CN111287952A - Passenger car closed air pump performance test system and test method - Google Patents
Passenger car closed air pump performance test system and test method Download PDFInfo
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- CN111287952A CN111287952A CN202010113502.0A CN202010113502A CN111287952A CN 111287952 A CN111287952 A CN 111287952A CN 202010113502 A CN202010113502 A CN 202010113502A CN 111287952 A CN111287952 A CN 111287952A
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- air pump
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
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Abstract
The invention belongs to the field of closed air pumps of passenger vehicles, and particularly relates to a performance test system and a performance test method for a closed air pump of a passenger vehicle. The system is different from the detection of a conventional closed air pump, and can comprehensively test each electromagnetic valve, each motor and each compression device by detecting the running current and the running air pressure, and give out a test result, thereby greatly improving the test efficiency.
Description
Technical Field
The invention belongs to the field of closed air pumps of passenger vehicles, and particularly relates to a performance test system and a performance test method for a closed air pump of a passenger vehicle.
Background
The utilization rate of the air suspension system on heavy-duty trucks exceeds 80%, the air suspension system is adopted 100% on high-speed passenger cars and luxury city passenger cars, and partial cars are also provided with the air suspension system. A high quality SUV should have both the comfort of a car and the ride-through characteristics of an off-road vehicle, and an air suspension system is the best choice for achieving this goal. The air suspension mainly comprises a control computer, a closed air pump, a pressure storage tank, pneumatic front and rear shock absorbers, an air distributor and the like.
The closed air pump is the most important part of the air suspension and mainly plays a role in pumping the air in the pressure storage tank into the air spring. When the air spring needs to be inflated, the closed air pump needs to pump air rapidly to enable the air spring to reach the target pressure. Therefore, the data such as the reaction speed, the response time and the like of the closed air pump can be qualified after meeting the standard.
How to efficiently and accurately detect various performance indexes of a closed air pump is a problem to be solved urgently in the prior art.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a closed air pump test system for a passenger car, and the system is used for testing. The system tests the performance of the air pump by simulating the condition of the air pump under the operating condition of the automobile, is different from the detection of a conventional closed air pump, comprehensively tests each electromagnetic valve, each motor and each compression device by detecting the operating current and the operating air pressure, and provides a test result, thereby greatly improving the test efficiency.
In order to achieve the purpose, the specific technical scheme of the invention is as follows:
a closed air pump performance test system for a passenger car comprises a computer, a control module and a power supply module; the controller is electrically connected with the computer;
the control module comprises the following control loops:
the controller is electrically connected with the power supply module to form a closed air pump power-on control loop;
the power supply module is electrically connected with the closed air pump, a current sensor is arranged on a connecting wire, and the current sensor is electrically connected with the control module to form a current data acquisition control loop;
the controller is connected with an R electromagnetic valve of the closed air pump to form an R air path exhaust control loop of the closed air pump;
the controller is connected with a P electromagnetic valve of the closed air pump to form a P air path exhaust control loop of the closed air pump;
the closed air pump P air path and the closed air pump R air path are both provided with an air pressure sensor, and the air pressure sensors are electrically connected with the controller to form an air pressure data acquisition control loop;
a closed air pump performance test method for a passenger car comprises the following specific steps:
1) setting a current qualified range A1-A2, an air pressure qualified range P1-P2, and a time T1 of reaching a specified pressure P3 to allow a pressure drop P4;
2) the controller controls the power supply to be connected with the closed air pump to supply power to the closed air pump so as to start the inflation process of the closed air pump;
3) the controller controls the quick connector to be connected with the R electromagnetic valve and the R gas outlet pipeline of the closed air pump so as to control the exhaust process of the R gas circuit of the closed air pump;
4) data AR collected by the current sensor is transmitted to the controller, and the controller transmits the data AR to the computer to form a time/current curve; the data PR acquired by the air pressure sensor is transmitted to the controller, and the controller transmits the data PR to the computer to form a time/air pressure curve;
5) judging and processing the acquired data AR and PR by the computer to obtain a conclusion whether the data are qualified or not;
6) the controller controls the quick connector to be connected with the P electromagnetic valve and a P gas outlet pipeline of the closed air pump so as to control the gas exhaust process of a P gas path of the closed air pump;
7) the data AP collected by the current sensor is transmitted to the controller, and the controller transmits the data AP to the computer; the data PP collected by the air pressure sensor is transmitted to the controller, and the controller transmits the data PP to the computer;
8) judging and processing the acquired data AP and PP by the computer to obtain a conclusion whether the data AP and PP are qualified or not;
in the step 5), the computer judges and processes the acquired data AR and PR to obtain a conclusion of qualification or not, and the method specifically comprises the following steps:
when the AR is in the range of A1-A2, the AR is qualified, otherwise, the AR is not qualified;
when PR is in the range of P1-P2, the PR is qualified, otherwise, the PR is not qualified;
when the time of reaching the specified pressure P3 is less than T1, the product is qualified, otherwise, the product is not qualified;
when the real-time pressure drop is smaller than the allowable pressure drop P4, the test is qualified, otherwise, the test is not qualified; the real-time pressure drop is the pressure drop within a specified time, reflecting the air tightness of the air pump.
