CN113588270B - Method and device for detecting turbocharging electric control actuator - Google Patents
Method and device for detecting turbocharging electric control actuator Download PDFInfo
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- CN113588270B CN113588270B CN202110677184.5A CN202110677184A CN113588270B CN 113588270 B CN113588270 B CN 113588270B CN 202110677184 A CN202110677184 A CN 202110677184A CN 113588270 B CN113588270 B CN 113588270B
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- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
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Abstract
The invention relates to the technical field of turbochargers, in particular to a method and a device for detecting a turbocharged electric control actuator, wherein the method comprises the following steps: performing steady-state working condition test, variable rotation speed working condition test, variable load working condition test and transient working condition test on the engine; obtaining a steady-state working condition data set according to the steady-state working condition test; obtaining a variable rotation speed working condition data set according to the variable rotation speed working condition test; obtaining a variable load working condition data set according to the variable load working condition test, and obtaining a transient working condition data set according to the transient working condition test; and determining the control state of the electric control actuator according to the steady-state working condition data set, the variable rotation speed working condition data set, the variable load working condition data set and the transient working condition data set. The invention realizes the high-efficiency and reliable detection of the electric control actuator, analyzes the specific condition of the electric control actuator, and obtains the detection result with high reliability and high accuracy.
Description
Technical Field
The invention relates to the technical field of turbochargers, in particular to a method and a device for detecting a turbocharger electric control actuator.
Background
The principle of the turbocharging system of the automobile is to utilize the energy of the exhaust gas of the engine as power to drive the turbocharger. The turbocharger is used for compressing air and supplying the compressed air into the engine so as to improve the charging density of the engine and increase the air inflow of the engine, thereby improving the power of the engine, improving the thermal efficiency of the engine, reducing the oil consumption rate and reducing exhaust pollutants.
Currently, pneumatic actuators are often used as actuators for wastegate valves of turbochargers. However, the slow reaction rate of the pneumatic actuator, poor control accuracy, can affect the efficiency of the turbocharger and the performance of the engine. Therefore, the use of electrically controlled actuators for actuators is currently the main stream of development. The electric control actuator has high reaction speed and high control precision, and can improve the efficiency of the turbocharger and the performance of the engine. However, the electric control actuator has a complex structure and high control strategy requirements, mainly comprises control precision, control stability and the like, so that the problems of various potential electric control actuators of the supercharger are found through a whole vehicle endurance test in the later development stage in most host factories at present, and the detection of the electric control actuator after the development can reduce the detection efficiency. Therefore, efficient detection of electrically controlled actuators has become a challenge for developers.
Disclosure of Invention
According to the method and the device for detecting the electric control actuator of the turbocharger, the technical problem that the detection efficiency of the electric control actuator of the turbocharger in the prior art is low is solved, high-efficiency detection of the electric control actuator is achieved, and the detection result has the advantages of being high in reliability and accuracy.
In a first aspect, an embodiment of the present invention provides a method for detecting a turbocharger electric control actuator, including:
performing steady-state working condition test, variable rotation speed working condition test, variable load working condition test and transient working condition test on the engine;
obtaining a steady-state working condition data set according to the steady-state working condition test; obtaining a variable rotation speed working condition data set according to the variable rotation speed working condition test; obtaining a variable load working condition data set according to the variable load working condition test, and obtaining a transient working condition data set according to the transient working condition test;
and determining the control state of the electric control actuator according to the steady-state working condition data set, the variable rotation speed working condition data set, the variable load working condition data set and the transient working condition data set.
Preferably, the obtaining a steady-state working condition data set according to the steady-state working condition test includes:
Under the condition that the load of the engine is the first load, the rotating speed of the engine is adjusted every set time, measurement is carried out in the process of adjusting the rotating speed of the engine every time, and steady-state working condition data of the engine every time the rotating speed of the engine is adjusted are obtained through measurement;
and obtaining the steady-state working condition data set according to steady-state working condition data when the rotating speed of the engine is adjusted each time.
Preferably, the obtaining the variable rotation speed working condition data set according to the variable rotation speed working condition test includes:
the variable speed operating condition data set is measured during pulling up the rotational speed of the engine from the idle speed to a nominal rotational speed and during decreasing the rotational speed of the engine from the nominal rotational speed to the idle speed after each adjustment of the load of the engine.
Preferably, the obtaining the variable load condition data set according to the variable load condition test includes:
measuring first variable load working condition data in the process of pulling the load of the engine from zero load to the first load and in the process of reducing the load of the engine from the first load to the zero load under the condition that the rotating speed of the engine is the idle speed;
Under the condition that the rotating speed of the engine is the first rotating speed, second variable load working condition data are measured in the process of pulling the load of the engine from zero load to the first load and in the process of reducing the load of the engine from the first load to the zero load;
and obtaining the variable load working condition data set according to the first variable load working condition data and the second variable load working condition data.
