CN105784377A - Working balance fault diagnosis method and device for diesel engine based on instantaneous rotating speed - Google Patents
Working balance fault diagnosis method and device for diesel engine based on instantaneous rotating speed Download PDFInfo
- Publication number
- CN105784377A CN105784377A CN201610183416.0A CN201610183416A CN105784377A CN 105784377 A CN105784377 A CN 105784377A CN 201610183416 A CN201610183416 A CN 201610183416A CN 105784377 A CN105784377 A CN 105784377A
- Authority
- CN
- China
- Prior art keywords
- diesel engine
- cylinder
- peak value
- signal
- tooth
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/04—Testing internal-combustion engines
- G01M15/042—Testing internal-combustion engines by monitoring a single specific parameter not covered by groups G01M15/06 - G01M15/12
- G01M15/046—Testing internal-combustion engines by monitoring a single specific parameter not covered by groups G01M15/06 - G01M15/12 by monitoring revolutions
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The invention relates to a working balance fault diagnosis method and device for a diesel engine based on the instantaneous rotating speed. A signal synchronization technology is used to obtain the top dead center (TDC) and crankshaft corner signals of the diesel engine, the TDC signal serves as an identification to identity a complete work cycle of the diesel engine, the crankshaft corner signal is used to obtain the instantaneous rotating speed of each tooth of a fluted disc of the diesel engine, tooth average, period average and filtering technology are used to process the obtained instantaneous rotating speed signals and further to obtain a fluctuation diagram as well as the fluctuation ratio of the instantaneous rotating speed, a maximal working peak value corresponding to each cylinder is extracted according the practical TDC position and ignition sequence of the diesel engine, the maximal working peak values of the corresponding cylinder in multiple complete working periods in the same working condition of the diesel engine are compared and analyzed, and when deviation is over 30%, it is determined that the marine diesel engine has a fault that that gaps of an inlet valve is too large.
Description
Technical field
The present invention relates to technical field of ships, particularly relate to a kind of harmonious method for diagnosing faults of diesel engine work based on transient speed and device.
Background technology
Diesel engine is in running, its transient speed also exists regular fluctuation, transient speed has contained very abundant diesel engine running state information, by the monitoring of transient speed signals and analyzing and processing can be obtained the running status of diesel engine and the abundant information of fault.The power performance of diesel engine each cylinder in normal conditions is basically identical, diesel engine smooth running, though each cylinder Instantaneous Speed Fluctuations is variant, but always in a little scope, and it is regular to present certain.But when certain cylinder operation is abnormal, namely when diesel engine runs under fault case, the concordance of the power performance of each cylinder of diesel engine is destroyed, diesel engine smoothness of operation is deteriorated, fluctuation of speed signal can produce serious distortion, may determine that the quality of its diesel engine in-cylinder process accordingly, and Cylinder can be positioned according to firing order.
The cylinder power performance of diesel engine refers to the capacity for work of single cylinder, and its work process with this cylinder is closely related.Causing the reason that cylinder power performance declines a lot, for diesel engine, main cause has that injection timing is abnormal, internal combustion oil of cylinder supply is abnormal or air inlet pressure compression pressure is too low.It is primarily due to valve actuating mechanism fault, failure of fuel system, valve sealing fault and piston and liner packing is not sternly caused.May determine that these faults according to cylinder power performance, but judging nicety rate is on the low side and also can there is the problem that fault alarm postpones.
Summary of the invention
In view of above-mentioned analysis, harmonious method for diagnosing faults and device it is desirable to provide a kind of diesel engine based on transient speed works, in order to solve the problem that existing fault judgment method accuracy rate is on the low side and fault alarm postpones.
