CN102053039B - Engine body hydraulic fatigue test system - Google Patents

Engine body hydraulic fatigue test system Download PDF

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Publication number
CN102053039B
CN102053039B CN2010105902846A CN201010590284A CN102053039B CN 102053039 B CN102053039 B CN 102053039B CN 2010105902846 A CN2010105902846 A CN 2010105902846A CN 201010590284 A CN201010590284 A CN 201010590284A CN 102053039 B CN102053039 B CN 102053039B
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hydraulic
engine
test
pressure
fatigue test
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CN2010105902846A
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CN102053039A (en
Inventor
刘震涛
张鹏伟
刘宏瑞
沈瑜铭
齐放
俞小莉
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Zhejiang University ZJU
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Zhejiang University ZJU
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Abstract

The invention relates to equipment used for an engine test and aims at providing an engine body hydraulic fatigue test system. The system comprises a hydraulic pump station, a hydraulic pulse loading mechanism, a signal measuring and monitoring system and a control system, wherein the hydraulic pulse loading mechanism comprises a hydraulic common-rail module, a hydraulic servo solenoid valve, a hydraulic amplifier and a hydraulic cylinder which are sequentially connected, and the hydraulic cylinder is connected with an engine body to be tested. The engine body hydraulic fatigue test system provided by the invention can be used to substitute the traditional real engine evaluation on engine body fatigue so that test cost is greatly saved, and single cylinder loading and multi-cylinder loading on the engine body are realized. The engine body hydraulic fatigue test system not only can be applied to an engine body fatigue test but also can be applied to an engine parts static loading test, thus realizing the diversification of functions.

