CN116588052A - Hydraulic retarder control device and control method based on switch-type electromagnetic valve - Google Patents
Hydraulic retarder control device and control method based on switch-type electromagnetic valve Download PDFInfo
- Publication number
- CN116588052A CN116588052A CN202310745411.2A CN202310745411A CN116588052A CN 116588052 A CN116588052 A CN 116588052A CN 202310745411 A CN202310745411 A CN 202310745411A CN 116588052 A CN116588052 A CN 116588052A
- Authority
- CN
- China
- Prior art keywords
- electromagnetic valve
- air
- air inlet
- air pressure
- pressure value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000007599 discharging Methods 0.000 claims description 3
- 230000004044 response Effects 0.000 abstract description 3
- 210000000664 rectum Anatomy 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
-
- 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
- B60T10/00—Control or regulation for continuous braking making use of fluid or powdered medium, e.g. for use when descending a long slope
- B60T10/02—Control or regulation for continuous braking making use of fluid or powdered medium, e.g. for use when descending a long slope with hydrodynamic brake
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Transmission Of Braking Force In Braking Systems (AREA)
Abstract
The invention discloses a hydraulic retarder control device and a control method based on a switch-type electromagnetic valve. The device comprises two air inlet electromagnetic valves, two air outlet electromagnetic valves, a safety electromagnetic valve, an air pressure sensor and a control handle; the air inlet ends of the two air inlet electromagnetic valves are connected with an air source, and the air outlet ends of the two air inlet electromagnetic valves are connected with a hydraulic retarder; the air inlet ends of the two air inlet electromagnetic valves are connected with the air outlet ends of the two air inlet electromagnetic valves through an air circuit; the air inlet end of the safety electromagnetic valve is connected with the air outlet ends of the two air inlet electromagnetic valves through an air circuit and is connected with the air inlet ends of the two air outlet electromagnetic valves; a pressure sensor is arranged among the hydraulic retarder, the two air inlet electromagnetic valves and the two air outlet electromagnetic valves; the two air inlet electromagnetic valves, the two air outlet electromagnetic valves and the control handle are all connected with the hydrodynamic retarder controller through connectors; the air pressure sensor is connected with the hydraulic retarder controller. The invention has the advantages of quick response, low cost, high control precision, long service life, safety, stability and reliability.
Description
Technical Field
The invention relates to a hydraulic retarder control technology of a commercial vehicle, in particular to a hydraulic retarder control device and a hydraulic retarder control method based on a switch-type electromagnetic valve.
Background
Most of the current hydrodynamic retarders are realized by pushing hydraulic oil into working cavities of a stator and a rotor in the hydrodynamic retarder through compressed gas. The valve body for controlling the compressed gas to enter the hydraulic retarder is mainly an integrated proportional electromagnetic valve and other switch-type electromagnetic valves. The proportional electromagnetic valve has the problems of high cost, high requirement on product consistency, insensitive air pressure adjustment and the like; other switch-type electromagnetic valves have inaccurate air pressure control, so that the air pressure has larger fluctuation in the adjusting process, the electromagnetic valve acts frequently, the service life is influenced, and meanwhile, the whole interior has no safety protection structure and other problems.
Disclosure of Invention
In view of the problems and defects existing in the prior art, the invention provides a hydraulic retarder control device and a control method based on a switch-type electromagnetic valve.