The purpose of the present invention realizes mainly by techniques below scheme:
The invention provides a kind of harmonious method for diagnosing faults of diesel engine work based on transient speed, including:
Signal simultaneous techniques is adopted to obtain top dead centre and the corner signal of each cylinder of diesel engine；
Process according to top dead centre and corner signal, obtain Instantaneous Speed Fluctuations rate；
According to instant rotation stability bandwidth, extract the maximum (top) speed stability bandwidth that each cylinder of described diesel engine is corresponding, i.e. maximum acting peak value, and the statistical threshold according to the maximum acting peak value of each cylinder under actual condition, carry out the diesel engine balanced fault diagnosis of work.
Further, the process obtaining Instantaneous Speed Fluctuations rate specifically includes:
Above endstop signal is as mark, identify the complete job circulation of diesel engine, obtaining the transient speed through diesel engine each tooth of fluted disc by corner signal, the transient speed signals got on average is processed by, the cycle average by tooth with filtering technique, obtains Instantaneous Speed Fluctuations rate.
Further, the each cylinder of described diesel engine maximum acting peak value is the transient speed signals collected to carry out tooth is average, the cycle average and after Filtering Processing, top dead center position according to diesel engine, each cylinder fire angle in conjunction with diesel engine, after dividing the Instantaneous Speed Fluctuations rate that each cylinder is corresponding, extraction obtains.
Further, according to the maximum acting peak value relative analysis of many groups full employment cycle respective cylinder obtained under diesel engine same operating, when deviation exceedes predetermined value, there is inlet valve excesssive gap fault in diagnosis marine diesel.
Wherein, described predetermined value is 30%.
Present invention also offers a kind of harmonious trouble-shooter of diesel engine work based on transient speed, including:
Acquisition module, for adopting signal simultaneous techniques to obtain top dead centre and the corner signal of each cylinder of diesel engine；
Instantaneous Speed Fluctuations rate computing module, for processing according to top dead centre and corner signal, obtains Instantaneous Speed Fluctuations rate；
Fault diagnosis module, for according to instant rotation stability bandwidth, extracting the maximum (top) speed stability bandwidth that each cylinder of described diesel engine is corresponding, i.e. maximum acting peak value, and the statistical threshold according to the maximum acting peak value of each cylinder under actual condition, carry out the diesel engine balanced fault diagnosis of work.
Further, described Instantaneous Speed Fluctuations rate computing module specifically for, above endstop signal is as mark, identify the complete job circulation of diesel engine, the transient speed through diesel engine each tooth of fluted disc is obtained by corner signal, the transient speed signals got on average is processed by, the cycle average by tooth with filtering technique, obtains Instantaneous Speed Fluctuations rate.
Further, the described fault diagnosis module transient speed signals to collecting carries out that tooth is average, the cycle average and after Filtering Processing, top dead center position according to diesel engine, each cylinder fire angle in conjunction with diesel engine, after dividing the Instantaneous Speed Fluctuations rate that each cylinder is corresponding, extract and obtain the maximum acting peak value of each cylinder of diesel engine.
Further, described fault diagnosis module is according to the maximum acting peak value relative analysis of many groups full employment cycle respective cylinder obtained under diesel engine same operating, and when deviation exceedes predetermined value, inlet valve excesssive gap fault occurs in diagnosis marine diesel.
Wherein, described predetermined value is 30%.
The present invention has the beneficial effect that:
The present invention can find the cylinder of diesel engine balanced exception of work early, and can navigate to the cylinder that diesel engine is abnormal, and speed is fast, and efficiency is high.
Other features and advantages of the present invention will be set forth in the following description, and, becoming apparent from description of part, or understand by implementing the present invention.The purpose of the present invention and other advantages can be realized by structure specifically noted in the description write, claims and accompanying drawing and be obtained.
Accompanying drawing explanation
Accompanying drawing is only for illustrating the purpose of specific embodiment, and is not considered as limitation of the present invention, and in whole accompanying drawing, identical reference marks represents identical parts.
