CN103207083B - A kind of method and device analyzing turbine efficiency - Google Patents
A kind of method and device analyzing turbine efficiency Download PDFInfo
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- CN103207083B CN103207083B CN201210585239.0A CN201210585239A CN103207083B CN 103207083 B CN103207083 B CN 103207083B CN 201210585239 A CN201210585239 A CN 201210585239A CN 103207083 B CN103207083 B CN 103207083B
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- 238000012360 testing method Methods 0.000 claims abstract description 88
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- 238000004458 analytical method Methods 0.000 claims abstract description 35
- 238000004088 simulation Methods 0.000 claims abstract description 23
- 230000013011 mating Effects 0.000 claims abstract description 11
- 238000010586 diagram Methods 0.000 description 9
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Abstract
The embodiment of the invention discloses a kind of method and the device of analyzing turbine efficiency, its method comprises: the diesel engine choosing any one type; Carry out bench test to any one supercharger mated with described diesel engine to calculate and test turbine efficiency value; According to one dimension thermodynamics emulation tool, simulation analysis is carried out to described supercharger and calculate emulation turbine efficiency value; Calculate described emulation turbine efficiency value and the ratio testing turbine efficiency value, described ratio is turbine efficiency correction factor; The test turbine efficiency value of the supercharger of the described turbine efficiency correction factor pair other types of mating with described diesel engine is utilized to carry out turbine efficiency correction.The present invention can save analysis time, improves the efficiency analyzing turbine.
Description
Technical field
The present invention relates to mechanical field, particularly relate to a kind of method and the device of analyzing turbine efficiency.
Background technology
Turbosupercharger is one of critical component of engine, and it is made up of pneumatic plant and turbine two parts, and wherein, the quality of turbine match can produce vital impact to the performance of engine.In the diesel engine adopting pulse type gas exhausting, due to the impact of pulse effects, add pulse energy part according to the test data that bench test obtains, the turbine efficiency value causing utilizing this test data to calculate further is inaccurate, even can substantial deviation actual value.When utilizing inaccurate turbine efficiency value to compare with turbine MAP, also cannot accurately determine turbine match effect, and then also can affect the performance of engine.So-called turbine MAP is the curve map that turbosupercharger producer generates with the relation between corresponding efficiency and rotating speed according to different flow, different die swell ratio after exploitation.
Pass through one dimension thermodynamics emulation tool at present in the mode of mathematical modeling, can analyze the characteristic of diesel engine overall performance and each subsystem, then calculate turbine efficiency value by software, the turbine efficiency value calculated in this manner can get rid of the impact of pulse effects.Further, when this turbine efficiency value and turbine MAP being compared, also this turbine match effect can be judged exactly.
But, for the turbine of the every a turbosupercharger that identical diesel engine mates, all to carry out analytical calculation by one dimension thermodynamics emulation tool in the mode of mathematical modeling and just can obtain useful turbine efficiency value, due to whole mathematical modeling and simulation process need manual maintenance, and analytical calculation process is consuming time longer, so adopt the turbine efficiency value of prior art to turbosupercharger in enormous quantities to carry out detecting the engineering that analysis will be a very huge cost consuming time.
Summary of the invention
In order to solve the problem, the object of the invention is to provide a kind of method and the device of analyzing turbine efficiency, and the turbine efficiency value that can solve for turbosupercharger in enormous quantities detects analysis, and the problem of cost consuming time, improves the analysis efficiency of turbine efficiency.
The invention provides a kind of method analyzing turbine efficiency, comprising:
Choose the diesel engine of any one type, from the supercharger of each type of mating with described diesel engine, choose arbitrarily the supercharger of a type;
Bench test is carried out to the supercharger of selected type, calculates the test turbine efficiency value of the supercharger of selected type;
According to one dimension thermodynamics emulation tool, simulation analysis is carried out to the supercharger of selected type, calculate the emulation turbine efficiency value of the supercharger of selected type;
Calculate described emulation turbine efficiency value and the ratio testing turbine efficiency value, described ratio is turbine efficiency correction factor;
The test turbine efficiency value of described turbine efficiency correction factor to the supercharger of other type except selected type is utilized to revise.
