CN111824155B - Method and system for controlling parking brake force to supplement brake force - Google Patents
Method and system for controlling parking brake force to supplement brake force Download PDFInfo
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- CN111824155B CN111824155B CN201910301107.2A CN201910301107A CN111824155B CN 111824155 B CN111824155 B CN 111824155B CN 201910301107 A CN201910301107 A CN 201910301107A CN 111824155 B CN111824155 B CN 111824155B
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000013589 supplement Substances 0.000 title claims abstract description 23
- 230000008569 process Effects 0.000 claims description 10
- 230000001502 supplementing effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 9
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/18—Propelling the vehicle
- B60W30/18009—Propelling the vehicle related to particular drive situations
- B60W30/18109—Braking
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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
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/46—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition the pressure being reduced by exhausting fluid
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Automation & Control Theory (AREA)
- Regulating Braking Force (AREA)
Abstract
The invention provides a method and a system for controlling parking brake force to supplement brake force. After receiving a brake application instruction, the parking brake control unit ECU compares the current vehicle deceleration with the whole vehicle target deceleration to judge whether the situation of insufficient brake force exists; if so, the parking brake force is controlled for brake force replenishment. The braking force supplementing method and the braking force supplementing system can supplement the braking force by using the parking braking force under the condition that the braking force of the vehicle is insufficient, provide redundancy of braking performance and improve the safety of the vehicle.
Description
Technical Field
The present invention relates to a method and system for braking force supplement, and more particularly, to a method and system for braking force supplement by controlling parking braking force.
Background
At present, in the field of public transportation, the requirements of customers on the safety and the reliability of a braking system are higher and higher. The parking brake is used as a brake mode of the vehicle, is mainly used for returning the vehicle to a garage or parking the vehicle for a long time, and can also be used as an emergency parking mode when the vehicle runs.
In the field of air braking, vehicle parking braking mainly comprises electric control and pneumatic control. The electric control parking brake and the pneumatic control parking brake are realized by controlling the pressure of a parking brake cylinder. When the parking brake is applied, the pressure of the parking brake cylinder is exhausted through electric control or pneumatic control, and the spring force is released to apply the parking brake; when the parking brake is released, the parking brake cylinder is inflated through electric control or pneumatic control, the spring is compressed, and no parking brake force is output.
When the vehicle is normally braked, the brake is carried out through a handle or a pedal plate, and a brake instruction is sent to a brake execution unit, so that the situation of insufficient brake force can occur when the execution unit fails. When abnormal conditions occur, a driver can only adopt two modes of applying or relieving parking brake to control the vehicle state, the requirement on the driver operation is high, and the intelligent driving trend of the vehicle is not adapted.
Disclosure of Invention
In order to solve the problems, the technical scheme provides a method and a system for controlling parking braking force to supplement braking force.
The invention provides a method for controlling parking brake force to supplement brake force, which comprises the following steps:
step 1, in the running process of a vehicle, a parking brake control unit ECU receives a brake application instruction sent by a whole vehicle brake control unit;
step 4, the parking brake control unit ECU controls a pressure retaining valve to exhaust the parking brake cylinder, and the step 2 is returned;
and 5, stopping the pressure retaining valve by the parking brake control unit ECU, and stopping exhausting of the parking brake cylinder.
Preferably, in step 4, the parking brake control unit ECU performs phase control on the pressure retaining valve to perform phase exhaust on the parking brake cylinder.
Preferably, before step 3 is completed and step 4 is executed, the parking brake control unit ECU acquires pressure information of the parking brake cylinder through a pressure sensor, and pre-determines a braking force range of the parking brake cylinder pressure.
Preferably, in step 4, the parking brake control unit ECU adjusts the frequency of the phase control according to the predetermined result.
Preferably, in step 3, the vehicle braking control unit calculates the target deceleration of the vehicle according to the level information of the normal braking module, and sends the target deceleration to the parking braking control unit ECU.