Description

The engine body hydraulic fatigue test system
Technical field
The present invention relates to a kind of equipment that is used for engine test, particularly a kind of pilot system that the engine body fatigue properties are detected that loads with hydraulic pressure.
Background technology
Body is the skeleton of whole engine, supports and fixing all parts, and structure and load condition are very complicated.The structure of body comprises cylinder block, crankcase and base for supporting (or oil sump).It is the complicated box-shaped shell structure that there are a lot of dividing plates an inside; Motorized cylinder head on it, crankshaft connecting rod system, all annex and accessory drive gear; On this architecture basics, arranged various reinforcements, and lubricated, the cooling of heated part of various movement parts and the fixed installation of engine realize through body all also according to the requirement of its strength and stiffness.
Body bears very complicated load when engine running: each gas in the jar is to the gaseous tension that is uniformly distributed with of cylinder head bottom surface and cylinder surface; Through the wall pressure of piston action in each cylinder wall; Be added in the power on each main bearing through bent axle, support is to the bearing reaction and the counter torque of engine.The size of these power, direction constantly change with operating mode and crank angle, and the application point of some power is also in continuous variation.In addition, even when engine does not turn round, each cylinder head bolt, Main bearing bolt also make fastened part stressed.More than various power and moment make each several part receive the tension and compression bending of alternation, produce complicated stress state.
Along with the trend of lightweight and high load capacityization in the present engine design, the body functional reliability obtains increasing concern.The purpose of research body fatigue properties is: guarantee engine operate as normal, avoid design because of laying particular stress on the safety waste material.
The method of confirming the organism fatigue characteristic is nothing more than two types.The one, utilize simulation or model experiment so that the real machine test of part is confirmed, the 2nd, utilize and calculate to confirm that these two kinds of methods complement one another.In actual engineering, computing method itself need and provide the boundary condition of separating surely through verification experimental verification, and test is because its precision also often need draw more detailed and comprehensive result through computational analysis with the work quantitative limitation.
Summary of the invention
The technical matters that the present invention will solve is, overcomes deficiency of the prior art, and a kind of engine body hydraulic fatigue test system is provided, and promptly loads the pilot system that the engine body fatigue properties are detected with hydraulic pressure.
For solving this technical problem, technical scheme of the present invention is:
A kind of engine body hydraulic fatigue test system is provided, comprises hydraulic power unit, also comprise hydraulic impulse load maintainer, signal measurement and monitoring system, control system; Wherein, said hydraulic impulse load maintainer comprises that the hydraulic pressure that connects successively is total to rail module, hydraulic servo solenoid valve, hydraulic amplifier and hydraulic jack, and hydraulic jack links to each other with engine body to be measured; Said signal measurement comprises foil gauge, strainmeter, the strain module that is electrically connected successively with monitoring system, and the pressure transducer and the AD module that are electrically connected, and strain module and AD module all are connected to host computer through slave computer; Said control system comprises aforementioned slave computer and host computer, and wherein slave computer is for adopting the CRIO controller of America NI company, and host computer is the PC of built-in data storage analytic system; Slave computer is connected to hydraulic pressure rail module, hydraulic amplifier and hydraulic servo solenoid valve altogether respectively through signal wire.
Hydraulic pressure altogether rail module is one and has the exit passageway that one road high-pressure oil passage intake vent and multichannel are connected with the hydraulic servo solenoid valve, and the metal module (its cavity volume size should be complementary with the flow of whole hydraulic system) with certain cavity volume.Major function is the pressure in the stable hydraulic loop, eliminates the pressure surge in the loop, and accomplishes high-pressure oil passage and a plurality of hydraulic servo solenoid valve UNICOM.
Among the present invention, also comprise high pressure accumulator and low pressure accumulator; Said hydraulic servo solenoid valve is a three-position four-way valve, and under the different keying state of valve, valve internal passage and the hydraulic pressure inner passage of rail module are altogether formed high-pressure oil passage and low pressure oil circuit respectively; Said high pressure accumulator is communicated with high-pressure oil passage, and low pressure accumulator is communicated with the low pressure oil circuit, can be connected to the hydraulic pressure two ends of rail module altogether respectively.
Among the present invention, also comprise a mechanical stage body that is used to carry engine body to be measured; This machinery stage body comprises support, handle, jig arm, guide rail, reductor, gear train and caster, can realize moving horizontally and overturning of engine body.
Among the present invention, also have safety and warning system, comprise be used for detecting that hydraulic fluid leak, line clogging, oil tank liquid level, fuel tank temperature, on-load pressure are undesired, test test specimen fatigure failure or test at least one of overtime alarm detecting unit; Alarm detecting unit is connected to host computer through slave computer, and slave computer also is connected to total control switch through signal wire simultaneously.
Among the present invention, when said pilot system makes an experiment to engine body to be measured, simulation piston rod, simulation bent axle and main bearing base are housed on engine body to be measured, all bolted Bolt Torque are all identical with real engine assembling moment.
Among the present invention, when said pilot system made an experiment to engine body to be measured, hydraulic jack was positioned on the engine body to be measured and is fixed together, and Bolt Torque is identical with real engine cylinder cap assembling moment.
Among the present invention, when said pilot system makes an experiment to engine body to be measured, on the simulation piston rod with on the test cylinder (jar) main bearing seat foil gauge is being installed, this foil gauge is electrically connected strainmeter and strain module successively, and is connected to host computer through slave computer.Can carry out strain acquirement through the signal acquiring system of strainmeter and America NI company during practice; The strain signal that utilization is gathered promptly judges through the strain variation of monitoring test engine body whether body cracks the generation fatigure failure as the criterion of the fatigure failure of test engine body.
