CN108128290A - Automatic cooling system for vehicle drum brake and control method thereof - Google Patents
Automatic cooling system for vehicle drum brake and control method thereof Download PDFInfo
- Publication number
- CN108128290A CN108128290A CN201810022893.8A CN201810022893A CN108128290A CN 108128290 A CN108128290 A CN 108128290A CN 201810022893 A CN201810022893 A CN 201810022893A CN 108128290 A CN108128290 A CN 108128290A
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- Prior art keywords
- water
- signal
- control unit
- spray
- frictional heat
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- 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
- 238000001816 cooling Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 77
- 239000007921 spray Substances 0.000 claims abstract description 71
- 238000005507 spraying Methods 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000002699 waste material Substances 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
- B60T5/00—Vehicle modifications to facilitate cooling of brakes
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
- Regulating Braking Force (AREA)
Abstract
The utility model provides a drum brake automatic cooling system for vehicle, including ECU electrical unit, spray set, the communicating water tank with spray set, VECU whole car electrical unit, the instrument, TCU automatic gearbox control unit and CAN bus signal connection, and be equipped with friction heat calculation module, the water spray volume control module in the ECU electrical unit, the input port and the vehicle signal input port signal connection of friction heat calculation module, output port passes through water spray volume control module and spray set signal connection, its control method is: when the ECU receives a brake opening signal and the gradient signal is negative, the spraying device is controlled to start working, meanwhile, the friction heat calculation module starts to calculate the friction heat, and then the water spraying amount control module controls the water spraying amount of the spraying device according to the calculated friction heat. The design improves the reliability of use and reduces the cost.
Description
Technical field
The invention belongs to automobile brake technical fields, and in particular to a kind of automobile-used drum brake automatic cooling system and its
Control method, suitable for improving its use reliability, reducing cost.
Background technology
Heavy truck would generally use drum brake.Although the brake force of drum brake is big, it radiates and heat resistanceheat resistant
Decline can force difference.When truck load travel in mountain area when, especially in descending, it is curved it is more, slope is steep, brake easily generates high temperature,
Friction plate and brake drum wear can not only be made, can also lead to brake fade because of brake drum heat fading, seriously affect traffic safety, because
This can generally be equipped with brake cooling sprayer on operation vehicle.
Chinese patent：Application publication number is CN202557516U, and data of publication of application is new for the practicality on November 28th, 2012
Type patent discloses a kind of automotive brake automatic temperature reducing device, including central processing unit, temperature sensor, water tank, liquid level
Sensor and spray equipment, spray equipment include solenoid valve and water drenching device, central processing unit respectively with temperature sensor, electromagnetism
Valve, liquid level sensor are connected, and solenoid valve is connected by water pipe with water tank and water drenching device respectively, and temperature sensor is mounted on automobile system
On dynamic device, liquid level sensor is arranged in water tank, and loud speaker is mounted on automobile tail, and water drenching device is mounted on automotive brake
Side.Its temperature conditions by temperature sensor monitors automotive brake is only more than pre-set threshold value in brake temperature
Shi Qidong water drenching device spray coolings, although the waste of water resource can be avoided, the key of system control is in temperature sensor
Detection, and since brake drum rotates, sensor can be only installed near it, and wheel sludge can be stained on a sensor, influence its essence
Degree, meanwhile, high temperature, sewage can also influence the connection reliability of sensor harness.
Invention content
The purpose of the present invention is overcoming the problems, such as that use reliability of the existing technology is poor, providing one kind can improve
Its use reliability and the automobile-used drum brake automatic cooling system and its control method for reducing cost.
In order to achieve the above object, technical scheme is as follows：
A kind of automobile-used drum brake automatic cooling system, including ECU electronic control unit, spray equipment, water tank, the spray
Device is communicated by pipeline with water tank, and the control terminal of spray equipment is connect with ECU electronic control unit signals；
The automatic cooling system further includes VECU vehicles electronic control unit, instrument, TCU automatic gear-box control units, institute
The brake switch signal output port for stating VECU vehicle electronic control unit is connect with CAN bus signal, the speed signal of the instrument
Output port is connect with CAN bus signal, the complete vehicle quality and deceleration and the gradient of the TCU automatic gear-box control unit
Signal output port is connect with CAN bus signal, signals of vehicles input port and the CAN bus signal of the ECU electronic control unit
Connection, and ECU electronic control unit is internally provided with frictional heat computing module, water spray control module, the frictional heat gauge
The input port for calculating module is connect with signals of vehicles input port signal, and the output port of frictional heat computing module passes through water spray
Amount control module is connect with spray equipment signal.
