CN109733360B - Electronic vacuum pump control system and control method - Google Patents
Electronic vacuum pump control system and control method Download PDFInfo
- Publication number
- CN109733360B CN109733360B CN201811550870.0A CN201811550870A CN109733360B CN 109733360 B CN109733360 B CN 109733360B CN 201811550870 A CN201811550870 A CN 201811550870A CN 109733360 B CN109733360 B CN 109733360B
- Authority
- CN
- China
- Prior art keywords
- vacuum
- pressure sensor
- vacuum pump
- value
- controller
- 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.)
- Active
Links
Images
Landscapes
- Valves And Accessory Devices For Braking Systems (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention provides an electronic vacuum pump control system and a control method, wherein the control system comprises: the device comprises a vacuum pump, a power supply, an electromagnetic valve, a controller, an absolute pressure sensor, a relative pressure sensor, a vacuum booster, a one-way valve, a vacuum pipeline and a vacuum tank; the three end of solenoid valve is connected with the first end of vacuum pump, the positive pole of power and the first end of controller respectively, the negative pole of power is connected to the second end of vacuum pump, vacuum booster and vacuum tank are connected respectively to the second end and the third end of controller, be equipped with the pipeline between vacuum booster and the vacuum tank, absolute pressure sensor sets up on the vacuum tank, relative pressure sensor sets up on vacuum booster, the check valve sets up in the vacuum pipeline between vacuum booster and vacuum tank. The invention solves the technical problem that the starting and closing control of the vacuum pump at various altitudes cannot be carried out when one negative pressure sensor is adopted for control in the prior art.
Description
Technical Field
The invention relates to the field of automobiles, in particular to a control system and a control method for an electronic vacuum pump.
Background
With the popularization of new energy automobiles, pure electric automobiles, hybrid automobiles and the like are popularized in a large amount, and a vacuum power assisting system is changed from the traditional negative pressure power assisting of an engine to the negative pressure power assisting of an electronic vacuum pump.
The control method of most vehicle types of electronic vacuum pumps in the prior art comprises the following steps: and a negative pressure sensor is adopted for controlling a vacuum system, or an atmospheric pressure sensor and a negative pressure sensor are adopted for controlling.
The defects of the prior art scheme are as follows: when adopting a negative pressure sensor to control, can't carry out the beginning and the closing control of vacuum pump under various height above sea level, can lead to the vacuum pump to work for a long time when the car goes in plateau environment simultaneously, burn out vacuum pump and vacuum line, can't control according to atmospheric pressure after negative pressure sensor became invalid moreover. And adopt an atmospheric pressure sensor and a negative pressure sensor control, also can lead to unable using under various height above sea level when atmospheric pressure sensor loses efficacy, for example the problem of burning out vacuum pump and vacuum line appears or can't carry out vacuum pump on-off control according to the negative pressure after negative pressure sensor loses efficacy.
Disclosure of Invention
Based on the problems, the invention provides an electronic vacuum pump control system and a control method, which solve the technical problems that in the prior art, when a negative pressure sensor is used for control, the vacuum pump can not be started and closed at various altitudes, when an automobile runs in a plateau environment, the vacuum pump can work for a long time, the vacuum pump and a vacuum pipeline are burnt, and the control can not be carried out according to air pressure after the negative pressure sensor fails, and also solve the technical problem that when the atmospheric pressure sensor fails, the control can not be used at various altitudes due to the control of an atmospheric pressure sensor and the negative pressure sensor.
The invention provides an electronic vacuum pump control system, comprising:
the device comprises a vacuum pump, a power supply, an electromagnetic valve, a controller, an absolute pressure sensor, a relative pressure sensor, a vacuum booster, a one-way valve, a vacuum pipeline and a vacuum tank;
three ends of the electromagnetic valve are respectively connected with a first end of a vacuum pump, a positive electrode of a power supply and a first end of a controller, a second end of the vacuum pump is connected with a negative electrode of the power supply, a second end and a third end of the controller are respectively connected with a vacuum booster and a vacuum tank, a pipeline is arranged between the vacuum booster and the vacuum tank, an absolute pressure sensor is arranged on the vacuum tank, a relative pressure sensor is arranged on the vacuum booster, and a one-way valve is arranged in the vacuum pipeline between the vacuum booster and the vacuum tank;
when the pressure value in the vacuum booster is equal to the first starting value, the controller supplies power to the vacuum pump, and the vacuum pump pumps air from the vacuum tank and the vacuum cavity of the vacuum booster; when the pressure value in the vacuum booster is equal to the first closing value, the controller stops working.
