CN106595893B - Piston dynamic temperature measurement experimental rig - Google Patents
Piston dynamic temperature measurement experimental rig Download PDFInfo
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- CN106595893B CN106595893B CN201611180108.9A CN201611180108A CN106595893B CN 106595893 B CN106595893 B CN 106595893B CN 201611180108 A CN201611180108 A CN 201611180108A CN 106595893 B CN106595893 B CN 106595893B
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- piston
- signal wire
- sliding block
- connecting rod
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
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- General Physics & Mathematics (AREA)
- Testing Of Engines (AREA)
Abstract
The present invention relates to engine thermometry fields, disclose a kind of piston dynamic temperature measurement experimental rig, piston dynamic temperature measurement experimental rig, for detecting the temperature of engine cylinder inner piston, wherein, engine includes piston, piston rod and crankshaft, and one end of piston rod is connect with crankshaft, and the other end is connect with piston；It is characterized in that, including probe, signal wire and slider-crank mechanism, probe is set on the piston of cylinder, which includes sliding block, sliding rail and connecting rod, and one end of connecting rod and sliding block are hinged, the other end of connecting rod and the crankshaft of cylinder are hinged, sliding block sliding is set in sliding rail, and one end of the signal wire and the probe connect, and the other end of the signal wire with data acquisition device for connecting, wherein, the wiring trend of the signal wire is arranged along piston, piston rod, connecting rod and sliding block.It is disconnected that piston dynamic temperature measurement experimental rig provided by the invention can effectively avoid signal wire from stirring, and realizes the temperature data in acquisition piston dynamic operation in real time.
Description
Technical field
The present invention relates to engine thermometry fields, more particularly to a kind of piston dynamic temperature measurement experimental rig.
Background technique
Engine piston working environment is severe, bears the effect of high temperature and high pressure gas for a long time, if temperature is excessively high, is easy
Cause the failures such as the molten top of piston, perforation, engine caused to can not work normally, the reliability of piston for engine work extremely
It closes important.
To the thermometric of piston temperature, there are mainly three types of modes currently on the market: the first is to use hardness plug temp measuring method,
This method can not monitor piston temperature in real time, can only reflect the maximum temperature during pistons work, and thermometric essence
Degree not can guarantee；Second is wireless telemetering method, and the method thermometric is harsh to engine interior space requirement, sample frequency
It is low, and battery can not power for a long time, be unfavorable for monitoring piston temperature for a long time；The third is wired piston dynamic temperature measurement side
Method, the real time monitoring of piston temperature data may be implemented in this method, and can carry out reproduction analysis, and there is no data outages etc. to ask
Topic, however the biggest problem of wired piston dynamic temperature measurement method is the signal wire arrangement of sensor at present.Due to piston rod
Equal components do high-speed motion in engine interior, more demanding to signal wire arrangement, and the careless slightly signal wire that will lead to stirs
The problems such as disconnected.
Summary of the invention
(1) technical problems to be solved
It is an object of the present invention to provide a kind of structures simply, signal wire can effectively be avoided to stir disconnected piston dynamic surveys
Warm experimental rig.
(2) technical solution
In order to solve the above technical problem, the present invention provides a kind of piston dynamic temperature measurement experimental rigs, start for detecting
The temperature of machine cylinder inner piston, wherein engine includes piston, piston rod and crankshaft, and one end of the piston rod and crankshaft connect
It connects, the other end is connect with piston；Wherein, including probe, signal wire and slider-crank mechanism, the probe are set to the cylinder
On piston, which includes sliding block, sliding rail and connecting rod, and one end of the connecting rod and the sliding block are hinged, the company
The other end of bar and the crankshaft of the cylinder are hinged, and sliding block sliding is set in sliding rail, one end of the signal wire with it is described
Probe connection, the other end of the signal wire with data acquisition device for connecting, wherein edge is moved towards in the wiring of the signal wire
Piston, piston rod, connecting rod and sliding block arrangement.
Wherein, the other end of the connecting rod and the crank of the crankshaft are hinged.
Wherein, the sliding rail is set on the crankcase of the engine.
Wherein, the sliding rail is arranged on the bottom surface of the lower crankcase of the crankcase, and the sliding block is in the fortune of sliding rail
Dynamic direction and the direction of motion of the piston are located in a straight line.
Wherein, it is provided with hole on the wall surface of the lower crankcase, bottom surface of the signal wire along the lower crankcase, lower crankshaft
The wall surface of case simultaneously passes through hole extraction.
Wherein, signal wire is by being pasted and fixed on the bottom surface and wall surface of lower crankcase.
Wherein, the outside of signal wire is provided with polyfluortetraethylene pipe.
Wherein, signal wire is sequentially fixed at piston rod, connecting rod, on sliding block by pasting
Wherein, the probe is thermocouple.
It wherein, further include the data acquisition device being connect positioned at external engine with signal wire.
