CN114636563A - Turbine engine drag-down test method and system - Google Patents
Turbine engine drag-down test method and system Download PDFInfo
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- CN114636563A CN114636563A CN202210301785.0A CN202210301785A CN114636563A CN 114636563 A CN114636563 A CN 114636563A CN 202210301785 A CN202210301785 A CN 202210301785A CN 114636563 A CN114636563 A CN 114636563A
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- 238000010998 test method Methods 0.000 title claims description 8
- 238000012360 testing method Methods 0.000 claims abstract description 32
- 239000000446 fuel Substances 0.000 claims abstract description 29
- 238000000034 method Methods 0.000 claims abstract description 19
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 6
- 238000001514 detection method Methods 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 20
- 239000000243 solution Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000000930 thermomechanical effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/14—Testing gas-turbine engines or jet-propulsion engines
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Engines (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a method and a system for a turbine engine drag test, which are applied to the technical field of the engine drag test and specifically comprise the following steps: acquiring working state information of each part of an engine; and controlling the fuel injector of the engine not to inject fuel, controlling the ignition coil of the engine not to ignite and controlling the throttle valve to keep fully open according to the working state information. The invention discloses a method and a system for a turbine engine drag-down test, wherein when a supercharged engine is subjected to a traditional heat engine running-in test, the fuel pressure in a high-pressure fuel rail cannot reach the maximum design pressure, and the problem that the fuel pressure leaks only when the fuel pressure reaches the maximum design pressure cannot be effectively detected. Through the back-dragging test, the technical problem that the fuel pressure in the high-pressure oil rail cannot reach the design pressure in the heat engine running-in test can be solved, and the sealing performance detection capability of the high-pressure oil rail area is improved.
Description
Technical Field
The invention relates to the technical field of engine drag-down tests, in particular to a method and a system for a turbine engine drag-down test.
Background
Before the automobile engine leaves a factory or enters an assembly line, a test machine (test running) or a heat machine running-in is carried out on a specified test bench, and the running time is different from 2min to 50min, so that the process problems in the production and assembly process are found. Because the turbocharging type engine is additionally provided with the high-pressure oil rail to realize the function of direct injection in the cylinder, the designed fuel pressure in the high-pressure oil rail is higher, and when the test bench is subjected to thermomechanical grinding, the fuel pressure in the high-pressure oil rail cannot reach the designed oil pressure, and the sealing performance cannot be effectively confirmed.
Therefore, it is an urgent need to solve the problem of the art to provide a method and a system for testing turbine engine drag-down, which can increase the sealing performance detection capability of the high-pressure oil rail area.
Disclosure of Invention
In view of this, the invention provides a method and a system for a turbine engine drag test, which can improve the pressure of a high-pressure oil rail during the test and increase the sealing performance detection capability of a high-pressure oil rail area.
In order to achieve the above purpose, the invention provides the following technical scheme:
a turbine engine drag test method comprises the following specific steps:
acquiring working state information of each part of an engine;
and controlling the fuel injector of the engine not to inject fuel, controlling the ignition coil of the engine not to ignite and controlling the throttle valve to keep fully open according to the working state information.
Optionally, in the method for testing the turbine engine in the reverse dragging mode, the specific steps of obtaining the working state information of each part of the engine are as follows:
the method comprises the steps that a sensor obtains state signals of all parts of an engine;
the state signal is subjected to digital-analog change and is analyzed by the microcontroller to obtain the working state and the running condition of each part.
Optionally, in the above method for testing the reverse dragging of the turbine engine, the injector on the engine is used to collect the information about the operating state of the injector of the engine, and the circuit responsible for inputting is used to send the data to the a/D converter; after the A/D converter receives the sensor data, it is converted to the microcomputer, which compares, calculates and corrects the signal from the oil injector by the stored program and data, and sends the processed result to the output circuit in the form of instruction to drive the oil injector not to inject oil.
Optionally, in the above method for testing the turbine engine in the reverse dragging mode, the ignition coil on the engine collects the operating state information of the ignition coil of the engine, and the circuit responsible for inputting sends the data to the a/D converter; after the A/D converter receives the sensor data, it is converted to microcomputer, which compares, calculates and corrects the signal from ignition coil by the stored program and data, and sends the processed result to output circuit in the form of instruction to drive the ignition coil to make it not ignite.
Optionally, in the method for testing the turbine engine in the reverse towing mode, a throttle position sensor on the engine is used for collecting the throttle operating state information of the engine, and a circuit responsible for inputting the throttle operating state information sends the data to the a/D converter; after the A/D converter receives the sensor data, it is converted to the microcomputer, which compares, calculates and corrects the signal from the throttle position sensor by the stored program and data, and sends the processed result to the output circuit in the form of instruction to drive the throttle position to keep full open.