The technical scheme adopted by the invention is as follows: a hydraulic retarder control device based on a switch-type electromagnetic valve comprises a first air inlet electromagnetic valve, a second air inlet electromagnetic valve, a first air outlet electromagnetic valve, a second air outlet electromagnetic valve, a safety electromagnetic valve, an air pressure sensor and a control handle; the air inlet ends of the first air inlet electromagnetic valve and the second air inlet electromagnetic valve are connected with an air inlet source, and the air outlet ends of the first air inlet electromagnetic valve and the second air inlet electromagnetic valve are connected with a hydraulic retarder to provide compressed air for the hydraulic retarder; the air inlet ends of the first air inlet electromagnetic valve and the second air inlet electromagnetic valve are connected with the air outlet ends of the first air inlet electromagnetic valve and the second air inlet electromagnetic valve through air paths; the air inlet end of the safety electromagnetic valve is connected with the air outlet ends of the first air inlet electromagnetic valve and the second air inlet electromagnetic valve through an air circuit, and is connected with the air inlet ends of the first air outlet electromagnetic valve and the second air outlet electromagnetic valve; the air outlet end of the safety electromagnetic valve is directly communicated with the atmosphere through an air circuit; a pressure sensor is arranged among the hydraulic retarder, the first air inlet electromagnetic valve, the second air inlet electromagnetic valve, the first air outlet electromagnetic valve and the second air outlet electromagnetic valve; the first air inlet electromagnetic valve, the second air inlet electromagnetic valve, the first air outlet electromagnetic valve, the second air outlet electromagnetic valve and the control handle are electrically connected with the hydrodynamic retarder controller through connectors in a wiring harness manner; the air pressure sensor is electrically connected with the hydrodynamic retarder controller in a wiring harness mode.
A method for controlling a hydraulic retarder control device based on a switch-type electromagnetic valve comprises the following control steps:
1. firstly, a hydrodynamic retarder controller receives a gear signal output by a control handle.
2. The hydraulic retarder controller compares and judges the feedback signal of the received air pressure sensor with the output gear signal of the control handle, and is divided into two signals for control: firstly, the working air pressure in the working cavity of the hydraulic retarder needs to raise signals, and secondly, the working air pressure in the working cavity of the hydraulic retarder needs to lower signals.
A1, when the air pressure in the working cavity of the hydraulic retarder needs to be increased, the safety electromagnetic valve is controlled to be closed, and the first exhaust electromagnetic valve and the second exhaust electromagnetic valve are controlled to be closed.
A2, judging whether the actual air pressure value is lower than the target air pressure value.
A3, if the actual air pressure value is lower than the target air pressure value, controlling the first air inlet electromagnetic valve and the second air inlet electromagnetic valve to be opened simultaneously, and inputting compressed air into the working cavity of the hydraulic retarder through the two air inlet electromagnetic valves; otherwise, enter step A4.
A4, judging whether the actual air pressure value is close to the target air pressure value.
A5, if the actual air pressure value is judged to be close to the target air pressure value, the first air inlet electromagnetic valve is controlled to be closed, the second air inlet electromagnetic valve is controlled to be opened, compressed air is input into the working cavity of the hydraulic retarder through the second air inlet electromagnetic valve, and then the second air inlet electromagnetic valve returns to the step II; otherwise, directly returning to the step A3 and entering the step A6.
A6, if the actual air pressure value reaches the target air pressure value, controlling the first air inlet electromagnetic valve and the second air inlet electromagnetic valve to be closed simultaneously; otherwise, directly returning to the step A3.
B1, when the air pressure in the working cavity of the hydraulic retarder needs to be reduced, the safety electromagnetic valve is controlled to be closed, and the first air inlet electromagnetic valve and the second air inlet electromagnetic valve are controlled to be closed.
B2, judging whether the actual air pressure value is higher than the target air pressure value.
B3, if the actual air pressure value is higher than the target air pressure value, controlling the first air exhaust electromagnetic valve and the second air exhaust electromagnetic valve to be simultaneously opened, and discharging compressed air from the working cavity of the hydraulic retarder through the two air exhaust electromagnetic valves; otherwise, enter step B4.
And B4, judging whether the actual air pressure value is close to the target air pressure value.
If the actual air pressure value is close to the target air pressure value, the first air exhaust electromagnetic valve is controlled to be closed, the second air exhaust electromagnetic valve is controlled to be opened, compressed air is discharged from the working cavity of the hydraulic retarder through the second air exhaust electromagnetic valve, and then the second air exhaust electromagnetic valve returns to the step two again; otherwise, directly returning to the step B3, and simultaneously entering the step B6.
B6, if the actual air pressure value is judged to reach the target air pressure value, the first air exhaust electromagnetic valve and the second air exhaust electromagnetic valve are controlled to be closed simultaneously; otherwise, directly returning to the step B3.
