CN103994881A - Piston oscillation oil chamber test simulation apparatus - Google Patents
Piston oscillation oil chamber test simulation apparatus Download PDFInfo
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- CN103994881A CN103994881A CN201410157516.7A CN201410157516A CN103994881A CN 103994881 A CN103994881 A CN 103994881A CN 201410157516 A CN201410157516 A CN 201410157516A CN 103994881 A CN103994881 A CN 103994881A
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- piston
- combustion gas
- temperature sensor
- oil chamber
- bent axle
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Abstract
The invention relates to a piston oscillation oil chamber test simulation apparatus. A combustion gas connection disc (3) is connected with a cylinder sleeve (9) through a fastener (17), a piston (7) is connected with a connection rod (10) through a piston pin (8) and is arranged in the cylinder sleeve (9), a high-temperature combustion gas generator (1) and a combustion gas inlet temperature sensor (2) are respectively arranged at the air inlet of the combustion gas connection disc (3), an air flowmeter (5) and a combustion gas outlet temperature sensor (4) are respectively arranged at the outlet of the combustion gas connection disc (3), the connection rod (10) is connected with a crankshaft (13) fixed on a crankshaft bearer (12), a variable frequency motor (11) is connected with the crankshaft (13), and a piston cooling nozzle (14) is fixed on the cylinder sleeve (9). The apparatus provided by the invention can verify the reasonable match between a piston oscillation oil chamber and a fuel injection quantity, enables the oscillation oil chamber to be provided with an optimum heat exchange effect and provides a basis for the design of the piston oscillation oil chamber.
Description
Technical field
The invention belongs to engine piston design field, be specifically related to a kind of piston vibrating oil pocket experiment simulator.
Background technology
Piston is the key components and parts of engine, bears high-temperature fuel gas effect (combustion gas peak temperature approaches 1800 ℃ of left and right) in engine operation process, bears high heat load.Follow the research and development of high power density, high compact diesel engine, the thermal force environment of piston is more severe, and the Problem of Failure of being brought out by piston high heat load is more outstanding.And one of control piston high heat load effective way is exactly to adopt vibration oil pocket cooling.Cooling effect and the cooling jet distributive value of vibration oil pocket, the oil recess structure that vibrates are closely related.For different piston structures, adopt the piston vibrating oil pocket of traditional experimental formula method design, its technical bottleneck is that difficulty finds vibration oil pocket to mate with the effective of distributive value, and the difficulty oil pocket that makes to vibrate produces efficient heat transfer effect, can not reduce to greatest extent piston heat load.The present invention is directed to the technical barrier of existing piston vibrating oil pocket design, designed the test unit of evaluating piston vibrating oil recess structure and nozzle flow relation, adopt motor driving crank linkage assembly simulation reciprocating motion of the pistons, adopt temperature inductor to measure the temperature of piston under different spray nozzles flow, the rationality that checking piston vibrating oil pocket mates with distributive value, the oil pocket that makes to vibrate has best heat transfer effect, for the design of piston vibrating oil pocket provides foundation.
Summary of the invention
The object of the invention is to difficulty and find vibration oil pocket to mate with the effective of distributive value, the difficulty oil pocket that makes to vibrate produces efficient heat transfer effect, can not reduce to greatest extent the problem of piston heat load, and a kind of piston vibrating oil pocket experiment simulator is provided.This device.
The technical solution used in the present invention: a kind of piston vibrating oil pocket experiment simulator, it comprises hot-gas generator 1, fuel gas inlet temperature sensor 2, combustion gas terminal pad 3, gas outlet temperature sensor 4, air flowmeter 5, seal 6, piston 7, piston pin 8, cylinder jacket 9, connecting rod 10, variable-frequency motor 11, bent axle bearing 12, bent axle 13, piston cooling nozzle 14, oil flow controller 15, temperature inductor 16 and securing member 17, combustion gas terminal pad 3 is connected by securing member 17 with cylinder jacket 9, piston 7 is connected by piston pin 8 with connecting rod 10, and be arranged in cylinder jacket 9, hot-gas generator 1 and fuel gas inlet temperature sensor 2 are separately positioned on the air intake opening place of combustion gas terminal pad 3, air flowmeter 5 and gas outlet temperature sensor 4 are separately positioned on the exit of combustion gas terminal pad 3, connecting rod 10 is connected with the bent axle 13 being fixed on bent axle bearing 12, variable-frequency motor 11 is connected with bent axle 13, piston cooling nozzle 14 is fixed in cylinder jacket 9, oil flow controller 15 is fixed on piston cooling nozzle 14, temperature inductor 16 is arranged on piston 7.