Among the present invention; Be built-in with a data storage and analytic system in the said host computer; Adopt the Labview software programming to accomplish, the signal data of collection is stored and is analyzed to host computer through signal wire transmits by following level controller (the CRIO controller of America NI company).
Among the present invention, the hydraulic pressure that the common rail module of said hydraulic pressure is six passages is the rail module altogether, has six road hydraulic servo solenoid valves and is attached thereto.Can realize controlling six road hydraulic servo solenoid valves and corresponding hydraulic amplifier realizes the single cylinder of body is loaded and multi-cylinder loading (can load six cylinders simultaneously at most).
Pilot system can be set different loading frequencies, loaded load size and load waveform (sine wave, triangular wave, square wave) when engine body is loaded according to test engine.Both the engine body torture test can be used for, the engine component static test can be used for again.
Beneficial effect of the present invention is:
The present invention can replace present real machine examination work to organism fatigue, has practiced thrift experimentation cost greatly.
The present invention can realize the single cylinder of body and multi-cylinder are loaded.Aspect the engine body torture test, mainly only carry out the single cylinder load test at present; Again through calculating the fatigue properties of each cylinder; There is significant limitation in test itself like this, can not simulate the suffered load of real engine body, can not carry out the comparison of fatigue strength simultaneously to each cylinder.The mode that loads through single cylinder and multi-cylinder can remedy above limitation, improves the accuracy of test.
The strain signal that the pilot system employing is gathered is as the criterion of the fatigure failure of test engine body.Make test specimen accomplish specify loaded cycle mainly adopting aspect the engine body torture test at present; Testing crew finishes to check in back inspection crackle or the loading method of crackle, because the organism fatigue that the characteristic that crackle produces causes this method to be reacted destroys and truly destroy the time that produces bigger error is arranged.This pilot system, through real-time monitoring test specimen strain variation, can be in the generation of time internal reaction test specimen fatigure failure more accurately.
This experimental system both can be used for the engine body torture test, can be used for the engine component static test again, had realized functional diversities.
Description of drawings
Fig. 1 is the pilot system synoptic diagram;
Fig. 2 machinery stage body synoptic diagram;
Fig. 3 hydraulic impulse load maintainer synoptic diagram;
Fig. 4 control system functional block diagram.
Reference numeral among the figure:
1 hydraulic power unit, 2 high pressure accumulators, 3 hydraulic servo solenoid valves, 4 are rail module, 5 low pressure accumulators, 6 hydraulic amplifiers, 7 hydraulic cylinders altogether; 8 gear trains, 9 handles, 10 speed reduction units, 11 supports, 12 guide rails, 13 casters, 14 jig arm; 15 retaining valves, 16 surplus valves, 17 retaining valves, 18 oil filters, 19 oil filters, 20 motor, 21 fuel tanks.
Embodiment
Below in conjunction with accompanying drawing, specific embodiments of the invention is carried out detailed presentations.
One, the overall formation of engine body hydraulic fatigue test system
Testing table is made up of test-bed and control system two big parts.According to the function branch, it comprises: hydraulic power unit 1, hydraulic impulse load maintainer, mechanical stage body, signal measurement and monitoring system, control system, safety and warning system, data storage analytic system etc.Pilot system is as shown in Figure 1.
Two, the pilot system each several part is introduced
1, hydraulic power unit
As shown in Figure 3, hydraulic power unit 1 main effect is for system provides hydraulic power, and the hydraulic oil of certain pressure, certain flow is provided to hydraulic loaded mechanism.But the hydraulic power unit of this pilot system to be pressure flow compound off-load constant pressure variable displacement pump that the control ram pump constitutes, under the driving of motor 20, hydraulic power unit 1 provides pressure oil by oil suction in the fuel tank 21 to the common rail valve group.
2, hydraulic impulse load maintainer
Like Fig. 1, shown in 3, the hydraulic impulse load maintainer comprises that mainly common rail module 4, six road hydraulic servo solenoid valves 3, hydraulic amplifier 6, hydraulic jack 7, high pressure accumulator 2 and low pressure accumulator 5 form.
Rail module 4 and high pressure accumulator 2 and low pressure accumulator 5 decomposition pressure systems stabilisations keep certain on-load pressure altogether, and wherein high pressure accumulator 2 is positioned at high-pressure oil passage, and low pressure accumulator 5 is positioned at the low pressure oil circuit; The hydraulic servo solenoid valve is a three-position four-way valve; Wherein P is that high-pressure oil passage, T are that oil return circuit, A are loading oil circuit, the sealing of X road; Hydraulic oil entering hydraulic cylinder loaded when P was communicated with A, and the hydraulic cylinder oil return was to the low pressure oil circuit when T was communicated with A, and P or T and X are in closed state when connecting; Hydraulic amplifier is used for the amplification to hydraulic pressure, so that bigger loaded load to be provided; Hydraulic jack is carried out the loading to engine body.
The practical implementation process is: hydraulic power unit 1 is under the drive of motor 20; Oil suction from fuel tank 21; Produce hydraulic oil; Hydraulic oil gets into high-pressure oil passage (when this moment, the hydraulic oil hypertonia surpassed the set pressure of surplus valve 16, surplus valve 16 was opened, and hydraulic oil flows back to fuel tank 21 through oil filter 18) through oil filter 19 and retaining valve 15; High pressure accumulator 2 links to each other with high-pressure oil passage, stable high voltage oil circuit internal pressure; When the hydraulic servo solenoid valve (the abridged solenoid valve is the same with other solenoid valve among the figure) in the appointment six tunnel loaded, solenoid valve was connected P and A paths, and hydraulic pressure amplifies through hydraulic amplifier 6, is loaded on the engine body by hydraulic cylinder 7; Behind the loaded, T and A connect, and the hydraulic cylinder oil return is to the low pressure oil circuit; Low pressure oil flow back into fuel tank 21 through retaining valve 17 and oil filter.
Can be implemented in the control of loading frequency in the loading procedure, loaded load, loading waveform through control to hydraulic servo solenoid valve and hydraulic circuit pressure.
3, mechanical stage body
As shown in Figure 2, mechanical stage body comprises support 11, handle 9, jig arm 14, guide rail 12, speed reduction unit 10, gear train 8 and caster 13.Jig arm 14 can move along guide rail 12, adjusts according to the test specimen size, test specimen is clamped between back jig arm and test specimen be connected with bolt, and each jig arm has three coupling bolts.Whole stage body has four casters, can move horizontally through caster 13, also can realize the upset of test specimen through turning handle 9.
In the test set-up procedure, clamp test specimen with jig arm 14, through moving stage body, the upset test specimen is accomplished the assembling with other testing equipments again; During test, forward the engine body test specimen to normal horizontal level, hydraulic jack is installed above.
4, signal measurement and monitoring system
The signal measurement of this pilot system mainly is divided into the measurement of strain signal and the measurement and the monitoring of monitoring and pressure signal with monitoring.For strain signal, accomplish through 9237 strain acquirement modules, slave computer (CRIO controller) and the host computer (PC) of foil gauge, strainmeter and America NI company.For pressure signal, accomplish through 9201AD module, slave computer (CRIO controller) and the host computer (PC) of pressure transducer, America NI company.The signal of being gathered connects host computer and the next control computer successively through signal wire.
For the monitoring of strain signal, be mainly used in judgement to the fatigure failure of body test specimen, after strain variation exceeded predetermined scope continuously, body test specimen generation fatigure failure will be judged by system.For the monitoring of pressure signal, the one, for load is carried out FEEDBACK CONTROL, the one, in order to occur reporting to the police, shut down when unusual.
5, control system
The control system functional block diagram of hydraulic fatigue test rig is as shown in Figure 4; Native system adopts the upper and lower computer structure; Host computer is a PC, and following level controller adopts the embedded controller CRIO9004 of America NI company, and it comprises a real-time controller and 3,000,000 reconfigurable field programmable gate arrays (FPGA) chip; And comprise 8 hot plug industry I/O slots, can realize easily the measurement of signals such as strain, pressure and the control output of servo-valve.
In the process of the test, slave computer shows, stores, analyzes to host computer signal communications such as the strain in the control procedure, pressure for host computer; Host computer is communicated by letter controlled variable (comprising the FPGA program) to slave computer again, through slave computer control hydraulic loading system and security alerting system.The The whole control program is accomplished based on the LabVIEW development platform of NI company, has higher reliability and accuracy.
6, safety and warning system
Carry out for the safety of warranty test, pilot system is provided with multiple warning device.Mainly contain: hydraulic fluid leak, line clogging, oil tank liquid level, fuel tank temperature, on-load pressure, the fatigure failure of test test specimen, test are overtime.When appearance was unusual, warning system was carried out fault alarm, and cuts off the pilot system power supply automatically, stops all actions of total system, and on PC, shows fault category.
7, data storage analytic system
All measurement result in the test comprises final test findings, all is stored in the host computer appointed positions.The management of data is all carried out in database in the upper computer software, both has been convenient to operation, has also guaranteed safety of data.Data manipulation generates two files, and one is Test Information, and another is a test figure.
Test Information comprises test relevant informations such as test number, date of test, test specimen parameter, testing crew, test place; Test figure mainly is the test figure of gathering in the pilot system process of the test, mainly contains strain signal, pressure signal, cycle index, fatigue state etc.
The analysis of test figure mainly is that the judgement and the pressure state of fatigure failure when in process of the test, monitoring judged, and after the off-test to the analyzing later of data, draw the fatigue properties correlation parameter of test test specimen.
Three: pilot system is implemented
1. test preliminary work
At first, hydraulic system is prepared in debugging, comprises hydraulic power unit 1 and hydraulic impulse load maintainer.Guarantee that pipeline is common, the hydraulic fluid pressure temperature is normal, oil tank liquid level normal, the accumulator working index is normal, each solenoid valve state is normal, electric control system is normal.
Secondly, the installation of test specimen.
1) body is fixed on the support 11;
2) paste foil gauge at the test cylinder (jar) main bearing seat;
3) paste foil gauge in test with simulating on the piston rod;
4) accomplish simulation piston rod and the assembling of simulation bent axle, and in the test cylinder (jar) of packing into;
5) the main bearing base is installed on the body, Bolt Torque is identical with engine assembling moment;
6) shake handle, body is adjusted to the upright position;
7) base for supporting is installed;
8) the hydraulic booster oil cylinder is installed to body, is guaranteed that the hydraulic jack bottom surface contacts with simulation piston-top surface reliability, through bolt hydraulic jack and body are fixed together, Bolt Torque is identical with the engine cylinder cover mounting torque;
9) in-cylinder pressure sensor is installed;
10) connect rail module and hydraulic jack high-pressure oil pipe altogether;
11) acquisition module in test specimen strain acquirement and the pressure acquisition connecting line Access Control cabinet guarantees that line is correct.
At last, accomplish upper computer software and install, the The whole control system self check is normal.
2. process of the test
After set-up procedure finishes, process will make an experiment.
At first, test parameters is provided with, comprises test relevant informations such as test number, date of test, testing crew, test place, test unit, safety coefficient, performance coeffcient, hydraulic amplifier load enlargement factor; Also comprise the test engine relevant information, as: model, cylinder diameter, fuel system, stroke, nominal power and rated engine speed, ratio of compression, number of cylinders, valve number, torque capacity etc.
Secondly, after setting finished, system carried out self check, judged whether normal.
At last, the pilot system each several part is started working, and carries out the engine body torture test.In the process of the test, the host computer observation interface shows the each several part monitoring information, test carry out continuously up to system break down, organism fatigue destroys and judges successfully, specifies perhaps artificial shutdown system of testing cycle end.Test figure is preserved and is accomplished test.
What more than announce only is specific embodiment of the present invention.All distortion that those of ordinary skill in the art can directly derive or associate from content disclosed by the invention all should be thought protection scope of the present invention.

