CN104442774A - Vacuum braking boosting system - Google Patents
Vacuum braking boosting system Download PDFInfo
- Publication number
- CN104442774A CN104442774A CN201410722310.4A CN201410722310A CN104442774A CN 104442774 A CN104442774 A CN 104442774A CN 201410722310 A CN201410722310 A CN 201410722310A CN 104442774 A CN104442774 A CN 104442774A
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- China
- Prior art keywords
- vacuum
- booster
- switch
- upper limit
- lower limit
- 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
- 230000000087 stabilizing effect Effects 0.000 claims description 7
- 238000007689 inspection Methods 0.000 claims description 6
- 239000003381 stabilizer Substances 0.000 abstract 2
- 230000000694 effects Effects 0.000 description 7
- 230000007812 deficiency Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007257 malfunction Effects 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
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
- B60T13/46—Vacuum systems
- B60T13/52—Vacuum systems indirect, i.e. vacuum booster units
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The invention relates to a vacuum braking boosting system, and belongs to the field of vacuum braking boosting systems. A lower limit vacuum switch is installed on a vacuum booster; an upper limit vacuum switch is installed on a vacuum tank; the upper limit vacuum switch, the lower limit vacuum switch and an electric vacuum pump alarm apparatus are respectively connected with a controller; the vacuum tank is connected with the vacuum booster; the electric vacuum pump is connected with the vacuum tank; an input voltage reverse-connection preventing circuit is connected with a power supply voltage stabilizer; the power supply voltage stabilizer is connected with a CPU (Central Processing Unit) microprocessor; the CPU microprocessor comprises a watchdog function module and an adjustable timer; a high-speed flow detecting control circuit is connected with a driving tube. The vacuum braking boosting system disclosed by the invention has the following advantages: the system is novel in structure, and high in control accuracy as the system can be started when the vacuum degree in the vacuum booster is insufficient, and further can be stopped when the vacuum degree is enough; the system can automatically give out an alarm to remind the driver, so as to improve the safety and the reliability of driving; meanwhile, the system can save the energy and prolong the service life.
Description
Technical field
The invention belongs to vacuum brake force aid system field, be applied to the vacuum brake force aid system of turbo-charging, diesel-engined vehicle, electronlmobil and hybrid vehicle vacuum booster.
Background technology
Electronlmobil does not have driving engine due to itself, so the vacuum required for electronlmobil vacuum booster must be produced by other system.Hybrid vehicle and part diesel-powered car in use, there will be the situation that degree of vacuum is inadequate in some cases, make vacuum booster cannot reach best power-assisted effect.Or when unexpected engine off, vacuum booster cannot continue the vacuum obtaining being provided by driving engine.Vacuum brake force aid system is by automobile storage battery for system provides power supply, and when the low vacuum in vacuum booster is in setting value, system starts as vacuum booster provides required vacuum; After in vacuum booster, vacuum reaches standard value, system stops.If after system once vacuumizes, degree of vacuum could not reach required value, and system can send warning automatically, reminds navigating mate system malfunctions.
In similar designs in the past, when the vacuum of vacuum brake force aid system in vacuum booster is lower than setting value, system starts and automatically stops after time delay a period of time.The degree of vacuum not requirement that can reach after system is started.Just there are two kinds of possibilities in this: one is after system has started compensation, the still out of reach requirement of the degree of vacuum in vacuum booster, and vacuum booster now cannot reach best power-assisted effect, thus affects car brakeing effect.And chaufeur do not know that the braking effect of vehicle has declined in this case, be easy to cause danger; Two is after system has started compensation, and the degree of vacuum in vacuum booster exceedes required value.So both cause the waste of the energy, again reduce the service life of vacuum booster.Owing to starting electric vacuum pump all overtime works at every turn, also reduce the life-span.
Summary of the invention
The invention provides a kind of vacuum brake force aid system, to require with the degree of vacuum out of reach solved in existing vacuum brake force aid system vacuum booster and degree of vacuum exceedes the problem of required value.
