CN106017712B - piston transient temperature detecting system and engine - Google Patents
piston transient temperature detecting system and engine Download PDFInfo
- Publication number
- CN106017712B CN106017712B CN201610596764.0A CN201610596764A CN106017712B CN 106017712 B CN106017712 B CN 106017712B CN 201610596764 A CN201610596764 A CN 201610596764A CN 106017712 B CN106017712 B CN 106017712B
- Authority
- CN
- China
- Prior art keywords
- piston
- transient temperature
- signal
- temperature detection
- hall sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/08—Safety, indicating or supervising devices
-
- 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
- G01K7/10—Arrangements for compensating for auxiliary variables, e.g. length of lead
- G01K7/12—Arrangements with respect to the cold junction, e.g. preventing influence of temperature of surrounding air
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C16/00—Erasable programmable read-only memories
- G11C16/02—Erasable programmable read-only memories electrically programmable
- G11C16/06—Auxiliary circuits, e.g. for writing into memory
Abstract
The invention discloses a kind of piston transient temperature detecting systems comprising permanent magnet, piston transient temperature detection components and Hall sensor.The permanent magnet is arranged in connecting rod towards on the side of the piston transient temperature detection components, is used to provide magnetic field for the Hall sensor.The piston transient temperature detection components are oppositely arranged with the connecting rod, and it is electrically connected with the Hall sensor；The piston transient temperature detection components include storage chip, and the storage chip is NAND Flash, and the internal storage space into the storage chip is stored while being used to acquire signal and by the collected signal.The Hall sensor is arranged in the piston transient temperature detection components, is used to provide level signal.The invention further relates to a kind of engines with the piston transient temperature detecting system.
Description
Technical field
The invention belongs to internal combustion engine related fields, more particularly, to a kind of piston transient temperature detecting system and start
Machine.
Background technology
Piston transient temperature is primarily referred to as the transient temperature on an engine operational cycle inner carrier surface.Pass through piston top
The measurement of portion's transient temperature can obtain the temperature change of piston face, and providing data for heat transfer research in engine supports, and
It can judge whether that there is a phenomenon where fuel oils to be sprayed onto piston face or piston face carbon distribution according to measurement data.Piston transient state temperature
The fluctuation of degree reflection piston temperature, is the important parameter of piston reliability evaluation.In-engine heat transfer influence engine power,
A series of performances such as economic, discharge.Therefore, it is outstanding to the analysis of engine performance and evaluative meaning to measure piston transient temperature.
Current main piston transient temperature measuring method has visualization phosphorus method and electrical measuring method, and visualization phosphorus method is to piston temperature
The influence for spending field is smaller, but can only realize the measurement of fixed area temperature, lacks flexibility, a large amount of visible lights when being burnt
Influence, measurement accuracy is low, since the damped cycle for being excited light is long, causes sample rate low.Electrical measuring method is to survey with thermocouple
Temperature sensor, high certainty of measurement, main three kinds of leaded method, wireless telemetering method and storage method signal transmission forms.But it is existing
Leads method installation trouble in electrical measuring method, signal wire are easy fatigue damage, and reliability is low, and measurement accuracy is poor；Wireless remote control
Survey method signal is easy to be disturbed, and limits measurement accuracy, and break signal phenomenon often occurs, due to needing to carry out signal conversion
With transmission, cause sample rate relatively low, and the installation of accordingly signal receiving device is cumbersome；Storage method memory capacity
Small, storage speed is slow, and need to power keep data, sample rate is low and the adjustment range is small, Rouser installation trouble, and with adopt
Collecting system coordinates difficulty big, and storage data lack effective crank phase signal, these cause sample rate slow, electric quantity consumption
Greatly, the effective time is short, and Test Cycle quantity is few, and datacycle starting substantially increases with division difficulty, system failure rate is terminated
Add.
Invention content
For the disadvantages described above or Improvement requirement of the prior art, the present invention provides a kind of piston transient temperature detecting systems
And the engine with the piston transient temperature detecting system, the work characteristics based on piston are examined for piston transient temperature
Connection relation between the particular elements and all parts of examining system is designed.The storage chip is NAND Flash,
It can improve the picking rate of piston transient temperature, and obtained measurement result can be good at reflecting that the transient temperature of piston becomes
Change situation；And the data in the storage chip can save electricity, it is ensured that data in permanent retention under power blackout situation
Safety.It is initial position and the final position that can easily determine cycle according to the distance of reaction of the Hall sensor, in turn
According to the acquisition storage time of signal, pair of each transient temperature value and the crank position of the engine may further determine that
It should be related to；And the quantity of signal that acquires according to the Hall sensor of the piston transient temperature detecting system can control and be
System sample rate, sample rate adjustment is flexible, range is wider.The piston transient temperature detecting system can be engine reliable
Property, heat transfer, the research of fuel oil wall and top land carbon deposition phenomenon provides data and supports.In addition, the Hall sensor is fixed on
In the piston transient temperature detection components, the permanent magnet is fixed on the connecting rod and opposite with the Hall sensor
Setting, it is ensured that the stabilization of the operating fields of the Hall sensor, and may make system installation simple and reliable operation.
To achieve the above object, according to one aspect of the present invention, a kind of piston transient temperature detecting system is provided,
Including permanent magnet, piston transient temperature detection components and Hall sensor, it is characterised in that：
The permanent magnet is arranged in connecting rod towards on the side of the piston transient temperature detection components, is used for as institute
It states Hall sensor and magnetic field is provided；
The piston transient temperature detection components are oppositely arranged with the connecting rod, and it electrically connects with the Hall sensor
It connects；The piston transient temperature detection components include storage chip, and the storage chip is NAND Flash, are used to acquire letter
Number while and the collected signal is stored into the register of the storage chip, after the register is filled with again
Signal data in the register is uniformly stored in the internal storage space of the storage chip；
The Hall sensor is arranged in the piston transient temperature detection components, is used to provide level signal.
Further, the piston transient temperature detecting system is sent out according to the Hall sensor in each working cycles
The quantity of the level signal sent controls sample rate.
Further, each of described storage chip storage signal seals data up for safekeeping for 16, and described 16 are sealed up for safekeeping number
Low 15 in are temperature signal, and highest 1 is level signal.
It is another aspect of this invention to provide that providing a kind of engine comprising piston, connecting rod, magnet backing plate and installation
Box, it is characterised in that：
The engine further includes piston transient temperature detecting system as described above, and the piston offers holding tank,
One end of the mounting box and the connecting rod is housed in the holding tank；The piston transient temperature detection components are fixed on institute
It states on mounting box, and it is oppositely arranged with the connecting rod；The magnet backing plate is fixed on the connecting rod towards the piston transient state
On the side of temperature sensing assembly, the magnet is fixed on the magnet backing plate.
Further, when the central shaft of the piston is parallel with the central shaft of the connecting rod, the permanent magnet with it is described
The distance between Hall sensor minimum, at this time distance between the two be less than the Hall sensor operating distance.
In general, through the invention it is contemplated above technical scheme is compared with the prior art, work using the present invention
Transient temperature detecting system and engine are filled in, the storage chip is NAND Flash, can improve piston transient temperature
Picking rate, obtained measurement result can be good at the transient temperature situation of change for reflecting piston；And in the storage chip
Data can save electricity in permanent retention under power blackout situation, it is ensured that the safety of data.According to the Hall sensor
Distance of reaction be that can easily determine initial position and the final position of cycle, and then according to the acquisition storage time of signal,
It may further determine that the correspondence of each transient temperature value and the crank position of the engine；And the piston transient state temperature
Degree detecting system can be used in control system sample rate, sample rate adjustment according to the quantity of the signal of the Hall sensor
Flexibly, range is wider.The piston transient temperature detecting system can be engine reliability, heat transfer, fuel oil is rebuffed and piston
The research of top carbon deposition phenomenon provides data and supports.In addition, the Hall sensor is fixed on the piston transient temperature detection
On component, the permanent magnet is fixed on the connecting rod and is oppositely arranged with the Hall sensor, it is ensured that the Hall
The stabilization of the operating fields of sensor, and may make system installation simple and reliable operation.