Fig. 1 is the schematic flow sheet of method described in the embodiment of the present invention；
Fig. 2 illustrates that high frequency clock counting method measures transient speed schematic diagram；
Fig. 3 illustrates that certain cylinder misfire fault state diesel engine flash speed stability bandwidth contrasts；
Fig. 4 illustrates that certain cylinder misfire fault state diesel engine each cylinder Instantaneous Speed Fluctuations rate work done peak value contrasts；
Fig. 5 is the structural representation of device described in the embodiment of the present invention.
Detailed description of the invention
Specifically describing the preferred embodiments of the present invention below in conjunction with accompanying drawing, wherein, accompanying drawing constitutes the application part, and is used for together with embodiments of the present invention explaining principles of the invention.
First, it is described in detail in conjunction with 1 to 4 pairs of the method for the invention of accompanying drawing.
As it is shown in figure 1, the schematic flow sheet that Fig. 1 is the harmonious method for diagnosing faults of diesel engine work based on transient speed, specifically may include steps of:
First, signal simultaneous techniques is adopted to obtain top dead centre and the corner signal of each cylinder of diesel engine；
Above-mentioned diesel engine top dead centre signal and transient speed signals synchronous acquisition are the above endstop signal external trigger signals as FPGA, and its sampling length needs to be acquired according to the number of teeth of diesel engine flywheel, it is achieved the synchronous acquisition of signal and being accurately positioned；
Then, above endstop signal, as mark, identifies the complete job circulation of diesel engine, obtains the transient speed through diesel engine each tooth of fluted disc by corner signal, the moment speed change obtained is carried out that tooth is average, the cycle average and Filtering Processing, obtains Instantaneous Speed Fluctuations rate；Here, transient speed is obtained by corner signal, it is possible to obtain the transient speed that precision comparison is high, and processing speed is fast.
Then, according to the actually dead-centre position of diesel engine and firing order, the maximum (top) speed stability bandwidth that each cylinder is corresponding is extracted, i.e. maximum acting peak value；
Finally, according to the maximum acting peak value relative analysis of many groups full employment cycle respective cylinder obtained under diesel engine same operating, when deviation exceedes a certain predetermined value (such as 30%), there is inlet valve excesssive gap fault in diagnosis marine diesel.
Fig. 2 illustrates and utilizes FPGA high frequency clock counter synchronisation to gather top dead centre signal and transient speed signals, above endstop signal is as external trigger and marking signal, can intercepting the transient speed signals of the specific number of teeth in each circulation of diesel engine as start mark, its sampling length needs the flywheel number of teeth according to diesel engine to be controlled.
Fig. 3 illustrates that certain diesel engine there occurs Instantaneous Speed Fluctuations rate and normal operating conditions comparison diagram under certain working condition during work harmony fault (misfire fault).Under two states, after diesel engine generation misfire fault, top dead centre and the synchronized collection of transient speed signals, tooth is average, the cycle is average, after Filtering Processing, and process, according to top dead center position and firing order and fire angle, the comparison diagram obtained.
Fig. 4 illustrates and calculates on correct basis in Instantaneous Speed Fluctuations rate, find the maximum acting peak value within the scope of each cylinder correspondence firing interval angle, thus add up the threshold diagnostic obtained according to the maximum acting peak value under diesel engine correspondence operating mode, may thereby determine that whether diesel engine there occurs work harmony fault, and can determine that Cylinder.
Next in conjunction with accompanying drawing 5, device described in the embodiment of the present invention is described in detail.
As it is shown in figure 5, Fig. 5 is a kind of harmonious trouble-shooter of diesel engine work based on transient speed, including:
Acquisition module, for adopting signal simultaneous techniques to obtain top dead centre and the corner signal of each cylinder of diesel engine；
Instantaneous Speed Fluctuations rate computing module, for processing according to top dead centre and corner signal, obtains Instantaneous Speed Fluctuations rate；
Fault diagnosis module, for according to instant rotation stability bandwidth, extracting the maximum (top) speed stability bandwidth that each cylinder of described diesel engine is corresponding, i.e. maximum acting peak value, and the statistical threshold according to the maximum acting peak value of each cylinder under actual condition, carry out the diesel engine balanced fault diagnosis of work.
