CN101644199A - Method and device for simulating faults of zirconia-type oxygen sensor for electronic injection engine - Google Patents
Method and device for simulating faults of zirconia-type oxygen sensor for electronic injection engine Download PDFInfo
- Publication number
- CN101644199A CN101644199A CN 200910063796 CN200910063796A CN101644199A CN 101644199 A CN101644199 A CN 101644199A CN 200910063796 CN200910063796 CN 200910063796 CN 200910063796 A CN200910063796 A CN 200910063796A CN 101644199 A CN101644199 A CN 101644199A
- Authority
- CN
- China
- Prior art keywords
- signal
- lambda sensor
- oxygen sensor
- fault
- fault simulation
- 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.)
- Granted
Links
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 59
- 239000001301 oxygen Substances 0.000 title claims abstract description 59
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 59
- 238000002347 injection Methods 0.000 title claims abstract description 22
- 239000007924 injection Substances 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000004088 simulation Methods 0.000 claims abstract description 46
- 230000000630 rising effect Effects 0.000 claims abstract description 5
- 239000000446 fuel Substances 0.000 claims description 12
- 238000005070 sampling Methods 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 3
- 230000011664 signaling Effects 0.000 claims description 3
- 238000010977 unit operation Methods 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000012774 diagnostic algorithm Methods 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- -1 oxonium ion Chemical class 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000013456 study Methods 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Landscapes
- Combined Controls Of Internal Combustion Engines (AREA)
- Measuring Oxygen Concentration In Cells (AREA)
Abstract
The invention relates to a method and a device for simulating faults of a zirconia-type oxygen sensor for an electronic injection engine. The oxygen sensor (comprising a front oxygen sensor or a rearoxygen sensor or both the oxygen sensor and the rear oxygen sensor) for the electronic injection engine can generate independent fault-simulating modes, such as upper-limited voltage upward bias, upper-limited voltage downward bias, lower-limited voltage upward bias, lower-limited voltage downward bias, time response delay, rising edge rising slope change and falling edge falling slope change andmixed fault-simulating modes mixing the four fault modes of upper-limited voltage bias, lower-limited voltage bias, time response delay and slope change in any proportion so that fault simulation signal output is further accordant with practical fault signal output of the oxygen sensor, and the development and the authentication of an OBD system and the needs for other related search are facilitated.
Description
Technical field
The invention belongs to a kind of electronic fuel injection engine (electric control gasoline injection engine) test instrument, especially a kind of simulating faults of zirconia-type oxygen sensor for electronic injection engine method and device of making.
Background technique
According to Abgasgesetz GB18352.3-2005 " light-duty vehicle pollutant emission limit and the method for measurement " requirement of China national environmental protection general bureau and State Administration for Quality Supervision and Inspection and Quarantine in issue on April 27th, 2005; China implemented in full the phase III emission standard in 2008; light-duty vehicle must be equipped On-board diagnostic (OBD, onboard diagnostic system).According to rules and regulations, the parts of onboard diagnostic system monitoring comprise: three way catalytic converter, lambda sensor, engine fire rate, emission control parts and system and any circuit relevant with discharging.
Lambda sensor is that (its function is the air fuel ratio signal that obtains mixed gas by the content of oxonium ion in the monitoring exhaust to exhaust gas oxygen sensor for Exhaust Gas Oxygen Sensor, abbreviation EGO), and is electrical signal input ECU with this signal transition.ECU is according to oxygen sensor signal, injection time is revised, realize air-fuel ratio feedback control (closed loop control), thereby between excess air coefficient (λ) is controlled at 0.98～1.02 (air fuel ratio A/F is about 14.7), make motor obtain the mixed gas of optium concentration, thereby reach the purpose that reduces the discharge of harmful gases amount and save fuel oil.
In electronic fuel injection engine, the OBD system needs the oxygen sensor signal that electrical control system for engine adopts is monitored in real time, in case find that the oxygen sensor signal of electrical control system for engine is undesired, the OBD system will report to the police.In electrical control system for engine, the lambda sensor that uses can be divided into two major types at present: one) zirconia-type oxygen sensor, zirconia-type oxygen sensor are the variations that the variation of the oxygen molecule content in the waste gas is converted to voltage.Two) titanium oxide type lambda sensor, titanium dioxide type lambda sensor then are the variations that the variation of the oxygen molecule content in the waste gas is converted to sensor resistance.Following lambda sensor all refers to zirconia-type oxygen sensor.