Preferably, the obtaining a transient state working condition data set according to the transient state working condition test includes:
the transient condition data set is measured during a pull-up of the load of the engine from the zero load to the first load and during a pull-down of the load of the engine from the first load to the zero load after each adjustment of the rotational speed of the engine.
Preferably, the determining the control state of the electric control actuator according to the steady-state working condition data set, the variable rotation speed working condition data set, the variable load working condition data set and the transient working condition data set includes:
and if the voltage value of each electric control actuator in the steady-state working condition data set, the variable-rotation-speed working condition data set, the variable-load working condition data set and the transient working condition data set is not smaller than a voltage threshold value, determining that the electric control actuator has no fault and the control state is normal.
Preferably, the determining the control state of the electric control actuator according to the steady-state working condition data set, the variable rotation speed working condition data set, the variable load working condition data set and the transient working condition data set includes:
obtaining an actual opening fluctuation value and a duty ratio value from the steady-state working condition data set, the variable-rotation-speed working condition data set, the variable-load working condition data set and the transient working condition data set, wherein the actual opening fluctuation value is a difference value between a first actual opening and a second actual opening of the electric control actuator at each rotating speed of the engine, and the duty ratio value is a root mean square value of the duty ratio of the electric control actuator in a preset period;
and if the actual opening fluctuation value is in the fluctuation range and the duty ratio value is not greater than the duty ratio threshold value, determining that the software execution program of the electric control executor is normal.
Based on the same inventive concept, the present invention also provides a device for detecting a turbocharger electric control actuator, comprising:
the test module is used for carrying out steady-state working condition test, variable rotation speed working condition test, variable load working condition test and transient working condition test on the engine;
The obtaining module is used for obtaining a steady-state working condition data set according to the steady-state working condition test; obtaining a variable rotation speed working condition data set according to the variable rotation speed working condition test; obtaining a variable load working condition data set according to the variable load working condition test, and obtaining a transient working condition data set according to the transient working condition test;
the determining module is used for determining the control state of the electric control actuator according to the steady-state working condition data set, the variable-rotation-speed working condition data set, the variable-load working condition data set and the transient working condition data set.
Based on the same inventive concept, in a third aspect, the present invention provides a computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, said processor implementing the steps of a method of detecting a turbocharged electronically controlled actuator when executing said program.
Based on the same inventive concept, in a fourth aspect, the present invention provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of a method of detecting a turbocharged electronically controlled actuator.
One or more technical solutions in the embodiments of the present invention at least have the following technical effects or advantages:
In the embodiment of the application, steady-state working condition test, variable rotation speed working condition test, variable load working condition test and transient working condition test are carried out on the engine, and various different execution conditions of the engine are respectively simulated when the engine is started, so that specific execution conditions of the electric control actuator are measured. According to the specific execution condition of the electric control actuator, the specific problem of the electric control actuator is analyzed, the specific condition of the electric control actuator is analyzed through high-efficiency and reliable detection of the electric control actuator, the detection result with high reliability and high accuracy is obtained, and a reliable basis is provided for the subsequent analysis of the specific problem of the electric control actuator and the detection of the failure of the electric control actuator.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also throughout the drawings, like reference numerals are used to designate like parts. In the drawings:
FIG. 1 is a flow chart of steps of a method of detecting a turbocharged electronically controlled actuator in an embodiment of the present invention;
FIG. 2 shows a block schematic diagram of an apparatus for detecting a turbocharged electronically controlled actuator in an embodiment of the invention;
fig. 3 shows a schematic structural diagram of a computer device in an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
Example 1
A first embodiment of the present invention provides a method for detecting an electrically controlled actuator for turbocharging, as shown in fig. 1, which is mainly applied to a related test device for testing a turbocharger and an engine.
The following describes in detail, with reference to fig. 1, the specific implementation steps of the method for detecting an electrically controlled actuator for turbocharging according to the present embodiment:
and step S101, performing steady-state working condition test, variable rotation speed working condition test, variable load working condition test and transient working condition test on the engine.
Specifically, steady-state condition test, variable rotation speed condition test, variable load condition test and transient condition test are all performed in the test equipment.
Step S102 is executed, and a steady-state working condition data set is obtained according to a steady-state working condition test; obtaining a variable rotation speed working condition data set according to the variable rotation speed working condition test; and obtaining a variable load working condition data set according to the variable load working condition test, and obtaining a transient working condition data set according to the transient working condition test.
The steady-state working condition data set, the variable rotation speed working condition data set, the variable load working condition data set and the transient working condition data set all comprise related test parameters such as the rotation speed of an engine, the torque of the engine, the opening degree of a throttle valve, the voltage of an electric control actuator, the required opening degree of the electric control actuator, the actual opening degree of the electric control actuator, the duty ratio of the electric control actuator and the like. The sampling frequency of the relevant test equipment is 100Hz, namely relevant test parameter data are collected every 0.01 second.