Wherein, Instantaneous Speed Fluctuations rate computing module specifically for, above endstop signal is as mark, identify the complete job circulation of diesel engine, the transient speed through diesel engine each tooth of fluted disc is obtained by corner signal, the transient speed signals got on average is processed by, the cycle average by tooth with filtering technique, obtains Instantaneous Speed Fluctuations rate.
The fault diagnosis module transient speed signals to collecting carries out that tooth is average, the cycle average and after Filtering Processing, top dead center position according to diesel engine, in conjunction with each cylinder fire angle of diesel engine, after dividing the Instantaneous Speed Fluctuations rate that each cylinder is corresponding, extract and obtain the maximum acting peak value of each cylinder of diesel engine.
Fault diagnosis module is according to the maximum acting peak value relative analysis of many groups full employment cycle respective cylinder obtained under diesel engine same operating, and when deviation exceedes predetermined value (30%), inlet valve excesssive gap fault occurs in diagnosis marine diesel.
In sum, embodiments provide a kind of harmonious method for diagnosing faults of cylinder of diesel engine work based on instantaneous speed of walking around and device, owing to also having close contacting between the work process in the transient speed signals of diesel engine and each cylinder, the fluctuation of diesel engine flash speed signal is to act on the direct reflection of total tangential moment variations on bent axle, is the coefficient results such as gas pressure, reciprocal inertia force, frictional force and load.The fluctuation of cylinder pressure can be embodied in the fluctuation of transient speed, therefore it is feasible for utilizing the fault that transient speed diagnosis affects gas pressure change, and is better than existing method for diagnosing faults.The present invention can find the cylinder of diesel engine balanced exception of work early, and can navigate to the cylinder that diesel engine is abnormal, and speed is fast, and efficiency is high.
Although having described the present invention and advantage thereof in detail it should be appreciated that various change, replacement and conversion can be carried out when without departing from the spirit and scope of the present invention being defined by the claims appended hereto.And, scope of the present application is not limited only to the specific embodiment of the process described by description, equipment, means, method and steps.One of ordinary skilled in the art will readily appreciate that from the disclosure, can use process, equipment, means, method or step that perform the function essentially identical to corresponding embodiment described herein or obtain the result essentially identical with it, that existing and future is to be developed according to the present invention.Therefore, appended claim is intended in their scope to include such process, equipment, means, method or step.
The above; being only the present invention preferably detailed description of the invention, but protection scope of the present invention is not limited thereto, any those familiar with the art is in the technical scope that the invention discloses; the change that can readily occur in or replacement, all should be encompassed within protection scope of the present invention.
Claims (10)
1. the harmonious method for diagnosing faults of diesel engine work based on transient speed, it is characterised in that including:
Signal simultaneous techniques is adopted to obtain top dead centre and the corner signal of each cylinder of diesel engine；
Process according to top dead centre and corner signal, obtain Instantaneous Speed Fluctuations rate；
According to instant rotation stability bandwidth, extract the maximum (top) speed stability bandwidth that each cylinder of described diesel engine is corresponding, i.e. maximum acting peak value, and the statistical threshold according to the maximum acting peak value of each cylinder under actual condition, carry out the diesel engine balanced fault diagnosis of work.
2. method according to claim 1, it is characterised in that specifically include: the process obtaining Instantaneous Speed Fluctuations rate specifically includes:
Above endstop signal is as mark, identify the complete job circulation of diesel engine, obtaining the transient speed through diesel engine each tooth of fluted disc by corner signal, the transient speed signals got on average is processed by, the cycle average by tooth with filtering technique, obtains Instantaneous Speed Fluctuations rate.