A turbine engine drag-down testing system, comprising: the device comprises a platform device, a motor, a belt and an electronic control unit; the belt drags the engine belt pulley and the motor belt pulley to synchronously rotate, and the platform device adjusts the distance between the motor and adjusts the tension degree of the belt; the electronic control unit controls the engine fuel injector not to inject fuel, controls the engine ignition coil not to ignite and controls the throttle valve to keep fully open.
Optionally, in the above turbine engine drag-down testing system, the platform device includes a supporting base frame, a supporting plate, and a movable sliding rail; the supporting underframe is arranged at the lower end of the supporting plate; the movable slide rail is arranged on the supporting plate; the motor moves on the movable slide rail.
According to the technical scheme, compared with the prior art, the invention discloses the method and the system for the turbine engine drag-down test, when the supercharged engine is subjected to the traditional heat engine running-in test, the fuel pressure in the high-pressure fuel rail cannot reach the maximum design pressure, and the problem that the fuel pressure leaks only when the fuel pressure reaches the maximum design pressure cannot be effectively detected. Through the back-dragging test, the technical problem that the fuel pressure in the high-pressure oil rail cannot reach the design pressure in the heat engine running-in test can be solved, and the sealing performance detection capability of the high-pressure oil rail area is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention discloses a method and a system for a turbine engine drag-down test. Through the back-dragging test, the technical problem that the fuel pressure in the high-pressure oil rail cannot reach the design pressure in the heat engine running-in test can be solved, and the sealing performance detection capability of the high-pressure oil rail area is improved.
The embodiment of the invention discloses a turbine engine drag test method, which comprises the following specific steps:
acquiring working state information of each part of an engine;
and controlling the fuel injector of the engine not to inject fuel, controlling the ignition coil of the engine not to ignite and controlling the throttle valve to keep fully open according to the working state information.
In order to further optimize the technical scheme, the specific steps of acquiring the working state information of each part of the engine are as follows:
the method comprises the steps that a sensor obtains state signals of all parts of an engine;
the state signal is subjected to digital-analog change and is analyzed by the microcontroller to obtain the working state and the running condition of each part.
In order to further optimize the technical scheme, the oil injection working state information of the engine is collected through an oil injector on the engine, and the data are sent to an A/D converter through a circuit responsible for inputting; after the A/D converter receives the sensor data, it is converted to the microcomputer, which compares, calculates and corrects the signal from the oil injector by the stored program and data, and sends the processed result to the output circuit in the form of instruction to drive the oil injector not to inject oil.
In order to further optimize the technical scheme, the ignition coil on the engine is used for collecting the operating state information of the ignition coil of the engine, and the circuit responsible for inputting sends data to the A/D converter; after the A/D converter receives the sensor data, it is converted to microcomputer, which compares, calculates and corrects the signal from the ignition coil by the stored program and data, and sends the processed result to the output circuit in the form of instruction to drive the ignition coil to make it not ignite.
In order to further optimize the technical scheme, the throttle valve working state information of the engine is collected through a throttle valve position sensor on the engine, and a circuit responsible for input sends data to an A/D converter; after the A/D converter receives the sensor data, it is converted to the microcomputer, which compares, calculates and corrects the signal from the throttle position sensor by the stored program and data, and sends the processed result to the output circuit in the form of instruction to drive the throttle position to keep full open.
Further, the test principle is as follows:
starting the motor;
the belt pulley of the motor drives the belt, the belt drags the belt pulley of the engine to rotate synchronously, and the engine is in a running state at the moment.
The electronic control unit sets that the engine does not inject oil or ignite, and the fuel pressure in the high-pressure fuel rail is in a no-pressure-relief state, so that the fuel pressure in the high-pressure fuel rail can reach the maximum design pressure; the throttle valve is fully opened, so that when the engine is in an air suction stroke, the negative pressure in the cylinder can not suck engine oil below a piston ring into the cylinder.
Another embodiment of the present invention discloses a turbine engine drag-over test system, as shown in fig. 1, comprising:
the platform device comprises a supporting chassis 101, a supporting plate 102 and a movable slide rail 103.
The supporting chassis 101 is disposed at the lower end of the supporting plate 102, and mainly plays a supporting role.
The movable sliding rail 103 supporting four-way adjustment is arranged at the upper end of the supporting plate 102, so that the position of the motor 201 and the tension of the belt 301 can be conveniently adjusted.
The motor comprises a motor 201 and a motor pulley 202.
The motor pulley 202 is mounted on the motor 201. The motor 201 is mounted on the supporting four-way adjusting moving slide 103.
The belt 301 is connected with the motor pulley 202 and the tested engine pulley 401, and the movable sliding rail 103 is adjusted to install the belt 301 in place.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. A turbine engine drag test method is characterized by comprising the following specific steps:
acquiring working state information of each part of an engine;
and controlling the engine fuel injector not to inject fuel, controlling the engine ignition coil not to ignite and controlling the throttle valve to keep fully open according to the working state information.
