CN112327079B - Method for determining performance of injection hardware in diesel engine controller - Google Patents
Method for determining performance of injection hardware in diesel engine controller Download PDFInfo
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- CN112327079B CN112327079B CN202011184238.6A CN202011184238A CN112327079B CN 112327079 B CN112327079 B CN 112327079B CN 202011184238 A CN202011184238 A CN 202011184238A CN 112327079 B CN112327079 B CN 112327079B
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- 238000002347 injection Methods 0.000 title claims abstract description 54
- 239000007924 injection Substances 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000010586 diagram Methods 0.000 claims abstract description 17
- 238000012360 testing method Methods 0.000 claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 230000002159 abnormal effect Effects 0.000 claims description 5
- 238000010998 test method Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 238000004088 simulation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/005—Testing of electric installations on transport means
- G01R31/006—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Automation & Control Theory (AREA)
- Testing Of Engines (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
The invention discloses a method for determining the performance of injection hardware in a diesel engine controller, which relates to an engine and mainly solves the technical problem that the existing test method is compared with one-sided; combining the actual rotating speed signal and the actual voltage signal to obtain different values; sequentially inputting the actual rotating speed signals and the actual voltage signals of the combinations into the ECU, and obtaining corresponding injection currents; and (3) manufacturing a voltage-rotating speed distribution diagram according to the distortion states of the actual rotating speed signals, the actual voltage signals and the injection currents of each combination, and determining the performance of injection hardware in the ECU according to the voltage-rotating speed distribution diagram. According to the invention, the engine speed and the test load environment factors are fully considered, the test result of the voltage-speed distribution diagram is more comprehensive, and the test result is more accurate. The hardware working performance of the oil sprayer circuit in the controller can be bottomed, and the engine controller can be improved according to bottoming conditions.
Description
Technical Field
The present invention relates to engines, and more particularly, to a method of determining injection hardware performance in a diesel engine controller.
Background
At present, the hardware performance of an oil injection circuit in various diesel engine controllers is generally judged by qualitatively testing the waveform of the injection current under the severe environment of low voltage. The method can be used for obtaining the hardware performance of the oil injection circuit in the controller approximately, but the injection performance of the diesel engine is not only related to the voltage, but also related to the engine speed and the test load environment, so that the single test result obtained in the low-voltage test is compared with one side, the hardware performance of the oil injection circuit in the oil engine controller cannot be comprehensively reflected, the hardware working performance of the oil injection circuit in the controller is difficult to model, and the engine controller is difficult to improve according to the model condition so as to improve the performance of the oil injection circuit in the controller.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art and aims to provide a method for determining the performance of injection hardware in a diesel engine controller, which can comprehensively test the hardware of an oil injector circuit in the controller.
The technical scheme of the invention is as follows: a method of determining injection hardware performance within a diesel engine controller, comprising:
setting a load signal and an injection condition of the ECU;
combining the actual rotating speed signal and the actual voltage signal to obtain different values;
sequentially inputting the actual rotating speed signals and the actual voltage signals of the combinations into the ECU, and obtaining corresponding injection currents;
and (3) manufacturing a voltage-rotating speed distribution diagram according to the distortion states of the actual rotating speed signals, the actual voltage signals and the injection currents of each combination, and determining the performance of injection hardware in the ECU according to the voltage-rotating speed distribution diagram.
As a further improvement, the combination test of the actual rotation speed signal and the actual voltage signal with different values is specifically:
s1, setting a minimum rotating speed signal, a maximum rotating speed signal, a minimum voltage signal and a maximum voltage signal, taking the minimum rotating speed signal as an actual rotating speed signal and taking the minimum voltage signal as an actual voltage signal;
s2, taking the actual rotating speed signal as a temporary rotating speed signal and taking the actual voltage signal as a temporary voltage signal;
s3, inputting the load signal, the actual rotating speed signal and the actual voltage signal into the ECU;
s4, acquiring injection current of injection hardware in the ECU, and correspondingly storing the injection current, an actual rotating speed signal and an actual voltage signal;
s5, the actual voltage signal=temporary voltage signal+voltage increment; if the actual voltage signal is greater than the maximum voltage signal, taking the minimum voltage signal as an actual voltage signal, and executing step S6; otherwise, executing the step S2;
s6, the actual rotation speed signal=temporary rotation speed signal+rotation speed increment; if the actual rotation speed signal is greater than the maximum rotation speed signal, executing a step S7; otherwise, executing the step S2;
s7, manufacturing the voltage-rotating speed distribution diagram according to the distortion states of all the corresponding stored actual rotating speed signals, actual voltage signals and jet currents in the step S4.
Further, the load signal is a load current.
Further, the load current is obtained through simulation through a power resistor and an inductor.
Further, the actual rotation speed signal is a rotation speed voltage.
Further, the rotating speed voltage is obtained through adjustment of a handheld signal generator.
Further, the actual voltage signal is obtained by means of an adjustable power supply.
Further, the specific judgment of the distortion state of the injection current is as follows: the peak value or pulse width of the jet current is distorted when it is obviously abnormal, otherwise, the peak value or pulse width of the jet current is undistorted.
Advantageous effects
Compared with the prior art, the invention has the advantages that:
according to the invention, the engine speed and the test load environment factors are fully considered, the test result of the voltage-speed distribution diagram is more comprehensive, and the test result is more accurate. The method can be used for bottoming the hardware working performance of the oil sprayer circuit in the controller, recording results are quantized more, the engine controller is improved according to bottoming conditions, and the performance of the oil sprayer circuit in the controller is further improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is a voltage-speed distribution diagram of the present invention.
Detailed Description
The invention will be further described with reference to specific embodiments in the drawings.
Referring to fig. 1 and 2, a method of determining injection hardware performance in a diesel engine controller, comprising:
setting a load signal and an injection condition of the ECU;
combining the actual rotating speed signal and the actual voltage signal to obtain different values;
sequentially inputting the actual rotating speed signals and the actual voltage signals of the combinations into the ECU, and obtaining corresponding injection currents;
and (3) manufacturing a voltage-rotating speed distribution diagram according to the distortion states of the actual rotating speed signals, the actual voltage signals and the injection currents of each combination, and determining the performance of injection hardware in the ECU according to the voltage-rotating speed distribution diagram.
In this embodiment, the combination test of the actual rotation speed signal and the actual voltage signal with different values is specifically:
s1, setting a minimum rotating speed signal, a maximum rotating speed signal, a minimum voltage signal and a maximum voltage signal, taking the minimum rotating speed signal as an actual rotating speed signal and taking the minimum voltage signal as an actual voltage signal;
s2, taking the actual rotating speed signal as a temporary rotating speed signal and taking the actual voltage signal as a temporary voltage signal;
s3, inputting a load signal, an actual rotating speed signal and an actual voltage signal into the ECU;
s4, acquiring injection current of injection hardware in the ECU, and correspondingly storing the injection current, an actual rotating speed signal and an actual voltage signal;
s5, actual voltage signal = temporary voltage signal + voltage increment; if the actual voltage signal is greater than the maximum voltage signal, taking the minimum voltage signal as the actual voltage signal, and executing step S6; otherwise, executing the step S2;
s6, actual rotation speed signal = temporary rotation speed signal + rotation speed increment; if the actual rotation speed signal is greater than the maximum rotation speed signal, executing step S7; otherwise, executing the step S2;
s7, manufacturing a voltage-rotating speed distribution diagram according to the distortion states of all the corresponding stored actual rotating speed signals, actual voltage signals and jet currents in the step S4.
The load signal comprises all loads when the engine normally operates, the load signal is load current, and each load current is obtained by simulation through a power resistor and an inductor. The actual rotating speed signals comprise crankshaft and camshaft signals, the actual rotating speed signals are rotating speed voltages, and each rotating speed voltage is obtained through adjustment of a handheld signal generator. The actual voltage signal is obtained by means of an adjustable power supply.
The specific judgment of the distortion state of the injection current is as follows: the peak or pulse width of the injection current is distorted when it is significantly abnormal, otherwise undistorted. A peak value exceeding 30% of the average peak value is considered to be significantly abnormal, and a pulse width exceeding 50% of the average pulse width is considered to be significantly abnormal.
Preferably, the minimum rotation speed signal is 200r/min, the maximum rotation speed signal is 4000r/min, the rotation speed increment is 100r, the minimum voltage signal is 6V, the maximum voltage signal is 32V, and the voltage increment is 1V.