In addition, when the controller acquires that the voltage value of the absolute pressure sensor is not in the preset range, the voltage value is 0 or the absolute pressure sensor is short-circuited, the controller controls the vacuum pump according to the pressure value detected by the relative pressure sensor, a preset second opening value and a preset second closing value.
In addition, when the pressure value detected by the relative pressure sensor is equal to the second opening value, the controller supplies power to the vacuum pump, and the vacuum pump exhausts the vacuum cavities of the vacuum tank and the booster; and when the pressure value detected by the relative pressure sensor is equal to the second closing value, the controller stops supplying power to the vacuum pump.
In addition, when the controller acquires that the voltage value of the relative pressure sensor is not in the preset range, the voltage value is 0 or the relative pressure sensor is short-circuited, the controller controls the vacuum pump according to the pressure value detected by the absolute pressure sensor, a preset third opening value and a preset third closing value.
In addition, when the pressure value detected by the absolute pressure sensor is equal to the third opening value, the controller supplies power to the vacuum pump, and the vacuum pump exhausts air from the vacuum cavity of the vacuum tank and the vacuum cavity of the booster; and when the pressure value detected by the absolute pressure sensor is equal to the third closing value, the controller stops supplying power to the vacuum pump.
In addition, the first opening value and the first closing value are obtained by different altitude calibration.
In addition, when the controller acquires that the absolute pressure sensor and the relative pressure sensor fail simultaneously, the controller continuously controls the on and off of the vacuum pump in a mode of working for a first time period and then stopping for a second time period.
The invention also provides a control method of the electronic vacuum pump, which comprises the following steps:
when the pressure value in the vacuum booster is equal to the first opening value, the controller supplies power to the vacuum pump, and the vacuum pump pumps air from the vacuum tank and the vacuum cavity of the booster; when the pressure value in the vacuum booster is equal to the first closing value, the controller stops working;
when the controller acquires that the voltage value of the absolute pressure sensor is not in the preset range, the voltage value is 0 or the absolute pressure sensor is short-circuited, the controller controls the vacuum pump according to the pressure value detected by the relative pressure sensor, a preset second opening value and a preset second closing value;
and when the controller acquires that the voltage value of the relative pressure sensor is not in the preset range, the voltage value is 0 or the relative pressure sensor is short-circuited, the controller controls the vacuum pump according to the pressure value detected by the absolute pressure sensor, a preset third opening value and a preset third closing value.
In addition, when the pressure value detected by the relative pressure sensor is equal to the second opening value, the controller supplies power to the vacuum pump, and the vacuum pump exhausts the vacuum cavities of the vacuum tank and the booster; and when the pressure value detected by the relative pressure sensor is equal to the second closing value, the controller stops supplying power to the vacuum pump.
In addition, when the pressure value detected by the absolute pressure sensor is equal to the third opening value, the controller supplies power to the vacuum pump, and the vacuum pump exhausts air from the vacuum cavity of the vacuum tank and the vacuum cavity of the booster; and when the pressure value detected by the absolute pressure sensor is equal to the third closing value, the controller stops supplying power to the vacuum pump.
Through adopting above-mentioned technical scheme, have following beneficial effect:
the invention solves the technical problems that the starting and closing control of the vacuum pump at various altitudes cannot be carried out when a negative pressure sensor is adopted for control in the prior art, the vacuum pump can work for a long time when an automobile runs in a plateau environment, the vacuum pump and a vacuum pipeline are burnt out, and the control according to air pressure cannot be carried out after the negative pressure sensor fails, and also solves the technical problem that the control by adopting an atmospheric pressure sensor and a negative pressure sensor can not be used at various altitudes when the atmospheric pressure sensor fails. The invention makes the absolute pressure sensor and the relative pressure sensor mutually backup and control, when one fails, the other can still collect data, so that the controller can more reasonably control the vacuum pump, the vacuum pump can not work for a long time, and the damage of the vacuum pump is avoided.