(3) beneficial effect
Piston dynamic temperature measurement experimental rig provided by the invention connects by the crank link mechanism in engine and with crank
The arrangement of the enterprising row signal line of slider-crank mechanism of the crankshaft connection of linkage, carries out the piston of dynamic operation to realize
Thermometric.The apparatus structure is simple, can effectively avoid signal wire from stirring disconnected, realizes the temperature number in acquisition piston dynamic operation in real time
According to.In addition, the device is easy to use, easy to operate, sample frequency is high, and temperature measurement accuracy is high and without changing to engine.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the not set signal wire of piston dynamic temperature measurement experimental rig according to the present invention；With
And
Fig. 2 is provided with the structural schematic diagram of signal wire for the piston dynamic temperature measurement experimental rig in Fig. 1.
In figure, 1: piston；2: cylinder sleeve；3: lower crankcase；4: sliding rail；5: signal wire；6: sliding block；7: connecting rod；8: piston rod.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Following instance
For illustrating the present invention, but it is not intended to limit the scope of the invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
Figures 1 and 2 show that a kind of structural schematic diagram of piston dynamic temperature measurement experimental rig according to the present invention.Such as Fig. 1
With shown in Fig. 2, engine includes piston 2, piston rod 8 and crankshaft, and one end of piston rod 8 is connect with crankshaft, the other end and piston 2
Connection；The piston dynamic temperature measurement experimental rig includes probe (such as thermocouple), the temperature biography for the piston 1 measured that will pop one's head in
The defeated signal wire and slider-crank mechanism that data analysis is carried out to temperature measuring equipment, probe are set on the piston 2 of cylinder, specifically,
Positioned at the top of combustion chamber inner piston 2, which includes sliding block 6, sliding rail 4 and connecting rod 7, one end of the connecting rod 7 with
Sliding block 6 is hinged, and the other end of connecting rod 7 and the crankshaft of cylinder are hinged, in this embodiment, the other end of connecting rod 7 and the song of cylinder
Crank on axis is hinged.The sliding of sliding block 6 is set in sliding rail 4, and one end of signal wire 5 and probe connect, and the other end of signal wire 5 is used
It is connect in data acquisition device, wherein the wiring trend of signal wire is arranged along piston 2, piston rod 8, connecting rod 7 and sliding block 6.
Wherein, data acquisition device can be set to outside automobile engine or be set on sliding block 6.
Piston dynamic temperature measurement experimental rig provided by the invention connects by the crank link mechanism in engine and with crank
The arrangement of the enterprising row signal line of slider-crank mechanism of the crankshaft connection of linkage, and be drawn out on temperature measuring equipment, to realize
Thermometric is carried out to the piston 1 of dynamic operation.The apparatus structure is simple, can effectively avoid signal wire from stirring disconnected, realizes acquisition in real time
Temperature data in 1 dynamic operation of piston.
Specifically, the bottom surface of the lower crankcase 3 of crankcase is arranged in the sliding rail 4 being oriented to for the sliding block 6 of slider-crank mechanism
On, and sliding block 6 is located in a straight line in the direction of motion of sliding rail 4 and the direction of motion of piston 1.In this way in lower crankcase 3
Machine oil can be lubricated sliding rail 4.Signal wire 5 interrupts in order to prevent, the signal wire 5 between sliding block 6 and lower crankcase 3
Length is more than or equal to the length of 6 stroke of sliding block.
In this embodiment, though it is shown that being provided with sliding rail 4 on 3 on the bottom surface of lower crankcase, the crank block machine
The sliding block 6 of structure slides in sliding rail 4, and sliding block 6 is located at straight line in the direction of motion of sliding rail 4 and the direction of motion of piston 1
On.However, it will be understood by those of skill in the art that the direction of sliding rail 4 can also be straight not at one with the direction of motion of piston 1
On line, i.e., sliding rail 4 also can be set on the wall surface of lower crankcase 3 or on the wall surface of the upper crankcase of crankcase or other
Position only need to guarantee that sliding block 6 can slide in sliding rail 4, and not influence movement of the piston 1 in cylinder sleeve 2.
Preferably, signal wire 5 is whole is protected using high tenacity, high-temperature resistant polytetrafluoroethylmelt (PTFE) hose, to prevent
There is integrity problem in stop signal line.
In this embodiment, hole is provided on the side of piston 1, signal wire 5 passes through the hole arrangement on 1 side of piston.
Signal wire 5 is respectively by being pasted and fixed on piston rod 8, connecting rod 7, on sliding block 6.In addition, signal wire 5 is by being pasted and fixed on lower song
On the bottom surface and wall surface of axle box 3.It is provided with hole on the wall surface of lower crankcase 3, bottom surface of the signal wire 5 along lower crankcase 3, lower song
The wall surface of axle box 3 simultaneously passes through hole extraction.
Further, which further includes the data connecting positioned at external engine with signal wire
Acquisition device.