The present invention also provides a system for controlling parking brake force for brake force replenishment, comprising:
the normal braking module is connected with the whole vehicle braking control unit and used for generating level information and sending the level information to the whole vehicle braking control unit;
the whole vehicle brake control unit is respectively connected with the normal brake module and the parking brake control unit ECU; the system is used for calculating the target deceleration of the whole vehicle according to the level information; the parking brake control unit ECU is used for sending the target deceleration and the brake application instruction of the whole vehicle to the parking brake control unit ECU;
the speed sensor is connected with the parking brake control unit ECU and used for acquiring vehicle speed information and sending the vehicle speed information to the parking brake control unit ECU;
the parking brake cylinder is connected with the pressure retaining valve and provides braking force by exhausting gas;
the pressure retaining valve is respectively connected with the parking cylinder brake cylinder and the parking brake control unit ECU; exhausting the parking brake cylinder according to the control of the parking brake control unit ECU;
the parking brake control unit ECU is respectively connected with the whole vehicle brake control unit, the speed sensor and the pressure retaining valve; for receiving the brake application command; the vehicle deceleration is calculated according to the vehicle speed information, and the current vehicle deceleration is compared with the whole vehicle target deceleration; and is also used for controlling the pressure retaining valve.
Preferably, the system for controlling parking brake force to supplement brake force comprises a pressure sensor, which is respectively connected with the parking brake control unit ECU and the parking brake cylinder; the pressure sensor is used for acquiring pressure information of the parking brake cylinder and sending the pressure information to the parking brake control unit ECU; and the parking brake control unit ECU pre-judges the braking force range of the parking brake cylinder according to the pressure information.
Preferably, the parking brake control unit ECU is configured to adjust the frequency of the phase control according to the result of the prediction.
Preferably, the normal braking module may be a service brake or a handle brake.
Preferably, the whole vehicle brake control unit is used for receiving the level information sent by the normal brake module and calculating the target deceleration of the whole vehicle according to the level information; and the target deceleration of the whole vehicle is sent to a parking brake control unit ECU.
The invention has the beneficial effects that:
1. the invention utilizes parking braking force to the maximum extent by controlling the parking braking force as a braking mode supplement.
2. The invention realizes the effectiveness of vehicle braking and improves the safety of the vehicle by detecting the speed of the vehicle and adjusting the braking force.
3. The invention fully utilizes parking brake and improves the redundancy of brake performance.
Drawings
The foregoing summary, as well as the following detailed description of the invention, will be better understood when read in conjunction with the appended drawings. It is to be noted that the figures are only examples of the claimed invention. In the drawings, like reference characters designate the same or similar elements.
FIG. 1 is a schematic illustration of a method of controlling parking brake force for brake force replenishment according to the present invention;
FIG. 2 is a schematic illustration of a method of controlling parking brake force for brake force replenishment provided by the present invention;
FIG. 3 is a schematic diagram of a system for controlling parking brake force for brake force replenishment according to the present invention;
FIG. 4 is a schematic diagram of a system for controlling parking brake force for brake force replenishment according to the present invention;
Detailed Description
The detailed features and advantages of the present invention are described in detail in the detailed description which follows, and will be sufficient for anyone skilled in the art to understand the technical content of the present invention and to implement the present invention, and the related objects and advantages of the present invention will be easily understood by those skilled in the art from the description, claims and drawings disclosed in the present specification.
In one embodiment, FIG. 1 is a schematic diagram of one embodiment of a method of controlling parking brake force for brake force replenishment according to the present invention. FIG. 3 is a schematic diagram of one embodiment of a system for controlling parking brake force to supplement braking force provided by the present invention, and the embodiment shown in FIG. 1 is described with reference to the system schematic diagram of FIG. 3. As shown in fig. 1, the method of controlling parking brake force for brake force replenishment of this embodiment includes the steps of:
s101, in the running process of the vehicle, the parking brake control unit ECU 1 receives a brake application instruction sent by the whole vehicle brake control unit 2.