In the step 8), the computer judges and processes the acquired data AP and PP to obtain a conclusion of qualification or not, which is specifically as follows:
when the AP is in A1-A2, the AP is qualified, otherwise, the AP is not qualified;
when the PP is in the range of P1-P2, the PP is qualified, otherwise, the PP is unqualified;
when the time of reaching the specified pressure P3 is less than T1, the product is qualified, otherwise, the product is not qualified;
when the real-time pressure drop is smaller than the allowable pressure drop P4, the test is qualified, otherwise, the test is not qualified;
the closed air pump test system for the passenger car respectively tests the performances of air tightness, inflating capacity, power and the like of the R gas circuit and the P gas circuit under the operating condition. The maximum pressure test is carried out, the pumping capacity of the pump is reflected, the power of the pump is evaluated by testing the maximum current, and the air tightness of the air pump is evaluated by testing the real-time pressure drop.
Drawings
FIG. 1 is a schematic diagram of the present invention;
Detailed Description
The above-mentioned aspects of the present invention will be further described in detail by the following embodiments in the form of examples for better understanding of the technical solutions of the present invention, but it should not be construed that the scope of the above-mentioned subject matter of the present invention is limited to the following examples. All the technologies realized based on the above contents of the present invention belong to the scope of the present invention.
Example 1
A closed air pump performance test system for a passenger car comprises a computer, a control module and a power supply module; the controller is electrically connected with the computer;
the control module comprises the following control loops:
the controller is electrically connected with the power supply module to form a closed air pump power-on control loop;
the power supply module is electrically connected with the closed air pump, a current sensor is arranged on a connecting wire, and the current sensor is electrically connected with the control module to form a current data acquisition control loop;
the controller is connected with an R electromagnetic valve of the closed air pump to form an R air path exhaust control loop of the closed air pump;
the controller is connected with a P electromagnetic valve of the closed air pump to form a P air path exhaust control loop of the closed air pump;
the closed air pump P air path and the closed air pump R air path are both provided with an air pressure sensor, and the air pressure sensors are electrically connected with the controller to form an air pressure data acquisition control loop;
a closed air pump performance test method for a passenger car comprises the following specific steps:
1) setting a current qualified range A1-A2, an air pressure qualified range P1-P2, and a time T1 of reaching a specified pressure P3 to allow a pressure drop P4;
2) the controller controls the power supply to be connected with the closed air pump to supply power to the closed air pump so as to start the inflation process of the closed air pump;
3) the controller controls the quick connector to be connected with the R electromagnetic valve and the R gas outlet pipeline of the closed air pump so as to control the exhaust process of the R gas circuit of the closed air pump;
4) data AR collected by the current sensor is transmitted to the controller, and the controller transmits the data AR to the computer to form a time/current curve; the data PR acquired by the air pressure sensor is transmitted to the controller, and the controller transmits the data PR to the computer to form a time/air pressure curve;
5) judging and processing the acquired data AR and PR by the computer to obtain a conclusion whether the data are qualified or not;
6) the controller controls the quick connector to be connected with the P electromagnetic valve and a P gas outlet pipeline of the closed air pump so as to control the gas exhaust process of a P gas path of the closed air pump;
7) the data AP collected by the current sensor is transmitted to the controller, and the controller transmits the data AP to the computer; the data PP collected by the air pressure sensor is transmitted to the controller, and the controller transmits the data PP to the computer;
8) judging and processing the acquired data AP and PP by the computer to obtain a conclusion whether the data AP and PP are qualified or not;
in the step 5), the computer judges and processes the acquired data AR and PR to obtain a conclusion of qualification or not, and the method specifically comprises the following steps:
when the AR is in the range of A1-A2, the AR is qualified, otherwise, the AR is not qualified;
when PR is in the range of P1-P2, the PR is qualified, otherwise, the PR is not qualified;
when the time of reaching the specified pressure P3 is less than T1, the product is qualified, otherwise, the product is not qualified;
when the real-time pressure drop is smaller than the allowable pressure drop P4, the test is qualified, otherwise, the test is not qualified; the real-time pressure drop is the pressure drop within a specified time, reflecting the air tightness of the air pump.