The beneficial effects of the invention are as follows: the invention has the advantages of quick response, low cost, high control precision, long service life, safety, stability and reliability.
The hydraulic retarder is different from the scheme of controlling the hydraulic retarder through a proportional electromagnetic valve and other switch electromagnetic valves in the market, wherein the switch electromagnetic valves control the air pressure of compressed air input into the hydraulic retarder through 4 high-frequency normally closed electromagnetic valves, wherein the two electromagnetic valves have larger drift diameters for improving the air pressure change rate, and the other two electromagnetic valves have smaller drift diameters for more accurately controlling the air pressure, so that the control precision is improved, the action frequency of the electromagnetic valves is reduced, and the service life of the electromagnetic valves is further prolonged; in order to improve safety and stability, the leakage of the air inlet electromagnetic valve is avoided under the non-working state of the hydraulic retarder, so that the braking torque is generated by air pressure in the working cavity of the hydraulic retarder, and the leaked compressed air can be discharged to the atmosphere through the normally-open safety electromagnetic valve, so that the problems are avoided.
Drawings
FIG. 1 is a schematic diagram of the connection principle of a hydraulic retarder control device based on a switching type electromagnetic valve according to the present invention;
fig. 2 is a flow chart of the control method of the present invention.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings: it is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
The invention firstly provides a hydraulic retarder control device based on a switch-type electromagnetic valve, which is used for solving the problems of high control cost, poor vibration resistance, easiness in influence by environmental factors and the like of compressed gas in the hydraulic retarder.
As shown in fig. 1, the hydraulic retarder control device based on the switch-type electromagnetic valve comprises a first air inlet electromagnetic valve 1, a second air inlet electromagnetic valve 2, a first air outlet electromagnetic valve 3, a second air outlet electromagnetic valve 4, a safety electromagnetic valve 5, an air pressure sensor 6 and a control handle 9; the air inlet ends of the first air inlet electromagnetic valve 1 and the second air inlet electromagnetic valve 2 are connected with an air inlet source 10, and the air outlet ends of the first air inlet electromagnetic valve and the second air inlet electromagnetic valve are connected with the hydraulic retarder 7 to provide compressed air for the hydraulic retarder 7; the air inlet ends of the first air inlet electromagnetic valve 1 and the second air inlet electromagnetic valve 2 are connected with the air inlet ends of the first air outlet electromagnetic valve 3 and the second air outlet electromagnetic valve 4 through air paths; the air inlet end of the safety electromagnetic valve 5 is connected with the air outlet ends of the first air inlet electromagnetic valve 1 and the second air inlet electromagnetic valve 2 through an air path, and is connected with the air inlet ends of the first air outlet electromagnetic valve 3 and the second air outlet electromagnetic valve 4; the air outlet end of the safety electromagnetic valve 5 is directly communicated with the atmosphere through an air circuit; a pressure sensor 6 is arranged between the hydrodynamic retarder 7 and the first air inlet electromagnetic valve 1, the second air inlet electromagnetic valve 2, the first air outlet electromagnetic valve 3 and the second air outlet electromagnetic valve 4; the first air inlet electromagnetic valve 1, the second air inlet electromagnetic valve 2, the first air outlet electromagnetic valve 3, the second air outlet electromagnetic valve 4 and the control handle 9 are electrically connected with the hydrodynamic retarder controller 8 through connectors in a wiring harness manner; the air pressure sensor 6 is electrically connected with the hydrodynamic retarder controller 8 by a wire harness.
As shown in fig. 2, the invention adopts a method for controlling the hydraulic retarder control device based on a switch-type electromagnetic valve, and the control steps are as follows:
1. first the hydrodynamic retarder controller 8 receives the control handle 9 output gear signal.
2. The hydrodynamic retarder controller 8 compares and judges the feedback signal of the received air pressure sensor with the gear signal output by the control handle 9, and divides the feedback signal into two signals for control: firstly, the working air pressure in the working cavity of the hydraulic retarder 7 needs to raise signals, and secondly, the working air pressure in the working cavity of the hydraulic retarder 7 needs to lower signals.
