CN116804590A - Thermal load test method for gasoline engine supercharger - Google Patents
Thermal load test method for gasoline engine supercharger Download PDFInfo
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- CN116804590A CN116804590A CN202310633943.7A CN202310633943A CN116804590A CN 116804590 A CN116804590 A CN 116804590A CN 202310633943 A CN202310633943 A CN 202310633943A CN 116804590 A CN116804590 A CN 116804590A
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- supercharger
- engine
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- test
- thermal load
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- 238000010998 test method Methods 0.000 title claims abstract description 14
- 238000012360 testing method Methods 0.000 claims abstract description 34
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000005070 sampling Methods 0.000 claims description 13
- 239000003921 oil Substances 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 7
- 239000010705 motor oil Substances 0.000 claims description 7
- 239000002826 coolant Substances 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 6
- 238000007667 floating Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000002159 abnormal effect Effects 0.000 claims description 2
- 239000000110 cooling liquid Substances 0.000 claims description 2
- 238000007405 data analysis Methods 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims description 2
- 238000010792 warming Methods 0.000 claims 1
- 238000012795 verification Methods 0.000 abstract description 6
- 238000013461 design Methods 0.000 abstract description 3
- 238000009826 distribution Methods 0.000 abstract description 3
- 238000004088 simulation Methods 0.000 abstract description 3
- 238000011161 development Methods 0.000 abstract description 2
- 238000011156 evaluation Methods 0.000 abstract description 2
- 238000011835 investigation Methods 0.000 abstract description 2
- 238000012827 research and development Methods 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000002528 anti-freeze Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
-
- 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
- G01M15/04—Testing internal-combustion engines
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Supercharger (AREA)
Abstract
A thermal load test method for a supercharger of a gasoline engine belongs to the technical field of supercharger test. The method comprises the following steps: s1: six temperature sensors are additionally arranged on the supercharger, and the supercharger is prepared before the test; s2: controlling and executing test conditions; s3: performing a test; s4: s3 is repeated at least twice. According to the invention, the temperature distribution condition of each key vulnerable part of the supercharger after the engine is stopped instantaneously at high speed and heavy load is tested, the reliability of the supercharger is judged, the damage of the supercharger caused by overlarge heat load is avoided, meanwhile, the extreme heat load experience data of the supercharger can be accumulated, the heat load condition of the supercharger after the engine is stopped suddenly is measured rapidly, and the method can be used for verification, evaluation and test in the aspects of heat resistance verification, reliability check and the like of the supercharger. The method provides an effective test method for supercharger design development, CAE simulation verification and fault investigation, provides a new direction for scientific research and development, and has good application prospect.
Description
Technical Field
The invention relates to a thermal load test method for a gasoline engine supercharger, and belongs to the technical field of supercharger tests.
Background
The main structure of the gasoline engine supercharger consists of a turbine, an impeller, a thrust bearing, a floating bearing, a sealing ring, a volute, a pressure shell and other parts. When the gasoline engine is used for carrying out a high-rotation-speed and high-load working condition test on an engine bench, the exhaust temperature is very high, and the inlet temperature of a turbine of a supercharger is very high.
If the engine suddenly stops under similar working conditions, heat can be accumulated in the turbocharger volute, engine antifreeze and engine oil stop circulation cannot cool and dissipate heat of the turbocharger, overheat coking of a turbocharger intermediate body, a bearing, a sealing ring and the like can be caused, sealing and lubrication of the turbocharger are damaged, and the turbocharger is finally damaged.
The existing supercharger after production is directly put into use, and once the supercharger is damaged due to the conditions, only a new supercharger can be replaced, so that the use cost of a user is increased.
Disclosure of Invention
In order to solve the problems in the background technology, the invention provides a thermal load test method for a gasoline engine supercharger.
