is connected with the air outlet through the first one-way valve; the electronic control dryer also comprises a controller, an electromagnetic valve connected with the controller and an unloading valve connected with the exhaust port, wherein the first end of the electromagnetic valve is connected with a pipeline between the first one-way valve and the air outlet, the second end of the electromagnetic valve is connected with the unloading valve, and the third end of the electromagnetic valve is connected with the exhaust port; the electronic control dryer further comprises a second one-way valve and a throttle valve, one end of the second one-way valve is connected with a pipeline between the electromagnetic valve and the unloading valve, the other end of the second one-way valve is connected with a pipeline between the drying tank and the first one-way valve through the throttle valve, and the other end of the drying tank is connected with the unloading valve, so that the electronic control dryer is optimized, unloading and regeneration back flushing can be simultaneously realized by one electromagnetic valve, and the cost of the electronic control dryer is reduced.
Referring to fig. 4, a flowchart illustrating steps of a method for controlling an electronically controlled dryer, which may be applied to a controller 100 of the electronically controlled dryer, according to an embodiment of the present invention, is shown, where the controller 100 is connected to an air tank and an electric air compressor, respectively.
Specifically, the method can comprise the following steps:
in practical applications, as shown in fig. 2, the controller 100 can obtain the air pressure value of the air cylinder from the air pressure sensor of the air cylinder through the three-pin connectors X2 and X3, respectively.
after the air pressure value of the air storage cylinder is obtained, whether the air pressure value is smaller than a preset secondary air supply pressure value or not can be judged, and if the air pressure value is larger than or equal to the secondary air supply pressure value, operation can be omitted.
If the air pressure value is smaller than the secondary air supply pressure value, the electric air compressor can be controlled to be enabled, and the second fund enables air compressed by the electric air compressor to enter the drying tank 102 through the air inlet 1, and the air is dried and filtered in the drying tank 102 and then is conveyed to the air storage cylinder through the first one-way valve 103 and the air outlet 2.
In step 403, the controller 100 controls the electric air compressor to stop enabling when detecting that the air pressure value is greater than a preset unloading pressure value.
After the air pressure value of the air storage cylinder is obtained, the air pressure value can be judged to be larger than a preset unloading pressure value, if the air pressure value is smaller than or equal to the unloading pressure value, the operation can be stopped, and if the air pressure value is larger than the unloading pressure value, the electric air compressor can be controlled to stop enabling, so that more air is prevented from being introduced.
In the embodiment of the invention, the air pressure value of the air storage cylinder is obtained, the electric air compressor is controlled to be enabled when the air pressure value is detected to be smaller than the preset secondary air supply pressure value, and the electric air compressor is controlled to be stopped to be enabled when the air pressure value is detected to be larger than the preset unloading pressure value, so that the intelligent control on starting and stopping of the electric air compressor is realized, and the air consumption requirement of a vehicle can be better met.
In an embodiment of the present invention, the method may further include the steps of:
the controller 100 controls the first end and the second end of the electromagnetic valve 104 to be communicated when the air pressure value is larger than the unloading pressure value.
In order to perform unloading and regenerative blow-back, the controller 100 may control the first end and the second end of the electromagnetic valve 104 to communicate with each other when the air pressure is greater than the unloading pressure value, so that the gas in the gas cartridge may be discharged through the electromagnetic valve 104, the unloading valve 107, and the exhaust port 3, thereby achieving unloading.
Moreover, the gas in the gas cylinder can be transmitted to the drying tank 102 through the electromagnetic valve 104, the second one-way valve 108 and the throttle valve 109, and the gas in the drying tank 102 can be discharged through the unloading valve 107 and the exhaust port 3, so that the regeneration blowback is realized.
In the embodiment of the invention, under the condition that the air pressure value is greater than the unloading pressure value, the first end and the second end of the electromagnetic valve 104 are controlled to be communicated, so that the unloading and the regenerative back flushing of the intelligent control electric control dryer are realized, and the unloading and the regenerative back flushing can be simultaneously realized through one electromagnetic valve 104.
In an embodiment of the present invention, in a case that the air pressure value is greater than the unloading pressure value, the controller 100 controls the first end and the second end of the electromagnetic valve 104 to communicate, and may include the following sub-steps:
the controller 100 determines whether the air pressure value is greater than a preset maximum unloading pressure value when the air pressure value is greater than the unloading pressure value; when the controller 100 determines that the air pressure value is greater than the maximum unloading pressure value, the first end and the second end of the electromagnetic valve 104 are controlled to be communicated; when the controller 100 determines that the air pressure value is less than or equal to the maximum unloading pressure value, if it is determined that a preset regeneration back-flushing condition is met, the first end and the second end of the electromagnetic valve 104 are controlled to be communicated.