3. method according to claim 1, it is characterized in that, the each cylinder of described diesel engine maximum acting peak value is the transient speed signals collected to carry out tooth is average, the cycle average and after Filtering Processing, top dead center position according to diesel engine, each cylinder fire angle in conjunction with diesel engine, after dividing the Instantaneous Speed Fluctuations rate that each cylinder is corresponding, extraction obtains.
4. method according to claim 1, it is characterised in that according to the maximum acting peak value relative analysis of many groups full employment cycle respective cylinder obtained under diesel engine same operating, when deviation exceedes predetermined value, there is inlet valve excesssive gap fault in diagnosis marine diesel.
5. method according to claim 4, it is characterised in that described predetermined value is 30%.
6. the harmonious trouble-shooter of diesel engine work based on transient speed, it is characterised in that including:
Acquisition module, for adopting signal simultaneous techniques to obtain top dead centre and the corner signal of each cylinder of diesel engine；
Instantaneous Speed Fluctuations rate computing module, for processing according to top dead centre and corner signal, obtains Instantaneous Speed Fluctuations rate；
Fault diagnosis module, for according to instant rotation stability bandwidth, extracting the maximum (top) speed stability bandwidth that each cylinder of described diesel engine is corresponding, i.e. maximum acting peak value, and the statistical threshold according to the maximum acting peak value of each cylinder under actual condition, carry out the diesel engine balanced fault diagnosis of work.
7. device according to claim 6, it is characterized in that, specifically include: described Instantaneous Speed Fluctuations rate computing module specifically for, above endstop signal is as mark, identify the complete job circulation of diesel engine, obtaining the transient speed through diesel engine each tooth of fluted disc by corner signal, the transient speed signals got on average is processed by, the cycle average by tooth with filtering technique, obtains Instantaneous Speed Fluctuations rate.
8. device according to claim 6, it is characterized in that, the described fault diagnosis module transient speed signals to collecting carries out that tooth is average, the cycle average and after Filtering Processing, top dead center position according to diesel engine, each cylinder fire angle in conjunction with diesel engine, after dividing the Instantaneous Speed Fluctuations rate that each cylinder is corresponding, extract and obtain the maximum acting peak value of each cylinder of diesel engine.
9. device according to claim 6, it is characterized in that, described fault diagnosis module is according to the maximum acting peak value relative analysis of many groups full employment cycle respective cylinder obtained under diesel engine same operating, and when deviation exceedes predetermined value, inlet valve excesssive gap fault occurs in diagnosis marine diesel.
10. device according to claim 9, it is characterised in that described predetermined value is 30%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610183416.0A CN105784377A (en) | 2016-03-28 | 2016-03-28 | Working balance fault diagnosis method and device for diesel engine based on instantaneous rotating speed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610183416.0A CN105784377A (en) | 2016-03-28 | 2016-03-28 | Working balance fault diagnosis method and device for diesel engine based on instantaneous rotating speed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105784377A true CN105784377A (en) | 2016-07-20 |
Family