The spray equipment includes water-drainage solenoid valve, nozzle, the water inlet end of the water-drainage solenoid valve and going out for water tank bottom
Penstock communicates, and the water outlet of water-drainage solenoid valve is communicated with nozzle, and the control terminal of water-drainage solenoid valve and water spray control module
Signal connects.
The PWM duty cycle signal output port and water-drainage solenoid valve that the water spray control module passes through ECU electronic control unit
Signal connects.
A kind of control method of automobile-used drum brake automatic cooling system, this method are：First, the automatically controlled list of VECU vehicles
Member sends brake switch signal in real time by brake switch signal output port, and instrument is sent out in real time by speed signal output port
Speed signal is sent, TCU automatic gear-box control unit is real-time by complete vehicle quality and deceleration and grade signal output port
Complete vehicle quality, deceleration and grade signal are sent, ECU electronic control unit receives above-mentioned signal by signals of vehicles input port, when
ECU electronic control unit receives control spray equipment when braking open signal and grade signal are negative and starts to work, while frictional heat
Amount computing module starts to calculate frictional heat, and subsequent water spray control module is according to the frictional heat control spray dress being calculated
The water spray put.
The frictional heat computing module calculates frictional heat Q by the following formula：
In formula, t is braking time, and m is complete vehicle quality, and v is speed, and a is deceleration, and i is the gradient；
The water spray W is calculated by the following formula：
W=k (Q-Q0)
In formula, k is proportionality coefficient, and Q is frictional heat, Q0For starting water spray heat.
Compared with prior art, beneficial effects of the present invention are：
It is automatic that a kind of automobile-used drum brake automatic cooling system of the present invention includes VECU vehicles electronic control unit, instrument, TCU
Gear box control unit, the brake switch signal output port of VECU vehicle electronic control unit, the speed signal output port of instrument,
Complete vehicle quality and deceleration and grade signal output port, the vehicle of ECU electronic control unit of TCU automatic gear-box control units
Signal input port is connect with CAN bus signal, and ECU electronic control unit be internally provided with frictional heat computing module, spray
Water rate control module, the input port of frictional heat computing module are connect with signals of vehicles input port signal, and output port leads to
It crosses water spray control module to connect with spray equipment signal, which eliminates the use of temperature sensor, by collected
Brake switch, speed, complete vehicle quality, deceleration and grade signal calculate the control that frictional heat realizes cooling water inflow, not only
The generation for bad phenomenon of spraying water caused by sensor fault is avoided, improves use reliability, and reduce cost.Cause
This, invention not only improves use reliability, and reduces cost.
Description of the drawings
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the internal structure block diagram of ECU electronic control unit in Fig. 1.
In figure：ECU electronic control unit 1, signals of vehicles input port 11, frictional heat computing module 12, water spray control mould
Block 13, PWM duty cycle signal output port 14, spray equipment 2, water-drainage solenoid valve 21, nozzle 22, water tank 3, VECU vehicles are automatically controlled
Unit 4, brake switch signal output port 41, instrument 5, speed signal output port 51, TCU automatic gear-box control unit 6,
Complete vehicle quality and deceleration and grade signal output port 61, CAN bus 7.
Specific embodiment
The present invention is described in further detail with specific embodiment for explanation below in conjunction with the accompanying drawings.
Referring to Fig. 1, Fig. 2, a kind of automobile-used drum brake automatic cooling system, including ECU electronic control unit 1, spray equipment
2nd, water tank 3, the spray equipment 2 are communicated by pipeline with water tank 3, control terminal and 1 signal of ECU electronic control unit of spray equipment 2
Connection；
The automatic cooling system further includes VECU vehicles electronic control unit 4, instrument 5, TCU automatic gear-box control unit 6,
The brake switch signal output port 41 of the VECU vehicles electronic control unit 4 is connect with 7 signal of CAN bus, the vehicle of the instrument 5
Fast signal output port 51 is connect with 7 signal of CAN bus, the complete vehicle quality of the TCU automatic gear-box control unit 6 and deceleration
Degree and grade signal output port 61 are connect with 7 signal of CAN bus, the signals of vehicles input port of the ECU electronic control unit 1
11 connect with 7 signal of CAN bus, and ECU electronic control unit 1 be internally provided with frictional heat computing module 12, water spray control
Module 13, the input port of the frictional heat computing module 12 are connect with 11 signal of signals of vehicles input port, frictional heat
The output port of computing module 12 is connect by water spray control module 13 with 2 signal of spray equipment.