Description of the drawings
Fig. 1 is the stereoscopic schematic diagram of the partial structurtes for the engine that better embodiment of the present invention provides.
Fig. 2 is the decomposition diagram of the partial structurtes of the engine in Fig. 1.
Fig. 3 is the block diagram of the piston transient temperature detecting system of the partial structurtes of the engine in Fig. 1.
Fig. 4 is the work flow diagram of the piston transient temperature detecting system in 3.
In all the appended drawings, identical reference numeral is used for indicating identical element or structure, wherein：1- thermocouples, 2-
Cold junction temperature measurement module, 3- signal processing modules, 4-A/D converters, 5- microcontrollers, 6- power modules, 7- storage chips, 8-
Clock chip, 9- magnet backing plates, 10- permanent magnets, 11- Hall sensors, 12- piston transient temperature detection components, 13- installations
Box, 14- pistons, 15- connecting rods.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below
It does not constitute a conflict with each other and can be combined with each other.
It please refers to Fig.1 to Fig.4, the engine that better embodiment of the present invention provides comprising magnet backing plate 9, permanent magnetic
Iron 10, Hall sensor 11, piston transient temperature detection components 12, mounting box 13, piston 14 and connecting rod 15, the piston 14 are opened
Equipped with holding tank, the holding tank is used to accommodate one end of the mounting box 13 and the connecting rod 15.The piston transient temperature
Detection components 12 are fixed on the mounting box 13.In present embodiment, the permanent magnet 10, the Hall sensor 11 and
The piston transient temperature detection components 12 form the piston transient temperature detecting system of the engine；The piston transient state temperature
Degree detection components 12 are just fixed on the mounting box 13 after being packaged.
One end of the connecting rod 15 is arranged in the holding tank of the piston 14, is oppositely arranged with the mounting box 13.
The magnet backing plate 9 is fixed on the connecting rod 15 towards the side of the piston transient temperature detection components 12, is used to support
The permanent magnet 10.The Hall sensor 11 be arranged in the piston transient temperature detection components 12, and its with it is described
Permanent magnet 10 is oppositely arranged.The permanent magnet 10 is used to provide magnetic field for the Hall sensor 11.
The piston transient temperature detection components 12 include thermocouple 1, cold junction temperature measurement module 2, signal processing module
3, A/D converter 4, microcontroller 5, power module 6, storage chip 7 and clock chip 8.The thermocouple 1 is for measuring piston
The sensor of transient temperature, signal wire are fixed using high-temp glue and mechanical structure.In present embodiment, the thermocouple 1 will
The temperature signal of measurement sends the signal processing module 3 to.The cold junction temperature measurement module 2 using high-precision platinum resistor and
Electric bridge is used to provide the cold junction compensation temperature signal of the thermocouple 1.Meanwhile the cooling temperature measurement module 2 is examined
The compensation temperature signal measured sends the signal processing module 3 to.
The signal processing module 3 is electrically connected the A/D converter 4, and the multi way temperature signal received is carried out
Processing, and select that wherein temperature signal is amplified and filters all the way, while the signal processing module 3 will that treated be described
Temperature signal is transmitted to the A/D converter 4.
The A/D converter 4 is used to the temperature signal of the analog signal form received being converted to digital signal
The temperature signal of form, while the transformed temperature signal is transferred to the microcontroller 5.The microcontroller 5 electrically connects
The storage chip 7 and the clock chip 8 are connect, is used to control the signal processing module 3, the A/D converter 4, institute
Storage chip 7, the clock chip 8 and the power module 6 are stated, also by the temperature signal received and from described
The level signal of Hall sensor 11 is transferred to the storage chip 7.
The power supply processing module 4 is used for as the cold junction temperature measurement module 2, the signal processing module 3, the A/
D converters 4, the microcontroller 5, the storage chip 7 and the clock chip 8 are powered.