In the step 8), the computer judges and processes the acquired data AP and PP to obtain a conclusion of qualification or not, which is specifically as follows:
when the AP is in A1-A2, the AP is qualified, otherwise, the AP is not qualified;
when the PP is in the range of P1-P2, the PP is qualified, otherwise, the PP is unqualified;
when the time of reaching the specified pressure P3 is less than T1, the product is qualified, otherwise, the product is not qualified;
when the real-time pressure drop is less than the allowable pressure drop P4, the test is passed, otherwise, the test is failed.
Example 2
A closed air pump performance test method for a passenger car comprises the following specific steps:
1) setting a qualified current range of 15-40A, a qualified air pressure range of 150-303 psi, and a time of reaching a specified pressure of 120psi for 13s, wherein the pressure is allowed to drop by 20 psi;
2) the controller controls the power supply to be connected with the closed air pump to supply power to the closed air pump so as to start the inflation process of the closed air pump;
3) the controller controls the quick connector to be connected with the R electromagnetic valve and the R gas outlet pipeline of the closed air pump so as to control the exhaust process of the R gas circuit of the closed air pump;
4) data AR collected by the current sensor is transmitted to the controller, and the controller transmits the data AR to the computer to form a time/current curve; the data PR acquired by the air pressure sensor is transmitted to the controller, and the controller transmits the data PR to the computer to form a time/air pressure curve;
the results show a pressure arrival time of 4.21s, a maximum pressure of 251.69Psi, a maximum current of 16.93A, and a real-time pressure drop of 1.29Psi, which is acceptable.
6) The controller controls the quick connector to be connected with the P electromagnetic valve and a P gas outlet pipeline of the closed air pump so as to control the gas exhaust process of a P gas path of the closed air pump;
7) the data AP collected by the current sensor is transmitted to the controller, and the controller transmits the data AP to the computer; the data PP collected by the air pressure sensor is transmitted to the controller, and the controller transmits the data PP to the computer;
8) judging and processing the acquired data AP and PP by the computer to obtain a conclusion whether the data AP and PP are qualified or not;
the results show that the pressure reached 4.19s, the maximum pressure 261.34Psi, the maximum current 26.33A, and the real-time pressure drop 1.31Psi, pass.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (4)
1. A closed air pump performance test system for a passenger car is characterized by comprising a computer, a control module and a power supply module; the controller is electrically connected with the computer;
the control module comprises the following control loops:
the controller is electrically connected with the power supply module to form a closed air pump power-on control loop;
the power supply module is electrically connected with the closed air pump, a current sensor is arranged on a connecting wire, and the current sensor is electrically connected with the control module to form a current data acquisition control loop;
the controller is connected with an R electromagnetic valve of the closed air pump to form an R air path exhaust control loop of the closed air pump;
the controller is connected with a P electromagnetic valve of the closed air pump to form a P air path exhaust control loop of the closed air pump;
and the closed air pump P air path and the closed air pump R air path are both provided with air pressure sensors, and the air pressure sensors are electrically connected with the controller to form an air pressure data acquisition control loop.
2. A method for testing the performance of a closed air pump by using the closed air pump performance testing system of a passenger car as claimed in claim 1 comprises the following specific steps:
1) setting a current qualified range A1-A2, an air pressure qualified range P1-P2, and a time T1 of reaching a specified pressure P3 to allow a pressure drop P4;
2) the controller controls the power supply to be connected with the closed air pump to supply power to the closed air pump so as to start the inflation process of the closed air pump;
3) the controller controls to open the R electromagnetic valve and is communicated with the R gas path of the closed air pump to exhaust;
4) data AR collected by the current sensor is transmitted to the controller, and the controller transmits the data AR to the computer to form a time/current curve; the data PR acquired by the air pressure sensor is transmitted to the controller, and the controller transmits the data PR to the computer to form a time/air pressure curve;
5) judging and processing the acquired data AR and PR by the computer to obtain a conclusion whether the data are qualified or not;
6) the controller controls to open the P electromagnetic valve and is communicated with a P gas path of the closed air pump for exhausting;
7) data AP collected by the current sensor is transmitted to the controller, and the controller transmits the data AP to the computer to form a time/current curve; the data PP collected by the air pressure sensor is transmitted to the controller, and the controller transmits the data PP to the time/air pressure curve of the computer;
8) and judging and processing the acquired data AP and PP by the computer to obtain a conclusion of qualification or not.