Claims (9)

1. an engine body hydraulic fatigue test system comprises hydraulic power unit, it is characterized in that, also comprises hydraulic impulse load maintainer, signal measurement and monitoring system, control system; Wherein,
The hydraulic impulse load maintainer comprises that the hydraulic pressure that connects successively is total to rail module, hydraulic servo solenoid valve, hydraulic amplifier and hydraulic jack, and hydraulic jack links to each other with engine body to be measured;
Signal measurement comprises foil gauge, strainmeter, the strain acquirement module that is electrically connected successively with monitoring system, and the pressure transducer and the AD module that are electrically connected, and strain acquirement module and AD module all are connected to host computer through slave computer;
Control system comprises aforementioned slave computer and host computer, and wherein slave computer is the CRIO controller, and host computer is the PC of built-in data storage analytic system; Slave computer is connected to hydraulic pressure rail module, hydraulic amplifier and hydraulic servo solenoid valve altogether respectively through signal wire.
2. engine body hydraulic fatigue test system according to claim 1 is characterized in that, also comprises high pressure accumulator and low pressure accumulator; Said hydraulic servo solenoid valve is a three-position four-way valve, and under the different keying state of valve, valve internal passage and the hydraulic pressure inner passage of rail module are altogether formed high-pressure oil passage and low pressure oil circuit respectively; Said high pressure accumulator is communicated with high-pressure oil passage, and low pressure accumulator is communicated with the low pressure oil circuit.
3. engine body hydraulic fatigue test system according to claim 1 is characterized in that, also comprises a mechanical stage body; This machinery stage body comprises support, handle, jig arm, guide rail, reductor, gear train and caster.
4. engine body hydraulic fatigue test system according to claim 1; It is characterized in that; Also have safety and warning system, comprise be used for detecting that hydraulic fluid leak, line clogging, oil tank liquid level, fuel tank temperature, on-load pressure are undesired, test test specimen fatigure failure or test at least one of overtime alarm detecting unit; Alarm detecting unit is connected to host computer through slave computer, and slave computer also is connected to total control switch through signal wire simultaneously.
5. engine body hydraulic fatigue test system according to claim 1; It is characterized in that; When said pilot system makes an experiment to engine body to be measured; Simulation piston rod, simulation bent axle and main bearing base are housed on engine body to be measured, and all bolted Bolt Torque are all identical with real engine assembling moment.
6. engine body hydraulic fatigue test system according to claim 1; It is characterized in that; When said pilot system made an experiment to engine body to be measured, hydraulic jack was positioned on the engine body to be measured and is fixed together, and Bolt Torque is identical with real engine cylinder cap assembling moment.
7. engine body hydraulic fatigue test system according to claim 1; It is characterized in that; When said pilot system makes an experiment to engine body to be measured; On the simulation piston rod with on the test cylinder (jar) main bearing seat foil gauge is being installed, this foil gauge is electrically connected strainmeter and strain acquirement module successively, and is connected to host computer through slave computer.
8. engine body hydraulic fatigue test system according to claim 1 is characterized in that, is built-in with a data storage and analytic system in the said host computer.
9. engine body hydraulic fatigue test system according to claim 1 is characterized in that, the hydraulic pressure that the common rail module of said hydraulic pressure is six passages is the rail module altogether, has six road hydraulic servo solenoid valves and is attached thereto.
CN2010105902846A 2010-12-07 2010-12-07 Engine body hydraulic fatigue test system Expired - Fee Related CN102053039B (en)