Preferably, the described test turbine efficiency value of described turbine efficiency correction factor to the supercharger of other type except selected type that utilize carries out turbine efficiency correction, comprising:
Bench test is carried out to the supercharger of other type except selected type, calculates the test turbine efficiency value of the supercharger of other type;
Calculate the product value between the test turbine efficiency value of the supercharger of other type described and described turbine efficiency correction factor successively, described product value is revised turbine efficiency value.
Preferably, describedly utilize after the test turbine efficiency value of described turbine efficiency correction factor to the supercharger of other type except selected type revise, also comprise:
Revised turbine efficiency value and turbine MAP are analyzed, judge the matching effect of turbine.
Present invention also offers a kind of device analyzing turbine efficiency, comprising:
Choosing module, for choosing the diesel engine of any one type, from the supercharger of each type of mating with described diesel engine, choosing arbitrarily the supercharger of a type;
Bench test module, for carrying out bench test to the supercharger of selected type, calculates the test turbine efficiency value of the supercharger of selected type;
Simulation analysis module, for carrying out simulation analysis according to one dimension thermodynamics emulation tool to the supercharger of selected type, calculates the emulation turbine efficiency value of the supercharger of selected type;
Computing module, for calculating described emulation turbine efficiency value and the ratio testing turbine efficiency value, described ratio is turbine efficiency correction factor;
Correcting module, revises for utilizing the test turbine efficiency value of described turbine efficiency correction factor to the supercharger of other type except selected type.
Preferably, described correcting module, comprising:
Bench test submodule, for carrying out bench test to the supercharger of other type except selected type, calculates the test turbine efficiency value of the supercharger of other type;
Calculating sub module, for calculating the product value between the test turbine efficiency of the supercharger of other type described and described turbine efficiency correction factor successively, described product value is revised turbine efficiency value.
Preferably, also comprise:
Judge module, for revised turbine efficiency value and turbine MAP being analyzed, judges the matching effect of turbine.
Can find out that a kind of method analyzing turbine efficiency provided by the invention by choosing the diesel engine of any one type, can choose arbitrarily the supercharger of a type from the supercharger of each type of mating with described diesel engine by above-described embodiment; Bench test is carried out to the supercharger of selected type, calculates the test turbine efficiency value of the supercharger of selected type; According to one dimension thermodynamics emulation tool, simulation analysis is carried out to the supercharger of selected type, calculate the emulation turbine efficiency value of the supercharger of selected type; Calculate described emulation turbine efficiency value and the ratio testing turbine efficiency value, described ratio is turbine efficiency correction factor; Namely only need to carry out a simulation analysis, and repeatedly bench test is calculated, just can realize carrying out turbine efficiency analysis to other superchargers mated with same engine, save the plenty of time, improve turbine analysis efficiency.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of method flow diagram analyzing turbine efficiency that the embodiment of the present invention one discloses;
Fig. 2 is a kind of method flow diagram analyzing turbine efficiency that the embodiment of the present invention two discloses;
Fig. 3 is a kind of apparatus structure schematic diagram analyzing turbine efficiency that the embodiment of the present invention three discloses;
Fig. 4 is a kind of apparatus structure schematic diagram analyzing turbine efficiency that the embodiment of the present invention four discloses;
Fig. 5 be adopt prior art do not eliminate turbine efficiency and the turbine MAP that pulse energy calculates compare schematic diagram;
Fig. 6 be adopt method of the present invention through revised turbine efficiency and turbine MAP compare schematic diagram.
Embodiment
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, are described in detail the embodiment of the present invention below in conjunction with accompanying drawing.
It should be noted that turbosupercharger is one of critical component of engine, comprise pneumatic plant and turbine two parts, exhaust energy is converted into by the expansion of waste gas in turbine the energy that turbine rotates, and drive pneumatic plant to rotate further by the axle between pneumatic plant and turbine, thus reach increase admission pressure, and then increase air inflow improves diesel engine performance.