The regenerative blowback condition may include:
the time interval from the last regeneration back flushing is greater than the preset time interval;
and/or the pumping capacity of the electric air compressor after the last regeneration back flushing is larger than the preset single maximum drying capacity of the drying tank 102.
When the air pressure value is greater than the unloading pressure value, whether the air pressure value is greater than a preset maximum unloading pressure value or not can be further judged, and when the air pressure value is greater than the maximum unloading pressure value, the first end and the second end of the electromagnetic valve 104 can be directly controlled to be communicated so as to carry out unloading and regenerative back flushing.
When the air pressure value is judged to be less than or equal to the maximum unloading pressure value, whether a preset regeneration back-blowing condition is met or not can be further detected, if the regeneration back-blowing condition is not met, the operation can be omitted, and if the regeneration back-blowing condition is met, the first end and the second end of the electromagnetic valve 104 can be controlled to be communicated so as to carry out unloading and regeneration back-blowing.
In an embodiment of the present invention, the method may further include the steps of:
under the condition that the first end and the second end of the electromagnetic valve 104 are communicated, if the air pressure value is detected to be smaller than or equal to the back blowing stopping pressure value, the controller 100 controls the first end and the second end of the electromagnetic valve 104 to be disconnected.
The pressure value of the back blowing stopping can be a pressure value corresponding to the quantity of the regenerated back blowing gas, and the quantity of the regenerated back blowing gas is related to the volume of the gas storage cylinder.
Under the condition that the first end and the second end of the electromagnetic valve 104 are communicated, whether the air pressure value is smaller than or equal to the stop back-blowing pressure value or not can be further detected, if the air pressure value is detected to be larger than the stop back-blowing pressure value, operation can be omitted, if the air pressure value is detected to be smaller than or equal to the stop back-blowing pressure value, the first end and the second end of the electromagnetic valve 104 can be controlled to be disconnected, unloading and regeneration back-blowing are stopped, intelligent regeneration back-blowing is achieved according to the saturation of the drying agent, the condition of excessive regeneration back-blowing is avoided, and the electric energy of the whole vehicle is saved.
In an embodiment of the present invention, the method may further include the steps of:
the controller 100 determines a real-time pumping capacity under the condition that the electric air compressor is enabled; the controller 100 determines a predicted pump gas amount; the controller 100 generates fault information when it is detected that the real-time pumping amount and the predicted pumping amount do not match.
Under the condition that the electric air compressor is enabled, the air pressure of the system CAN be judged to rise according to the total volume of the air storage cylinder and the air consumption condition of the vehicle, namely, the real-time air pumping quantity is calculated, the predicted air pumping quantity CAN be calculated according to the air pumping time of the electric air compressor, when the fact that the real-time air pumping quantity is not matched with the predicted air pumping quantity is detected, faults such as serious air leakage and the like possibly exist, fault information is generated, the fault information CAN be sent to the outside in the form of a CAN message, an alarm is given, and the driving safety is guaranteed.
In an embodiment of the present invention, the method may further include the steps of:
the controller 100 controls the first end and the second end of the electromagnetic valve 104 to be communicated if the air pressure value is detected to be greater than a preset maximum pumping pressure value in the enabled state of the electric air compressor.
After the controller 100 applies high voltage to the electric air compressor, the electric air compressor may be in an enabled state, and if the controller 100 of the electric dryer loses control over the electric air compressor due to a line problem, the electric air compressor cannot be disabled, and further the electric air compressor cannot be enabled to stop pumping, a failure operating mode may be set.
In the failure mode, when the controller 100 obtains a pressure value exceeding a set maximum pump air pressure value through an air pressure sensor connected with the plug connector, for example, the plug connectors X2 and X3 obtain the pressure value in fig. 2, or the plug connector X4 obtains the pressure value through CAN information, the controller 100 CAN control the first end and the second end of the electromagnetic valve 104 to be communicated, and further control the electromagnetic valve 104 to open the unloading valve 107, so that the system pressure is reduced, and meanwhile, the failure information CAN be reported through the plug connector, for example, the plug connector X4 in fig. 2 prompts a user of a system failure, thereby avoiding that the system pressure will be continuously increased due to control failure of the electric air compressor.
In an embodiment of the present invention, the method may further include the steps of:
the controller 100 determines a total dry gas amount of the dry tank 102; the controller 100 uses the total amount of dry gas, and the controller 100 determines the remaining usage time of the dry tank 102; and/or the controller 100 generates a replacement prompt message for the drying tank 102 when the total dry air amount is greater than or equal to a preset maximum total dry air amount.