Drawings
FIG. 1 is a schematic diagram of an electronic vacuum pump control system provided by one embodiment of the present invention;
fig. 2 is a flowchart of a method for controlling an electronic vacuum pump according to an embodiment of the present invention.
Reference numerals:
1-vacuum pump 2-power supply 3-electromagnetic valve 4-controller 5-absolute pressure sensor 6-relative pressure sensor 7-vacuum booster 8-one-way valve 9-vacuum tank
Detailed Description
The present invention is described in further detail below with reference to specific embodiments and the attached drawings. It is intended that the present invention not be limited to the particular embodiments disclosed, but that the present invention be limited only by the appended claims.
Referring to fig. 1, the present invention provides an electronic vacuum pump control system, including:
the device comprises a vacuum pump 1, a power supply 2, an electromagnetic valve 3, a controller 4, an absolute pressure sensor 5, a relative pressure sensor 6, a vacuum booster 7, a one-way valve 8, a vacuum pipeline and a vacuum tank 9;
three ends of the electromagnetic valve 3 are respectively connected with a first end of the vacuum pump 1, a positive electrode of the power supply 2 and a first end of the controller 4, a second end of the vacuum pump 1 is connected with a negative electrode of the power supply 2, a second end and a third end of the controller 4 are respectively connected with the vacuum booster 7 and the vacuum tank 9, a pipeline is arranged between the vacuum booster 7 and the vacuum tank 9, the absolute pressure sensor 5 is arranged on the vacuum tank 9, the relative pressure sensor 6 is arranged on the vacuum booster 7, and the check valve 8 is arranged in the vacuum pipeline between the vacuum booster 7 and the vacuum tank 9;
when the pressure value in the vacuum booster 7 is equal to the first starting value, the controller 4 supplies power to the vacuum pump 1, and the vacuum pump 1 exhausts the vacuum tank 9 and the vacuum cavity of the vacuum booster 7; when the pressure value in the vacuum booster 7 is equal to the first shut-off value, the controller 4 stops operating.
In the present embodiment, the absolute pressure sensor 5 is disposed on the vacuum tank 9, and the relative pressure sensor 6 is disposed on the vacuum booster 7, so that the absolute pressure sensor 5 and the relative pressure sensor 6 are used in cooperation.
The absolute pressure sensor 5 monitors the air pressure value in the vacuum tank 9 and is marked as P5, the relative pressure sensor 6 monitors the negative pressure value in the vacuum booster 7 and is marked as P6, the atmospheric pressure P is the difference between P5 and P6, Pon1 is a first opening value, and Poff1 is a first closing value.
Pon1＝N1*P
Poff1＝N2*4
N1, N2 is determined according to the calibration verification result.
Under normal conditions, when P6 is equal to Pon1, the controller 4 supplies power to the vacuum pump 1, the vacuum pump 1 pumps air to the vacuum tank 9 and the vacuum cavity of the booster 7, when P6 is equal to Poff1, the controller 4 stops supplying power to the vacuum pump 1, and the controller 4 controls the supply or stop supplying power to the vacuum pump 1 by controlling an external relay to be opened and closed. The relay is arranged on the line between the controller 4 and the vacuum pump 1.
This embodiment has solved and has adopted a negative pressure sensor to control among the prior art, can't carry out the beginning and the closing control of vacuum pump under various altitude, can lead to the vacuum pump to work for a long time when the automobile goes in plateau environment, burn out vacuum pump and vacuum line, can't carry out the technical problem who controls according to atmospheric pressure after negative pressure sensor became invalid moreover, also solved and adopted the technical problem that can lead to can't using under various altitude when atmospheric pressure sensor became invalid that an atmospheric pressure sensor and a negative pressure sensor control lead to. This embodiment makes absolute pressure sensor 5, relative pressure sensor 6 each other be backup control, and when a became invalid, another still can data acquisition, makes controller 4 can more reasonable control vacuum pump, can not make the vacuum pump work for a long time, avoids the vacuum pump to damage.
In one embodiment, when the controller 4 acquires that the voltage value of the absolute pressure sensor 5 is not within the preset range, the voltage value is 0, or the absolute pressure sensor 5 is short-circuited, the controller 4 controls the vacuum pump 1 according to the pressure value detected by the relative pressure sensor 6, and a preset second opening value and a preset second closing value. The preset range is, for example, 0.5v to 4.5v, and when the controller acquires that the voltage value of the absolute pressure sensor 5 is not within the preset range, the voltage value is 0, or the absolute pressure sensor 5 is short-circuited, it indicates that the absolute pressure sensor 5 is failed, and at this time, the vacuum pump 1 needs to be controlled by the pressure value detected by the relative pressure sensor 6, the preset second opening value and the preset second closing value. The controller 4 is assisted to make a judgment through a preset second opening value and a second closing value, so that when the absolute pressure sensor 5 fails, the controller 4 can also make a correct judgment, wherein the second opening value and the second closing value are obtained through real vehicle calibration verification at different altitudes and can be generally applied to the altitude between 0 and 4800 m.
In one embodiment, when the pressure value detected by the relative pressure sensor 6 is equal to the second opening value, the controller 4 supplies power to the vacuum pump 1, and the vacuum pump 1 pumps air from the vacuum tank 9 and the vacuum cavity of the booster 7; when the pressure value detected by the relative pressure sensor 6 is equal to the second shut-off value, the controller 4 stops supplying power to the vacuum pump 1.
Specifically, the controller 4 determines whether the pressure value detected by the relative pressure sensor 6 is equal to the second opening value, and if so, the controller 4 supplies power to the vacuum pump 1, and if the pressure value detected by the relative pressure sensor 6 is equal to the second closing value, the controller 4 stops supplying power to the vacuum pump 1. The controller 4 accurately controls the vacuum pump 1 by comparing the pressure values detected by the relative pressure sensor 6 with the second opening value and the second closing value, respectively.
In one embodiment, when the controller 4 acquires that the voltage value of the relative pressure sensor 6 is not within the preset range, the voltage value is 0, or the relative pressure sensor 6 is short-circuited, the controller 4 controls the vacuum pump 1 according to the pressure value detected by the absolute pressure sensor 5 and a preset third opening value and a preset third closing value. The predetermined range is, for example, 0.5v to 4.5 v.
When the controller 4 acquires that the voltage value of the relative pressure sensor 6 is not within the preset range, the voltage value is 0 or the relative pressure sensor 6 is short-circuited, it indicates that the relative pressure sensor 6 fails, and at this time, the vacuum pump 1 is controlled according to the pressure value detected by the absolute pressure sensor 5, the preset third opening value and the preset third closing value, so that the controller 1 can reasonably control the vacuum pump 1, and the vacuum pump cannot be damaged.
In one embodiment, when the pressure value detected by the absolute pressure sensor 5 is equal to the third opening value, the controller 4 supplies power to the vacuum pump 1, and the vacuum pump 1 pumps air to the vacuum tank 9 and the vacuum cavity of the booster 7; when the pressure value detected by the absolute pressure sensor 5 is equal to the third shut-off value, the controller 4 stops supplying power to the vacuum pump 1.
Specifically, the controller 4 determines whether the pressure value detected by the absolute pressure sensor 5 is equal to the third opening value, if so, the controller 4 supplies power to the vacuum pump 1, and if the pressure value detected by the absolute pressure sensor 5 is equal to the third closing value, the controller 4 stops supplying power to the vacuum pump 1. By providing the third opening value and the third closing value, the controller 4 is able to accurately control the vacuum pump 1 also when the relative pressure sensor 6 fails. The third opening value and the third closing value are obtained through the real vehicle calibration verification of different altitudes and can be generally applied to the altitudes of 0-4800 m.
In one embodiment, the first on value and the first off value are calibrated by different altitudes. Examples are: the first on value is-500 mabr, the first off value is-700 mabr, the second on value is +400mabr, the second off value is +300mar, the third on value is-400 mbar and the third off value is-500 mbar.