The MAP of pneumatic plant MAP and turbine is that its performance can be made and comprises efficiency corresponding to different flow, different die swell ratio and rotating speed makes mutually corresponding curve by supercharger producer usually after supercharger has been developed.
Embodiment one
The invention provides a kind of method analyzing turbine efficiency, specifically method flow diagram as shown in Figure 1, comprising:
Step 101: the diesel engine choosing any one type, chooses arbitrarily the supercharger of a type from the supercharger of each type of mating with described diesel engine;
Step 102: carry out bench test to the supercharger of selected type, calculates the test turbine efficiency value of the supercharger of selected type;
Step 103: carry out simulation analysis to the supercharger of selected type according to one dimension thermodynamics emulation tool, calculates the emulation turbine efficiency value of the supercharger of selected type;
Step 104: calculate described emulation turbine efficiency value and the ratio testing turbine efficiency value, described ratio is turbine efficiency correction factor;
Step 105: utilize the test turbine efficiency value of described turbine efficiency correction factor to the supercharger of other type except selected type to revise.
Step 105, can comprise:
Bench test is carried out to the supercharger of other type except selected type, calculates the test turbine efficiency value of the supercharger of other type;
Calculate the product value between the test turbine efficiency value of the supercharger of other type described and described turbine efficiency correction factor successively, described product value is revised turbine efficiency value.
Can be found out by above-described embodiment one: a kind of method analyzing turbine efficiency provided by the invention, only need by any one supercharger mated with the diesel engine of any one type, one dimension thermodynamics emulation tool is utilized to carry out a simulation analysis, calculate emulation turbine efficiency value, just can obtain test turbine efficiency value in conjunction with bench test, calculate turbine efficiency correction factor, utilize correction factor just can revise with diesel oil and other any a superchargers of mating.Method provided by the invention avoids carries out Multi simulation running analysis, saves analysis time, improves analysis efficiency.
Embodiment two
The revised turbine efficiency value obtained in embodiment one can be utilized, the quality of turbine match is judged, to facilitate the data provided the improvement of turbine.For this reason, the invention provides enforcement two, specifically another kind as described in Figure 2 analyzes the method for turbine efficiency, comprising:
Step 201: the diesel engine choosing any one type, chooses arbitrarily the supercharger of a type from the supercharger of each type of mating with described diesel engine;
Step 202: carry out bench test to the supercharger of selected type, calculates the test turbine efficiency value of the supercharger of selected type;
Step 203: carry out simulation analysis to the supercharger of selected type according to one dimension thermodynamics emulation tool, calculates the emulation turbine efficiency value of the supercharger of selected type;
Step 204: calculate described emulation turbine efficiency value and the ratio testing turbine efficiency value, described ratio is turbine efficiency correction factor;
Step 205: utilize the test turbine efficiency value of described turbine efficiency correction factor to the supercharger of other type except selected type to revise.
Step 205, can comprise: step 205A and step 205B,
Step 205A: carry out bench test to the supercharger of other type except selected type, calculates the test turbine efficiency value of the supercharger of other type;
Step 205B: calculate the product value between the test turbine efficiency value of the supercharger of other type described and described turbine efficiency correction factor successively, described product value is revised turbine efficiency value.
Step 206: revised turbine efficiency value and turbine MAP are analyzed, judge the matching effect of turbine.
Such as specifically comprise: by revised turbine efficiency value described point in turbine MAP, be then analyzed with the efficiency value in MAP, judge the effect of turbine match.
In order to contrast the technique effect that method of the present invention produces more significantly, with the employing prior art shown in Fig. 5 do not eliminate turbine efficiency that pulse energy calculates and turbine MAP compare the turbine efficiency of the employing method of the present invention shown in schematic diagram and Fig. 6 after revising and turbine MAP compare schematic diagram.The turbine efficiency of quite a few operating point is greater than 1 as shown in Figure 5, from the definition of turbine efficiency, it is obviously impossible that efficiency is greater than 1, this phenomenon just because of in the process calculating turbine efficiency as the air-flow of molecule by the actual work of turbine in contain the pulse energy that gas exhaust piping form causes, and be not actual turbine efficiency, so the cooperation line of efficiency calculating gained is separated with the efficiency line in MAP, be difficult to judge quality and improvement direction by the distributing position of efficiency on MAP.The efficiency of turbine has returned to more normal position as shown in Figure 6, turbine efficiency obtains Approximate revision, eliminated the impact of pulse effects by the method calculating pulse shape modification coefficient after, the MAP that the efficiency travel line of turbine directly can be put into turbine compares, understands the matching effect of diesel engine and this turbine better.