The method comprises the steps of respectively carrying out steady-state working condition test, variable rotation speed working condition test, variable load working condition test and transient working condition test on an engine, obtaining corresponding data sets from each working condition test, and then carrying out detailed explanation on each working condition test and the obtained corresponding data sets, wherein the specific steps are as follows:
(1) And carrying out steady-state working condition test on the engine, and obtaining a steady-state working condition data set in the steady-state working condition test.
Specifically, under the condition that the load of the engine is the first load, the rotating speed of the engine is adjusted every set time, measurement is carried out in the process of adjusting the rotating speed of the engine every time, and steady-state working condition data of the engine at each time of adjusting the rotating speed of the engine are obtained through measurement; and obtaining a steady-state working condition data set according to steady-state working condition data when the rotating speed of the engine is adjusted each time. The first load is usually set to 100%, and is also set according to actual requirements. The setting time is also set according to the actual requirement.
For example, the steady-state operation test is to perform different rotational speeds of the engine on the premise that the load of the engine is set to 100%. Setting the load of the engine as 100%, and measuring first steady-state working condition data when the rotating speed of the engine is adjusted to be idle and the idle operation is kept for 60 seconds. The first steady-state working condition data comprise related test parameters such as the engine speed, the engine torque, the throttle opening, the electric control actuator voltage, the electric control actuator required opening, the electric control actuator actual opening, the electric control actuator duty ratio and the like which are measured under the condition of 100% load of the engine and the idle speed of the engine.
After the engine was kept running at idle for 60 seconds, the engine speed was increased from idle to 1000 revolutions per minute (rpm), which is 10 seconds. Then, the engine was kept running at 1000rpm for 60 seconds while still at 100% engine load, and second steady state operating condition data was measured. The second steady-state working condition data comprises related test parameters such as the measured engine speed, the measured engine torque, the measured throttle opening, the measured electric control actuator voltage, the measured electric control actuator demand opening, the measured electric control actuator actual opening, and the measured electric control actuator duty cycle under the condition that the load of the engine is 100 percent and the engine speed is 1000 rpm.
After the engine was kept running at 1000rpm for 60 seconds, the rotational speed of the engine was increased from 1000rpm to 1500rpm, which was a transition time of 10 seconds. Then, still at 100% engine load, the engine was operated at 1500rpm for 60 seconds, and third steady state operating condition data was measured. The third steady-state working condition data comprises related test parameters such as the measured engine speed, the measured engine torque, the measured throttle opening, the measured electric control actuator voltage, the measured electric control actuator demand opening, the measured electric control actuator actual opening, and the measured electric control actuator duty cycle under the condition that the load of the engine is 100 percent and the engine speed is 1500 rpm.
After the engine was kept running at 1500rpm for 60 seconds, the engine speed was increased from 1500rpm to 2000rpm, which was a transition time of 10 seconds. Then, the engine was kept running at 2000rpm for 60 seconds while still at 100% engine load, and fourth steady state operating condition data was measured. The fourth steady-state operating condition data comprises related test parameters such as the measured engine speed, the measured engine torque, the measured throttle opening, the measured electric control actuator voltage, the measured electric control actuator demand opening, the measured electric control actuator actual opening, and the measured electric control actuator duty cycle under the condition that the load of the engine is 100 percent and the engine speed is 2000 rpm.
After the engine was kept running at 2000rpm for 60 seconds, the engine speed was increased from 2000rpm to 2500rpm, which was a transition time of 10 seconds. Next, still at 100% engine load, the engine was operated at 2500rpm for 60 seconds, and fifth steady state operating condition data was measured. The fifth steady-state operating condition data comprises related test parameters such as the measured engine speed, the measured engine torque, the measured throttle opening, the measured electric control actuator voltage, the measured electric control actuator demand opening, the measured electric control actuator actual opening, and the measured electric control actuator duty cycle under the condition that the engine is 100% loaded and the engine is at 2500 rpm.
And forming a steady-state working condition data set according to the measured first steady-state working condition data, second steady-state working condition data, third steady-state working condition data, fourth steady-state working condition data and fifth steady-state working condition data.
In the embodiment, steady-state working condition test is carried out on the engine, so that the situation of different rotating speeds of the engine in a full-open throttle state when driving is simulated, high-efficiency detection is carried out on the electric control actuator, and the detection result has the advantages of high reliability and high accuracy.
(2) And carrying out variable rotation speed working condition test on the engine, and obtaining a variable rotation speed working condition data set in the variable rotation speed working condition test.
Specifically, after each adjustment of the load of the engine, a variable speed operating condition data set is measured during which the speed of the engine is pulled up from idle to rated speed and the speed of the engine is reduced from rated speed to idle. The rated rotation speed is the maximum rotation speed of the engine and can be set according to actual requirements.