ID=56391125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610183416.0A Pending CN105784377A (en) | 2016-03-28 | 2016-03-28 | Working balance fault diagnosis method and device for diesel engine based on instantaneous rotating speed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105784377A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108287074A (en) * | 2017-12-25 | 2018-07-17 | 中国船舶重工集团公司第七〇九研究所 | A kind of V-type machine combustion position on-line monitoring and diagnosis method |
| CN108593304A (en) * | 2018-03-23 | 2018-09-28 | 广东核电合营有限公司 | Nuclear power Emergency diesel multi-state alert status monitors and diagnostic analysis system and method |
| CN109779742A (en) * | 2019-03-21 | 2019-05-21 | 东风汽车集团有限公司 | A kind of failure monitor system and method for engine charge electronics relief valve |
| CN110542560A (en) * | 2019-09-29 | 2019-12-06 | 潍柴动力股份有限公司 | detection method and detection system for valve clearance fault and automobile |
| CN114542281A (en) * | 2021-12-23 | 2022-05-27 | 中国北方发动机研究所(天津) | Diesel engine fire fault identification method based on multi-source data fusion |
| CN114563189A (en) * | 2022-02-28 | 2022-05-31 | 西北工业大学 | Unmanned aerial vehicle engine fault diagnosis method based on instantaneous rotating speed |
| CN114878173A (en) * | 2022-05-20 | 2022-08-09 | 北京理工大学 | Method for judging combustion uniformity of each cylinder based on rotation speed peak value analysis |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5539644A (en) * | 1992-11-17 | 1996-07-23 | Nippondenso Co., Ltd. | System for detecting misfire in a multi-cylinder internal combustion engine |
| JP3085382B2 (en) * | 1989-08-25 | 2000-09-04 | 株式会社日立製作所 | Method for controlling combustion state of internal combustion engine |
| CN1389717A (en) * | 2002-07-10 | 2003-01-08 | 韩晓明 | Engine perfomance monitoring method and monitor |
| US20130096805A1 (en) * | 2010-06-11 | 2013-04-18 | Isuzu Motors Limited | Combustion diagnosis device for internal combustion engine |
| CN203069611U (en) * | 2012-12-17 | 2013-07-17 | 武汉理工大学 | FPGA (Field Programmable Gate Array) based instantaneous rotating speed online monitoring device for ship diesel engine |
| CN103900824A (en) * | 2014-03-27 | 2014-07-02 | 哈尔滨工程大学 | Method for diagnosing faults of diesel engine based on instant rotary speed clustering analysis |
-
2016
- 2016-03-28 CN CN201610183416.0A patent/CN105784377A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3085382B2 (en) * | 1989-08-25 | 2000-09-04 | 株式会社日立製作所 | Method for controlling combustion state of internal combustion engine |
| US5539644A (en) * | 1992-11-17 | 1996-07-23 | Nippondenso Co., Ltd. | System for detecting misfire in a multi-cylinder internal combustion engine |
| CN1389717A (en) * | 2002-07-10 | 2003-01-08 | 韩晓明 | Engine perfomance monitoring method and monitor |
| US20130096805A1 (en) * | 2010-06-11 | 2013-04-18 | Isuzu Motors Limited | Combustion diagnosis device for internal combustion engine |
| CN203069611U (en) * | 2012-12-17 | 2013-07-17 | 武汉理工大学 | FPGA (Field Programmable Gate Array) based instantaneous rotating speed online monitoring device for ship diesel engine |
| CN103900824A (en) * | 2014-03-27 | 2014-07-02 | 哈尔滨工程大学 | Method for diagnosing faults of diesel engine based on instant rotary speed clustering analysis |
Non-Patent Citations (4)
| Title |
|---|
| 余永华: "船舶柴油机动力平衡性监测***开发", 《中国航海》 * |
| 余永华: "船舶柴油机瞬时转速仿真计算模型的研究", 《内燃机学报》 * |
| 余永华: "船舶柴油机瞬时转速和热力参数监测诊断技术研究", 《中国博士学位论文全文数据库工程科技Ⅱ辑》 * |
| 石磊: "8000kW海洋救助船主动力装置综合监测方法研究", 《中国优秀硕士学位论文全文数据库工程科技Ⅱ辑》 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108287074A (en) * | 2017-12-25 | 2018-07-17 | 中国船舶重工集团公司第七〇九研究所 | A kind of V-type machine combustion position on-line monitoring and diagnosis method |
| CN108593304A (en) * | 2018-03-23 | 2018-09-28 | 广东核电合营有限公司 | Nuclear power Emergency diesel multi-state alert status monitors and diagnostic analysis system and method |
| CN109779742A (en) * | 2019-03-21 | 2019-05-21 | 东风汽车集团有限公司 | A kind of failure monitor system and method for engine charge electronics relief valve |
| CN110542560A (en) * | 2019-09-29 | 2019-12-06 | 潍柴动力股份有限公司 | detection method and detection system for valve clearance fault and automobile |