By above-described embodiment two, can find out: another kind provided by the present invention analyzes the method for turbine efficiency, embodiment one basic on, according to the revised turbine efficiency value obtained, be analyzed with turbine efficiency value normal in MAP, analyze the quality of turbine match, Practical Project is of great significance.
Embodiment three
The invention provides a kind of device analyzing turbine efficiency, specifically as shown in the structural representation of Fig. 3, comprising: choose module 301, bench test module 302, simulation analysis module 303, computing module 304, correcting module 304.
Choosing module 301, for choosing the diesel engine of any one type, from the supercharger of each type of mating with described diesel engine, choosing arbitrarily the supercharger of a type;
Bench test module 302, for carrying out bench test to the supercharger of selected type, calculates the test turbine efficiency value of the supercharger of selected type;
Simulation analysis module 303, for carrying out simulation analysis according to one dimension thermodynamics emulation tool to the supercharger of selected type, calculates the emulation turbine efficiency value of the supercharger of selected type;
Computing module 304, for calculating described emulation turbine efficiency value and the ratio testing turbine efficiency value, described ratio is turbine efficiency correction factor;
Correcting module 305, revises for utilizing the test turbine efficiency value of described turbine efficiency correction factor to the supercharger of other type except selected type.
Preferably, correcting module 305 comprises: bench test submodule and calculating sub module,
Bench test submodule, for carrying out bench test to the supercharger of other type except selected type, calculates the test turbine efficiency value of the supercharger of other type;
Calculating sub module, for calculating the product value between the test turbine efficiency of the supercharger of other type described and described turbine efficiency correction factor successively, described product value is revised turbine efficiency value.
Can be found out by embodiment three: adopt a kind of device analyzing turbine efficiency provided by the present invention, an analyzing and processing is carried out by simulation analysis module, measuring and calculation is carried out again in conjunction with engine bench test module, calculate turbine efficiency correction factor by computing module, finally by correcting module, turbine efficiency correction is carried out to the supercharger of other types.Thus just can realize the turbine efficiency analysis to a large amount of turbine only by simulation analysis, improve analysis efficiency, save experimentation cost.
Embodiment four
Present invention also offers the another kind of device analyzing turbine efficiency, can realize detecting the effect of turbine match, specifically as shown in the structural representation of Fig. 4, comprising: choose module 401, bench test module 402, simulation analysis module 403, computing module 404, correcting module 405 and judge module 406.
Choosing module 401, for choosing the diesel engine of any one type, from the supercharger of each type of mating with described diesel engine, choosing arbitrarily the supercharger of a type;
Bench test module 402, for carrying out bench test to the supercharger of selected type, calculates the test turbine efficiency value of the supercharger of selected type;
Simulation analysis module 403, for carrying out simulation analysis according to one dimension thermodynamics emulation tool to the supercharger of selected type, calculates the emulation turbine efficiency value of the supercharger of selected type;
Computing module 404, for calculating described emulation turbine efficiency value and the ratio testing turbine efficiency value, described ratio is turbine efficiency correction factor;
Correcting module 405, revises for utilizing the test turbine efficiency value of described turbine efficiency correction factor to the supercharger of other type except selected type.
Preferably, correcting module 405 comprises: bench test submodule 405A and calculating sub module 405B,
Bench test submodule 405A, for carrying out bench test to the supercharger of other type except selected type, calculates the test turbine efficiency value of the supercharger of other type;
Calculating sub module 405B, for calculating the product value between the test turbine efficiency of the supercharger of other type described and described turbine efficiency correction factor successively, described product value is revised turbine efficiency value.