The storage chip 7 is used for storage system time, collected temperature signal and level signal, and side is used to acquire
The mode of side storage, i.e., while the storage chip 7 receives the signal from the microcontroller 5, and described in receiving
Signal is stored into the register of the storage chip 7, again by the signal number in the register after the register is filled with
According to the unified internal storage space for being stored in the storage chip 7.
In present embodiment, the storage chip 7 be NAND Flash (flash memory), with faster storage speed and compared with
Big memory space, and the data in the storage chip 7 can permanent retention in the event of a power failure.The piston transient state
When system for detecting temperature measures data storage, the temperature signal and the level signal are packaged into 16 digits
According to wherein low 15 are temperature signal, highest 1 is level signal, and 16 data after encapsulation are stored into the storage
In chip 7.When temperature signal and level signal store, is stored using 16 data after sealing up for safekeeping, reduce storage time
Number, effectively increases storage speed, reduces storage data quantity.
When the piston transient temperature detection components 12 adjust sample rate, the Hall sensor 11 is first counted in institute
The quantity for stating the level signal sent in a working cycles of engine calculates required prolong further according to the quantity of level signal
When number, then required delay number is taken into account in each data sampling process so that piston transient temperature inspection
Examining system can work according to required sample rate.
It is described when the central shaft of the central shaft of the connecting rod 15 and the piston 14 is mutually parallel in present embodiment
Permanent magnet 10 is minimum in a working cycles of the engine at a distance from the Hall sensor 11, at this point, described
The operating distance for being smaller than the Hall sensor 11 between permanent magnet 10 and the Hall sensor 11.Only work as institute
When stating piston 14 and moving to certain position, the level signal that the microcontroller 5 receives is just low level；The piston 14 is located at
When other positions, the level signal that the microcontroller 5 receives is high level, i other words, according to the Hall sensor 11
Distance of reaction can calculate initial position and the final position of each cycle；According to the acquisition storage time of each signal,
It may further determine that the correspondence of each transient temperature value and the crank position of the engine.
Piston transient temperature detecting system using the present invention and engine, the storage chip are NAND Flash,
The picking rate that piston transient temperature can be improved, obtained measurement result can be good at the transient temperature variation for reflecting piston
Situation；And the data in the storage chip can save electricity in permanent retention under power blackout situation, it is ensured that the peace of data
Entirely.It is initial position and the final position that can easily determine cycle, Jin Ergen according to the distance of reaction of the Hall sensor
It is believed that number acquisition storage time, may further determine that each transient temperature value is corresponding with the crank position of the engine
Relationship；And the quantity of signal that the piston transient temperature detecting system is acquired according to the Hall sensor being capable of control system
Sample rate, sample rate adjustment is flexible, range is wider.The piston transient temperature detecting system can be engine reliable
Property, heat transfer, fuel oil be rebuffed and top land carbon deposition phenomenon research provide data support.In addition, the Hall sensor is fixed
In the piston transient temperature detection components, the permanent magnet be fixed on the connecting rod and with the Hall sensor phase
To setting, it is ensured that the stabilization of the operating fields of the Hall sensor, and may make system installation simple and reliable operation.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, all within the spirits and principles of the present invention made by all any modification, equivalent and improvement etc., should all include
Within protection scope of the present invention.
Claims (5)
1. a kind of piston transient temperature detecting system comprising permanent magnet, piston transient temperature detection components and hall sensing
Device, it is characterised in that：
The permanent magnet be arranged connecting rod towards on the side of the piston transient temperature detection components, be used for for it is described suddenly
You provide magnetic field by sensor；
The piston transient temperature detection components are oppositely arranged with the connecting rod, and it is electrically connected with the Hall sensor；
The piston transient temperature detection components include storage chip, and the storage chip is NAND Flash, is used to acquire signal
While and the collected signal is stored into the register of the storage chip, after the register is filled with again will
Signal data in the register is uniformly stored in the internal storage space of the storage chip；
The Hall sensor is arranged in the piston transient temperature detection components, is used to provide level signal.