| CN110542560B (en) * | 2019-09-29 | 2021-07-09 | 潍坊内燃机质量检验中心有限公司 | Detection method and detection system for valve clearance fault and automobile |
| CN114542281A (en) * | 2021-12-23 | 2022-05-27 | 中国北方发动机研究所(天津) | Diesel engine fire fault identification method based on multi-source data fusion |
| CN114542281B (en) * | 2021-12-23 | 2023-03-14 | 中国北方发动机研究所(天津) | Diesel engine fire fault identification method based on multi-source data fusion |
| CN114563189A (en) * | 2022-02-28 | 2022-05-31 | 西北工业大学 | Unmanned aerial vehicle engine fault diagnosis method based on instantaneous rotating speed |
| CN114563189B (en) * | 2022-02-28 | 2024-01-12 | 西北工业大学 | Unmanned aerial vehicle engine fault diagnosis method based on instantaneous rotation speed |
| CN114878173A (en) * | 2022-05-20 | 2022-08-09 | 北京理工大学 | Method for judging combustion uniformity of each cylinder based on rotation speed peak value analysis |
| CN114878173B (en) * | 2022-05-20 | 2023-08-18 | 北京理工大学 | Method for judging combustion uniformity of each cylinder based on rotation speed peak analysis |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105784377A (en) | Working balance fault diagnosis method and device for diesel engine based on instantaneous rotating speed | |
| CN100491954C (en) | Device for detecting engine condition based on pure vibration signal and method thereof | |
| Varbanets et al. | Analyse of marine diesel engine performance | |
| Varbanets et al. | Improvement of diagnosing methods of the diesel engine functioning under operating conditions | |
| Li et al. | A non-destructive fault diagnosis method for a diaphragm compressor in the hydrogen refueling station | |
| CN105003373B (en) | A kind of injection timing method for diagnosing faults based on the observation of rail pressure waveform feature parameter | |
| JPH0130098B2 (en) | ||
| CN102095588A (en) | Intelligent fault diagnosis method for diesel engine | |
| CN105865794B (en) | Engine fire fault diagnosis method based on short time discrete Fourier transform and principal component analysis | |
| CN108956107A (en) | Couple the Fault tree diagnosis method of the reciprocating compressor typical fault of Triangular Fuzzy Number | |
| Tamura et al. | Misfire detection on internal combustion engines using exhaust gas temperature with low sampling rate | |
| CN113431680B (en) | Full-period acquisition and instantaneous speed calculation method of engine monitoring signals based on tooth pulse of tooth-lacking fluted disc | |
| Arroyo et al. | Diagnostic method based on the analysis of the vibration and acoustic emission energy for emergency diesel generators in nuclear plants | |
| CN105090001A (en) | Reciprocating compressor signal complete period phase correction method based on similarity analysis | |
| US9562823B2 (en) | Determining cylinder health in a reciprocating piston engine | |
| CN105571871B (en) | A kind of method of inline diagnosis diesel engine work inhomogeneities | |
| CN102944427B (en) | Monitoring and diagnosing method for combustion quality of internal combustion engine | |
| EP3181878A1 (en) | Determining cylinder health in a reciprocating piston engine | |
| CN202081976U (en) | Pressure detection and fault diagnosis device for diesel engine cylinder | |
| WO2023138021A1 (en) | Method and apparatus for displaying parameter signals through angle domain | |
| US20230296063A1 (en) | Misfire Classification Method and Control Unit for an Internal Combustion Engine | |
| CN108287074A (en) | A kind of V-type machine combustion position on-line monitoring and diagnosis method | |
| Zhang et al. | Research on the diagnosis method of reciprocating compressor valve leakage fault with vibration signal | |
| CN107340088B (en) | A kind of crank torque measuring system | |
| CN116698428A (en) | Diesel engine fault diagnosis method, device, diesel engine and storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160720 |