For example, the engine is first pulled up from idle to rated speed for 10 seconds with the load of the engine adjusted to 25%, and the engine is kept running at the rated speed for 70 seconds. After the engine is operated for 70 seconds at the rated rotational speed, the rotational speed of the engine is reduced from the rated rotational speed to an idle speed for the next load test, and the first variable rotational speed operating condition data is measured. The first variable rotation speed operating mode data includes: and when the load of the engine is 25%, the rotating speed of the engine is increased from idle speed to rated rotating speed, the rated rotating speed is maintained in the running process, and the rotating speed is reduced from rated rotating speed to idle speed, and the measured engine rotating speed, engine torque, throttle opening, electric control actuator voltage, electric control actuator required opening, electric control actuator actual opening, electric control actuator duty ratio and other relevant test parameters are measured.
Then, the engine speed was increased from the idle speed to the rated speed for 10 seconds under the condition that the load of the engine was adjusted to 50%, and the engine was kept running at the rated speed for 70 seconds. After the engine is operated for 70 seconds at the rated speed, the speed of the engine is reduced from the rated speed to idle speed for the next load test, and second variable speed operating condition data are measured. The second variable rotation speed operating mode data includes: and when the load of the engine is 50%, the rotating speed of the engine is increased from idling to rated rotating speed, the rated rotating speed is maintained in the running process and the rated rotating speed is reduced from rated rotating speed to idling, and the measured engine rotating speed, engine torque, throttle opening, electric control actuator voltage, electric control actuator required opening, electric control actuator actual opening, electric control actuator duty ratio and other relevant test parameters are measured.
Next, the engine speed was increased from the idle speed to the rated speed for 10 seconds under the condition that the load of the engine was adjusted to 75%, and the engine was kept running at the rated speed for 70 seconds. After the engine is operated for 70 seconds at the rated rotation speed, the rotation speed of the engine is reduced from the rated rotation speed to idle speed so as to perform the next load test, and third rotation speed changing working condition data are measured. The third variable rotation speed operating mode data includes: and when 75% of the load of the engine is applied, the rotating speed of the engine is increased from idling to rated rotating speed, the rated rotating speed is maintained in the running process, and the rotating speed is reduced from rated rotating speed to idling, and the measured engine rotating speed, engine torque, throttle opening, electric control actuator voltage, electric control actuator required opening, electric control actuator actual opening, electric control actuator duty ratio and other relevant test parameters are measured.
Then, the engine speed was increased from the idle speed to the rated speed for 10 seconds under the condition that the load of the engine was adjusted to 100%, and the engine was kept running at the rated speed for 70 seconds. After the engine is operated for 70 seconds at the rated rotation speed, the rotation speed of the engine is reduced from the rated rotation speed to idle speed so as to perform the next load test, and fourth rotation speed changing working condition data are measured. The fourth variable rotation speed operating mode data includes: and when the load of the engine is 100%, the rotating speed of the engine is pulled up from idling to the rated rotating speed, the rated rotating speed is kept in the running process, and the rotating speed is reduced from the rated rotating speed to idling, and the measured engine rotating speed, engine torque, throttle opening, electric control actuator voltage, electric control actuator required opening, electric control actuator actual opening, electric control actuator duty ratio and other relevant test parameters are measured.
And forming a variable rotation speed working condition data set according to the measured first variable rotation speed working condition data, second variable rotation speed working condition data, third variable rotation speed working condition data and fourth variable rotation speed working condition data.
In the embodiment, the engine is tested under the working condition of variable rotation speed, so that the condition of engine rotation speed change under different engine loads is simulated when the engine is started, the electric control actuator is detected with high efficiency, and the detection result has the advantages of high reliability and high accuracy.
(3) And carrying out variable load working condition test on the engine, and obtaining a variable load working condition data set in the variable load working condition test.
Specifically, the first variable load condition data is measured during a process of pulling up the load of the engine from the zero load to the first load and during a process of decreasing the load of the engine from the first load to the zero load under the condition that the rotational speed of the engine is idling. And under the condition that the rotating speed of the engine is the first rotating speed, the second variable load working condition data are measured in the process of pulling the load of the engine from zero load to the first load and in the process of reducing the load of the engine from the first load to the zero load. And obtaining a variable load working condition data set according to the first variable load working condition data and the second variable load working condition data. The zero load is that the load of the engine is zero, and the first rotating speed is set according to actual requirements.