In one embodiment, when the controller 4 acquires that the absolute pressure sensor 5 and the relative pressure sensor 6 are simultaneously disabled, the controller 4 continuously controls the vacuum pump 1 to be turned on and off in a manner of operating for a first period of time and then stopping for a second period of time. The first time period is, for example, 5s and the second time period is, for example, 4 s.
In this case, the control is not performed according to the absolute pressure sensor 5 and the relative pressure sensor 6, but the control is performed in a mode that the vacuum pump 1 is powered for a period of time and then is powered off for a period of time, and meanwhile, a prompt and an alarm are sent to the automobile.
Referring to fig. 1, preferably, the present invention further provides an electronic vacuum pump control system, including:
the device comprises a vacuum pump 1, a power supply 2, an electromagnetic valve 3, a controller 4, an absolute pressure sensor 5, a relative pressure sensor 6, a vacuum booster 7, a one-way valve 8 and a vacuum tank 9;
three ends of the electromagnetic valve 3 are respectively connected with a first end of the vacuum pump 1, a positive electrode of the power supply 2 and a first end of the controller 4, a second end of the vacuum pump 1 is connected with a negative electrode of the power supply 2, a second end and a third end of the controller 4 are respectively connected with the vacuum booster 7 and the vacuum tank 9, a pipeline is arranged between the vacuum booster 7 and the vacuum tank 9, the absolute pressure sensor 5 is arranged on the vacuum tank 9, the relative pressure sensor 6 is arranged on the vacuum booster 7, and the check valve 8 is arranged in the pipeline between the vacuum booster 7 and the vacuum tank 9;
when the pressure value in the vacuum booster 7 is equal to the first starting value, the controller 4 supplies power to the vacuum pump 1, and the vacuum pump 1 pumps air from the vacuum tank 9 and the vacuum cavity of the booster 7; when the pressure value in the vacuum booster 7 is equal to the first shut-off value, the controller 4 stops operating.
When the controller 4 acquires that the voltage value of the absolute pressure sensor 5 is not within the preset range, the voltage value is 0 or the absolute pressure sensor 5 is short-circuited, the controller 4 controls the vacuum pump 1 according to the pressure value detected by the relative pressure sensor 6, a preset second opening value and a preset second closing value. Specifically, when the pressure value detected by the relative pressure sensor 6 is equal to the second opening value, the controller 4 supplies power to the vacuum pump 1, and the vacuum pump 1 evacuates the vacuum chambers of the vacuum tank 9 and the booster 7; when the pressure value detected by the relative pressure sensor 6 is equal to the second shut-off value, the controller 4 stops supplying power to the vacuum pump 1.
When the controller 4 acquires that the voltage value of the relative pressure sensor 6 is not within the preset range, the voltage value is 0 or the relative pressure sensor 6 is short-circuited, the controller 4 controls the vacuum pump 1 according to the pressure value detected by the absolute pressure sensor 5, a preset third opening value and a preset third closing value. Specifically, when the pressure value detected by the absolute pressure sensor 5 is equal to the third opening value, the controller 4 supplies power to the vacuum pump 1, and the vacuum pump 1 evacuates the vacuum chambers of the vacuum tank 9 and the booster 7; when the pressure value detected by the absolute pressure sensor 5 is equal to the third shut-off value, the controller 4 stops supplying power to the vacuum pump 1.
When the controller 4 acquires that the absolute pressure sensor 5 and the relative pressure sensor 6 are simultaneously failed, the controller 4 continuously controls the on and off of the vacuum pump 1 in a mode of working for a first time period and then stopping for a second time period. The first opening value, the first closing value, the second opening value, the second closing value, the third opening value and the third closing value are obtained through calibration of different altitudes.
The embodiment enables the controller 1 to accurately control the vacuum pump 1 under any condition, so that the vacuum pump 1 is not easy to damage, and the service life of the vacuum pump 1 is prolonged.