It can be understood that when the vehicle is in a running state, the vehicle is generally braked in the running process of the vehicle in a handle or pedal braking mode, and at the moment, the whole vehicle brake control unit sends a brake application instruction to the brake execution unit to complete braking; however, the brake actuating unit may fail, resulting in insufficient braking force. Therefore, when the whole vehicle brake control unit of the invention sends the brake application instruction to the execution unit in the general brake mode, the whole vehicle brake control unit also sends the brake application instruction to the parking brake control unit ECU 1, and the function of providing brake force redundancy is achieved.
It should be noted that the parking brake control unit ECU 1 may be a structure dedicated to controlling parking brakes, or may be a structure for controlling parking brakes on the general ECU 1.
S102, the parking brake control unit ECU 1 acquires the current speed information of the vehicle through the speed sensor 3, and performs deceleration calculation to obtain the deceleration of the vehicle. The parking brake control unit ECU 1 receives the target deceleration of the whole vehicle calculated by the whole vehicle brake control unit 2 according to the level information of the normal brake module 6 from the whole vehicle brake control unit 2.
S103, comparing the vehicle deceleration with the whole vehicle target deceleration by the parking braking force unit ECU 1; and when the vehicle deceleration is smaller than the whole vehicle target deceleration, performing S104, otherwise performing S105.
It can be understood that the parking brake control unit ECU can supplement the braking force in time when the braking force is insufficient by monitoring the deceleration of the vehicle and comparing the deceleration of the vehicle with the target deceleration of the whole vehicle, and as a redundant mode, the parking brake control unit ECU can ensure the effectiveness of vehicle braking and improve the safety.
In S104, parking brake control unit ECU 1 controls pressure retaining valve 4 to exhaust parking brake cylinder 5, and returns to step S102.
It is understood that the parking brake control unit ECU 1 cyclically performs the three steps of controlling the pressure-maintaining valve 4 to exhaust the parking brake cylinder 5 and detecting again whether the target deceleration of the entire vehicle is achieved, and supplements the parking brake force according to the braking effect that the vehicle is expected to achieve.
It should be noted that, the general control of parking brake includes two processes of parking application and parking release, in the parking application process, the parking solenoid valve 8 is in a parking application position, and the parking solenoid valve 8 controls the pressure retaining valve 4 to enable the gas in the parking brake cylinder 5 to be exhausted to the parking solenoid valve 7 through the pressure retaining valve 4, so as to achieve the parking brake application function; in the process of relieving parking, the parking electromagnetic valve 8 is in the parking relieving position, compressed air in the air source 7 enters the pressure retaining valve 4 through the parking electromagnetic valve 7 and finally enters the parking brake cylinder 5, and the effect of relieving parking brake is achieved. The invention adopts a control process different from the common control of parking brake to supplement the brake force, and controls the pressure retaining valve 4 through the parking brake control unit ECU 1 to realize the function of supplementing the brake force.
S104 may include parking brake control unit ECU 1 performing phase control of pressure-retaining valve 4 to perform phase exhaust of parking brake cylinder 5.
It can be understood that the parking brake control unit ECU 1 performs stage control on the pressure retaining valve 4, so that excessive parking brake force can be prevented from being input once, and the parking brake force can be reasonably supplemented.
S105, the parking brake control unit ECU 1 stops the pressure retaining valve 4 to stop the exhaust of the parking brake cylinder 5.
In another embodiment, FIG. 2 is a schematic diagram of an embodiment of a method for controlling parking brake force for brake force replenishment according to the present invention. FIG. 4 is a schematic diagram of an embodiment of a system for controlling parking brake force for brake force replenishment according to the present invention, and the embodiment of FIG. 2 is described with reference to the schematic diagram of FIG. 4. On the basis of the embodiment of the method for controlling parking brake force to supplement brake force shown in fig. 1, the embodiment further includes that, before S103 in fig. 2 is completed and the step shown in S105 in fig. 2 is executed, the parking brake control unit ECU 1 obtains pressure information of the parking brake cylinder 5 through a pressure sensor, and pre-determines the brake force range of the parking brake cylinder pressure.