For example, first, in the case where the engine is idling, the load of the transmitter is pulled up from zero load to 100% in 10 seconds, and the engine is kept at 100% load for 70 seconds. After the engine was kept at 100% load for 70 seconds, the load of the engine was reduced from 100% to 0 for the next speed test, and first variable load operating mode data was measured. The first variable load condition data includes: when the rotating speed of the engine is idling, the load of the engine is measured to be related test parameters such as the rotating speed of the engine, the engine torque, the throttle opening, the voltage of the electric control actuator, the required opening of the electric control actuator, the actual opening of the electric control actuator, the duty ratio of the electric control actuator and the like in the process of pulling up the load of the engine from 0 to 100 percent, in the process of keeping the load of the engine to 100 percent and in the process of reducing the load of the engine from 100 percent to 0 percent.
In the case of 1000rpm of the engine, the load of the transmitter was pulled up from zero load to 100% in 10 seconds, and the engine was kept at 100% load for 70 seconds. After the engine was kept at 100% load for 70 seconds, the load of the engine was reduced from 100% to 0 for the next speed test, and second variable load operating mode data was measured. The second variable load operating condition data includes: when the rotating speed of the engine is 100rpm, the load of the engine is measured to be related test parameters such as the rotating speed of the engine, the engine torque, the throttle opening, the electric control actuator voltage, the electric control actuator required opening, the electric control actuator actual opening, the electric control actuator duty ratio and the like in the process of pulling up the load of the engine from 0 to 100 percent, in the process of keeping the load of the engine to 100 percent and in the process of reducing the load of the engine from 100 percent to 0.
Next, in the case where the engine was at 2000rpm, the load of the transmitter was pulled up from zero load to 100% in 10 seconds, and the engine was kept at 100% load for 70 seconds. After the engine was kept at 100% load for 70 seconds, the load of the engine was reduced from 100% to 0 for the next test of the rotational speed, and third variable load operating mode data was measured. The third variable load operating condition data includes: when the rotating speed of the engine is 2000rpm, the load of the engine is measured to be related test parameters such as the rotating speed of the engine, the engine torque, the throttle opening, the electric control actuator voltage, the electric control actuator required opening, the electric control actuator actual opening, the electric control actuator duty ratio and the like in the process of pulling up the load of the engine from 0 to 100 percent, in the process of keeping the load of the engine to 100 percent and in the process of reducing the load of the engine from 100 percent to 0.
Then, in the case where the engine was at 3000rpm, the load of the transmitter was pulled up from zero load to 100% in 10 seconds, and the engine was kept at 100% load for 70 seconds. After the engine was kept at 100% load for 70 seconds, the load of the engine was reduced from 100% to 0 for the next test of the rotation speed, and fourth variable load operating mode data was measured. The fourth variable load operating mode data includes: when the rotating speed of the engine is 3000rpm, the load of the engine is measured to be related test parameters such as the rotating speed of the engine, the engine torque, the throttle opening, the electric control actuator voltage, the electric control actuator required opening, the electric control actuator actual opening, the electric control actuator duty ratio and the like in the process of pulling up the load of the engine from 0 to 100 percent, in the process of keeping the load of the engine to 100 percent and in the process of reducing the load of the engine from 100 percent to 0.
And forming a variable load working condition data set according to the measured first variable load working condition data, second variable load working condition data, third variable load working condition data and fourth variable load working condition data.
In the embodiment, the variable load working condition test is performed on the engine, so that the load change situation of the engine is simulated under different engine speeds when the engine is started, the high-efficiency detection is performed on the electric control actuator, and the detection result has the advantages of high reliability and high accuracy.
(4) And performing transient working condition test on the engine, and obtaining a transient working condition data set in the transient working condition test.
Specifically, a transient condition data set is measured during a pull-up of the load of the engine from zero load to a first load and a pull-down of the load of the engine from the first load to zero load after each adjustment of the rotational speed of the engine.
For example, first transient condition data is measured by pulling the load of the engine from 0 to 100% in 1 second and then decreasing the load of the transmitter from 100% to 0 in 1 second, with the engine speed being 1000 rpm. The first transient condition data includes: when the rotating speed of the engine is 1000rpm, the measured engine rotating speed, engine torque, throttle opening, electric control actuator voltage, electric control actuator required opening, electric control actuator actual opening, electric control actuator duty ratio and other relevant test parameters are measured in the process that the load of the engine is pulled up from 0 to 100% in 1 second and in the process that the load of the engine is reduced from 100% to 0 in 1 second.
The engine speed was adjusted from 1000rpm to 2000rpm, then the engine load was pulled up from 0 to 100% in 1 second at an engine speed of 2000rpm, and then the transmitter load was reduced from 100% to 0 in 1 second, and second transient operating mode data was measured. The second transient operating condition data includes: when the rotating speed of the engine is 2000rpm, the measured engine rotating speed, engine torque, throttle opening, electric control actuator voltage, electric control actuator required opening, electric control actuator actual opening, electric control actuator duty ratio and other relevant test parameters are measured in the process that the load of the engine is pulled up from 0 to 100% in 1 second and in the process that the load of the engine is reduced from 100% to 0 in 1 second.