Referring to fig. 1 to 2, the present invention provides a method for controlling an electronic vacuum pump, including:
when the pressure value in the vacuum booster 7 is equal to the first starting value, the controller 4 supplies power to the vacuum pump 1, and the vacuum pump 1 pumps air from the vacuum tank 9 and the vacuum cavity of the booster 7; when the pressure value in the vacuum booster 7 is equal to the first closing value, the controller 4 stops working;
when the controller 4 acquires that the voltage value of the absolute pressure sensor 5 is not in the preset range, the voltage value is 0 or the absolute pressure sensor 5 is short-circuited, the controller 4 controls the vacuum pump 1 according to the pressure value detected by the relative pressure sensor 6 and a preset second opening value and a preset second closing value;
when the controller 4 acquires that the voltage value of the relative pressure sensor 6 is not within the preset range, the voltage value is 0 or the relative pressure sensor 6 is short-circuited, the controller 4 controls the vacuum pump 1 according to the pressure value detected by the absolute pressure sensor 5, a preset third opening value and a preset third closing value.
Alternatively, when the controller 4 acquires that the absolute pressure sensor 5 and the relative pressure sensor 6 are simultaneously disabled, the controller 4 continuously controls the opening and closing of the vacuum pump 1 in a manner of operating for a first period of time and then stopping for a second period of time. The first opening value, the first closing value, the second opening value, the second closing value, the third opening value and the third closing value are obtained through calibration of different altitudes.
This embodiment has solved and has adopted a negative pressure sensor to control among the prior art, can't carry out the beginning and the closing control of vacuum pump under various altitude, can lead to the vacuum pump to work for a long time when the automobile goes in plateau environment, burn out vacuum pump and vacuum line, can't carry out the technical problem who controls according to atmospheric pressure after negative pressure sensor became invalid moreover, also solved and adopted the technical problem that can lead to can't using under various altitude when atmospheric pressure sensor became invalid that an atmospheric pressure sensor and a negative pressure sensor control lead to. This embodiment makes absolute pressure sensor 5, relative pressure sensor 6 each other be backup control, and when a became invalid, another still can data acquisition, makes controller 4 can more reasonable control vacuum pump, can not make the vacuum pump work for a long time, avoids the vacuum pump to damage.
In one embodiment, when the pressure value detected by the relative pressure sensor 6 is equal to the second opening value, the controller 4 supplies power to the vacuum pump 1, and the vacuum pump 1 pumps air from the vacuum tank 9 and the vacuum cavity of the booster 7; when the pressure value detected by the relative pressure sensor 6 is equal to the second shut-off value, the controller 4 stops supplying power to the vacuum pump 1.
In one embodiment, when the pressure value detected by the absolute pressure sensor 5 is equal to the third opening value, the controller 4 supplies power to the vacuum pump 1, and the vacuum pump 1 pumps air to the vacuum tank 9 and the vacuum cavity of the booster 7; when the pressure value detected by the absolute pressure sensor 5 is equal to the third shut-off value, the controller 4 stops supplying power to the vacuum pump 1.
By providing the calibrated second on value, third on value, second off value and third off value, the controller 4 is enabled to continue to accurately control the vacuum pump 1. The present embodiment enables the controller 4 to normally control the switching of the vacuum pump 1 when either one of the absolute pressure sensor 5 and the relative pressure sensor 6 fails.
The foregoing is considered as illustrative only of the principles and preferred embodiments of the invention. It should be noted that, for those skilled in the art, several other modifications can be made on the basis of the principle of the present invention, and the protection scope of the present invention should be regarded.
Claims (6)
1. An electronic vacuum pump control system, comprising:
the device comprises a vacuum pump, a power supply, an electromagnetic valve, a controller, an absolute pressure sensor, a relative pressure sensor, a vacuum booster, a one-way valve, a vacuum pipeline and a vacuum tank;
three ends of the electromagnetic valve are respectively connected with a first end of a vacuum pump, a positive electrode of a power supply and a first end of a controller, a second end of the vacuum pump is connected with a negative electrode of the power supply, a second end and a third end of the controller are respectively connected with a vacuum booster and a vacuum tank, a pipeline is arranged between the vacuum booster and the vacuum tank, an absolute pressure sensor is arranged on the vacuum tank, a relative pressure sensor is arranged on the vacuum booster, and a one-way valve is arranged in the vacuum pipeline between the vacuum booster and the vacuum tank;
when the pressure value in the vacuum booster is equal to the first starting value, the controller supplies power to the vacuum pump, and the vacuum pump pumps air from the vacuum tank and the vacuum cavity of the vacuum booster; when the pressure value in the vacuum booster is equal to the first closing value, the controller stops working;
when the controller acquires that the voltage value of the absolute pressure sensor is not in the preset range, the voltage value is 0 or the absolute pressure sensor is short-circuited, the controller controls the vacuum pump according to the pressure value detected by the relative pressure sensor, a preset second opening value and a preset second closing value;
when the pressure value detected by the relative pressure sensor is equal to the second opening value, the controller supplies power to the vacuum pump, and the vacuum pump exhausts the vacuum cavity of the vacuum tank and the vacuum cavity of the booster; when the pressure value detected by the relative pressure sensor is equal to the second closing value, the controller stops supplying power to the vacuum pump;
when the controller acquires that the absolute pressure sensor and the relative pressure sensor fail simultaneously, the controller continuously controls the vacuum pump to be started and closed in a mode of working for a first time period and then stopping for a second time period.