Judge module 406, for revised turbine efficiency value and turbine MAP being analyzed, judges the matching effect of turbine.
Can be found out by embodiment four: adopt another kind provided by the present invention to analyze the device of turbine efficiency, an analyzing and processing is carried out by simulation analysis module, measuring and calculation is carried out again in conjunction with engine bench test module, turbine efficiency correction factor is calculated by computing module, finally by correcting module, turbine efficiency correction is carried out to the supercharger of other types, judge module is finally utilized to carry out matching effect judgement to revised turbine efficiency, not only realize the turbine efficiency analysis to a large amount of turbine, improve analysis efficiency, save experimentation cost, certain turbine match effect analysis data can also be improved for practical engineering application, so that testing crew more in depth understands the direction that turbine improves.
Above a kind of turbine efficiency analytical approach provided by the present invention and device are described in detail, apply specific embodiment herein to set forth principle of the present invention and embodiment, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (6)
1. analyze a method for turbine efficiency, it is characterized in that, comprising:
Choose the diesel engine of any one type, from the supercharger of each type of mating with described diesel engine, choose arbitrarily the supercharger of a type;
Bench test is carried out to the supercharger of selected type, calculates the test turbine efficiency value of the supercharger of selected type;
According to one dimension thermodynamics emulation tool, simulation analysis is carried out to the supercharger of selected type, calculate the emulation turbine efficiency value of the supercharger of selected type;
Calculate described emulation turbine efficiency value and the ratio testing turbine efficiency value, described ratio is turbine efficiency correction factor;
The test turbine efficiency value of described turbine efficiency correction factor to the supercharger of other type except selected type is utilized to revise.
2. method according to claim 1, is characterized in that, utilizes the test turbine efficiency value of described turbine efficiency correction factor to the supercharger of other type except selected type to revise, comprising:
Bench test is carried out to the supercharger of other type except selected type, calculates the test turbine efficiency value of the supercharger of other type;
Calculate the product value between the test turbine efficiency value of the supercharger of other type described and described turbine efficiency correction factor successively, described product value is revised turbine efficiency value.
3. method according to claim 1, is characterized in that, describedly utilizes after the test turbine efficiency value of described turbine efficiency correction factor to the supercharger of other type except selected type revise, and also comprises:
Revised turbine efficiency value and turbine MAP are analyzed, judge the matching effect of turbine.
4. analyze a device for turbine efficiency, it is characterized in that, comprising:
Choosing module, for choosing the diesel engine of any one type, from the supercharger of each type of mating with described diesel engine, choosing arbitrarily the supercharger of a type;
Bench test module, for carrying out bench test to the supercharger of selected type, calculates the test turbine efficiency value of the supercharger of selected type;
Simulation analysis module, for carrying out simulation analysis according to one dimension thermodynamics emulation tool to the supercharger of selected type, calculates the emulation turbine efficiency value of the supercharger of selected type;
Computing module, for calculating described emulation turbine efficiency value and the ratio testing turbine efficiency value, described ratio is turbine efficiency correction factor;
Correcting module, revises for utilizing the test turbine efficiency value of described turbine efficiency correction factor to the supercharger of other type except selected type.
5. device according to claim 4, is characterized in that, described correcting module, comprising:
Bench test submodule, for carrying out bench test to the supercharger of other type except selected type, calculates the test turbine efficiency value of the supercharger of other type;
Calculating sub module, for calculating the product value between the test turbine efficiency value of the supercharger of other type described and described turbine efficiency correction factor successively, described product value is revised turbine efficiency value.
6. device according to claim 4, is characterized in that, also comprises:
Judge module, for revised turbine efficiency value and turbine MAP being analyzed, judges the matching effect of turbine.
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| CN109580231B (en) * | 2018-12-12 | 2020-11-06 | 中国北方发动机研究所(天津) | Test method for identifying rotating fault of pressure shell of diesel engine matched with turbocharger |
| CN110543715B (en) * | 2019-08-28 | 2021-04-27 | 东风汽车集团有限公司 | Two-stage supercharging system matching method based on simulation calculation |
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