The spray equipment 2 includes water-drainage solenoid valve 21, nozzle 22, water inlet end and the water tank 3 of the water-drainage solenoid valve 21
The flowing water Valve 31 of bottom communicates, and the water outlet of water-drainage solenoid valve 21 is communicated with nozzle 22, and the control terminal of water-drainage solenoid valve 21
It is connect with 12 signal of water spray control module.
PWM duty cycle signal output port 14 and discharge water electricity of the water spray control module 13 by ECU electronic control unit 1
21 signal of magnet valve connects.
A kind of control method of automobile-used drum brake automatic cooling system, this method are：First, the automatically controlled list of VECU vehicles
Member 4 sends brake switch signal in real time by brake switch signal output port 41, and instrument 5 passes through speed signal output port 51
Speed signal is sent in real time, and TCU automatic gear-box control unit 6 passes through complete vehicle quality and deceleration and grade signal output terminal
Mouth 61 sends complete vehicle qualities, deceleration and grade signal, ECU electronic control unit 1 and is received by signals of vehicles input port 11 in real time
Above-mentioned signal controls spray equipment 2 to start work when ECU electronic control unit 1 receives braking open signal and grade signal is negative
Make, while frictional heat computing module 11 starts to calculate frictional heat, subsequent water spray control module 12 is according to being calculated
Frictional heat controls the water spray of spray equipment 2.
The frictional heat computing module 11 calculates frictional heat Q by the following formula：
In formula, t is braking time, and m is complete vehicle quality, and v is speed, and a is deceleration, and i is the gradient；
The water spray W is calculated by the following formula：
W=k (Q-Q0)
In formula, k is proportionality coefficient, and Q is frictional heat, Q0For starting water spray heat.
The principle of the present invention is described as follows：
The present invention provides a kind of drum brake automatic cooling system, which passes through without temperature sensor
Increase CAN bus, frictional heat and water spray are calculated according to driving situation, so as to fulfill actively water spray control.
Since frictional heat Q is mainly absorbed by drum brake, and drum brake radiates mainly by cross-ventilation, it is clear that
Q is bigger, the Wen Shengyue high of drum brake, and the water spray W needed is also bigger.Correlative study is found, it is believed that Q and water spray
The proportional relationships of W, i.e. W=k (Q-Q0), wherein, k, Q0It can demarcate to obtain according to real vehicle condition.
Embodiment 1：
Referring to Fig. 1, Fig. 2, a kind of automobile-used drum brake automatic cooling system, including ECU electronic control unit 1, spray equipment
2nd, water tank 3, VECU vehicles electronic control unit 4, instrument 5, TCU automatic gear-box control unit 6, the spray equipment 2 include discharging water
Solenoid valve 21, nozzle 22, the water inlet end of the water-drainage solenoid valve 21 are communicated with the flowing water Valve 31 of 3 bottom of water tank, and discharge water electromagnetism
The water outlet of valve 21 is communicated with nozzle 22, and the brake switch signal output port 41 and CAN of the VECU vehicles electronic control unit 4 is total
7 signal of line connects, and the speed signal output port 51 of the instrument 5 is connect with 7 signal of CAN bus, the TCU automatic gear-box
The complete vehicle quality and deceleration and grade signal output port 61 of control unit 6 are connect with 7 signal of CAN bus, the ECU electricity
The signals of vehicles input port 11 of control unit 1 is connect with 7 signal of CAN bus, and ECU electronic control unit 1 is internally provided with friction
Heat Calculation module 12, water spray control module 13, the input port and signals of vehicles of the frictional heat computing module 12 are defeated
11 signal of inbound port connects, and it is automatically controlled that the output port of frictional heat computing module 12 passes sequentially through water spray control module 13, ECU
The PWM duty cycle signal output port 14 of unit 1 is connect with 21 signal of water-drainage solenoid valve.