2. The electronic vacuum pump control system of claim 1,
and when the controller acquires that the voltage value of the relative pressure sensor is not in the preset range, the voltage value is 0 or the relative pressure sensor is short-circuited, the controller controls the vacuum pump according to the pressure value detected by the absolute pressure sensor, a preset third opening value and a preset third closing value.
3. The electronic vacuum pump control system of claim 2,
when the pressure value detected by the absolute pressure sensor is equal to the third opening value, the controller supplies power to the vacuum pump, and the vacuum pump exhausts the vacuum cavity of the vacuum tank and the booster; and when the pressure value detected by the absolute pressure sensor is equal to the third closing value, the controller stops supplying power to the vacuum pump.
4. The electronic vacuum pump control system of claim 1,
the first opening value and the first closing value are obtained by calibrating at different altitudes.
5. A method of controlling an electronic vacuum pump, comprising:
when the pressure value in the vacuum booster is equal to the first opening value, the controller supplies power to the vacuum pump, and the vacuum pump pumps air from the vacuum tank and the vacuum cavity of the booster; when the pressure value in the vacuum booster is equal to the first closing value, the controller stops working;
when the controller acquires that the voltage value of the absolute pressure sensor is not in the preset range, the voltage value is 0 or the absolute pressure sensor is short-circuited, the controller controls the vacuum pump according to the pressure value detected by the relative pressure sensor, a preset second opening value and a preset second closing value;
when the controller acquires that the voltage value of the relative pressure sensor is not in the preset range, the voltage value is 0 or the relative pressure sensor is short-circuited, the controller controls the vacuum pump according to the pressure value detected by the absolute pressure sensor, a preset third opening value and a preset third closing value;
when the pressure value detected by the relative pressure sensor is equal to the second opening value, the controller supplies power to the vacuum pump, and the vacuum pump exhausts the vacuum cavity of the vacuum tank and the vacuum cavity of the booster; when the pressure value detected by the relative pressure sensor is equal to the second closing value, the controller stops supplying power to the vacuum pump;
when the controller acquires that the absolute pressure sensor and the relative pressure sensor fail simultaneously, the controller continuously controls the vacuum pump to be started and closed in a mode of working for a first time period and then stopping for a second time period.