The engine speed was adjusted from 2000rpm to 3000rpm, then the engine load was pulled up from 0 to 100% in 1 second at an engine speed of 3000rpm, and then the engine load was reduced from 100% to 0 in 1 second, and third transient operating mode data was measured. The third transient operating condition data includes: when the rotating speed of the engine is 3000rpm, the measured engine rotating speed, engine torque, throttle opening, electric control actuator voltage, electric control actuator required opening, electric control actuator actual opening, electric control actuator duty ratio and other relevant test parameters are measured in the process that the load of the engine is pulled up from 0 to 100% in 1 second and in the process that the load of the engine is reduced from 100% to 0 in 1 second.
And forming a transient state working condition data set according to the measured first transient state working condition data, second transient state working condition data and third transient state working condition data.
In the embodiment, the transient working condition test is performed on the engine, so that the driving acceleration and deceleration change situation is simulated, the high-efficiency detection is performed on the electric control actuator, and the detection result has the advantages of high reliability and high accuracy.
It should be noted that, in the process of performing steady-state working condition test, variable rotation speed working condition test, variable load working condition test and transient working condition test on the engine, the time specifically involved can be set according to the actual requirements. For example, in the above examples, 1 second, 10 seconds or 70 seconds may be set according to actual requirements. However, the time for keeping the engine stably running is not less than 60 seconds, so that the relevant data can be accurately measured.
Step S103 is executed, and the control state of the electric control actuator is determined according to the steady-state working condition data set, the variable rotation speed working condition data set, the variable load working condition data set and the transient working condition data set.
Specifically, according to the voltage of each electric control actuator in each working condition data set, whether the electric control actuator has faults or not is judged. If the voltage value of each electric control actuator in the steady-state working condition data set, the variable-rotation-speed working condition data set, the variable-load working condition data set and the transient working condition data set is not smaller than the voltage threshold value, determining that the electric control actuator has no fault and the control state is normal. When the waste gate valve is completely closed, the voltage of the waste gate valve executed by the electric control actuator is usually 1.3V, which can be set according to practical situations.
If the voltage value of the electric control actuator in the four working condition data sets is smaller than the voltage threshold value, the electric control actuator is indicated to have faults.
And judging whether the software program for executing the electric control executor is reasonable or not according to each opening fluctuation value and the duty ratio in each working condition data set. The method comprises the steps of firstly obtaining an actual opening fluctuation value and a duty ratio value from a steady-state working condition data set, a variable rotation speed working condition data set, a variable load working condition data set and a transient working condition data set, wherein the actual opening fluctuation value is a difference value between a first actual opening and a second actual opening of an electric control actuator when the steady operation time is greater than 1 second under each rotation speed of an engine. The duty cycle value is the root mean square value of the duty cycle of the electronically controlled actuator within a predetermined period. The preset period is usually set to 10 seconds, and can also be set according to actual requirements.
x is the duty cycle acquired every 0.01 secondsRatio.
If the actual opening fluctuation value is in the fluctuation range and the duty ratio value is not greater than the duty ratio threshold value, determining that the software execution program of the electric control executor is normal. The fluctuation range is usually 0 to 2%, and can be set according to actual requirements. The duty cycle threshold is usually 30%, and can be set according to practical requirements.
If the actual opening fluctuation value is not in the fluctuation range or the duty ratio value is larger than the duty ratio threshold value, determining that the software execution program of the electric control actuator is abnormal
One or more technical solutions in the embodiments of the present invention at least have the following technical effects or advantages:
in the embodiment, steady-state working condition test, variable rotation speed working condition test, variable load working condition test and transient working condition test are carried out on the engine, and various different execution conditions of the engine are respectively simulated when the engine is driven, so that specific execution conditions of the electric control actuator are measured. According to the specific execution condition of the electric control actuator, the specific problem of the electric control actuator is analyzed, the specific condition of the electric control actuator is analyzed through high-efficiency and reliable detection of the electric control actuator, the detection result with high reliability and high accuracy is obtained, and a reliable basis is provided for the subsequent analysis of the specific problem of the electric control actuator and the detection of the failure of the electric control actuator.
Example two
Based on the same inventive concept, a second embodiment of the present invention further provides an apparatus for detecting a turbocharger electric control actuator, as shown in fig. 2, including:
the test module 201 is used for performing steady-state working condition test, variable rotation speed working condition test, variable load working condition test and transient working condition test on the engine;
an obtaining module 202, configured to obtain a steady-state working condition data set according to the steady-state working condition test; obtaining a variable rotation speed working condition data set according to the variable rotation speed working condition test; obtaining a variable load working condition data set according to the variable load working condition test, and obtaining a transient working condition data set according to the transient working condition test;
the determining module 203 determines a control state of the electric control actuator according to the steady-state working condition data set, the variable rotation speed working condition data set, the variable load working condition data set and the transient working condition data set.
As an optional embodiment, the obtaining a steady-state operating condition data set according to the steady-state operating condition test includes:
under the condition that the load of the engine is the first load, the rotating speed of the engine is adjusted every set time, measurement is carried out in the process of adjusting the rotating speed of the engine every time, and steady-state working condition data of the engine every time the rotating speed of the engine is adjusted are obtained through measurement;
And obtaining the steady-state working condition data set according to steady-state working condition data when the rotating speed of the engine is adjusted each time.
As an optional embodiment, the obtaining the variable rotation speed working condition data set according to the variable rotation speed working condition test includes:
the variable speed operating condition data set is measured during pulling up the rotational speed of the engine from the idle speed to a nominal rotational speed and during decreasing the rotational speed of the engine from the nominal rotational speed to the idle speed after each adjustment of the load of the engine.
As an optional embodiment, the obtaining a variable load condition dataset according to the variable load condition test includes:
measuring first variable load working condition data in the process of pulling the load of the engine from zero load to the first load and in the process of reducing the load of the engine from the first load to the zero load under the condition that the rotating speed of the engine is the idle speed;
under the condition that the rotating speed of the engine is the first rotating speed, second variable load working condition data are measured in the process of pulling the load of the engine from zero load to the first load and in the process of reducing the load of the engine from the first load to the zero load;
And obtaining the variable load working condition data set according to the first variable load working condition data and the second variable load working condition data.
As an optional embodiment, the obtaining a transient operating condition data set according to the transient operating condition test includes:
the transient condition data set is measured during a pull-up of the load of the engine from the zero load to the first load and during a pull-down of the load of the engine from the first load to the zero load after each adjustment of the rotational speed of the engine.
As an alternative embodiment, the determining the control state of the electric control actuator according to the steady-state operating condition data set, the variable rotation speed operating condition data set, the variable load operating condition data set and the transient operating condition data set includes:
and if the voltage value of each electric control actuator in the steady-state working condition data set, the variable-rotation-speed working condition data set, the variable-load working condition data set and the transient working condition data set is not smaller than a voltage threshold value, determining that the electric control actuator has no fault and the control state is normal.
As an alternative embodiment, the determining the control state of the electric control actuator according to the steady-state operating condition data set, the variable rotation speed operating condition data set, the variable load operating condition data set and the transient operating condition data set includes:
Obtaining an actual opening fluctuation value and a duty ratio value from the steady-state working condition data set, the variable-rotation-speed working condition data set, the variable-load working condition data set and the transient working condition data set, wherein the actual opening fluctuation value is a difference value between a first actual opening and a second actual opening of the electric control actuator at each rotating speed of the engine, and the duty ratio value is a root mean square value of the duty ratio of the electric control actuator in a preset period;
and if the actual opening fluctuation value is in the fluctuation range and the duty ratio value is not greater than the duty ratio threshold value, determining that the software execution program of the electric control executor is normal.
Since the device for detecting the turbo electric control actuator described in this embodiment is a device for implementing the method for detecting the turbo electric control actuator described in the first embodiment of the present application, based on the method for detecting the turbo electric control actuator described in the first embodiment of the present application, a person skilled in the art can understand the specific implementation of the device for detecting the turbo electric control actuator and various modifications thereof, so how to implement the method in the first embodiment of the present application with respect to the device for detecting the turbo electric control actuator will not be described in detail herein. The device used by those skilled in the art to implement the method for detecting the turbocharger electric control actuator in the first embodiment of the present application falls within the scope of protection intended by the present application.
Example III
Based on the same inventive concept, the third embodiment of the present invention further provides a computer device, as shown in fig. 3, including a memory 304, a processor 302, and a computer program stored in the memory 304 and executable on the processor 302, where the processor 302 implements the steps of any one of the above methods for detecting a turbo-charged electric actuator when executing the program.
Where in FIG. 3 a bus architecture (represented by bus 300), bus 300 may comprise any number of interconnected buses and bridges, with bus 300 linking together various circuits, including one or more processors, represented by processor 302, and memory, represented by memory 304. Bus 300 may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., as are well known in the art and, therefore, will not be described further herein. Bus interface 306 provides an interface between bus 300 and receiver 301 and transmitter 303. The receiver 301 and the transmitter 303 may be the same element, i.e. a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The processor 302 is responsible for managing the bus 300 and general processing, while the memory 304 may be used to store data used by the processor 302 in performing operations.
Example IV
Based on the same inventive concept, the fourth embodiment of the present invention further provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of any one of the methods of detecting a turbocharged electronically controlled actuator described in the previous embodiment.