It is understood that parking brake control unit ECU 1 obtains pressure information of parking brake cylinder 5 from the pressure sensor, and determines whether the pressure reaches a preset value, that is, whether a demand for replenishing braking force is satisfied. And the parking braking force control can be subsequently adjusted through a pre-judging result.
In S105, the parking brake control unit ECU 1 adjusts the frequency of control over the pressure retaining valve stage according to the pre-determination result.
It can be understood that, the parking brake control unit ECU 1 adjusts the frequency of the pressure retaining valve stage control, so as to improve the system response efficiency and meet the requirement of the supplementary braking force.
In another embodiment, FIG. 3 is a schematic representation of one embodiment of a system for controlling parking brake force to supplement braking force provided by the present invention. As shown in fig. 3, the system for controlling parking brake force for brake force supplement of the embodiment includes a normal brake module 6, a vehicle brake control unit 2, a speed sensor 3, a parking brake cylinder 5, a pressure retaining valve 4, and a parking brake control unit ECU 1.
The normal braking module 6 is connected with the whole vehicle braking control unit 2, and is used for generating braking level information according to the action of a user and sending the braking level information to the whole vehicle braking control unit 2.
The whole vehicle brake control unit 2 is respectively connected with the normal brake module 6 and the parking brake control unit ECU 1, calculates the target deceleration of the whole vehicle according to the level information sent by the normal brake module 6, sends the target deceleration to the parking brake control unit ECU 1, and also sends a brake application instruction to the parking brake control unit ECU 1.
The speed sensor 3 is connected with the parking brake control unit ECU 1, and is configured to acquire vehicle speed information and send the vehicle speed information to the parking brake control unit ECU 1.
The parking brake control unit ECU 1 is respectively connected with the whole vehicle brake control unit 2, the speed sensor 3 and the pressure retaining valve 4; after receiving a brake application instruction sent by the whole vehicle control unit 2, receiving vehicle speed information sent by a speed sensor, calculating deceleration according to the vehicle speed information, comparing the vehicle deceleration with a whole vehicle target deceleration sent by the whole vehicle brake control unit 2, and determining whether to control the pressure retaining valve 4 according to a comparison result so as to exhaust the parking brake cylinder 5.
The pressure retaining valve 4 is connected to the parking brake control unit ECU 1 and the parking brake cylinder 5, respectively, and exhausts the parking brake cylinder 5 according to the control of the parking brake control unit ECU 1.
The parking brake cylinder 5 is connected with the pressure retaining valve 4, and provides parking brake force through exhausting gas.
It will be appreciated that the present invention provides a system for controlling parking brake force to supplement brake force in which a parking brake control unit ECU acts as a monitoring and control unit to provide brake force supplement by monitoring vehicle speed and controlling exhaust.
It should be noted that the parking brake control unit ECU may be a structure dedicated to controlling parking brakes, or may be a structure for controlling parking brakes on a general ECU.
The normal braking module 6 may be a service brake or a handle brake.
It will be appreciated that the normal braking module generally brakes the vehicle during operation of the vehicle.
In another embodiment, FIG. 4 is a schematic diagram of an embodiment of a system for controlling parking brake force for brake force replenishment according to the present invention. This embodiment is based on a system for controlling parking brake force for brake force replenishment shown in fig. 3, and further includes:
the pressure sensor 7 is respectively connected with the parking brake control unit ECU 1 and the parking brake cylinder 5, and is used for acquiring pressure information of the parking brake cylinder and sending the pressure information to the parking brake control unit ECU 1; the parking brake control unit ECU 1 pre-determines the braking force range of the parking brake cylinder 5 based on the pressure information.