2. piston transient temperature detecting system according to claim 1, it is characterised in that：The piston transient temperature detection
The quantity of the level signal that system is sent according to the Hall sensor in each working cycles controls sample rate.
3. piston transient temperature detecting system according to claim 1, it is characterised in that：The storage chip stores every
A signal is 16 and seals data up for safekeeping, and described 16 low 15 sealed up for safekeeping in data are temperature signal, and highest 1 is believed for level
Number.
4. a kind of engine comprising piston, connecting rod, magnet backing plate and mounting box, it is characterised in that：
The engine further includes piston transient temperature detecting system as described in any one of claims 1 to 3, and the piston is opened
Equipped with holding tank, one end of the mounting box and the connecting rod is housed in the holding tank；The piston transient temperature detection
Component is fixed on the mounting box, and it is oppositely arranged with the connecting rod；The magnet backing plate is fixed on the connecting rod direction
On the side of the piston transient temperature detection components, the magnet is fixed on the magnet backing plate.
5. engine according to claim 4, it is characterised in that：The central shaft of the central shaft of the piston and the connecting rod
When parallel, the distance between the permanent magnet and the Hall sensor are minimum, and distance between the two is less than described at this time
The operating distance of Hall sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610596764.0A CN106017712B (en) | 2016-07-26 | 2016-07-26 | piston transient temperature detecting system and engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610596764.0A CN106017712B (en) | 2016-07-26 | 2016-07-26 | piston transient temperature detecting system and engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106017712A CN106017712A (en) | 2016-10-12 |
| CN106017712B true CN106017712B (en) | 2018-09-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610596764.0A Expired - Fee Related CN106017712B (en) | 2016-07-26 | 2016-07-26 | piston transient temperature detecting system and engine |
Country Status (1)
| Country | Link |
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| CN (1) | CN106017712B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109612736A (en) * | 2018-11-30 | 2019-04-12 | 华中科技大学 | A kind of telemetry system and its measurement method of internal combustion engine top wall surface transient temperature |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106706148A (en) * | 2017-01-23 | 2017-05-24 | 北京理工大学 | Internal combustion engine piston top face transient temperature test system |
| CN112146884B (en) * | 2020-09-23 | 2022-08-05 | 潍柴动力股份有限公司 | Piston temperature measuring mechanism |
| CN113027608B (en) * | 2021-04-06 | 2022-03-01 | 华中科技大学 | Internal combustion engine piston top surface transient temperature remote measuring system and installation method thereof |
| CN113324668A (en) * | 2021-05-07 | 2021-08-31 | 华中科技大学 | Wireless temperature measurement controller for high-frequency acquisition of transient temperature on surface of piston of internal combustion engine |
| CN113404680B (en) * | 2021-05-13 | 2022-09-30 | 东莞市力博得电子科技有限公司 | Water pump piston motion frequency measuring method and device and storage medium |
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| CN103252706A (en) * | 2013-01-15 | 2013-08-21 | 上海大学 | Control system and method for high-precision needle valve orifice grinding |
| EP2587496B1 (en) * | 2011-10-27 | 2014-06-04 | MSG Mechatronic Systems GmbH | Bistable switching magnet with piston position detector |
| CN105004463A (en) * | 2015-04-30 | 2015-10-28 | 中国科学院长春光学精密机械与物理研究所 | Piston type propeller engine thrust measuring method and piston type propeller engine thrust measuring device |
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|---|---|---|---|---|
| CN101427106A (en) * | 2006-03-28 | 2009-05-06 | 诺格伦有限责任公司 | Displacement sensor for a rod |
| EP2587496B1 (en) * | 2011-10-27 | 2014-06-04 | MSG Mechatronic Systems GmbH | Bistable switching magnet with piston position detector |
| CN103252706A (en) * | 2013-01-15 | 2013-08-21 | 上海大学 | Control system and method for high-precision needle valve orifice grinding |
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| CN106017712A (en) | 2016-10-12 |
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