It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (8)
1. A method of detecting a turbocharged electronically controlled actuator, comprising:
performing steady-state working condition test, variable rotation speed working condition test, variable load working condition test and transient working condition test on the engine;
obtaining a steady-state working condition data set according to the steady-state working condition test; obtaining a variable rotation speed working condition data set according to the variable rotation speed working condition test; obtaining a variable load working condition data set according to the variable load working condition test, and obtaining a transient working condition data set according to the transient working condition test;
determining a control state of the electric control actuator according to the steady-state working condition data set, the variable rotation speed working condition data set, the variable load working condition data set and the transient working condition data set;
if the voltage value of each electric control actuator in the steady-state working condition data set, the variable-rotation-speed working condition data set, the variable-load working condition data set and the transient working condition data set is not smaller than a voltage threshold value, determining that the electric control actuator has no fault and the control state is normal;
Obtaining an actual opening fluctuation value and a duty ratio value from the steady-state working condition data set, the variable-rotation-speed working condition data set, the variable-load working condition data set and the transient working condition data set, wherein the actual opening fluctuation value is a difference value between a first actual opening and a second actual opening of the electric control actuator when the steady operation time is greater than 1 second at each rotation speed of the engine, and the duty ratio value is a root mean square value of the duty ratio of the electric control actuator in a preset period;
and if the actual opening fluctuation value is in the fluctuation range and the duty ratio value is not greater than the duty ratio threshold value, determining that the software execution program of the electric control executor is normal.
2. The method of claim 1, wherein said obtaining a steady state operating condition dataset from said steady state operating condition test comprises:
under the condition that the load of the engine is the first load, the rotating speed of the engine is adjusted every set time, measurement is carried out in the process of adjusting the rotating speed of the engine every time, and steady-state working condition data of the engine every time the rotating speed of the engine is adjusted are obtained through measurement;
and obtaining the steady-state working condition data set according to steady-state working condition data when the rotating speed of the engine is adjusted each time.
3. The method of claim 2, wherein said obtaining a variable speed operating condition dataset from said variable speed operating condition test comprises:
the variable speed operating condition dataset is measured during pulling up the rotational speed of the engine from idle to a nominal rotational speed and during decreasing the rotational speed of the engine from the nominal rotational speed to the idle after each adjustment of the load of the engine.
4. The method of claim 3, wherein said obtaining a variable load condition dataset from said variable load condition test comprises:
measuring first variable load working condition data in the process of pulling the load of the engine from zero load to the first load and in the process of reducing the load of the engine from the first load to the zero load under the condition that the rotating speed of the engine is the idle speed;
under the condition that the rotating speed of the engine is the first rotating speed, second variable load working condition data are measured in the process of pulling the load of the engine from zero load to the first load and in the process of reducing the load of the engine from the first load to the zero load;
And obtaining the variable load working condition data set according to the first variable load working condition data and the second variable load working condition data.
5. The method of claim 4, wherein the obtaining a transient operating condition dataset from the transient operating condition test comprises:
the transient condition data set is measured during a pull-up of the load of the engine from the zero load to the first load and during a pull-down of the load of the engine from the first load to the zero load after each adjustment of the rotational speed of the engine.
6. An apparatus for detecting an electrically controlled actuator for turbocharging, comprising:
the test module is used for carrying out steady-state working condition test, variable rotation speed working condition test, variable load working condition test and transient working condition test on the engine;
the obtaining module is used for obtaining a steady-state working condition data set according to the steady-state working condition test; obtaining a variable rotation speed working condition data set according to the variable rotation speed working condition test; obtaining a variable load working condition data set according to the variable load working condition test, and obtaining a transient working condition data set according to the transient working condition test;
the determining module is used for determining the control state of the electric control actuator according to the steady-state working condition data set, the variable-rotation-speed working condition data set, the variable-load working condition data set and the transient working condition data set;
If the voltage value of each electric control actuator in the steady-state working condition data set, the variable-rotation-speed working condition data set, the variable-load working condition data set and the transient working condition data set is not smaller than a voltage threshold value, determining that the electric control actuator has no fault and the control state is normal;
obtaining an actual opening fluctuation value and a duty ratio value from the steady-state working condition data set, the variable-rotation-speed working condition data set, the variable-load working condition data set and the transient working condition data set, wherein the actual opening fluctuation value is a difference value between a first actual opening and a second actual opening of the electric control actuator when the steady operation time is greater than 1 second at each rotation speed of the engine, and the duty ratio value is a root mean square value of the duty ratio of the electric control actuator in a preset period;
and if the actual opening fluctuation value is in the fluctuation range and the duty ratio value is not greater than the duty ratio threshold value, determining that the software execution program of the electric control executor is normal.
7. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the method steps of any of claims 1-5 when the program is executed.
8. A computer readable storage medium having stored thereon a computer program, characterized in that the program when executed by a processor realizes the method steps of any of claims 1-5.
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