A1, when the air pressure in the working cavity of the hydraulic retarder 7 needs to be increased, the safety electromagnetic valve 5 is controlled to be closed, and the first exhaust electromagnetic valve 3 and the second exhaust electromagnetic valve 4 are controlled to be closed.
A2, judging whether the actual air pressure value is lower than the target air pressure value.
A3, if the actual air pressure value is lower than the target air pressure value, controlling the first air inlet electromagnetic valve 1 and the second air inlet electromagnetic valve 2 to be opened simultaneously, and inputting compressed air into a working cavity of the hydraulic retarder 7 through the two air inlet electromagnetic valves; otherwise, enter step A4.
A4, judging whether the actual air pressure value is close to the target air pressure value.
A5, if the actual air pressure value is judged to be close to the target air pressure value, the first air inlet electromagnetic valve 1 is controlled to be closed, the second air inlet electromagnetic valve 2 is controlled to be opened, compressed air is input into the working cavity of the hydraulic retarder 7 through the second air inlet electromagnetic valve 2, and then the second step is returned again; otherwise, directly returning to the step A3 and entering the step A6.
A6, if the actual air pressure value reaches the target air pressure value, controlling the first air inlet electromagnetic valve 1 and the second air inlet electromagnetic valve 2 to be closed simultaneously; otherwise, directly returning to the step A3.
And B1, when the air pressure in the working cavity of the hydraulic retarder 7 needs to be reduced, controlling the safety electromagnetic valve 5 to be closed, and controlling the first air inlet electromagnetic valve 1 and the second air inlet electromagnetic valve 2 to be closed.
B2, judging whether the actual air pressure value is higher than the target air pressure value.
B3, if the actual air pressure value is higher than the target air pressure value, controlling the first air exhaust electromagnetic valve 3 and the second air exhaust electromagnetic valve 4 to be simultaneously opened, and discharging compressed air from the working cavity of the hydraulic retarder 7 through the two air exhaust electromagnetic valves; otherwise, enter step B4.
And B4, judging whether the actual air pressure value is close to the target air pressure value.
If the actual air pressure value is judged to be close to the target air pressure value, the first air exhaust electromagnetic valve 3 is controlled to be closed, the second air exhaust electromagnetic valve 4 is controlled to be opened, compressed air is discharged from the working cavity of the hydraulic retarder 7 through the second air exhaust electromagnetic valve 4, and then the second step is returned again; otherwise, directly returning to the step B3, and simultaneously entering the step B6.
B6, if the actual air pressure value is judged to reach the target air pressure value, the first air discharge electromagnetic valve 3 and the second air discharge electromagnetic valve 4 are controlled to be closed simultaneously; otherwise, directly returning to the step B3.
The invention relates to a hydraulic retarder control device based on a switch type electromagnetic valve, which adopts the working principle that: compressed gas from the intake air source 10 reaches the first intake solenoid valve 1 and the second intake solenoid valve 2, and waits for a control instruction; the sensitive head of the air pressure sensor 6 is arranged at the compressed air inlet of the hydraulic retarder 7 and is used for detecting the inlet air pressure of the hydraulic retarder 7, when the air pressure in the working cavity of the hydraulic retarder 7 is controlled to be increased, the safety electromagnetic valve 5 is closed, the first air discharge electromagnetic valve 3 and the second air discharge electromagnetic valve 4 are closed, air pressure signals are fed back to the hydraulic retarder controller 8, and when the actual air pressure value is lower than the target air pressure value by 90%, the first air inlet electromagnetic valve 1 and the second air inlet electromagnetic valve 2 are simultaneously opened, so that the air pressure boosting rate in the working cavity of the hydraulic retarder 7 is increased; when the actual air pressure value reaches 90% of the target air pressure value, in order to improve the control precision and reduce the air pressure fluctuation, the first air inlet electromagnetic valve 1 is closed by Proportional Integral Derivative (PID) control, and only the second air inlet electromagnetic valve 2 is kept in an open state; when the final air pressure value in the working cavity of the hydraulic retarder 7 reaches the range of +/-5% of the target air pressure value, the hydraulic retarder controller 8 controls the second air inlet electromagnetic valve 2 to be closed.