2. The turbine engine drag-over test method according to claim 1, wherein the specific steps of obtaining the working state information of each part of the engine are as follows:
the method comprises the steps that a sensor obtains state signals of all parts of an engine;
the state signal is subjected to digital-analog change and is analyzed by the microcontroller to obtain the working state and the running condition of each part.
3. The turbine engine drag-over test method according to claim 2, characterized in that the information of the injection working state of the engine is collected by an injector on the engine, and the data is sent to the A/D converter by a circuit responsible for inputting; after the A/D converter receives the sensor data, it is converted to the microcomputer, which compares, calculates and corrects the signal from the oil injector by the stored program and data, and sends the processed result to the output circuit in the form of instruction to drive the oil injector not to inject oil.
4. The turbine engine drag-over test method according to claim 2, wherein the ignition coil operating state information of the engine is collected by the ignition coil on the engine, and the data is sent to the a/D converter by the circuit responsible for inputting; after the A/D converter receives the sensor data, it is converted to microcomputer, which compares, calculates and corrects the signal from the ignition coil by the stored program and data, and sends the processed result to the output circuit in the form of instruction to drive the ignition coil to make it not ignite.
5. The method of claim 2, wherein the information about the operating state of the throttle valve of the engine is collected by a throttle valve position sensor on the engine, and the data is sent to the A/D converter by the circuit responsible for inputting; after the A/D converter receives the sensor data, it is converted to the microcomputer, which compares, calculates and corrects the signal from the throttle position sensor by the stored program and data, and sends the processed result to the output circuit in the form of instruction to drive the throttle position to keep full open.
6. A turbine engine drag-over test system, comprising: the device comprises a platform device, a motor, a belt and an electronic control unit; the belt drags the engine belt pulley and the motor belt pulley to synchronously rotate, and the platform device adjusts the distance between the motor and the tension degree of the belt; the electronic control unit controls the engine fuel injector not to inject fuel, controls the engine ignition coil not to ignite and controls the throttle valve to keep fully open.
7. The turbine engine drag-down testing system of claim 6, wherein said platform assembly comprises a support chassis, a support plate, a movable slide; the supporting underframe is arranged at the lower end of the supporting plate; the movable slide rail is arranged on the supporting plate; the motor moves on the movable slide rail.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210301785.0A CN114636563A (en) | 2022-03-24 | 2022-03-24 | Turbine engine drag-down test method and system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210301785.0A CN114636563A (en) | 2022-03-24 | 2022-03-24 | Turbine engine drag-down test method and system |
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| CN114636563A true CN114636563A (en) | 2022-06-17 |
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| CN202210301785.0A Pending CN114636563A (en) | 2022-03-24 | 2022-03-24 | Turbine engine drag-down test method and system |
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Citations (6)
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| JPH0960551A (en) * | 1995-06-12 | 1997-03-04 | Mazda Motor Corp | Method and device for detecting load of diesel engine and control device using these method and device |
| CN107389237A (en) * | 2017-08-18 | 2017-11-24 | 奇瑞汽车股份有限公司 | Measure the method and device of in-cylinder direct fuel-injection engine fuel pump power consumption under different loads |
| CN107884199A (en) * | 2017-12-01 | 2018-04-06 | 西华大学 | A kind of single-cylinder engine platform experiment system and its control method for carrying towing astern function |
| CN111811821A (en) * | 2020-07-20 | 2020-10-23 | 湖北汽车工业学院 | Matching and calibration test method and system for three-cylinder engine of small racing car |
| CN112284739A (en) * | 2020-10-15 | 2021-01-29 | 上海柴油机股份有限公司 | Zero-rotation-speed oil sprayer testing method for engine cold test |
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2022
- 2022-03-24 CN CN202210301785.0A patent/CN114636563A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0960551A (en) * | 1995-06-12 | 1997-03-04 | Mazda Motor Corp | Method and device for detecting load of diesel engine and control device using these method and device |
| CN107389237A (en) * | 2017-08-18 | 2017-11-24 | 奇瑞汽车股份有限公司 | Measure the method and device of in-cylinder direct fuel-injection engine fuel pump power consumption under different loads |
| CN107884199A (en) * | 2017-12-01 | 2018-04-06 | 西华大学 | A kind of single-cylinder engine platform experiment system and its control method for carrying towing astern function |
| CN111811821A (en) * | 2020-07-20 | 2020-10-23 | 湖北汽车工业学院 | Matching and calibration test method and system for three-cylinder engine of small racing car |
| CN112284739A (en) * | 2020-10-15 | 2021-01-29 | 上海柴油机股份有限公司 | Zero-rotation-speed oil sprayer testing method for engine cold test |
| CN113405746A (en) * | 2021-06-30 | 2021-09-17 | 东风商用车有限公司 | Leakage fault diagnosis method and device for oil rail pressure release valve |
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