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Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102393340A (en) * 2011-09-01 2012-03-28 浙江大学 Hydraulic fatigue test system of connecting rod
CN103939421B (en) * 2014-03-10 2016-05-18 北京工业大学 A kind of method for testing fatigue for hydraulic cylinder and device
CN105004528B (en) * 2015-05-06 2017-12-19 潍柴动力股份有限公司 A kind of IC engine airframe fatigue simulation loading device
CN107856890A (en) * 2017-09-29 2018-03-30 长光卫星技术有限公司 A kind of de- slotting monitoring device of portable satellite based on cRIO frameworks
CN109211498B (en) * 2018-09-18 2020-12-01 中国标准化研究院 Intensity detection device and method
CN111735633A (en) * 2020-06-10 2020-10-02 中国航发北京航科发动机控制系统科技有限公司 Pressure load loading and strain online test system for fuel oil electric control regulator

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6453750B1 (en) * 1998-12-23 2002-09-24 Anthony Maddison Stress testing apparatus
CN201575956U (en) * 2009-09-25 2010-09-08 中国第一汽车集团公司 Fatigue testing machine of engine cylinder body
CN201876393U (en) * 2010-12-07 2011-06-22 浙江大学 Hydraulic fatigue test system for engine body

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6453750B1 (en) * 1998-12-23 2002-09-24 Anthony Maddison Stress testing apparatus
CN201575956U (en) * 2009-09-25 2010-09-08 中国第一汽车集团公司 Fatigue testing machine of engine cylinder body
CN201876393U (en) * 2010-12-07 2011-06-22 浙江大学 Hydraulic fatigue test system for engine body

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
刘耀东等.发动机活塞液压脉冲机械疲劳试验方法研究.《内燃机》.2009,(第4期), *

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