6. The control method of an electronic vacuum pump according to claim 5,
when the pressure value detected by the absolute pressure sensor is equal to the third opening value, the controller supplies power to the vacuum pump, and the vacuum pump exhausts the vacuum cavity of the vacuum tank and the booster; and when the pressure value detected by the absolute pressure sensor is equal to the third closing value, the controller stops supplying power to the vacuum pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811550870.0A CN109733360B (en) | 2018-12-18 | 2018-12-18 | Electronic vacuum pump control system and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811550870.0A CN109733360B (en) | 2018-12-18 | 2018-12-18 | Electronic vacuum pump control system and control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109733360A CN109733360A (en) | 2019-05-10 |
| CN109733360B true CN109733360B (en) | 2021-01-01 |
Family
ID=66360482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811550870.0A Active CN109733360B (en) | 2018-12-18 | 2018-12-18 | Electronic vacuum pump control system and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109733360B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109849884B (en) * | 2019-02-22 | 2020-12-18 | 威马智慧出行科技（上海）有限公司 | Automobile electronic vacuum pump control method and electronic equipment |
| CN112519738B (en) * | 2019-09-18 | 2022-04-26 | 广州汽车集团股份有限公司 | Vacuum-assisted brake system, brake control method, and brake control apparatus |
| CN112757181A (en) * | 2019-10-21 | 2021-05-07 | 富鼎电子科技(嘉善)有限公司 | Adsorption control device and product adsorption device |
| CN111257596B (en) * | 2020-02-25 | 2021-09-14 | 西南交通大学 | Scanning probe microscope narrow and small experiment chamber environment atmosphere accurate control device |
| CN114620018B (en) * | 2020-12-14 | 2023-04-28 | 威马智慧出行科技(上海)股份有限公司 | Vacuum pump control method, system, storage medium and electronic equipment |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015057334A (en) * | 2013-09-16 | 2015-03-26 | 愛三工業株式会社 | Brake system control method |
| JP2015058721A (en) * | 2013-09-17 | 2015-03-30 | 愛三工業株式会社 | Brake system control method |
| CN203854654U (en) * | 2014-05-12 | 2014-10-01 | 广汽菲亚特汽车有限公司 | Vacuum pump control system for automobile |
| CN104842987B (en) * | 2015-04-01 | 2018-09-11 | 北京新能源汽车股份有限公司 | The vacuum boost system and its pressure measurement method of electric vehicle |
| CN105353691B (en) * | 2015-12-07 | 2018-05-25 | 北京新能源汽车股份有限公司 | Control circuit, the control method and device of the electric vacuum pump of electric vehicle |
| CN205469032U (en) * | 2016-01-14 | 2016-08-17 | 重庆长安汽车股份有限公司 | Pure electric vehicles's vacuum servo auxiliary system |
-
2018
- 2018-12-18 CN CN201811550870.0A patent/CN109733360B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109733360A (en) | 2019-05-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109733360B (en) | Electronic vacuum pump control system and control method | |
| EP2949022B1 (en) | Charging indicator | |
| CN102369621B (en) | Fuel cell system, control method for the fuel cell system, and electric vehicle equipped with the fuel cell system | |
| GB2445447A (en) | A method and system for providing brake boost in a hybrid moto vehicle | |
| US9945341B2 (en) | Negative pressure abnormality detection apparatus, and control apparatus for internal combustion engine | |
| JP2002302031A (en) | Brake device for vehicle | |
| CN102379061B (en) | Fuel cell system, and electric vehicle equipped with the fuel cell system | |
| CN102369623B (en) | Fuel cell system, control method for the fuel cell system, and electric vehicle equipped with the fuel cell system | |
| US20160121750A1 (en) | Method for controlling a voltage source for charging a battery of a motor vehicle | |
| US8589008B2 (en) | Electric vehicle | |
| CN109849884B (en) | Automobile electronic vacuum pump control method and electronic equipment | |
| US10350992B2 (en) | Method for controlling a pressure inside a fuel tank system | |
| US20160076495A1 (en) | System for supplying fuel to an engine | |
| CN109383476B (en) | Brake apparatus and method for providing backup control for ECU by booster control unit | |
| US20120015267A1 (en) | Fuel cell system, control method for the fuel cell system, and electric vehicle equipped with the fuel cell system | |
| US9272595B2 (en) | Controlling a compressor for air suspension of electric vehicle | |
| CN105275588B (en) | Method of the control for the air inlet control system of engine | |
| CN108099885B (en) | Vacuum degree control method and system suitable for hybrid power braking | |
| CN210258175U (en) | Auxiliary power source system of wrecker and wrecker | |
| GB2510126A (en) | Indicating charging status of electric vehicle by altering height of suspension | |
| US20200266467A1 (en) | Fuel cell system and control method of the same | |
| KR101637277B1 (en) | Apparatus and method for variable valve of e-4wd hybrid vehicle | |
| KR20140035030A (en) | Electric oil pump control method and device thereof in hybrid automatic transmission | |
| JP6257169B2 (en) | Control unit used for electric booster and electric booster | |
| CN114750738B (en) | Control method and device for vacuum pump of braking system and vehicle braking system |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20230815 Granted publication date: 20210101 |