A kind of control method of automobile-used drum brake automatic cooling system, this method are：First, the automatically controlled list of VECU vehicles
Member 4 sends brake switch signal in real time by brake switch signal output port 41, and instrument 5 passes through speed signal output port 51
Speed signal is sent in real time, and TCU automatic gear-box control unit 6 passes through complete vehicle quality and deceleration and grade signal output terminal
Mouth 61 sends complete vehicle qualities, deceleration and grade signal, ECU electronic control unit 1 and is received by signals of vehicles input port 11 in real time
Above-mentioned signal controls spray equipment 2 to start work when ECU electronic control unit 1 receives braking open signal and grade signal is negative
Make, while frictional heat computing module 11 starts to calculate frictional heat, subsequent water spray control module 12 is according to being calculated
Frictional heat controls the water spray of nozzle 22, wherein,
The frictional heat computing module 11 calculates frictional heat Q by the following formula：
In formula, t is braking time, and m is complete vehicle quality, and v is speed, and a is deceleration, and i is the gradient；
The water spray W is calculated by the following formula：
W=k (Q-Q0)
In formula, k is proportionality coefficient, and Q is frictional heat, Q0For starting water spray heat.
Claims (5)
1. a kind of automobile-used drum brake automatic cooling system, including ECU electronic control unit (1), spray equipment (2), water tank (3),
The spray equipment (2) is communicated by pipeline with water tank (3), control terminal and ECU electronic control unit (1) signal of spray equipment (2)
Connection, it is characterised in that：
The automatic cooling system further includes VECU vehicles electronic control unit (4), instrument (5), TCU automatic gear-box control units
(6), the brake switch signal output port (41) of the VECU vehicles electronic control unit (4) is communicated to connect with CAN bus (7), institute
The speed signal output port (51) and CAN bus (7) for stating instrument (5) communicate to connect, the TCU automatic gear-box control unit
(6) complete vehicle quality and deceleration and grade signal output port (61) are communicated to connect with CAN bus (7), and the ECU is automatically controlled
The signals of vehicles input port (11) of unit (1) is communicated to connect with CAN bus (7), and the inside setting of ECU electronic control unit (1)
There are frictional heat computing module (12), water spray control module (13), the input port of the frictional heat computing module (12)
It is connect with signals of vehicles input port (11) signal, the output port of frictional heat computing module (12) controls mould by water spray
Block (13) is connect with spray equipment (2) signal.
2. a kind of automobile-used drum brake automatic cooling system according to claim 1, it is characterised in that：The spray dress
It puts (2) and includes water-drainage solenoid valve (21), nozzle (22), the water inlet end of the water-drainage solenoid valve (21) and going out for water tank (3) bottom
Penstock (31) communicates, and the water outlet of water-drainage solenoid valve (21) is communicated with nozzle (22), and the control terminal of water-drainage solenoid valve (21)
It is connect with water spray control module (12) signal.
3. a kind of automobile-used drum brake automatic cooling system according to claim 2, it is characterised in that：The water spray
Control module (13) passes through the PWM duty cycle signal output port (14) of ECU electronic control unit (1) and water-drainage solenoid valve (21) signal
Connection.
4. a kind of control method of automobile-used drum brake automatic cooling system described in claim 1, it is characterised in that：
The control method is：First, VECU vehicles electronic control unit (4) is sent out in real time by brake switch signal output port (41)
Brake switch signal is sent, instrument (5) sends speed signal, TCU automatic gear-box in real time by speed signal output port (51)
Control unit (6) sends complete vehicle quality by complete vehicle quality and deceleration and grade signal output port (61), slows down in real time
Degree and grade signal, ECU electronic control unit (1) receives above-mentioned signal by signals of vehicles input port (11), when ECU electronic control unit
(1) control spray equipment (2) when braking open signal and grade signal are negative is received to start to work, while frictional heat calculates
Module (11) starts to calculate frictional heat, and subsequent water spray control module (12) is according to the frictional heat control spray being calculated
The water spray of device (2).