When the air pressure in the working cavity of the hydraulic retarder 7 needs to be controlled to be reduced, the safety electromagnetic valve 5 is closed, the first air inlet electromagnetic valve 1 and the second air inlet electromagnetic valve 2 are closed, the air pressure sensor 6 feeds air pressure signals back to the hydraulic retarder slow controller 8, and when the actual air pressure value is higher than the target air pressure value by 110%, the first air outlet electromagnetic valve 3 and the second air outlet electromagnetic valve 4 are simultaneously opened in order to increase the air pressure reducing rate in the working cavity of the hydraulic retarder 7; when the actual air pressure value reaches 110% of the target air pressure value, in order to improve the control precision and reduce the air pressure fluctuation, the first exhaust electromagnetic valve 3 is closed by Proportional Integral Derivative (PID) control, and only the second exhaust electromagnetic valve 4 is kept in an open state; when the final air pressure value in the working cavity of the hydraulic retarder 7 reaches within +/-5% of the target air pressure value, the hydraulic retarder slow controller 8 controls the exhaust electromagnetic valve 4 to be closed.
In this embodiment, the hydraulic retarder controller calculates the target pressure of the hydraulic retarder according to the gear instruction provided by the control handle, and then the target pressure is achieved by adjusting the opening and closing time of the air inlet electromagnetic valve and the air outlet electromagnetic valve, and meanwhile, the discharge of compressed gas can be further controlled, and the initial state of the air pressure in the working cavity of the hydraulic retarder is recovered. In this embodiment, the hydraulic retarder 3500 controller may be selected, and other hydraulic retarder controllers may be selected to control the device.
The first air inlet electromagnetic valve 1, the second air inlet electromagnetic valve 2, the first air outlet electromagnetic valve 3 and the second air outlet electromagnetic valve 4 of the embodiment are all switch-type high-frequency normally closed electromagnetic valves; the safety solenoid valve 5 is a general normally open solenoid valve. Wherein, the effective latus rectum of first air inlet solenoid valve 1 is 5mm, and the effective latus rectum of second air inlet solenoid valve 2 is 3mm, and the effective latus rectum of first exhaust solenoid valve 3 is 5mm, and the effective latus rectum of second exhaust solenoid valve 4 is 3mm. The small-caliber air inlet electromagnetic valve and the small-caliber air outlet electromagnetic valve can more accurately control the air pressure in the working cavity of the hydraulic retarder so as to realize the accurate control of the pressure of compressed air, prevent larger fluctuation in air pressure control and reduce the frequent switching action of the electromagnetic valve. Compared with the scheme of adopting a proportional electromagnetic valve and other switch-type electromagnetic valves in the prior art, the invention has the advantages of quick response, low cost, high control precision, long service life, safety, stability and reliability.
Claims (4)
1. A hydraulic retarder control device based on a switch-type electromagnetic valve is characterized in that: the device comprises a first air inlet electromagnetic valve (1), a second air inlet electromagnetic valve (2), a first air outlet electromagnetic valve (3), a second air outlet electromagnetic valve (4), a safety electromagnetic valve (5), an air pressure sensor (6) and a control handle (9); the air inlet ends of the first air inlet electromagnetic valve (1) and the second air inlet electromagnetic valve (2) are connected with an air inlet source (10), and the air outlet ends of the first air inlet electromagnetic valve and the second air inlet electromagnetic valve are connected with a hydraulic retarder (7) to provide compressed air for the hydraulic retarder (7);
the air inlet ends of the first air inlet electromagnetic valve (1) and the second air inlet electromagnetic valve (2) are connected with the air inlet ends of the first air inlet electromagnetic valve (3) and the second air inlet electromagnetic valve (4) through air paths;
the air inlet end of the safety electromagnetic valve (5) is connected with the air outlet ends of the first air inlet electromagnetic valve (1) and the second air inlet electromagnetic valve (2) through an air path, and is simultaneously connected with the air inlet ends of the first air outlet electromagnetic valve (3) and the second air outlet electromagnetic valve (4); the air outlet end of the safety electromagnetic valve (5) is directly communicated with the atmosphere through an air circuit;
an air pressure sensor (6) is arranged among the hydraulic retarder (7), the first air inlet electromagnetic valve (1), the second air inlet electromagnetic valve (2), the first air outlet electromagnetic valve (3) and the second air outlet electromagnetic valve (4);
the first air inlet electromagnetic valve (1), the second air inlet electromagnetic valve (2), the first air outlet electromagnetic valve (3), the second air outlet electromagnetic valve (4) and the control handle (9) are electrically connected with the hydrodynamic retarder controller (8) through connectors in a wiring harness manner; the air pressure sensor (6) is electrically connected with the hydrodynamic retarder controller (8) through a wire harness.
2. A hydraulic retarder control device based on a switching solenoid valve according to claim 1, characterized in that: the first air inlet electromagnetic valve (1), the second air inlet electromagnetic valve (2), the first air outlet electromagnetic valve (3) and the second air outlet electromagnetic valve (4) are all on-off high-frequency normally closed electromagnetic valves; the safety electromagnetic valve (5) is a general normally open electromagnetic valve.
3. A hydraulic retarder control device based on a switching solenoid valve according to claim 2, characterized in that: the effective drift diameter of the first air inlet electromagnetic valve (1) is 5mm, the effective drift diameter of the second air inlet electromagnetic valve (2) is 3mm, the effective drift diameter of the first air outlet electromagnetic valve (3) is 5mm, and the effective drift diameter of the second air outlet electromagnetic valve (4) is 3mm.
4. A method of controlling a hydraulic retarder control device based on a switching solenoid valve according to any of claims 1-3, characterized in that: the control steps are as follows:
1. firstly, a hydrodynamic retarder controller (8) receives a gear signal output by a control handle (9);
2. the hydraulic retarder controller (8) compares and judges the received air pressure sensor feedback signal with the gear signal output by the control handle (9), and is divided into two signals for control: firstly, the working air pressure in the working cavity of the hydraulic retarder (7) needs to raise signals, and secondly, the working air pressure in the working cavity of the hydraulic retarder (7) needs to lower signals;
a1, when the air pressure in a working cavity of the hydraulic retarder (7) needs to be increased, controlling the safety electromagnetic valve (5) to be closed, and controlling the first exhaust electromagnetic valve (3) and the second exhaust electromagnetic valve (4) to be closed;
a2, judging whether the actual air pressure value is lower than the target air pressure value or not;
a3, if the actual air pressure value is lower than the target air pressure value, controlling the first air inlet electromagnetic valve (1) and the second air inlet electromagnetic valve (2) to be opened simultaneously, and inputting compressed air into a working cavity of the hydraulic retarder (7) through the two air inlet electromagnetic valves; otherwise, enter step A4;
a4, judging whether the actual air pressure value is close to the target air pressure value or not;
a5, if the actual air pressure value is judged to be close to the target air pressure value, the first air inlet electromagnetic valve (1) is controlled to be closed, the second air inlet electromagnetic valve (2) is controlled to be opened, compressed air is input into a working cavity of the hydraulic retarder (7) through the second air inlet electromagnetic valve (2), and then the second air inlet electromagnetic valve returns to the step II; otherwise, directly returning to the step A3, and entering the step A6;
a6, if the actual air pressure value reaches the target air pressure value, controlling the first air inlet electromagnetic valve (1) and the second air inlet electromagnetic valve (2) to be closed simultaneously; otherwise, directly returning to the step A3;
b1, when the air pressure in the working cavity of the hydraulic retarder (7) needs to be reduced, controlling the safety electromagnetic valve (5) to be closed, and controlling the first air inlet electromagnetic valve (1) and the second air inlet electromagnetic valve (2) to be closed;
b2, judging whether the actual air pressure value is higher than the target air pressure value or not;
b3, if the actual air pressure value is higher than the target air pressure value, controlling the first air exhaust electromagnetic valve (3) and the second air exhaust electromagnetic valve (4) to be simultaneously opened, and discharging compressed air from a working cavity of the hydraulic retarder (7) through the two air exhaust electromagnetic valves; otherwise, enter step B4;
b4, judging whether the actual air pressure value is close to the target air pressure value or not;