As shown in fig. 2, the voltage-rotation speed distribution diagram is shown, the voltage is shown as an ordinate, the rotation speed is shown as an abscissa, and the injection condition is shown as a T4 injection condition: the spray interval is 250us, the filling grid is in a distorted state, the blank is in an undistorted state, the working performance of spray hardware can be fully displayed, and the spray hardware in the controller can be subjected to software or hardware improvement according to the distortion area so as to improve the performance. In general, the lower the voltage, the higher the rotating speed, the better the injection current waveform effect, and no distortion, which indicates that the better the injection hardware performance.
According to the invention, the engine speed and the test load environment factors are fully considered, the test result of the voltage-speed distribution diagram is more comprehensive, and the test result is more accurate. The method can be used for bottoming the hardware working performance of the oil sprayer circuit in the controller, recording results are quantized more, the engine controller is improved according to bottoming conditions, and the performance of the oil sprayer circuit in the controller is further improved.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present invention, and these do not affect the effect of the implementation of the present invention and the utility of the patent.
Claims (8)
1. A method of determining injection hardware performance in a diesel engine controller, comprising:
setting a load signal and an injection condition of the ECU;
combining the actual rotating speed signal and the actual voltage signal to obtain different values;
sequentially inputting the actual rotating speed signals and the actual voltage signals of the combinations into the ECU, and obtaining corresponding injection currents;
and (3) manufacturing a voltage-rotating speed distribution diagram according to the distortion states of the actual rotating speed signals, the actual voltage signals and the injection currents of each combination, and determining the performance of injection hardware in the ECU according to the voltage-rotating speed distribution diagram.
2. The method for determining the performance of injection hardware in a diesel engine controller according to claim 1, wherein the combination test of the actual rotation speed signal and the actual voltage signal with different values is specifically:
s1, setting a minimum rotating speed signal, a maximum rotating speed signal, a minimum voltage signal and a maximum voltage signal, taking the minimum rotating speed signal as an actual rotating speed signal and taking the minimum voltage signal as an actual voltage signal;
s2, taking the actual rotating speed signal as a temporary rotating speed signal and taking the actual voltage signal as a temporary voltage signal;
s3, inputting the load signal, the actual rotating speed signal and the actual voltage signal into the ECU;
s4, acquiring injection current of injection hardware in the ECU, and correspondingly storing the injection current, an actual rotating speed signal and an actual voltage signal;
s5, the actual voltage signal=temporary voltage signal+voltage increment; if the actual voltage signal is greater than the maximum voltage signal, taking the minimum voltage signal as an actual voltage signal, and executing step S6; otherwise, executing the step S2;
s6, the actual rotation speed signal=temporary rotation speed signal+rotation speed increment; if the actual rotation speed signal is greater than the maximum rotation speed signal, executing a step S7; otherwise, executing the step S2;
s7, manufacturing the voltage-rotating speed distribution diagram according to the distortion states of all the corresponding stored actual rotating speed signals, actual voltage signals and jet currents in the step S4.
3. A method of determining injection hardware performance in a diesel engine controller according to claim 1, wherein the load signal is a load current.
4. A method of determining injection hardware performance in a diesel engine controller according to claim 3, wherein the load current is modeled by a power resistor and an inductor.
5. A method of determining injection hardware performance in a diesel engine controller according to claim 1, wherein the actual speed signal is a speed voltage.
6. A method of determining injection hardware performance in a diesel engine controller according to claim 5, wherein the rotational speed voltage is adjusted by a hand-held signal generator.
7. A method of determining injection hardware performance in a diesel engine controller according to claim 1, wherein the actual voltage signal is derived by an adjustable power supply.
8. A method of determining injection hardware performance in a diesel engine controller according to any one of claims 1-7, wherein the specific determination of the distortion state of the injection current is: the peak value or pulse width of the jet current is distorted when it is obviously abnormal, otherwise, the peak value or pulse width of the jet current is undistorted.
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| CN202011184238.6A CN112327079B (en) | 2020-10-30 | 2020-10-30 | Method for determining performance of injection hardware in diesel engine controller |
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| CN202011184238.6A CN112327079B (en) | 2020-10-30 | 2020-10-30 | Method for determining performance of injection hardware in diesel engine controller |
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| CN112327079B true CN112327079B (en) | 2023-12-15 |
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