The invention adopts the following technical scheme: a thermal load test method for a supercharger of a gasoline engine comprises the following steps:
s1: six temperature sensors are additionally arranged on the supercharger, and the supercharger is prepared before the test;
s2: controlling and executing test conditions;
s3: performing a test;
s4: s3 is repeated at least twice.
Compared with the prior art, the invention has the beneficial effects that:
the invention forms a thermal load test method of the gasoline engine supercharger by testing the temperature distribution condition of each key vulnerable part of the supercharger after the engine is stopped instantaneously with high speed and heavy load, judges the reliability of the supercharger by testing the thermal load condition and the heat resistance capability of each key part of the supercharger, provides powerful data for the simulation design, the manufacturing process, the material selection and the like of the supercharger, avoids the damage of the supercharger caused by the overlarge thermal load, can accumulate the extreme thermal load experience data of the supercharger, can rapidly measure the thermal load condition of the supercharger after the engine is stopped suddenly, and can be used for verification and evaluation test in the aspects of heat resistance capability verification, reliability check and the like of the supercharger. The method provides an effective test method for supercharger design development, CAE simulation verification and fault investigation, provides a new direction for scientific research and development, and has good application prospect.
Drawings
FIG. 1 is a diagram of the experimental method of the present invention;
FIG. 2 is a graph of the test of the present invention.
Detailed Description
The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the invention, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present invention are all within the protection scope of the present invention.
A thermal load test method for a supercharger of a gasoline engine comprises the following steps:
s1: six temperature sensors are additionally arranged on the supercharger, and the installation positions of the six temperature sensors are respectively as follows: the oil return cavity comprises a vortex end floating bearing surface, a lower part of a vortex end piston ring, an upper part of the vortex end piston ring, a pressure end floating bearing, an oil return port and an oil return cavity. And performing preparation before the test, wherein the preparation comprises the following steps: the modified supercharger is restored to the test engine, and the engine is arranged on the test stand, so that the engine and the test stand work normally, the engine has no water leakage, oil leakage and air leakage, and can be started normally and smoothly;
s2: executing test conditions according to the GB/T18297-2001 rule 6;
s3: performing a test;
s301: starting the engine, checking the idling stability of the engine, and after confirming that various states of the engine are not abnormal, carrying out warm-up, wherein the warm-up working condition is that the engine speed is 2500r/min and the load is 20%;
s302: when the temperature of the engine cooling liquid and the temperature of the engine oil reach 90 ℃, finishing the warm-up;
s303: adjusting the rotating speed of the engine to a rated rotating speed point, and stably operating the engine for not less than 10 minutes after 100% of load is applied;
s304: after the measured values of six temperature sensors additionally arranged on the supercharger are stable for 3 minutes, starting to record test data of the current engine operation process, and starting second sampling measurement, wherein the second sampling frequency is 1Hz;
s30401: data recording
Data seconds acquisition records include, but are not limited to, the following parameters:
engine speed, engine torque, coolant inlet temperature, coolant outlet temperature, coolant inlet pressure, engine oil temperature, engine oil pressure, pre-vortex temperature, post-vortex temperature, pre-vortex pressure, post-vortex pressure, intake manifold temperature, intake manifold pressure, post-air filtration temperature pressure drop, supercharger intermediate six-site measurement point temperature, and the like;
s30402: data analysis
And drawing a thermal load test curve of the supercharger according to a second sampling result of test sampling, and observing the six temperature trends of the intermediate.
Through the graph of fig. 2, the trend of six temperature measuring points can be intuitively represented, and the heat load distribution condition of the supercharger can be intuitively judged.
S305: after 1 minute of second sampling, immediately closing a laboratory air-sending exhaust fan, a cooling fan and a water cooling equipment circulating system, and reducing the engine to an idle state within 10 seconds;
s306: the engine is stopped immediately after idling for 5 seconds;
s307: after six temperature sensor measured values added on the supercharger steadily decrease to be below the stable temperature value in S304, continuing waiting for 1 minute, and stopping second sampling measurement;
s308: the engine was stopped and cooled for 30 minutes.