5. a kind of control method of automobile-used drum brake automatic cooling system according to claim 4, it is characterised in that：
The frictional heat computing module (11) calculates frictional heat Q by the following formula：
In formula, t is braking time, and m is complete vehicle quality, and v is speed, and a is deceleration, and i is the gradient；
The water spray W is calculated by the following formula：
W=k (Q-Q0)
In formula, k is proportionality coefficient, and Q is frictional heat, Q0For starting water spray heat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810022893.8A CN108128290A (en) | 2018-01-10 | 2018-01-10 | Automatic cooling system for vehicle drum brake and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810022893.8A CN108128290A (en) | 2018-01-10 | 2018-01-10 | Automatic cooling system for vehicle drum brake and control method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108128290A true CN108128290A (en) | 2018-06-08 |
Family
ID=62399782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810022893.8A Pending CN108128290A (en) | 2018-01-10 | 2018-01-10 | Automatic cooling system for vehicle drum brake and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108128290A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111547020A (en) * | 2020-05-29 | 2020-08-18 | 江西昌河汽车有限责任公司 | Brake with automatic cooling function and control method thereof |
| CN114516316A (en) * | 2022-01-28 | 2022-05-20 | 三一专用汽车有限责任公司 | Automatic water spraying method, controller and system for vehicle hub and vehicle |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19807392A1 (en) * | 1997-03-05 | 1998-09-10 | Volkswagen Ag | Device for cooling of road vehicle brakes |
| JP2001122107A (en) * | 1999-10-22 | 2001-05-08 | Akebono Brake Ind Co Ltd | Brake fade alarm giving device |
| KR20040046366A (en) * | 2002-11-27 | 2004-06-05 | 현대자동차주식회사 | brake cooling system for automotive vehicles |
| EP1950111A2 (en) * | 2007-01-23 | 2008-07-30 | Faiveley Transport Italia S.r.l. | Process for assessing the temperature of the braking elements of a vehicle, in particular a railway vehicle |
| DE102012017600A1 (en) * | 2012-09-06 | 2014-03-06 | Volkswagen Aktiengesellschaft | Method for operating actuating device for cooling wheel brake of motor vehicle, involves selecting cooling air flow to satisfactory cooling air demand by wheel brake |
| CN105151019A (en) * | 2015-09-09 | 2015-12-16 | 河南理工大学 | Spray cooling control system for automobile drum brake and control method for spray cooling control system |
| JP2016124406A (en) * | 2014-12-27 | 2016-07-11 | 日立オートモティブシステムズ株式会社 | Braking device |
| CN207955605U (en) * | 2018-01-10 | 2018-10-12 | 东风商用车有限公司 | Automatic cooling system of drum brake for vehicle |
-
2018
- 2018-01-10 CN CN201810022893.8A patent/CN108128290A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19807392A1 (en) * | 1997-03-05 | 1998-09-10 | Volkswagen Ag | Device for cooling of road vehicle brakes |
| JP2001122107A (en) * | 1999-10-22 | 2001-05-08 | Akebono Brake Ind Co Ltd | Brake fade alarm giving device |
| KR20040046366A (en) * | 2002-11-27 | 2004-06-05 | 현대자동차주식회사 | brake cooling system for automotive vehicles |
| EP1950111A2 (en) * | 2007-01-23 | 2008-07-30 | Faiveley Transport Italia S.r.l. | Process for assessing the temperature of the braking elements of a vehicle, in particular a railway vehicle |
| DE102012017600A1 (en) * | 2012-09-06 | 2014-03-06 | Volkswagen Aktiengesellschaft | Method for operating actuating device for cooling wheel brake of motor vehicle, involves selecting cooling air flow to satisfactory cooling air demand by wheel brake |
| JP2016124406A (en) * | 2014-12-27 | 2016-07-11 | 日立オートモティブシステムズ株式会社 | Braking device |
| CN105151019A (en) * | 2015-09-09 | 2015-12-16 | 河南理工大学 | Spray cooling control system for automobile drum brake and control method for spray cooling control system |
| CN207955605U (en) * | 2018-01-10 | 2018-10-12 | 东风商用车有限公司 | Automatic cooling system of drum brake for vehicle |
Non-Patent Citations (1)
| Title |
|---|
| 王强、龚利全等: "水冷式制动系统散热分析计算" * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111547020A (en) * | 2020-05-29 | 2020-08-18 | 江西昌河汽车有限责任公司 | Brake with automatic cooling function and control method thereof |
| CN111547020B (en) * | 2020-05-29 | 2021-03-09 | 江西昌河汽车有限责任公司 | Brake with automatic cooling function and control method thereof |
| CN114516316A (en) * | 2022-01-28 | 2022-05-20 | 三一专用汽车有限责任公司 | Automatic water spraying method, controller and system for vehicle hub and vehicle |
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Application publication date: 20180608 |