The present invention compared with prior art its beneficial effect is: the piston vibrating oil pocket test unit of the present invention design can be optimization piston vibrate oil recess structure and piston cooling nozzle distributive value, reduce piston heat load, improve piston reliability, shorten the piston research and development design cycle, reduce plunger designs cost.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
As shown in Figure 1, a kind of piston vibrating oil pocket experiment simulator, it comprises hot-gas generator 1, fuel gas inlet temperature sensor 2, combustion gas terminal pad 3, gas outlet temperature sensor 4, air flowmeter 5, seal 6, piston 7, piston pin 8, cylinder jacket 9, connecting rod 10, variable-frequency motor 11, bent axle bearing 12, bent axle 13, piston cooling nozzle 14, oil flow controller 15, temperature inductor 16 and securing member 17, combustion gas terminal pad 3 is connected by securing member 17 with cylinder jacket 9, piston 7 is connected by piston pin 8 with connecting rod 10, and be arranged in cylinder jacket 9, hot-gas generator 1 and fuel gas inlet temperature sensor 2 are separately positioned on the air intake opening place of combustion gas terminal pad 3, air flowmeter 5 and gas outlet temperature sensor 4 are separately positioned on the exit of combustion gas terminal pad 3, connecting rod 10 is connected with the bent axle 13 being fixed on bent axle bearing 12, variable-frequency motor 11 is connected with bent axle 13, piston cooling nozzle 14 is fixed in cylinder jacket 9, oil flow controller 15 is fixed on piston cooling nozzle 14, temperature inductor 16 is arranged on piston 7.
In the present invention, use bent axle 13 rotatablely moving of variable-frequency motor 11 to be converted into the to-and-fro movement of piston 7, adjust electric machine frequency and make motor speed identical with engine speed, now piston 7 characteristics of motion are consistent with engine, simulation piston vibrating oil pocket flow state; Adopt remote sensing measuring technology, by temperature inductor induction piston test point temperature, and record temperature data, by recording temperature, by the sender unit on temperature inductor, transfer out simultaneously, by signal induction device, accept data, real-time monitored piston test point temperature; Use high-temperature fuel gas simulated engine fired state, piston crown surface is heated, piston cooling nozzle sprays cold oil by the oil-in vibration oil pocket on vibration oil pocket, realizes heat exchange with piston vibrating oil pocket surface, reduces piston temperature.
Principle of work, starts hot-gas generator 1, air heated, and according to different tests requirement, setting air temperature; High temperature air enters combustion gas terminal pad 3, cylinder jacket 9 and piston component 7 composition enclosure spaces by the air intake opening on combustion gas terminal pad 3 piston is heated, and combustion gas is discharged by the outlet of combustion gas terminal pad 3; Meanwhile, open piston cooling nozzle 14, piston is carried out cooling, cold oil flow is regulated by oily flow controller 15; After the temperature constant of fuel gas inlet temperature sensor 2 and gas outlet temperature sensor 4, open variable-frequency motor 11, and be testing requirements value by adjustment of rotational speed; While open temp inductor 16, recording and analyses temperature, and record air mass flow by air flowmeter 5, when temperature inductor 16 temperature value that records fluctuates at ± 2 ℃, close hot-gas generator 1 and complete test with variable-frequency motor 11.
Claims (1)
1. key in herein 1 one kinds of piston vibrating oil pocket experiment simulators of claim, it comprises hot-gas generator (1), fuel gas inlet temperature sensor (2), combustion gas terminal pad (3), gas outlet temperature sensor (4), air flowmeter (5), seal (6), piston (7), piston pin (8), cylinder jacket (9), connecting rod (10), variable-frequency motor (11), bent axle bearing (12), bent axle (13), piston cooling nozzle (14), oil flow controller (15), temperature inductor (16) and securing member (17), it is characterized in that: combustion gas terminal pad (3) is connected by securing member (17) with cylinder jacket (9), piston (7) is connected by piston pin (8) with connecting rod (10), and be arranged in cylinder jacket (9), hot-gas generator (1) and fuel gas inlet temperature sensor (2) are separately positioned on the air intake opening place of combustion gas terminal pad (3), air flowmeter (5) and gas outlet temperature sensor (4) are separately positioned on the exit of combustion gas terminal pad (3), connecting rod (10) is connected with the bent axle (13) being fixed on bent axle bearing (12), variable-frequency motor (11) is connected with bent axle (13), piston cooling nozzle (14) is fixed in cylinder jacket (9), oil flow controller (15) is fixed on piston cooling nozzle (14), temperature inductor (16) is arranged on piston (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410157516.7A CN103994881A (en) | 2014-04-18 | 2014-04-18 | Piston oscillation oil chamber test simulation apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410157516.7A CN103994881A (en) | 2014-04-18 | 2014-04-18 | Piston oscillation oil chamber test simulation apparatus |