When installation, is punched first in piston 1, carry out corresponding point layout, by Probe arrangement in corresponding measuring point
Position, then by with the signal wire 5 of probe connection be pasted onto after thermal insulation protection piston 1, piston rod 8, connecting rod 7, on sliding block 6,
The reserved length more than or equal to 6 stroke of sliding block of the signal wire 5 of 6 lower part of sliding block, continues subsequent signal wire 5 being pasted onto lower crankshaft
On 3 bottom surface of case, wall surface, and then by way of in the punching of 3 wall surface of lower crankcase, the extraction of signal wire 5 is connected to temperature measuring equipment,
To carry out corresponding piston dynamic temperature measurement test.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (4)
1. a kind of piston dynamic temperature measurement experimental rig, for detecting the temperature of engine cylinder inner piston, wherein engine includes
One end of piston, piston rod and crankshaft, the piston rod is connect with crankshaft, and the other end is connect with piston；It is characterised in that it includes
Probe, signal wire and slider-crank mechanism, the probe are set on the piston of the cylinder, which includes sliding
Block, sliding rail and connecting rod, one end of the connecting rod and the sliding block are hinged, and the crankshaft of the other end of the connecting rod and the cylinder is cut with scissors
It connects, the sliding block sliding is set in sliding rail, and one end of the signal wire and the probe connect, and the other end of the signal wire is used
It is connect in data acquisition device, wherein the wiring trend of the signal wire is arranged along piston, piston rod, connecting rod and sliding block；
The sliding rail is set on the crankcase of the engine；
The sliding rail is arranged on the bottom surface of the lower crankcase of the crankcase, and the direction of motion and institute of the sliding block in sliding rail
The direction of motion for stating piston is located in a straight line；
Hole is provided on the wall surface of the lower crankcase, signal wire is along the bottom surface of the lower crankcase, the wall surface of lower crankcase
And it passes through the hole and draws；
Signal wire is by being pasted and fixed on the bottom surface and wall surface of lower crankcase；
Signal wire is sequentially fixed at piston rod, connecting rod, on sliding block by pasting；
It further include the data acquisition device being connect positioned at external engine with signal wire.
2. thermometric experimental rig as described in claim 1, which is characterized in that the song of the other end of the connecting rod and the crankshaft
Handle is hinged.
3. thermometric experimental rig as described in claim 1, which is characterized in that the outside of signal wire is provided with polytetrafluoroethylene (PTFE)
Pipe.
4. thermometric experimental rig as claimed in any one of claims 1-3, which is characterized in that the probe is thermocouple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611180108.9A CN106595893B (en) | 2016-12-19 | 2016-12-19 | Piston dynamic temperature measurement experimental rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611180108.9A CN106595893B (en) | 2016-12-19 | 2016-12-19 | Piston dynamic temperature measurement experimental rig |
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| Publication Number | Publication Date |
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| CN106595893A CN106595893A (en) | 2017-04-26 |
| CN106595893B true CN106595893B (en) | 2019-07-05 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107525599B (en) * | 2017-07-31 | 2020-01-03 | 潍柴动力股份有限公司 | Measuring device and method for measuring dynamic temperature of engine piston |
| CN108375427B (en) * | 2018-01-23 | 2019-07-12 | 武汉理工大学 | Engine piston temperature field telemetry system Calibrating experimental bench |
| CN112146884B (en) * | 2020-09-23 | 2022-08-05 | 潍柴动力股份有限公司 | Piston temperature measuring mechanism |
| CN114279711B (en) * | 2021-12-23 | 2024-03-29 | 中国船舶集团有限公司第七一一研究所 | Piston heat transfer test device |
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| US5106202A (en) * | 1990-12-18 | 1992-04-21 | Board Of Control Of Michigan Technological University | Apparatus for measuring the temperature of a piston in an internal combustion engine |
| KR100345112B1 (en) * | 1999-12-30 | 2002-07-24 | 현대자동차주식회사 | Device for measuring an engine temperature distribution of vehicle |
| CN102853930A (en) * | 2012-08-24 | 2013-01-02 | 大连交通大学 | Transient temperature measuring system for diesel engine piston and measuring method thereof |
| CN203532049U (en) * | 2013-10-10 | 2014-04-09 | 弥勒浩翔科技有限公司 | Mini-type aero-engine |
| CN105352617A (en) * | 2015-12-09 | 2016-02-24 | 山东大学 | Lead type thermocouple piston surface temperature measurement connecting rod lead structure |
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|---|---|---|---|---|
| US5106202A (en) * | 1990-12-18 | 1992-04-21 | Board Of Control Of Michigan Technological University | Apparatus for measuring the temperature of a piston in an internal combustion engine |
| KR100345112B1 (en) * | 1999-12-30 | 2002-07-24 | 현대자동차주식회사 | Device for measuring an engine temperature distribution of vehicle |
| CN102853930A (en) * | 2012-08-24 | 2013-01-02 | 大连交通大学 | Transient temperature measuring system for diesel engine piston and measuring method thereof |
| CN203532049U (en) * | 2013-10-10 | 2014-04-09 | 弥勒浩翔科技有限公司 | Mini-type aero-engine |
| CN105352617A (en) * | 2015-12-09 | 2016-02-24 | 山东大学 | Lead type thermocouple piston surface temperature measurement connecting rod lead structure |
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| 发动机活塞温度测量方法综述;张志勇等;《柴油机设计与制造》;20051231;第14卷(第1期);第21-23页 |
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