S4: s3 is repeated at least twice.
Notes during the test:
a) Operating the engine strictly according to the working conditions;
b) In the process of remanufacturing and installing a temperature sensor, the surface of the supercharger is prevented from being damaged, and oil leakage and air leakage faults are avoided;
c) In the test process, the second sampling test requirement is strictly executed, and interruption is not allowed;
d) After the test is finished, the air-supplying and exhausting, cooling fan and water-cooling circulating system of the laboratory are started immediately to assist the engine in cooling, so that the engine is prevented from being damaged.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (4)
1. A thermal load test method for a gasoline engine supercharger is characterized by comprising the following steps of: the method comprises the following steps:
s1: six temperature sensors are additionally arranged on the supercharger, and the supercharger is prepared before the test;
s2: controlling and executing test conditions;
s3: performing a test;
s4: s3 is repeated at least twice.
2. The method for testing the thermal load of the supercharger of the gasoline engine according to claim 1, wherein the method comprises the following steps: the installation positions of the six temperature sensors are respectively as follows: the oil return cavity comprises a vortex end floating bearing surface, a lower part of a vortex end piston ring, an upper part of the vortex end piston ring, a pressure end floating bearing, an oil return port and an oil return cavity.
3. The thermal load test method for the supercharger of the gasoline engine according to claim 1 or 2, wherein the thermal load test method comprises the following steps: the step S3 comprises the following steps:
s301: starting the engine, checking the idling stability of the engine, and carrying out warming up after confirming that various states of the engine are not abnormal;
s302: when the temperature of the engine cooling liquid and the temperature of the engine oil reach 90 ℃, finishing the warm-up;
s303: adjusting the rotating speed of the engine to a rated rotating speed point, and stably operating the engine for not less than 10 minutes after 100% of load is applied;
s304: after the measured values of six temperature sensors additionally arranged on the supercharger are stable for 3 minutes, starting to record test data of the current engine operation process, and starting second sampling measurement, wherein the second sampling frequency is 1Hz;
s305: after 1 minute of second sampling, immediately closing a laboratory air-sending exhaust fan, a cooling fan and a water cooling equipment circulating system, and reducing the engine to an idle state within 10 seconds;
s306: the engine is stopped immediately after idling for 5 seconds;
s307: after six temperature sensor measured values added on the supercharger steadily decrease to be below the stable temperature value in S304, continuing waiting for 1 minute, and stopping second sampling measurement;
s308: the engine was stopped and cooled for 30 minutes.
4. A gasoline engine supercharger thermal load test method according to claim 3, wherein: the data recording in S304 includes the following steps:
s30401: data recording
The data second acquisition record at least comprises the following parameters:
engine speed, engine torque, coolant inlet temperature, coolant outlet temperature, coolant inlet pressure, engine oil temperature, engine oil pressure, pre-vortex temperature, post-vortex temperature, pre-vortex pressure, post-vortex pressure, intake manifold temperature, intake manifold pressure, post-air filtration temperature pressure drop, supercharger intermediate six-site measurement point temperature, and the like;
s30402: data analysis
And drawing a thermal load test curve of the supercharger according to a second sampling result of test sampling, and observing the six temperature trends of the intermediate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310633943.7A CN116804590A (en) | 2023-05-31 | 2023-05-31 | Thermal load test method for gasoline engine supercharger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310633943.7A CN116804590A (en) | 2023-05-31 | 2023-05-31 | Thermal load test method for gasoline engine supercharger |
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| Publication Number | Publication Date |
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| CN116804590A true CN116804590A (en) | 2023-09-26 |
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| CN202310633943.7A Pending CN116804590A (en) | 2023-05-31 | 2023-05-31 | Thermal load test method for gasoline engine supercharger |
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| CN (1) | CN116804590A (en) |
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2023
- 2023-05-31 CN CN202310633943.7A patent/CN116804590A/en active Pending
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