Technical scheme of the present invention is: lower limit vac switch is arranged on vacuum booster, upper limit vac switch is arranged on vacuum reservoir, upper limit vac switch, lower limit vac switch, electric vacuum pump 5 annunciator are connected with controller respectively, vacuum reservoir is connected with vacuum booster, and electric vacuum pump is connected with vacuum reservoir; Anti-input voltage connects circnit NOT and connects power supply voltage stabilizing, power supply voltage stabilizing connects CPU microprocessor, CPU microprocessor comprises watchdog function module, adjustable timing device, examines flow control circuit, driving tube at a high speed and is connected with CPU microprocessor respectively, and inspection flow control circuit is connected with driving tube at a high speed.
The invention has the advantages that: novel structure, not only can start when vacuum deficiency in vacuum booster, and can stop in time after vacuum reaches, control accuracy is high.With fault diagnosis model, when vacuum boost system could not by vacuum lifting to required value time, system can send warning automatically, remind navigating mate, thus improve the safe reliability of driving, also save the energy simultaneously, extend the work life of system, saved the energy, reduced cost.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is controller control principle drawing of the present invention;
In Fig. 1, vacuum reservoir 1, upper limit vac switch 2, vacuum booster 3, lower limit vac switch 4, electric vacuum pump 5, controller 6, annunciator 7, anti-input voltage connect circnit NOT I, power supply voltage stabilizing II, CPU microprocessor III, at a high speed inspection flow control circuit IV, driving tube V, watchdog function module III-1, adjustable timing device III-2.
Detailed description of the invention
Lower limit vac switch 4 is arranged on vacuum booster 3, upper limit vac switch 2 is arranged on vacuum reservoir 1, upper limit vac switch 2, lower limit vac switch 4, electric vacuum pump 5, annunciator 7 are connected with controller 6 respectively, vacuum reservoir 1 is connected with vacuum booster 3, and electric vacuum pump 5 is connected with vacuum reservoir 1; Anti-input voltage meets circnit NOT I and connects power supply voltage stabilizing II, power supply voltage stabilizing II connects CPU microprocessor III, CPU microprocessor III comprises watchdog function module III-1, adjustable timing device III-2, inspection flow control circuit IV, driving tube V are connected with CPU microprocessor III respectively at a high speed, and inspection flow control circuit IV is connected with driving tube V at a high speed.
This controller have employed the high speed inspection flow control circuit with load overload protection function and short-circuit protection function, can turn off the load current overruned, thus reach the object of protection controller in ten thousand/five-second period.Controller has automatically reset watchdog function, and this watchdog function object is to prevent just in case because the reasons such as superpower interference, abrupt change of voltage may cause microprocessor to crash in situation, can reach auto-reset function under house dog effect.Controller default setting starts electric vacuum pump 5s after lower limit alarm switch closure signal being detected, can adjust by 10s ~ 50s in actual use, can't accept pressure signal, controller also can carry out vacuum compensation by interval 10s startup vacuum pump, ensure the braking effect of vacuum booster, improve travel safety, same to alarm.
The present invention is the important component part of turbo-charging, diesel-engined vehicle, electronlmobil, hybrid vehicle safety system.Vehicle upon actuation, supposes do not have vacuum in vacuum booster, and both in vacuum booster, degree of vacuum was less than 50kPa.Or when vehicle normally uses, in vacuum booster, degree of vacuum is less than 50kPa.Now lower limit alarm switch closes, and controller starts electric vacuum pump, vacuumizes vacuum reservoir.At this moment the check valve that vacuum reservoir is connected with vacuum booster is also opened, and the degree of vacuum in vacuum booster is also constantly becoming large.If in 15s, the vacuum of vacuum reservoir reaches 75kPa, and upper limit vac switch is opened, and controller connects upper limit vac switch pin and changes, and controller controls electric vacuum pump to be stopped.In vacuum, when degree of vacuum in vacuum booster is more than 50kPa, lower limit vac switch is opened automatically, prepares for next time starts.If also do not opened more than 15s upper limit alarm switch, both controller did not detect that the pin connecting upper limit alarm switch changed, and explanation may exist leakage, and electric vacuum pump cannot by vacuum lifting to 75kPa, and controller starts annunciator, sends warning.As long as controller detects upper limit alarm switch opens signal during warning, report to the police and automatically close.When controller can't detect the signal of two alarm switches, controller also can carry out vacuum compensation by interval 10s startup electric vacuum pump, ensures the braking effect of vacuum booster, improves travel safety, same to alarm.
Claims (1)
1. a vacuum brake force aid system, it is characterized in that: lower limit vac switch is arranged on vacuum booster, upper limit vac switch is arranged on vacuum reservoir, upper limit vac switch, lower limit vac switch, electric vacuum pump annunciator are connected with controller respectively, vacuum reservoir is connected with vacuum booster, and electric vacuum pump is connected with vacuum reservoir; Anti-input voltage connects circnit NOT and connects power supply voltage stabilizing, power supply voltage stabilizing connects CPU microprocessor, CPU microprocessor comprises watchdog function module, adjustable timing device, examines flow control circuit, driving tube at a high speed and is connected with CPU microprocessor respectively, and inspection flow control circuit is connected with driving tube at a high speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410722310.4A CN104442774A (en) | 2014-12-03 | 2014-12-03 | Vacuum braking boosting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410722310.4A CN104442774A (en) | 2014-12-03 | 2014-12-03 | Vacuum braking boosting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104442774A true CN104442774A (en) | 2015-03-25 |
Family
ID=52889756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410722310.4A Pending CN104442774A (en) | 2014-12-03 | 2014-12-03 | Vacuum braking boosting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104442774A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110089754A1 (en) * | 2009-10-21 | 2011-04-21 | Sen Feng | Brake auxiliary system of electric car |
| CN102371984A (en) * | 2011-08-29 | 2012-03-14 | 温州大学 | Vacuum boosting device of electric vehicle |
| CN203005405U (en) * | 2012-12-25 | 2013-06-19 | 北京汽车新能源汽车有限公司 | Electric automotive vacuum-assisted braking system |
| EP2011707B1 (en) * | 2006-04-14 | 2013-08-07 | Waikei Huen | Vacuum brake booster system |
| CN203358568U (en) * | 2013-07-23 | 2013-12-25 | 安徽江淮汽车股份有限公司 | Vacuum boosting control system of electromobile |
| CN103693033A (en) * | 2012-09-27 | 2014-04-02 | 北汽福田汽车股份有限公司 | Vacuum boosting system, electric vehicle and vacuum boosting control method |
| CN204323316U (en) * | 2014-12-03 | 2015-05-13 | 吉林东光奥威汽车制动系统有限公司 | A kind of vacuum brake force aid system |
-
2014
- 2014-12-03 CN CN201410722310.4A patent/CN104442774A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2011707B1 (en) * | 2006-04-14 | 2013-08-07 | Waikei Huen | Vacuum brake booster system |
| US20110089754A1 (en) * | 2009-10-21 | 2011-04-21 | Sen Feng | Brake auxiliary system of electric car |
| CN102371984A (en) * | 2011-08-29 | 2012-03-14 | 温州大学 | Vacuum boosting device of electric vehicle |
| CN103693033A (en) * | 2012-09-27 | 2014-04-02 | 北汽福田汽车股份有限公司 | Vacuum boosting system, electric vehicle and vacuum boosting control method |
| CN203005405U (en) * | 2012-12-25 | 2013-06-19 | 北京汽车新能源汽车有限公司 | Electric automotive vacuum-assisted braking system |
| CN203358568U (en) * | 2013-07-23 | 2013-12-25 | 安徽江淮汽车股份有限公司 | Vacuum boosting control system of electromobile |
| CN204323316U (en) * | 2014-12-03 | 2015-05-13 | 吉林东光奥威汽车制动系统有限公司 | A kind of vacuum brake force aid system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150325 |