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| Publication Number | Publication Date |
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| CN103994881A true CN103994881A (en) | 2014-08-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201410157516.7A Pending CN103994881A (en) | 2014-04-18 | 2014-04-18 | Piston oscillation oil chamber test simulation apparatus |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2536760A (en) * | 2015-12-04 | 2016-09-28 | Ford Global Tech Llc | A hot gas pulse generator and a turbocharger testing apparatus including same |
| CN108051219A (en) * | 2017-10-27 | 2018-05-18 | 昆明理工大学 | A kind of reciprocating motion simulation mechanism of variable throw of crankshaft |
| CN110579355A (en) * | 2019-08-16 | 2019-12-17 | 华中科技大学 | device and method for testing vibration performance of cooling oil in piston of internal combustion engine |
| CN110686860A (en) * | 2019-09-20 | 2020-01-14 | 天津大学 | Experimental device capable of simulating constant-amplitude variable-frequency oscillation pipe flow |
| CN112798240A (en) * | 2020-12-22 | 2021-05-14 | 中国北方发动机研究所(天津) | Piston cooling nozzle test device for simulating real working conditions |
| CN113029579A (en) * | 2021-02-04 | 2021-06-25 | 昆明理工大学 | Magnetic drive suspension oscillation heat transfer simulation test device |
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| US4834550A (en) * | 1986-08-06 | 1989-05-30 | Hitachi Metals, Ltd. | Apparatus for testing heat-insulating tubular member |
| KR20060031214A (en) * | 2004-10-08 | 2006-04-12 | 현대자동차주식회사 | Testing divice for a piston ring |
| JP2009175024A (en) * | 2008-01-25 | 2009-08-06 | Toyota Motor Corp | Combustion chamber measuring device for internal-combustion engine |
| CN102032991A (en) * | 2010-11-16 | 2011-04-27 | 北京理工大学 | Engine piston oscillating and cooling test device |
| CN103543015A (en) * | 2013-09-22 | 2014-01-29 | 华中科技大学 | Cooling experiment measuring device for oil injection of piston of internal combustion engine |
| CN103604592A (en) * | 2013-11-18 | 2014-02-26 | 北京理工大学 | Engine piston heat-mechanical load coupling fatigue test system |
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2014
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Patent Citations (6)
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| US4834550A (en) * | 1986-08-06 | 1989-05-30 | Hitachi Metals, Ltd. | Apparatus for testing heat-insulating tubular member |
| KR20060031214A (en) * | 2004-10-08 | 2006-04-12 | 현대자동차주식회사 | Testing divice for a piston ring |
| JP2009175024A (en) * | 2008-01-25 | 2009-08-06 | Toyota Motor Corp | Combustion chamber measuring device for internal-combustion engine |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2536760A (en) * | 2015-12-04 | 2016-09-28 | Ford Global Tech Llc | A hot gas pulse generator and a turbocharger testing apparatus including same |
| GB2536760B (en) * | 2015-12-04 | 2020-04-15 | Ford Global Tech Llc | A hot gas pulse generator and a turbocharger testing apparatus including same |
| CN108051219A (en) * | 2017-10-27 | 2018-05-18 | 昆明理工大学 | A kind of reciprocating motion simulation mechanism of variable throw of crankshaft |
| CN108051219B (en) * | 2017-10-27 | 2020-07-31 | 昆明理工大学 | Reciprocating motion simulation mechanism of internal combustion engine with variable crank radius |
| CN110579355A (en) * | 2019-08-16 | 2019-12-17 | 华中科技大学 | device and method for testing vibration performance of cooling oil in piston of internal combustion engine |
| CN110686860A (en) * | 2019-09-20 | 2020-01-14 | 天津大学 | Experimental device capable of simulating constant-amplitude variable-frequency oscillation pipe flow |
| CN110686860B (en) * | 2019-09-20 | 2021-08-06 | 天津大学 | Experimental device capable of simulating constant-amplitude variable-frequency oscillation pipe flow |
| CN112798240A (en) * | 2020-12-22 | 2021-05-14 | 中国北方发动机研究所(天津) | Piston cooling nozzle test device for simulating real working conditions |
| CN112798240B (en) * | 2020-12-22 | 2022-06-21 | 中国北方发动机研究所(天津) | Piston cooling nozzle test device for simulating real working conditions |
| CN113029579A (en) * | 2021-02-04 | 2021-06-25 | 昆明理工大学 | Magnetic drive suspension oscillation heat transfer simulation test device |
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Application publication date: 20140820 |