if the actual air pressure value is close to the target air pressure value, the first air exhaust electromagnetic valve (3) is controlled to be closed, the second air exhaust electromagnetic valve (4) is controlled to be opened, compressed air is discharged from the working cavity of the hydraulic retarder (7) through the second air exhaust electromagnetic valve (4), and then the second air exhaust electromagnetic valve returns to the step II; otherwise, directly returning to the step B3, and entering the step B6;
b6, if the actual air pressure value is judged to reach the target air pressure value, the first air exhaust electromagnetic valve (3) and the second air exhaust electromagnetic valve (4) are controlled to be closed simultaneously; otherwise, directly returning to the step B3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310745411.2A CN116588052A (en) | 2023-06-25 | 2023-06-25 | Hydraulic retarder control device and control method based on switch-type electromagnetic valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310745411.2A CN116588052A (en) | 2023-06-25 | 2023-06-25 | Hydraulic retarder control device and control method based on switch-type electromagnetic valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116588052A true CN116588052A (en) | 2023-08-15 |
Family
ID=87611815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310745411.2A Pending CN116588052A (en) | 2023-06-25 | 2023-06-25 | Hydraulic retarder control device and control method based on switch-type electromagnetic valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116588052A (en) |
-
2023
- 2023-06-25 CN CN202310745411.2A patent/CN116588052A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102060009B (en) | Braking system with electronic braking assisting function | |
| US20060209486A1 (en) | Method for determining the magnetic flux in at least one solenoid valve which can be electrically driven via a driver stage | |
| JP6926323B2 (en) | Electric-aerodynamic parking brake controller and vehicle braking equipment | |
| KR101871092B1 (en) | Method and device for operating a pressure reservoir, in particular for common rail injection systems in automobile engineering | |
| US6171066B1 (en) | Automatic pneumatic pressure control apparatus and method of controlling same | |
| WO2020043577A1 (en) | Haptic feedback for decoupled brake system | |
| JPH10236292A (en) | Control method and device for pressure in at least single wheel brake | |
| KR20070046901A (en) | Method and device for controlling or regulating the boost pressure of an internal combustion engine comprising a compressor | |
| KR100417314B1 (en) | Method and apparatus for measuring pressure value | |
| KR20090116799A (en) | Method for the calibration of analogized valves in a pressure control device | |
| KR19980702338A (en) | Hydraulic vehicle power brake with at least one valve that can be electrically controlled | |
| CN201941755U (en) | Braking system with electronically-assisted braking function | |
| JPH0858566A (en) | Method and device for controlling pressure | |
| KR20150052142A (en) | Switchover method for a solenoid valve operated in analogized form, electrohydraulic brake system, and use of the electrohydraulic brake system | |
| CN116588052A (en) | Hydraulic retarder control device and control method based on switch-type electromagnetic valve | |
| US20060260702A1 (en) | Fluid Regulation Control | |
| CN108474310A (en) | Method and apparatus for manipulating solenoid valve | |
| US8789897B2 (en) | Method for dimensioning the admission pressure at an analogized electromagnetically actuated hydraulic valve | |
| CN107606284A (en) | The regulating valve for controlling to adjust the method for valve using PWM and being controlled based on PWM | |
| JP3247282B2 (en) | Air pressure regulator | |
| JP6493149B2 (en) | Solenoid valve control method | |
| JPH03219180A (en) | Magnet valve with exciting current controller | |
| CN100557395C (en) | Ultra-high pressure air-actuated clearance-dimension-pressure characteristic test apparatus | |
| CN207989867U (en) | A kind of balance type structure pressure regulator | |
| KR20030034335A (en) | Method for reducing valve' noise in anti-lock brake system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |