CN115923739A - Drive-by-wire braking system based on commercial car ABS framework - Google Patents
Drive-by-wire braking system based on commercial car ABS framework Download PDFInfo
- Publication number
- CN115923739A CN115923739A CN202211594279.1A CN202211594279A CN115923739A CN 115923739 A CN115923739 A CN 115923739A CN 202211594279 A CN202211594279 A CN 202211594279A CN 115923739 A CN115923739 A CN 115923739A
- Authority
- CN
- China
- Prior art keywords
- valve
- air
- brake
- relay valve
- iaeb
- 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
- 230000008859 change Effects 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Images
Landscapes
- Regulating Braking Force (AREA)
Abstract
The invention discloses a brake-by-wire system based on an ABS (anti-lock brake system) framework of a commercial vehicle, which comprises two IAEB (integrated automatic brake System) electromagnetic relay valves, a central control unit ECU (electronic control unit), a master brake valve, a brake air chamber, a hand brake, a parking relay valve, an ABS (anti-lock brake system) valve, a wheel speed sensor, a storage battery, a compressor and a dryer, wherein the IAEB electromagnetic relay valves are arranged on the master brake valve; a pressure sensor is arranged in the IAEB electromagnetic relay valve and used for collecting an air pressure value in the IAEB electromagnetic relay valve; and the central control unit calculates whether the pressure value of the valve body can meet the requirement of automobile braking, and controls the IAEB electromagnetic relay valve to dynamically pressurize or decompress, so that the purpose of outputting gas with any air pressure value for braking is realized. According to the system, a pressure sensor arranged in the IAEB electromagnetic relay valve is used for acquiring an air pressure value signal in the IABS valve, and the ECU is used for calculating whether the valve body pressure value can meet the automobile braking, so that dynamic pressure increasing and reducing adjustment is carried out, and the automobile braking is safely and quickly realized.
Description
Technical Field
The invention belongs to the technical field of motor vehicle braking systems, and particularly relates to a brake-by-wire system based on an ABS (anti-lock braking system) framework of a commercial vehicle.
Background
The commercial vehicle is used as a main force of road transportation, has the characteristics of large carrying capacity and high transportation efficiency, and simultaneously, the braking of the commercial vehicle under an emergency condition for ensuring the carrying capacity and the transportation efficiency in the transportation process becomes a difficult problem. In recent years, intelligent driving and intelligent auxiliary driving become a great trend of the development of the automobile industry in a new era, and relevant researches show that the braking efficiency of a commercial vehicle is effectively improved by introducing an intelligent safety braking scheme into the commercial vehicle, so that traffic accidents are effectively reduced. Therefore, the intelligent safety braking scheme of the commercial vehicle not only can effectively improve the braking performance of the commercial vehicle, but also is expected to lead intelligent driving application and popularization. The intelligent safety braking scheme cannot be supported by a drive-by-wire technology, wherein the drive-by-wire technology is a technology for transmitting a driving signal of a driver to an actuating mechanism in an electric signal mode by using a sensor technology. However, the existing brake-by-wire scheme is expensive, not suitable for large-scale installation and not suitable for intelligent driving.
Disclosure of Invention
The invention mainly aims to overcome the defects in the prior art and provides a brake-by-wire system based on an ABS (anti-lock braking system) framework of a commercial vehicle.
In order to achieve the purpose, the invention adopts the following technical scheme:
a brake-by-wire system based on an ABS (anti-lock braking system) framework of a commercial vehicle comprises two IAEB (integrated automatic brake system) electromagnetic relay valves, a central control unit ECU (electronic control unit), a brake main valve, a brake air chamber, a hand brake, a parking relay valve, an ABS (anti-lock brake system) valve, a wheel speed sensor, a storage battery, a compressor and a dryer;
a pressure sensor is arranged in the IAEB electromagnetic relay valve and used for collecting an air pressure value in the IAEB electromagnetic relay valve;
and the central control unit calculates whether the pressure value of the valve body can meet the requirement of automobile braking, and controls the IAEB electromagnetic relay valve to dynamically pressurize or decompress, so that the purpose of outputting gas with any air pressure value for braking is realized.
Further, the compressor is connected with the dryer, the outlet end of the dryer is respectively connected with three air storage tanks, namely a first air storage tank, a second air storage tank and a third air storage tank, wherein the outlet end of the first air storage tank is respectively communicated with the inlet end of the hand brake and the inlet end of the parking relay valve; the outlet end of the second air storage tank is respectively communicated with the inlet end of the brake master valve and the air inlet of the IAEB electromagnetic relay valve at the rear wheel; the outlet end of the third air storage tank is respectively communicated with the inlet end of the brake master valve and the air inlet of the IAEB electromagnetic relay valve at the front wheel;
the outlet end of the parking relay valve is connected with two brake air chambers which are respectively arranged on two rear wheels;
the storage battery is electrically connected with the ECU, and the ECU is respectively electrically connected with the main brake valve, the ABS valve, the IAEB electromagnetic relay valve and the wheel speed sensor;
the four wheel speed sensors are respectively arranged on the four wheels;
the opening of the master cylinder valve is determined by the pedal stroke on the brake pedal controlled by the driver.
Furthermore, the IAEB electromagnetic relay valve comprises two electromagnetic valves, a pressure sensor, a two-way check valve and a relay valve, wherein the two electromagnetic valves are a normally closed air inlet electromagnetic valve and a normally open air outlet electromagnetic valve which are connected with the air tank respectively;
IAEB electromagnetism relay valve is provided with 5 gas ports, and 5 gas ports are respectively:
1 air inlet connected with the dryer, two air outlets connected with the ABS valve, 1 exhaust outlet connected with the atmosphere and 1 control air port connected with the brake master valve;
the front end of the air inlet is connected with the dryer, the rear end of the air inlet is divided into two paths, one path of the air inlet is connected with the air inlet electromagnetic valve, and the other path of the air inlet is connected with the air inlet end of the relay valve; the two air outlets are respectively connected with an ABS valve on the wheel; the exhaust port is used for exhausting air, and the exhaust is carried out through the port when the exhaust is needed after the braking is finished; the front end of the control air port is connected with a master brake valve, the rear end of the control air port is connected with the left end of a two-way check valve, and the air outlet end of an air inlet electromagnetic valve and the air inlet end of an air outlet electromagnetic valve are simultaneously connected with the right end of the two-way check valve; the pressure sensor is arranged at the air outlet end of the relay valve.
Furthermore, the opening and closing and the opening of the two electromagnetic valves are determined by road surface information collected by the central control unit ECU, so that whether the brake gas needs to be pressurized or depressurized is determined, and further, the purpose of outputting the gas with any air pressure value for braking is achieved.
And the parking relay valve is used for controlling the braking air quantity passing through the valve body so as to park and brake the vehicle.
Furthermore, each wheel of the ABS valve is provided with one ABS valve, and when the automobile brakes, the braking force of the brake is automatically controlled, so that the wheels are not locked.
Further, the brake-by-wire system includes four control modes, which are a driver working mode, an external request mode, a driver/external request switching mode, and a parking brake mode, respectively;
the specific work flow of the driver mode is as follows:
the air quantity entering the air outlet at the moment meets the air pressure value required by a driver to brake by combining an ABS valve on a wheel, so that the vehicle is prevented from being locked, and the vehicle is braked and decelerated.
Further, the specific work flow of the external request mode is as follows:
the central control unit combines a wheel speed sensor signal and a pressure sensor according to information collected by a road surface, and compares the collected information with set information, so that an air inlet electromagnetic valve inside the IAEB electromagnetic relay valve is controlled to be opened, an exhaust electromagnetic valve is closed, brake air entering the IAEB electromagnetic relay valve is pressurized, the pressurized air pushes an inner ball body of the two-way one-way valve to the left, the relay valve is pushed to the downward direction, a pipeline from an air inlet to an air outlet is opened, the brake air compressed by a compressor enters the air outlet from the air inlet, and when the air pressure value in the air outlet is larger than the air pressure value of a brake main valve flowing to the relay valve, the relay valve is pushed to the upward direction, the air quantity entering the air outlet at the moment meets the air pressure value required to brake by an external request, and the central control unit is combined with an ABS (anti-lock brake system) valve on a wheel to prevent the vehicle from being locked, so that the vehicle brakes and decelerates.
Further, the driver/external request switching mode includes two cases:
in the first situation, a driver steps on a brake pedal to control the change of the opening degree of a main brake valve;
in the second situation, the central control unit compares the acquired information with the set information by combining the signal of the wheel speed sensor and the pressure sensor according to the information acquired by the road surface, so that an air inlet electromagnetic valve in the IAEB electromagnetic relay valve is controlled to be opened, an air outlet electromagnetic valve is controlled to be closed, and brake air is pressurized;
the brake air that two kinds of condition produced will converge two-way check valve both sides, two-way check valve gets the atmospheric pressure that the atmospheric pressure value is bigger among them and passes through, the pipeline from the air inlet to the gas outlet is dredged, the brake air through compressor compression gets into the gas outlet from the air inlet, when the atmospheric pressure value in the gas outlet is greater than the brake master valve and flows to the relay valve atmospheric pressure value, promote the relay valve upwards, the atmospheric pressure value that the income atmospheric pressure in the gas outlet has satisfied driver/external request needs the brake at this moment, combine the ABS valve on the wheel, prevent that the vehicle from locking, the vehicle slows down that brakes.
Further, the specific working process of the parking brake mode is as follows:
when parking braking is carried out, the main braking valve and the IAEB electromagnetic relay valve do not work, two electromagnetic valves in the IAEB electromagnetic relay valve are not electrified, a driver pulls up a hand brake, and parking braking is carried out through the parking relay valve by brake air.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. according to the invention, a pressure sensor arranged in the IAEB electromagnetic relay valve is used for acquiring an air pressure value signal in the IABS electromagnetic relay valve, and the ECU is used for calculating whether the valve body pressure value can meet the automobile braking requirement, so that dynamic pressure increasing and reducing regulation is carried out.
2. Through the inside normally closed air inlet solenoid valve that sets up of IAEB electromagnetism relay valve, the exhaust solenoid valve that normally opens, can add the decompression according to ECU's control to control the braking force size, simultaneously through pressure sensor, the size of real time monitoring valve internal gas pressure value realizes closed-loop control.
3. The brake-by-wire system is based on an ABS (anti-lock brake system) framework of a commercial vehicle, not only has the functions of ABS, ASR (anti-slip regulation) and the like in the ABS system, but also has the characteristic that the high-integration IAEB electromagnetic relay valve can output any air pressure value in the function, monitors the air pressure value in the valve in real time and realizes closed-loop control; the brake-by-wire system can meet the automobile braking requirement of future intelligent driving, can safely and quickly realize vehicle braking, and further improves the safety performance of the vehicle.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a block diagram of an IAEB electromagnetic relay valve;
FIG. 3 is a schematic view of the interior of an IAEB electromagnetic relay valve in driver mode;
FIG. 4 is a schematic diagram of the interior of an IAEB solenoid relay valve in an external request mode and a driver/external request switching mode;
the reference numbers illustrate: 1-a dryer; 2-a compressor; 3-a storage battery; 4-a central control unit; 5-master braking valve; 6-wheel speed sensor; 7-ABS valve; 8-IAEB electromagnetic relay valve; 9-a parking relay valve; 10-hand brake; 11-an air inlet electromagnetic valve; 12-an exhaust solenoid valve; 13-a pressure sensor; 14-a relay valve; 15-two-way check valve; 16-a brake chamber; a-an air inlet; b-an air outlet; c-an exhaust port; d-control the air port.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited thereto.
Examples
As shown in fig. 1, the invention provides a brake-by-wire system based on a commercial vehicle ABS architecture, which includes two IAEB electromagnetic relay valves 8, a central control unit 4 (ECU), a master brake valve 5, two brake chambers 16, a hand brake 10, a parking relay valve 9, four ABS valves 7, four wheel speed sensors 6, a storage battery 3, a compressor 2 and a dryer 1;
a pressure sensor is arranged in the IAEB electromagnetic relay valve and used for collecting an air pressure value in the IAEB electromagnetic relay valve;
and the central control unit calculates whether the pressure value of the valve body can meet the requirement of automobile braking, and controls the IAEB electromagnetic relay valve to dynamically pressurize or decompress, so that the purpose of outputting gas with any air pressure value for braking is realized.
And the parking relay valve is used for controlling the braking air quantity passing through the valve body so as to perform parking braking on the vehicle.
The ABS valve is arranged on each wheel, and when the automobile brakes, the braking force of the brake is automatically controlled, so that the wheels are not locked.
The compressor is connected with the dryer, the outlet end of the dryer is respectively connected with three air storage tanks, namely a first air storage tank, a second air storage tank and a third air storage tank, wherein the outlet end of the first air storage tank is respectively communicated with the inlet end of the hand brake and the inlet end of the parking relay valve; the outlet end of the second air storage tank is respectively communicated with the inlet end of the brake master valve and the air inlet of the IAEB electromagnetic relay valve at the rear wheel; the outlet end of the third air storage tank is respectively communicated with the inlet end of the main brake valve and the air inlet of the IAEB electromagnetic relay valve at the front wheel;
the outlet end of the parking relay valve is connected with brake chambers, and the two brake chambers are respectively arranged on the two rear wheels;
the storage battery is electrically connected with the ECU, and the ECU is respectively and electrically connected with the main brake valve, the ABS valve, the IAEB electromagnetic relay valve and the wheel speed sensor;
the wheel speed sensors are respectively arranged on the four wheels;
the opening of the master cylinder valve is determined by the pedal stroke on the brake pedal controlled by the driver.
In this embodiment, the IAEB electromagnetic relay valve specifically includes two electromagnetic valves, a pressure sensor 13, a two-way check valve 15 and a relay valve 14; the two electromagnetic valves are respectively a normally closed air inlet electromagnetic valve 11 and a normally open air outlet electromagnetic valve 12 of the air receiving tank, and the opening and closing and the opening of the two electromagnetic valves are determined by road information acquired by the central control unit, so that whether the brake air needs to be pressurized or depressurized is determined, and then, the purpose of outputting any air pressure value to brake is achieved.
As shown in fig. 2, the IAEB electromagnetic relay valve is provided with 5 air ports, and the 5 air ports are respectively:
1 air inlet A that is connected with the desicator, two gas outlets B that are connected with the ABS valve, 1 exhaust port C that links to each other with the atmosphere and 1 control gas port D that is connected with the master brake valve.
As shown in fig. 2, the front end of the air inlet is connected with the dryer, the rear end is divided into two paths, one path is connected with the air inlet electromagnetic valve, and the other path is connected with the air inlet end of the relay valve; the two air outlets are respectively connected with an ABS valve on the wheel; the exhaust port is used for exhausting air, and the exhaust is carried out through the port when the exhaust is needed after the braking is finished; the front end of the control air port is connected with a master brake valve, the rear end of the control air port is connected with the left end of a two-way check valve, and the air outlet end of an air inlet electromagnetic valve and the air inlet end of an air outlet electromagnetic valve are simultaneously connected with the right end of the two-way check valve; the pressure sensor is arranged at the air outlet end of the relay valve.
In the present embodiment, the brake-by-wire system includes four control modes, which are a driver operating mode, an external request mode, a driver/external request switching mode, and a parking brake mode, respectively;
as shown in fig. 3, the specific work flow of the driver mode is as follows:
the air quantity entering the air outlet at the moment meets the air pressure value required by a driver to brake by combining an ABS valve on a wheel, so that the vehicle is prevented from being locked, and the vehicle is braked and decelerated.
As shown in fig. 4, the specific work flow of the external request mode is as follows:
the central control unit is used for comparing the acquired information with set information according to information acquired by a road surface by combining a wheel speed sensor signal and a pressure sensor, so that an air inlet electromagnetic valve inside the IAEB electromagnetic relay valve is controlled to be opened (opening time is controlled, air inflow is controlled, air pressure at the upper end of the relay valve is controlled), an exhaust electromagnetic valve is closed, brake air entering the IAEB electromagnetic relay valve is pressurized, the pressurized air pushes a ball body inside a double-way one-way valve to the left, the relay valve is pushed to the downward direction, a pipeline from an air inlet to an air outlet is opened, the brake air compressed by a compressor enters the air outlet from the air inlet, when the air pressure value in the air outlet is larger than the air pressure value from a main brake valve to the relay valve, the relay valve is pushed to the upward direction, the air pressure value entering the air outlet meets the requirement of braking by the outside, the ABS valve on a wheel is combined, locking of a vehicle is prevented, and the vehicle is braked and decelerated.
As shown in fig. 4, the driver/external request switching mode includes two cases:
in the first situation, a driver steps on a brake pedal to control the change of the opening degree of a brake master valve;
the central control unit compares the acquired information with the set information according to the information acquired by the road surface by combining a wheel speed sensor signal and a pressure sensor, so that an air inlet electromagnetic valve in the IAEB electromagnetic relay valve is controlled to be opened, an air outlet electromagnetic valve is controlled to be closed, and brake air is pressurized;
the brake air generated in two conditions is converged at two sides of the two-way one-way valve, the air pressure with the larger air pressure value in the two-way one-way valve is used for passing through the two-way one-way valve, so that the relay valve is pushed downwards, a pipeline from the air inlet to the air outlet is communicated, the brake air compressed by the compressor enters the air outlet from the air inlet, when the air pressure value in the air outlet is larger than the air pressure value of the main brake valve flowing to the relay valve, the relay valve is pushed upwards, the air flow entering the air outlet at the moment meets the air pressure value required to be braked by a driver/external request, the vehicle is prevented from being locked by combining the ABS valves on the wheels, and the vehicle is braked and decelerated.
The specific working process of the parking braking mode comprises the following steps:
when parking braking is carried out, the main braking valve and the IAEB electromagnetic relay valve do not work, two electromagnetic valves in the IAEB electromagnetic relay valve are not electrified, a driver pulls up a hand brake, and parking braking is carried out through the parking relay valve by brake air.
It should also be noted that in this specification, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus 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 apparatus. Without further limitation, an element defined by the phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A brake-by-wire system based on an ABS (anti-lock braking system) framework of a commercial vehicle is characterized by comprising two IAEB (integrated electronic brake System) electromagnetic relay valves, a central control unit ECU (electronic control unit), a master brake valve, a brake air chamber, a hand brake, a parking relay valve, an ABS (anti-lock brake system) valve, a wheel speed sensor, a storage battery, a compressor and a dryer;
a pressure sensor is arranged in the IAEB electromagnetic relay valve and used for collecting an air pressure value in the IAEB electromagnetic relay valve;
and the central control unit calculates whether the pressure value of the valve body can meet the requirement of automobile braking, and controls the IAEB electromagnetic relay valve to dynamically pressurize or decompress, so that the purpose of outputting gas with any air pressure value for braking is realized.
2. The brake-by-wire system based on the ABS architecture of the commercial vehicle as claimed in claim 1, wherein the compressor is connected with the dryer, and the outlet end of the dryer is respectively connected with three air tanks, namely a first air tank, a second air tank and a third air tank, wherein the outlet end of the first air tank is respectively communicated with the inlet end of the hand brake and the inlet end of the parking relay valve; the outlet end of the second air storage tank is respectively communicated with the inlet end of the brake master valve and the air inlet of the IAEB electromagnetic relay valve at the rear wheel; the outlet end of the third air storage tank is respectively communicated with the inlet end of the brake master valve and the air inlet of the IAEB electromagnetic relay valve at the front wheel;
the outlet end of the parking relay valve is connected with two brake air chambers which are respectively arranged on two rear wheels;
the storage battery is electrically connected with the ECU, and the ECU is respectively and electrically connected with the main brake valve, the ABS valve, the IAEB electromagnetic relay valve and the wheel speed sensor;
the four wheel speed sensors are respectively arranged on the four wheels;
the opening of the master cylinder valve is determined by the pedal stroke on the brake pedal controlled by the driver.
3. The brake-by-wire system based on the commercial vehicle ABS framework as claimed in claim 2, characterized in that the IAEB electromagnetic relay valve comprises two electromagnetic valves, a pressure sensor, a two-way check valve and a relay valve, wherein the two electromagnetic valves are respectively a normally closed air inlet electromagnetic valve and a normally open air outlet electromagnetic valve connected with the air tank;
the IAEB electromagnetic relay valve is provided with 5 air ports, and 5 air ports are respectively:
1 air inlet connected with the dryer, two air outlets connected with the ABS valve, 1 exhaust outlet connected with the atmosphere and 1 control air port connected with the brake master valve;
the front end of the air inlet is connected with the dryer, the rear end of the air inlet is divided into two paths, one path of the air inlet is connected with the air inlet electromagnetic valve, and the other path of the air inlet electromagnetic valve is connected with the air inlet end of the relay valve; the two air outlets are respectively connected with an ABS valve on the wheel; the exhaust port is used for exhausting air, and the exhaust is carried out through the port when the exhaust is needed after the braking is finished; the front end of the control air port is connected with a master brake valve, the rear end of the control air port is connected with the left end of a two-way check valve, and the air outlet end of an air inlet electromagnetic valve and the air inlet end of an air outlet electromagnetic valve are simultaneously connected with the right end of the two-way check valve; the pressure sensor is arranged at the air outlet end of the relay valve.
4. The brake-by-wire system based on the ABS architecture of the commercial vehicle as claimed in claim 3, wherein the opening and closing and the opening of the two electromagnetic valves are determined by road information collected by the central control unit ECU, so as to determine whether the brake gas needs to be pressurized or depressurized, and further realize that the gas with any pressure value is output for braking.
5. The brake-by-wire system based on the commercial vehicle ABS architecture as claimed in claim 1, wherein, the parking relay valve is used for controlling the brake air quantity passing through the valve body, thereby performing parking brake on the vehicle.
6. The brake-by-wire system based on the commercial vehicle ABS architecture is characterized in that the ABS valve is arranged on each wheel, and the braking force of the brakes is automatically controlled to prevent the wheels from being locked when the vehicle brakes.
7. The brake-by-wire system based on the ABS architecture of the commercial vehicle is characterized in that the brake-by-wire system comprises four control modes, namely a driver work mode, an external request mode, a driver/external request switching mode and a parking brake mode;
the specific work flow of the driver mode is as follows:
the driver steps on a brake pedal to control the opening change of a master brake valve, a control air port is connected with the master brake valve in an IAEB electromagnetic relay valve, at the moment, two electromagnetic valves are not electrified, air pushes balls in a two-way one-way valve to the right through the control air port to push the relay valve to move downwards, pipelines from the air inlet to two air outlets are communicated, brake air compressed by a compressor enters the air outlets from the air inlet, when the air pressure value in the air outlets is larger than the air pressure value of the master brake valve flowing to the relay valve, the relay valve is pushed to move upwards, the air flow in the air outlets meets the air pressure value required to be braked by the driver, the ABS valve on the wheel is combined, the vehicle is prevented from being locked, and the vehicle is braked and decelerated.
8. The brake-by-wire system based on the ABS architecture of the commercial vehicle as claimed in claim 7, wherein the specific workflow of the external request mode is as follows:
the central control unit combines a wheel speed sensor signal and a pressure sensor according to information collected by a road surface, and compares the collected information with set information, so that an air inlet electromagnetic valve inside the IAEB electromagnetic relay valve is controlled to be opened, an exhaust electromagnetic valve is closed, brake air entering the IAEB electromagnetic relay valve is pressurized, the pressurized air pushes an inner ball body of the two-way one-way valve to the left, the relay valve is pushed to the downward direction, a pipeline from an air inlet to an air outlet is opened, the brake air compressed by a compressor enters the air outlet from the air inlet, and when the air pressure value in the air outlet is larger than the air pressure value of a brake main valve flowing to the relay valve, the relay valve is pushed to the upward direction, the air quantity entering the air outlet at the moment meets the air pressure value required to brake by an external request, and the central control unit is combined with an ABS (anti-lock brake system) valve on a wheel to prevent the vehicle from being locked, so that the vehicle brakes and decelerates.
9. The brake-by-wire system based on the ABS architecture of the commercial vehicle according to claim 7, characterized in that the driver/external request switching mode comprises two conditions:
in the first situation, a driver steps on a brake pedal to control the change of the opening degree of a main brake valve;
the central control unit compares the acquired information with the set information according to the information acquired by the road surface by combining a wheel speed sensor signal and a pressure sensor, so that an air inlet electromagnetic valve in the IAEB electromagnetic relay valve is controlled to be opened, an air outlet electromagnetic valve is controlled to be closed, and brake air is pressurized;
the brake air that two kinds of condition produced will converge two-way check valve both sides, two-way check valve gets the atmospheric pressure that the atmospheric pressure value is bigger among them and passes through, the pipeline from the air inlet to the gas outlet is dredged, the brake air through compressor compression gets into the gas outlet from the air inlet, when the atmospheric pressure value in the gas outlet is greater than the brake master valve and flows to the relay valve atmospheric pressure value, promote the relay valve upwards, the atmospheric pressure value that the income atmospheric pressure in the gas outlet has satisfied driver/external request needs the brake at this moment, combine the ABS valve on the wheel, prevent that the vehicle from locking, the vehicle slows down that brakes.
10. The brake-by-wire system based on the ABS architecture of the commercial vehicle as claimed in claim 7, wherein the parking brake mode has a specific work flow:
when parking braking is carried out, the main braking valve and the IAEB electromagnetic relay valve do not work, two electromagnetic valves in the IAEB electromagnetic relay valve are not electrified, a driver pulls up a hand brake, and parking braking is carried out through the parking relay valve by brake air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211594279.1A CN115923739A (en) | 2022-12-13 | 2022-12-13 | Drive-by-wire braking system based on commercial car ABS framework |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211594279.1A CN115923739A (en) | 2022-12-13 | 2022-12-13 | Drive-by-wire braking system based on commercial car ABS framework |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115923739A true CN115923739A (en) | 2023-04-07 |
Family
ID=86698748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211594279.1A Pending CN115923739A (en) | 2022-12-13 | 2022-12-13 | Drive-by-wire braking system based on commercial car ABS framework |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115923739A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105128845A (en) * | 2015-08-20 | 2015-12-09 | 广州科密汽车电子控制技术股份有限公司 | Automobile EBS system based on braking main valve |
| CN110816502A (en) * | 2019-11-22 | 2020-02-21 | 浙江万安科技股份有限公司 | Intelligent parking EPB valve system, EPB valve assembly and intelligent parking control method for commercial vehicle |
| CN110936940A (en) * | 2019-11-13 | 2020-03-31 | 广州瑞立科密汽车电子股份有限公司 | Commercial vehicle ESC system based on AEBS relay valve |
| CN113799756A (en) * | 2021-09-29 | 2021-12-17 | 广州瑞立科密汽车电子股份有限公司 | Distributed control system and method based on commercial vehicle ESC architecture |
| CN113928289A (en) * | 2021-09-29 | 2022-01-14 | 广州瑞立科密汽车电子股份有限公司 | Centralized control system and method based on commercial vehicle ESC architecture |
| CN114043973A (en) * | 2021-11-30 | 2022-02-15 | 广州瑞立科密汽车电子股份有限公司 | Redundant actuator-based line control system and method |
-
2022
- 2022-12-13 CN CN202211594279.1A patent/CN115923739A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105128845A (en) * | 2015-08-20 | 2015-12-09 | 广州科密汽车电子控制技术股份有限公司 | Automobile EBS system based on braking main valve |
| CN110936940A (en) * | 2019-11-13 | 2020-03-31 | 广州瑞立科密汽车电子股份有限公司 | Commercial vehicle ESC system based on AEBS relay valve |
| CN110816502A (en) * | 2019-11-22 | 2020-02-21 | 浙江万安科技股份有限公司 | Intelligent parking EPB valve system, EPB valve assembly and intelligent parking control method for commercial vehicle |
| CN113799756A (en) * | 2021-09-29 | 2021-12-17 | 广州瑞立科密汽车电子股份有限公司 | Distributed control system and method based on commercial vehicle ESC architecture |
| CN113928289A (en) * | 2021-09-29 | 2022-01-14 | 广州瑞立科密汽车电子股份有限公司 | Centralized control system and method based on commercial vehicle ESC architecture |
| CN114043973A (en) * | 2021-11-30 | 2022-02-15 | 广州瑞立科密汽车电子股份有限公司 | Redundant actuator-based line control system and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100491153C (en) | Composite braking system for electric automobile | |
| CN200939875Y (en) | Electronic controlled braking system for medium heavy duty automobile | |
| CN107757379B (en) | Decoupling type braking energy recovery system and control method thereof | |
| CN100422015C (en) | Pneumatically braking anti-lock brake system for mixed powered automobile | |
| CN106671980A (en) | Pure electric bus self-adaptive cruise system and control method | |
| CN110936943A (en) | Electronic control brake system of commercial vehicle | |
| CN111907502B (en) | Tractor air brake hill start auxiliary system | |
| CN109910854B (en) | Automobile automatic braking mechanism utilizing vacuum booster and control method thereof | |
| CN115923739A (en) | Drive-by-wire braking system based on commercial car ABS framework | |
| CN114030451B (en) | Electric control air pressure braking system and method | |
| CN206528471U (en) | A kind of pure electric coach self-adaption cruise system | |
| CN210554754U (en) | Emergency braking system for vehicle and vehicle | |
| CN212386470U (en) | Intelligent digital electric control air brake valve for automobile | |
| CN211710804U (en) | Electronic control brake system of commercial vehicle | |
| CN113492814A (en) | Commercial vehicle and electronic parking braking system thereof | |
| CN2605166Y (en) | Electric controlled booster relay valve and its brake pipe system | |
| JP3887852B2 (en) | Brake control device | |
| CN216331991U (en) | Electronic brake control system of fusion control actuating mechanism | |
| CN216684399U (en) | Braking system of electric mining dump truck and electric mining dump truck | |
| CN115071654B (en) | Vehicle emergency braking control system and method based on parking braking | |
| CN212148795U (en) | Gas circuit execution assembly of electronic parking system | |
| CN219339429U (en) | Pneumatic service brake control system of commercial vehicle | |
| CN218536642U (en) | Gas system for automobile and automobile train | |
| CN114715103B (en) | Truck emergency braking system and operation method | |
| CN110733486B (en) | Control method and device for intelligent digital electric control air brake valve of automobile |
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 |