In specific implementation, the electric control dryer CAN obtain the rotation speed information of the electric air compressor and the exhaust gas volume in unit time through the plug, and further CAN calculate the total dry air volume of the drying tank 102, for example, the information obtained by the CAN loop of the plug X4 in fig. 2, and then CAN calculate the remaining service time of the drying tank 102 according to the total dry air volume by combining the air volume of daily driving of the vehicle and the maximum total dry air volume of the drying tank 102 of the electric control dryer, so as to predict the replacement date of the drying tank 102.
Moreover, when the total dry air amount of the dry tank 102 reaches the designed maximum total dry air amount, the electronically controlled dryer controller 100 may send a dry tank 102 replacement prompt message through the plug, such as the CAN bus send message of the plug X4 in fig. 2, to prompt the user to replace the dry tank 102.
An embodiment of the invention is illustrated below with reference to fig. 5:
s01: the controller 100 of the electronic control dryer can obtain a system pressure value (namely, the air pressure value of the air reservoir) returned by the air pressure sensor, and judge whether the system pressure is greater than a set unloading pressure value Ps; if the system pressure value is larger than the set unloading pressure value Ps, entering S06, otherwise, entering S02;
s02: judging whether the system pressure value is smaller than the secondary air supply pressure value Po, if so, entering S03, otherwise, returning to S01;
s03: the system controls the electric air compressor to enable, starts to pump air to the system, and calculates the air pumping quantity and the pressure change of the system at the same time;
s04: the system calculates the pumping capacity (i.e., predicted pumping capacity) according to the pumping time of the air compressor, and determines whether the pressure rise of the system (i.e., real-time pumping capacity) matches the calculated pumping capacity according to the total volume of the air reservoir and the vehicle gas usage, and returns to S01 if the pressure rise of the system matches the pumping capacity. If the system air pressure rises and the pump air volume is not matched, the step S05 is carried out, otherwise, the step S01 is returned;
s05: and the system judges that the air pressure rise of the system is not matched with the air pumping quantity according to the step S04, indicates that the system has faults such as serious air leakage and the like, sends out system fault information in the form of CAN messages, alarms and returns to S01.
S06: on the premise that the system judges that the system pressure is greater than the set unloading pressure value Ps according to the step S01, it is further judged whether the current system pressure is lower than the maximum unloading pressure value Ps'. If the current system pressure is larger than the maximum unloading pressure value Ps', entering S11, otherwise, entering S07;
s07: when the system judges that the system pressure is greater than the unloading pressure value Ps and is smaller than the maximum unloading pressure value at the same time according to the steps of S01 and S06, whether the pump air amount from the last time to the regenerative air compressor at the moment exceeds the single maximum drying volume Vo of the drying tank or not is further judged, if yes, S10 is carried out, and if not, S08 is carried out;
s08: the system judges whether the interval time from the last regenerative back flushing is greater than the set time N minutes (namely the preset time interval), if so, the S10 is entered, otherwise, the S09 is entered;
s09: after the step is carried out, the electric control dryer does not need to carry out regeneration back blowing, the electric control dryer controls the electric air compressor to stop enabling, and then the step returns to S01;
s10: after the step is carried out, it is indicated that the pressure value of the system reaches the unloading pressure value, meanwhile, when the electric control dryer dries the air supplied by the electric air compressor, the adsorbed moisture is saturated, the electric control dryer controls the electric air compressor to stop enabling, and meanwhile, regeneration back blowing is carried out, and when the air quantity of the regeneration back blowing reaches delta P (namely, the first stopping back blowing pressure value), the system returns to S01;
s11: when the system judges that the system pressure is greater than the maximum unloading pressure Ps 'according to the step S06, the electric air compressor is not controlled by the electric dryer, the electric dryer can still control the electric air compressor to stop enabling, and regeneration back blowing can be performed at the same time, the regeneration back blowing air flow is Ps' -Ps + delta P (namely a first stop back blowing pressure value), and the step S01 is returned after the regeneration is finished.
It should be noted that, for simplicity of description, the method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present invention is not limited by the illustrated order of acts, as some steps may occur in other orders or concurrently in accordance with the embodiments of the present invention. Further, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred and that no particular act is required to implement the invention.
An embodiment of the present invention also provides an electronic device, which may include a processor, a memory, and a computer program stored on the memory and capable of running on the processor, the computer program, when executed by the processor, implementing the steps of the control method of the electrically controlled dryer as such.
An embodiment of the present invention also provides a computer-readable storage medium on which a computer program is stored, the computer program, when executed by a processor, implementing the steps of the method of controlling the electrically controlled dryer as such.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus, or computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing terminal to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing terminal to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing terminal to cause a series of operational steps to be performed on the computer or other programmable terminal to produce a computer implemented process such that the instructions which execute on the computer or other programmable terminal provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
The above-mentioned detailed description is provided for an electric control dryer and a control method thereof, and the principle and the implementation of the present invention are explained by applying specific examples, and the description of the above-mentioned examples is only used to help understanding the method of the present invention and the core idea thereof; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (8)
1. An electronic control dryer is characterized by comprising a drying tank (102) and a first one-way valve (103), wherein one end of the drying tank (102) is connected with an air inlet (1), and the other end of the drying tank (102) is connected with an air outlet (2) through the first one-way valve (103);
the electronic control dryer further comprises a controller (100), an electromagnetic valve (104) connected with the controller (100), and an unloading valve (107) connected with an exhaust port (3), wherein a first end of the electromagnetic valve (104) is connected with a pipeline between the first one-way valve (103) and the air outlet (2), a second end of the electromagnetic valve (104) is connected with the unloading valve (107), and a third end of the electromagnetic valve (104) is connected with the exhaust port (3);
the electronic control dryer further comprises a second one-way valve (108) and a throttle valve (109), one end of the second one-way valve (108) is connected with a pipeline between the electromagnetic valve (104) and the unloading valve (107), the other end of the second one-way valve (108) is connected with a pipeline between the drying tank (102) and the first one-way valve (103) through the throttle valve (109), and the other end of the drying tank (102) is connected with the unloading valve (107);
wherein the positive direction of the first one-way valve (103) is the direction from the drying tank (102) to the air outlet (2), and the positive direction of the second one-way valve (108) is the direction from the electromagnetic valve (104) to the drying tank (102);
wherein the controller (100) has a two-pin connector, a three-pin connector, and a four-pin connector;
the two-pin connector is used for controlling the electric air compressor, the three-pin connector is used for collecting the air pressure value of the air storage cylinder, and the four-pin connector is used for power supply and/or bus communication.
2. The electrically controlled dryer according to claim 1, characterized in that the solenoid valve (104) is a two-position three-way solenoid valve and the unloading valve (107) is a two-position two-way solenoid valve.
3. A method of controlling an electrically controlled dryer according to any one of claims 1-2, said controller (100) being connected to a gas cartridge and an electric air compressor, respectively, characterized in that the method comprises:
the controller (100) acquires the air pressure value of the air cylinder;
the controller (100) controls the electric air compressor to enable when detecting that the air pressure value is smaller than a preset secondary air supply pressure value;
and when detecting that the air pressure value is greater than a preset unloading pressure value, the controller (100) controls the electric air compressor to stop enabling.
4. The method of claim 3, further comprising:
the controller (100) controls the first end and the second end of the electromagnetic valve (104) to be communicated under the condition that the air pressure value is larger than the unloading pressure value.
5. The method of claim 4, wherein the controller (100) controls the first and second ends of the solenoid valve (104) to communicate if the air pressure value is greater than the unloading pressure value, comprising:
the controller (100) judges whether the air pressure value is greater than a preset maximum unloading pressure value or not under the condition that the air pressure value is greater than the unloading pressure value;
when the controller (100) judges that the air pressure value is larger than the maximum unloading pressure value, the first end and the second end of the electromagnetic valve (104) are controlled to be communicated;
and when the controller (100) judges that the air pressure value is less than or equal to the maximum unloading pressure value and if the preset regeneration back-blowing condition is met, the first end and the second end of the electromagnetic valve (104) are controlled to be communicated.
6. The method of claim 5, wherein the regenerative blow-back condition comprises:
the time interval from the last regeneration back flushing is greater than the preset time interval;
and/or the pumping air quantity of the electric air compressor after the last regeneration back blowing is larger than the preset single maximum drying volume of the drying tank (102).
7. The method of claim 4, further comprising:
and under the condition that the first end and the second end of the electromagnetic valve (104) are communicated, if the controller (100) detects that the air pressure value is less than or equal to the back blowing stopping pressure value, the first end and the second end of the electromagnetic valve (104) are controlled to be disconnected.
8. The method of claim 3, further comprising:
the controller (100) determines a real-time pumping air quantity under the condition that the electric air compressor is enabled;
the controller (100) determines a predicted pump gas amount;
the controller (100) generates fault information when it is detected that the real-time pumping capacity and the predicted pumping capacity do not match.
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| CN115155260B (en) * | 2022-07-05 | 2023-10-27 | 东风柳州汽车有限公司 | Commercial vehicle double-parameter electronic air treatment system and dryer regeneration control method |
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Application publication date: 20201225 Assignee: Beijing Zhike chelian Technology Co.,Ltd. Assignor: BEIQI FOTON MOTOR Co.,Ltd. Contract record no.: X2022980018253 Denomination of invention: An electric control dryer and its control method Granted publication date: 20220311 License type: Common License Record date: 20221013 |