3. The method for testing the performance of the closed air pump by using the closed air pump performance testing system of the passenger vehicle as claimed in claim 2, wherein in the step 5), the computer judges and processes the acquired data AR and PR to obtain the result of qualification or not, and the method specifically comprises the following steps:
when the AR is in the range of A1-A2, the AR is qualified, otherwise, the AR is not qualified;
when PR is in the range of P1-P2, the PR is qualified, otherwise, the PR is not qualified;
when the time of reaching the specified pressure P3 is less than T1, the product is qualified, otherwise, the product is not qualified;
when the real-time pressure drop is less than the allowable pressure drop P4, the test is passed, otherwise, the test is failed.
4. The method for testing the performance of the closed air pump by using the closed air pump performance testing system of the passenger vehicle as claimed in claim 2, wherein in the step 8), the computer judges and processes the collected data AP and PP to obtain the result of qualification or not, and the method specifically comprises the following steps:
when the AP is in A1-A2, the AP is qualified, otherwise, the AP is not qualified;
when the PP is in the range of P1-P2, the PP is qualified, otherwise, the PP is unqualified;
when the time of reaching the specified pressure P3 is less than T1, the product is qualified, otherwise, the product is not qualified;
when the real-time pressure drop is less than the allowable pressure drop P4, the test is passed, otherwise, the test is failed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010113502.0A CN111287952A (en) | 2020-02-24 | 2020-02-24 | Passenger car closed air pump performance test system and test method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010113502.0A CN111287952A (en) | 2020-02-24 | 2020-02-24 | Passenger car closed air pump performance test system and test method |
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| CN111287952A true CN111287952A (en) | 2020-06-16 |
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| DE102012223176A1 (en) * | 2012-12-14 | 2014-07-03 | Continental Automotive Gmbh | Method for testing associated switching unit for turning on and off of compressor, involves performing acoustic inspection of compressor operation and evaluating operability of compressor based on switching unit |
| CN204783602U (en) * | 2015-02-10 | 2015-11-18 | 郑州宇通客车股份有限公司 | Electric -Driven air compressor test system for vehicle |
| CN110296070A (en) * | 2019-07-11 | 2019-10-01 | 广东航品精工科技股份有限公司 | A kind of automobile air suspension system inflator pump automatic checkout system |
| CN110374859A (en) * | 2019-07-29 | 2019-10-25 | 山东泰展机电科技股份有限公司 | A kind of inner circulating air pump life detecting device and method |
| CN110792587A (en) * | 2019-12-06 | 2020-02-14 | 青岛艾迪斯车辆部件有限公司 | Detection device and method for air suspension air pump of middle-high-end automobile |
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2020
- 2020-02-24 CN CN202010113502.0A patent/CN111287952A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012223176A1 (en) * | 2012-12-14 | 2014-07-03 | Continental Automotive Gmbh | Method for testing associated switching unit for turning on and off of compressor, involves performing acoustic inspection of compressor operation and evaluating operability of compressor based on switching unit |
| CN204783602U (en) * | 2015-02-10 | 2015-11-18 | 郑州宇通客车股份有限公司 | Electric -Driven air compressor test system for vehicle |
| CN110296070A (en) * | 2019-07-11 | 2019-10-01 | 广东航品精工科技股份有限公司 | A kind of automobile air suspension system inflator pump automatic checkout system |
| CN110374859A (en) * | 2019-07-29 | 2019-10-25 | 山东泰展机电科技股份有限公司 | A kind of inner circulating air pump life detecting device and method |
| CN110792587A (en) * | 2019-12-06 | 2020-02-14 | 青岛艾迪斯车辆部件有限公司 | Detection device and method for air suspension air pump of middle-high-end automobile |
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Application publication date: 20200616 |