The parking brake control unit ECU 1 is configured to adjust the frequency of the phase control of the pressure retaining valve according to the pre-determined result of the braking force range.
The terms and expressions which have been employed are used as terms of description and not of limitation. The use of such terms and expressions is not intended to exclude any equivalents of the features shown and described (or portions thereof), and it is recognized that various modifications may be made within the scope of the claims. Other modifications, variations, and alternatives are also possible. Accordingly, the claims should be looked to in order to cover all such equivalents.
Also, it should be noted that although the present invention has been described with reference to the current specific embodiments, it should be understood by those skilled in the art that the above embodiments are merely illustrative of the present invention, and various equivalent changes or substitutions may be made without departing from the spirit of the present invention, and therefore, it is intended that all changes and modifications to the above embodiments be included within the scope of the claims of the present application.
Claims (7)
1. A method of controlling parking brake force for brake force replenishment comprising the steps of:
(1) In the running process of the vehicle, the parking brake control unit ECU receives a brake application instruction sent by a whole vehicle brake control unit;
(2) The parking brake control unit ECU acquires vehicle speed information through a speed sensor, and performs deceleration calculation to obtain vehicle deceleration;
(3) The parking brake control unit ECU compares the vehicle deceleration with a target deceleration of the entire vehicle; when the vehicle deceleration is smaller than the whole vehicle target deceleration, performing the step (4), otherwise, performing the step (5);
after the step (3) is completed and before the step (4) is executed, the parking brake control unit ECU acquires pressure information of a parking brake cylinder through a pressure sensor, and pre-judges the braking force range of the pressure of the parking brake cylinder;
(4) The parking brake control unit ECU performs stage control on a pressure retaining valve to enable the parking brake cylinder to perform stage exhaust so as to supplement braking force for braking in the running process of the vehicle, and the step (2) is returned;
(5) And the parking brake control unit ECU enables the pressure retaining valve to be cut off, and stops the exhaust of the parking brake cylinder.
2. The method of controlling parking brake force for brake force replenishment according to claim 1, wherein in step (4), the parking brake control unit ECU adjusts the frequency of the phase control according to the result of the prejudgment.
3. The method for controlling parking brake force to supplement brake force according to claim 1, wherein in the step (3), the whole vehicle brake control unit calculates the target deceleration of the whole vehicle according to the level information generated by the normal brake module, and sends the target deceleration to the parking brake control unit ECU.
4. A system for controlling parking brake force for brake force replenishment, comprising:
the normal braking module is connected with the whole vehicle braking control unit and used for generating level information and sending the level information to the whole vehicle braking control unit;
the whole vehicle brake control unit is respectively connected with the normal brake module and the parking brake control unit ECU and is used for sending a brake application instruction to the parking brake control unit ECU;
the speed sensor is connected with the parking brake control unit ECU and used for acquiring vehicle speed information and sending the vehicle speed information to the parking brake control unit ECU;
the parking brake cylinder is connected with the pressure retaining valve and provides braking force by exhausting gas;
the pressure retaining valve is respectively connected with the parking brake cylinder and the parking brake control unit ECU; exhausting the parking brake cylinder according to the control of the parking brake control unit ECU;
the parking brake control unit ECU is respectively connected with the whole vehicle brake control unit, the speed sensor and the pressure retaining valve; for receiving the brake application command; the vehicle deceleration is calculated according to the vehicle speed information, and the vehicle deceleration is compared with the whole vehicle target deceleration; the pressure retaining valve is also used for performing stage control on the pressure retaining valve, so that the parking brake cylinder performs stage exhaust, and braking force supplement is performed on braking in the running process of the vehicle;
the parking brake control unit ECU is connected with the parking brake cylinder; the pressure sensor is used for acquiring pressure information of the parking brake cylinder and sending the pressure information to the parking brake control unit ECU; and the parking brake control unit ECU pre-judges the braking force range of the parking brake cylinder according to the pressure information.
