CN204323316U - A kind of vacuum brake force aid system - Google Patents
A kind of vacuum brake force aid system Download PDFInfo
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- CN204323316U CN204323316U CN201420747558.1U CN201420747558U CN204323316U CN 204323316 U CN204323316 U CN 204323316U CN 201420747558 U CN201420747558 U CN 201420747558U CN 204323316 U CN204323316 U CN 204323316U
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- vacuum
- vac switch
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Abstract
The utility model relates to a kind of vacuum brake force aid system, belongs to vacuum brake force aid system field.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, and 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, and power supply voltage stabilizing connects CPU microprocessor, and CPU microprocessor comprises watchdog function module, adjustable timing device, and inspection flow control circuit is connected with driving tube at a high speed.The utility model has the advantage of: novel structure, not only can start when vacuum deficiency in vacuum booster, and can stop in time after vacuum reaches, control accuracy is high.System can send warning automatically, reminds navigating mate, thus improves the safe reliability of driving, also save the energy simultaneously, extend the work life of system.
Description
Technical field
The utility model belongs to vacuum brake force aid system field, is 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 utility model provides a kind of vacuum brake force aid system, requires and degree of vacuum exceedes the problem of required value with the degree of vacuum out of reach solved in existing vacuum brake force aid system vacuum booster.
The technical solution of the utility model 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 utility model has the advantage of: 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 utility model;
Fig. 2 is controller control principle drawing of the present utility model;
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 utility model 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 |
|---|---|---|---|
| CN201420747558.1U CN204323316U (en) | 2014-12-03 | 2014-12-03 | A kind of vacuum brake force aid system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420747558.1U CN204323316U (en) | 2014-12-03 | 2014-12-03 | A kind of vacuum brake force aid system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204323316U true CN204323316U (en) | 2015-05-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420747558.1U Active CN204323316U (en) | 2014-12-03 | 2014-12-03 | A kind of vacuum brake force aid system |
Country Status (1)
| Country | Link |
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| CN (1) | CN204323316U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104442774A (en) * | 2014-12-03 | 2015-03-25 | 吉林东光奥威汽车制动系统有限公司 | Vacuum braking boosting system |
-
2014
- 2014-12-03 CN CN201420747558.1U patent/CN204323316U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104442774A (en) * | 2014-12-03 | 2015-03-25 | 吉林东光奥威汽车制动系统有限公司 | Vacuum braking boosting system |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |