CN106017712A - Piston transient temperature detection system and engine - Google Patents

Piston transient temperature detection system and engine Download PDF

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Publication number
CN106017712A
CN106017712A CN201610596764.0A CN201610596764A CN106017712A CN 106017712 A CN106017712 A CN 106017712A CN 201610596764 A CN201610596764 A CN 201610596764A CN 106017712 A CN106017712 A CN 106017712A
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CN
China
Prior art keywords
piston
transient temperature
transient
signal
connecting rod
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CN201610596764.0A
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Chinese (zh)
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CN106017712B (en
Inventor
黄荣华
代辉
汤杰
黄润伍
黄胜
张郁
陈琳
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Huazhong University of Science and Technology
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Huazhong University of Science and Technology
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Priority to CN201610596764.0A priority Critical patent/CN106017712B/en
Publication of CN106017712A publication Critical patent/CN106017712A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K7/00Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
    • G01K7/02Measuring 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B77/00Component parts, details or accessories, not otherwise provided for
    • F02B77/08Safety, indicating, or supervising devices
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K7/00Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
    • G01K7/02Measuring 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
    • G01K7/10Arrangements for compensating for auxiliary variables, e.g. length of lead
    • G01K7/12Arrangements with respect to the cold junction, e.g. preventing influence of temperature of surrounding air
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11CSTATIC STORES
    • G11C16/00Erasable programmable read-only memories
    • G11C16/02Erasable programmable read-only memories electrically programmable
    • G11C16/06Auxiliary circuits, e.g. for writing into memory

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)
  • Testing Of Engines (AREA)

Abstract

The invention discloses a piston transient temperature detection system comprising a permanent magnet, a piston transient temperature detection component and a Hall sensor. The permanent magnet is arranged on one side, which faces the piston temperature transient detection component, of a connecting rod and used for providing a magnetic field for the Hall sensor. The piston temperature transient detection component is arranged to be opposite to the connecting rod and electrically connected with the Hall sensor. The piston temperature transient detection component comprises a storage chip which is NAND Flash and used for acquiring signals and storing the acquired signals in the internal storage space of the storage chip. The Hall sensor is arranged on the piston temperature transient detection component and used for providing level signals. The invention also relates to an engine with the piston transient temperature detection system.

Description

Piston transient temperature detecting system and electromotor
Technical field
The invention belongs to internal combustion engine association area, more particularly, to a kind of piston transient temperature detection System and electromotor.
Background technology
Piston transient temperature is primarily referred to as the transient temperature on an engine operational cycle inner carrier surface. By the measurement of top land transient temperature, the variations in temperature of piston face can be obtained, for electromotor Interior heat transfer research provides data support, it is possible to judge whether to occur fuel oil to be sprayed onto work according to measurement data Plug surface or the phenomenon of piston face carbon distribution.The fluctuation of piston transient temperature reflection piston temperature, be The important parameter of piston reliability evaluation.In-engine Heat Transfer Influence engine power, economy, row A series of performances such as put.Therefore, measure piston transient temperature and to the analysis of engine performance and evaluate meaning Justice is outstanding.
Piston transient temperature measuring method currently mainly has visualization phosphorus method and electrical measuring method, visualizes phosphorus Method is less on the impact of piston temperature field, but can only realize the measurement of fixed area temperature, lacks flexibly Property, a large amount of visible rays during by burning are affected, and certainty of measurement is low, owing to being excited the decay of light Cycle is long, causes sample rate low.Electrical measuring method is with thermocouple as temperature transducer, and certainty of measurement is high, Main leaded method, wireless telemetering method and three kinds of signal transmission forms of storage method.But existing electrical measuring method In leads method install trouble, the easy fatigue damage of holding wire, reliability is low, and measurement accuracy is poor; Wireless remote control is surveyed method signal and is easily disturbed, and limits certainty of measurement, and often occurs that break signal is existing As, owing to needs carry out signal conversion and send, cause sample rate relatively low, and signal connects accordingly The installation of receiving apparatus is cumbersome;Storage method memory span is little, and storage speed is slow, and the guarantor that need to power Holding data, sample rate is low and adjusting range is little, and Rouser installs trouble, and joins with acquisition system Conjunction difficulty is big, and storage data lack effective crank phase signal, and these cause sample rate slow, electricity Amount consumes big, and the effective time is short, and Test Cycle quantity is few, and datacycle is initial and terminates dividing Difficulty, system failure rate is significantly increased.
Summary of the invention
For disadvantages described above or the Improvement requirement of prior art, the invention provides a kind of piston transient state temperature Spend detecting system and there is the electromotor of described piston transient temperature detecting system, work based on piston Feature, for the annexation between particular elements and all parts of piston transient temperature detecting system Designed.Described storage chip is NAND Flash, and it can improve adopting of piston transient temperature Collection speed, the measurement result obtained can be good at reflecting the transient temperature situation of change of piston;And institute State the data in storage chip and can save electricity in permanent retention under powering-off state, it is ensured that number According to safety.Distance of reaction according to described Hall element is i.e. readily determined the start bit of circulation Put and final position, and then store the time according to the collection of signal, may further determine that each transient state The corresponding relation of the crank position of temperature value and described electromotor;And described piston transient temperature detection system Unite the signal gathered according to described Hall element quantity can control system sample rate, sampling speed Degree adjusts flexible, wider.Described piston transient temperature detecting system can be engine reliability, The research of heat transfer, fuel oil wall and top land carbon deposition phenomenon provides data support.Additionally, described Hall Sensor is fixed in described piston transient temperature detection components, and described permanent magnet is fixed on described company It is oppositely arranged on bar and with described Hall element, it is ensured that the operating fields of described Hall element Stable, and can make system that simple and reliable operation is installed.
For achieving the above object, according to one aspect of the present invention, it is provided that a kind of piston transient temperature Detecting system, it includes permanent magnet, piston transient temperature detection components and Hall element, and it is special Levy and be:
Described permanent magnet is arranged on connecting rod towards on the side of described piston transient temperature detection components, It is for providing magnetic field for described Hall element;
Described piston transient temperature detection components is oppositely arranged with described connecting rod, and it passes with described Hall Sensor is electrically connected with;Described piston transient temperature detection components includes storage chip, described storage chip For NAND Flash, it is stored in described while gathering signal and by the described signal collected In the depositor of storage chip, again by the signal data in described depositor after described depositor is filled with The unified internal storage space being stored in described storage chip;
Described Hall element is arranged in described piston transient temperature detection components, and it is used for providing electricity Ordinary mail number.
Further, described piston transient temperature detecting system according to described Hall element in each work The quantity of the described level signal sent in circulating is to control sample rate.
Further, each described signal of described storage chip storage is 16 and seals data up for safekeeping, described 16 low 15 sealed up for safekeeping in data are temperature signal, and the highest 1 is level signal.
It is another aspect of this invention to provide that provide a kind of electromotor, it includes piston, connecting rod, magnetic Iron chair and mounting box, it is characterised in that:
Described electromotor also includes piston transient temperature detecting system as above, and described piston is offered Holding tank, one end of described mounting box and described connecting rod is had to be housed in described holding tank;Described piston Transient temperature sensing component is fixed on described mounting box, and it is oppositely arranged with described connecting rod;Described Magnet backing plate is fixed on described connecting rod towards on the side of described piston transient temperature detection components, described Magnet is fixed on described Magnet backing plate.
Further, when the central shaft of described piston is parallel with the central shaft of described connecting rod, described forever Distance between Magnet and described Hall element is minimum, distance the most between the two less than described suddenly The operating distance of your sensor.
In general, by the contemplated above technical scheme of the present invention compared with prior art, use The piston transient temperature detecting system of the present invention and electromotor, described storage chip is NAND Flash, It can improve the picking rate of piston transient temperature, and the measurement result obtained can be good at reflection and lives The transient temperature situation of change of plug;And the data in described storage chip can be permanent under powering-off state Keep, save electricity, it is ensured that the safety of data.Distance of reaction according to described Hall element I.e. it is readily determined original position and the final position of circulation, and then when storing according to the collection of signal Between, may further determine that the corresponding relation of each transient temperature value and the crank position of described electromotor; And described piston transient temperature detecting system can be used according to the quantity of the signal of described Hall element Control system sample rate, sample rate adjusts flexible, wider.Described piston transient temperature is examined Examining system can be engine reliability, heat transfer, fuel oil be rebuffed and the research of top land carbon deposition phenomenon Offer data are supported.Additionally, described Hall element is fixed on described piston transient temperature detection components On, described permanent magnet is fixed on described connecting rod and is oppositely arranged with described Hall element, it is ensured that Stablizing of the operating fields of described Hall element, and can make system that simple and reliable operation is installed.
Accompanying drawing explanation
Fig. 1 is the schematic perspective view of the partial structurtes of the electromotor that better embodiment of the present invention provides.
Fig. 2 is the decomposing schematic representation of the partial structurtes of the electromotor in Fig. 1.
Fig. 3 is the block diagram of the piston transient temperature detecting system of the partial structurtes of the electromotor in Fig. 1.
Fig. 4 is the workflow diagram of the piston transient temperature detecting system in 3.
In all of the figs, identical reference is used for representing identical element or structure, wherein: 1-thermocouple, 2-cold junction temperature measurement module, 3-signal processing module, 4-A/D transducer, 5-monolithic Machine, 6-power module, 7-storage chip, 8-clock chip, 9-Magnet backing plate, 10-permanent magnet, 11- Hall element, 12-piston transient temperature detection components, 13-mounting box, 14-piston, 15-connecting rod.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing And embodiment, the present invention is further elaborated.Should be appreciated that described herein specifically Embodiment only in order to explain the present invention, is not intended to limit the present invention.Additionally, it is disclosed below Just may be used as long as technical characteristic involved in each embodiment of the present invention does not constitutes conflict each other To be mutually combined.
Referring to Fig. 1 to Fig. 4, the electromotor that better embodiment of the present invention provides, it includes Magnet pad Plate 9, permanent magnet 10, Hall element 11, piston transient temperature detection components 12, mounting box 13, Piston 14 and connecting rod 15, described piston 14 offers holding tank, and described holding tank is used for housing described Mounting box 13 and one end of described connecting rod 15.Described piston transient temperature detection components 12 is fixed on institute State on mounting box 13.In present embodiment, described permanent magnet 10, described Hall element 11 and Described piston transient temperature detection components 12 forms the piston transient temperature detecting system of described electromotor; Described piston transient temperature detection components 12 be packed after be just fixed on described mounting box 13.
One end of described connecting rod 15 is arranged in the holding tank of described piston 14, itself and described mounting box 13 are oppositely arranged.Described Magnet backing plate 9 is fixed on described connecting rod 15 and examines towards described piston transient temperature Surveying the side of assembly 12, it is used for supporting described permanent magnet 10.Described Hall element 11 is arranged In described piston transient temperature detection components 12, and it is oppositely arranged with described permanent magnet 10. Described permanent magnet 10 is for providing magnetic field for described Hall element 11.
Described piston transient temperature detection components 12 include thermocouple 1, cold junction temperature measurement module 2, Signal processing module 3, A/D converter 4, single-chip microcomputer 5, power module 6, storage chip 7 are timely Clock chip 8.Described thermocouple 1 is the sensor for measuring piston transient temperature, and its holding wire uses High-temp glue and frame for movement are fixed.In present embodiment, the temperature signal that described thermocouple 1 will be measured Send described signal processing module 3 to.Described cold junction temperature measurement module 2 use high-precision platinum resistor and Electric bridge, it is for providing the cold junction compensation temperature signal of described thermocouple 1.Meanwhile, described cooling temperature The compensation temperature signal that degree measurement module 2 is detected sends described signal processing module 3 to.
Described signal processing module 3 is electrically connected with described A/D converter 4, its multichannel that will receive Temperature signal processes, and selects a wherein road temperature signal to be amplified and filter, the most described Described temperature signal after signal processing module 3 will process is sent to described A/D converter 4.
The described temperature signal conversion of the described A/D converter 4 analog signal form for receiving For the temperature signal of digital signal form, the described temperature signal after conversion is transferred to described list simultaneously Sheet machine 5.Described single-chip microcomputer 5 is electrically connected with described storage chip 7 and described clock chip 8, and it is used for Control described signal processing module 3, described A/D converter 4, described storage chip 7, described clock Chip 8 and described power module 6, it also by the described temperature signal received and passes from described Hall The level signal of sensor 11 is transferred to described storage chip 7.
Described power supply processing module 4 is used for as described cold junction temperature measurement module 2, described signal processing mould Block 3, described A/D converter 4, described single-chip microcomputer 5, described storage chip 7 and described clock chip 8 are powered.
Described storage chip 7 for storing system time, the temperature signal that collects and level signal, It uses the mode that collection limit, limit stores, the most described storage chip 7 to accept from described single-chip microcomputer 5 While signal, and the described signal received is stored in the depositor of described storage chip 7, It is stored in described storage chip by unified for the signal data in described depositor again after described depositor is filled with The internal storage space of 7.
In present embodiment, described storage chip 7 is NAND Flash (flash memory), and it has comparatively fast Storage speed and bigger memory space, and described storage chip 7 in data can be in power-off In the case of permanent retention.When described piston transient temperature detecting system measures data storage, institute Stating temperature signal and described level signal is packaged into 16 bit data, the lowest 15 is temperature Signal, the highest 1 is level signal, and described 16 bit data after encapsulation are stored into described storage chip In 7.When temperature signal and level signal store, 16 bit data after sealing up for safekeeping are used to store, Decrease storage number of times, be effectively increased storage speed, decrease storage data volume.
When described piston transient temperature detection components 12 adjusts sample rate, it is first added up described Hall and passes The quantity of the level signal that sensor 11 sends in a cycle of operation of described electromotor, further according to electricity The quantity of ordinary mail number calculates required time delay number, then prolongs required in each data sampling process Time number take into account so that described piston transient temperature detecting system can be according to required sampling speed Degree is operated.
In present embodiment, when the central shaft of described connecting rod 15 is mutual with the central shaft of described piston 14 Time parallel, the distance of described permanent magnet 10 and described Hall element 11 is at the one of described electromotor Minimum in individual cycle of operation, now, between described permanent magnet 10 and described Hall element 11 It is smaller than the operating distance of described Hall element 11.Only move to necessarily when described piston 14 During position, the level signal that described single-chip microcomputer 5 receives is just for low level;Described piston 14 is positioned at it During his position, the level signal that described single-chip microcomputer 5 receives is high level, i other words, according to institute The distance of reaction stating Hall element 11 can calculate original position and the final position of each circulation; According to each signal collection storage the time, may further determine that each transient temperature value with described The corresponding relation of the crank position of motivation.
Using piston transient temperature detecting system and the electromotor of the present invention, described storage chip is NAND Flash, it can improve the picking rate of piston transient temperature, and the measurement result obtained can Well reflect the transient temperature situation of change of piston;And the data in described storage chip can be disconnected Permanent retention in the case of electricity, saves electricity, it is ensured that the safety of data.According to described hall sensing The distance of reaction of device is i.e. readily determined original position and the final position of circulation, and then according to signal Collection storage the time, may further determine that the bent axle position of each transient temperature value and described electromotor The corresponding relation put;And described piston transient temperature detecting system gathers according to described Hall element The quantity of signal can control system sample rate, sample rate adjust flexible, wider.Described Piston transient temperature detecting system can be engine reliability, heat transfer, fuel oil be rebuffed and top land The research of carbon deposition phenomenon provides data support.Additionally, described Hall element is fixed on described piston wink On state temperature sensing assembly, described permanent magnet be fixed on described connecting rod and with described Hall element It is oppositely arranged, it is ensured that stablizing of the operating fields of described Hall element, and system can be made to install Simple and reliable operation.
As it will be easily appreciated by one skilled in the art that and the foregoing is only presently preferred embodiments of the present invention, Not in order to limit the present invention, all made within the spirit and principles in the present invention any amendment, etc. With replacement and improvement etc., should be included within the scope of the present invention.

Claims (5)

1. a piston transient temperature detecting system, it includes that permanent magnet, piston transient temperature detect Assembly and Hall element, it is characterised in that:
Described permanent magnet is arranged on connecting rod towards on the side of described piston transient temperature detection components, It is for providing magnetic field for described Hall element;
Described piston transient temperature detection components is oppositely arranged with described connecting rod, and it passes with described Hall Sensor is electrically connected with;Described piston temperature Transient detection assembly includes storage chip, described storage chip For NAND Flash, it is stored in described while gathering signal and by the described signal collected In the depositor of storage chip, again by the signal data in described depositor after described depositor is filled with The unified internal storage space being stored in described storage chip;
Described Hall element is arranged on described piston temperature Transient detection assembly, and it is used for providing electricity Ordinary mail number.
Piston transient temperature detecting system the most according to claim 1, it is characterised in that: described Described in piston transient temperature detecting system sends according to described Hall element in each cycle of operation The quantity of level signal controls sample rate.
Piston transient temperature detecting system the most according to claim 1, it is characterised in that: described The each described signal of storage chip storage is 16 and seals data up for safekeeping, seals up for safekeeping in data for described 16 Low 15 is temperature signal, and the highest 1 is level signal.
4. an electromotor, it includes piston, connecting rod, Magnet backing plate and mounting box, it is characterised in that:
Described electromotor also includes the piston transient temperature detection as described in any one of claims 1 to 3 System, described piston offers holding tank, and one end of described mounting box and described connecting rod is housed in described In holding tank;Described piston transient temperature sensing component is fixed on described mounting box, and it is with described Connecting rod is oppositely arranged;Described Magnet backing plate is fixed on described connecting rod and detects towards described piston transient temperature On the side of assembly, described Magnet is fixed on described Magnet backing plate.
Electromotor the most according to claim 4, it is characterised in that: the central shaft of described piston with When the central shaft of described connecting rod is parallel, the distance between described permanent magnet and described Hall element is Little, distance the most between the two is less than the operating distance of described Hall element.
CN201610596764.0A 2016-07-26 2016-07-26 piston transient temperature detecting system and engine Expired - Fee Related CN106017712B (en)

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CN106017712B CN106017712B (en) 2018-09-07

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Cited By (5)

* Cited by examiner, † Cited by third party
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
CN112146884A (en) * 2020-09-23 2020-12-29 潍柴动力股份有限公司 Piston temperature measuring mechanism
CN113027608A (en) * 2021-04-06 2021-06-25 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
CN113404680A (en) * 2021-05-13 2021-09-17 深圳市力博得科技有限公司 Water pump piston motion frequency measuring method and device and storage medium

Families Citing this family (1)

* Cited by examiner, † Cited by third party
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

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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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Cited By (6)

* Cited by examiner, † Cited by third party
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
CN112146884A (en) * 2020-09-23 2020-12-29 潍柴动力股份有限公司 Piston temperature measuring mechanism
CN112146884B (en) * 2020-09-23 2022-08-05 潍柴动力股份有限公司 Piston temperature measuring mechanism
CN113027608A (en) * 2021-04-06 2021-06-25 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
CN113404680A (en) * 2021-05-13 2021-09-17 深圳市力博得科技有限公司 Water pump piston motion frequency measuring method and device and storage medium

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