5. The system for controlling parking brake force for brake force replenishment according to claim 4, wherein the parking brake control unit ECU is configured to adjust the frequency of the phase control in accordance with the result of the prejudgment.
6. The system for controlling parking brake force for brake force replenishment of claim 4, wherein the normal brake module is one of a foot brake and a handlebar brake.
7. The system for controlling parking brake force to supplement brake force according to claim 4, wherein the whole vehicle brake control unit is used for receiving level information sent by the normal brake module and calculating the target deceleration of the whole vehicle according to the level information; and the system is used for sending the target deceleration of the whole vehicle to a parking brake control unit ECU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910301107.2A CN111824155B (en) | 2019-04-15 | 2019-04-15 | Method and system for controlling parking brake force to supplement brake force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910301107.2A CN111824155B (en) | 2019-04-15 | 2019-04-15 | Method and system for controlling parking brake force to supplement brake force |
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| Publication Number | Publication Date |
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| CN111824155A CN111824155A (en) | 2020-10-27 |
| CN111824155B true CN111824155B (en) | 2023-03-07 |
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| CN201910301107.2A Active CN111824155B (en) | 2019-04-15 | 2019-04-15 | Method and system for controlling parking brake force to supplement brake force |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113183935A (en) * | 2021-06-02 | 2021-07-30 | 中车青岛四方车辆研究所有限公司 | Urban rail vehicle braking system and method based on deceleration closed-loop control |
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| CN102180165A (en) * | 2011-04-19 | 2011-09-14 | 铁道部运输局 | Method and system for preventing applied accidental parking brake on railway train |
| DE102012214900A1 (en) * | 2012-08-22 | 2014-02-27 | Continental Teves Ag & Co. Ohg | Method for holding motor car, involves activating parking brake at holding wheels, when measured wheel acceleration and/or wheel speed at holding wheels is lowered below preset holding threshold level at service brake |
| CN106080567A (en) * | 2016-06-15 | 2016-11-09 | 中车唐山机车车辆有限公司 | The control device of rail vehicle brake hard and rail vehicle |
| JP2017114374A (en) * | 2015-12-25 | 2017-06-29 | クノールブレムゼ商用車システムジャパン株式会社 | Brake system and brake monitoring method |
| CN109334649A (en) * | 2018-11-20 | 2019-02-15 | 徐工集团工程机械有限公司 | Rail convertible car braking system and rail convertible car |
| CN109398334A (en) * | 2018-12-29 | 2019-03-01 | 芜湖伯特利汽车安全***股份有限公司 | A kind of control method and system promoting motor vehicle service brake safety based on parking braking |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201882072U (en) * | 2010-12-08 | 2011-06-29 | 中国铁道科学研究院机车车辆研究所 | Electro-pneumatic braking system |
| CN201914241U (en) * | 2010-12-08 | 2011-08-03 | 中国铁道科学研究院机车车辆研究所 | Integrated electric pneumatic brake |
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2019
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102180165A (en) * | 2011-04-19 | 2011-09-14 | 铁道部运输局 | Method and system for preventing applied accidental parking brake on railway train |
| DE102012214900A1 (en) * | 2012-08-22 | 2014-02-27 | Continental Teves Ag & Co. Ohg | Method for holding motor car, involves activating parking brake at holding wheels, when measured wheel acceleration and/or wheel speed at holding wheels is lowered below preset holding threshold level at service brake |
| JP2017114374A (en) * | 2015-12-25 | 2017-06-29 | クノールブレムゼ商用車システムジャパン株式会社 | Brake system and brake monitoring method |
| CN106080567A (en) * | 2016-06-15 | 2016-11-09 | 中车唐山机车车辆有限公司 | The control device of rail vehicle brake hard and rail vehicle |
| CN109334649A (en) * | 2018-11-20 | 2019-02-15 | 徐工集团工程机械有限公司 | Rail convertible car braking system and rail convertible car |
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| CN111824155A (en) | 2020-10-27 |
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