Under following three kinds of occasions, need make the lambda sensor of electronic fuel injection engine produce fault: one) when the oxygen sensor signal monitoring function of exploitation OBD system, to need motor to want aerobic sensor fault phenomenon.When two) whether effectively monitoring the lambda sensor fault, also need to make the lambda sensor fault of motor at the checking new car or in OBD system with car.Three) be used for the test and the checking of the dioxygen sensor diagnostic algorithm of triple mode catalytic converter fault diagnosis.These faults are difficult in the lambda sensor of the new electronic fuel injection engine of a cover and produce, and are difficult to produce quantitative lambda sensor fault.
Chinese invention patent " a kind of oxygen sensor of electric control gasoline injection engine fault generating method and the device " (patent No.: 200710051383.5) need to use independent integrated circuit board and removable computer and 220v power supply, give with the car use and bring inconvenient part; Also there are shortcomings such as the fault simulation form is few.
Summary of the invention
The present invention is directed to the electronic fuel injection engine control system, purpose provide a kind of make electronic fuel injection engine with lambda sensor produce skew on the upper voltage limit, upper voltage limit postpone skew on skew, the lower voltage limit, lower voltage limit skew down, time response down, the rate of rise of rising edge changes and the descending slope of trailing edge changes independent failure simulation model and upper voltage limit skew, lower voltage limit skew, postpone time response and slope changes the arbitrary proportion mixed fault simulation model of four kinds of fault modes, makes fault simulation signal output and the output of physical fault signal more meet; For use in the exploitation of OBD system and the simulating faults of zirconia-type oxygen sensor for electronic injection engine method and the device of the needs of checking and other correlative studys.。
To achieve these goals, the method applied in the present invention is: disconnect the signaling line that is connected between lambda sensor and the ECU (ECU (Electrical Control Unit)), a lambda sensor fault simulation device is set between lambda sensor and ECU, the signal of lambda sensor output is not directly imported ECU, and directly import lambda sensor fault simulation device, lambda sensor fault simulation device is sampled to the signal of lambda sensor output by A/D converter, the main control unit of lambda sensor fault simulation device is superimposed voltage shifted signal or operating lag signal or while superimposed voltage shifted signal and operating lag signal on the basis of this signal, make it to produce the analogue signal of lambda sensor fault, utilize the signal after D/A converter is handled this to export to electronic fuel injection engine ECU then.
Above-mentioned lambda sensor fault simulation device is by main control singlechip, the D/A output module, LCD MODULE, module is set parameter and master system constitutes, wherein the A/D of main control singlechip sampling input end links to each other with the output signal of lambda sensor, the D/A output module links to each other with common I/O mouth with the SPI mouth of main control singlechip, LCD MODULE links to each other with the I/O mouth of main control singlechip, parameter is provided with module and links to each other with the I/O mouth of main control singlechip, and master system links to each other by the RS232 serial ports with main control singlechip.
Lambda sensor fault simulation device is by LCD MODULE J1, main control singlechip U1, and D/A conversion chip U2, electrical level transferring chip U3, button B1～B6, resistance R 1-R6, capacitor C 1-C8 constitutes, wherein:
Cut-off signal connecting line between lambda sensor and ECU directly inserts lambda sensor fault simulation device with the lambda sensor output signal, links to each other with the A/D mouth of main control singlechip; The data port of LCD MODULE links to each other with main control singlechip, control mouthful RST, INT, BUSY, CS2, CS1, RD, WR, RS link to each other with the common I/O mouth of main control singlechip, the T1I of electrical level transferring chip, resistance R 10 link to each other with serial ports TXD0, the RXD0 of main control singlechip, and button output B1-B6 links to each other with the common I/O mouth of main control singlechip; The control mouth SDI of D/A conversion chip, CLK, CS, DACS, REG, RSET link to each other with SCK with the MOSI of the SPI mouth of main control singlechip respectively and common I/O mouth links to each other, and delivery outlet OUTA, the OUTB of D/A conversion chip links to each other with the input interface of ECU.
Description of drawings
Fig. 1 is principle of the present invention and connection diagram.
Fig. 2 is an electrical connection diagram of the present invention.
Fig. 3 is skew phenomenon of the failure figure on the oxygen sensor signal upper voltage limit of the present invention.
Fig. 4 is skew phenomenon of the failure figure under the oxygen sensor signal upper voltage limit of the present invention.
Fig. 5 is skew phenomenon of the failure figure on the oxygen sensor signal lower voltage limit of the present invention.
Fig. 6 is skew phenomenon of the failure figure on the oxygen sensor signal lower voltage limit of the present invention.
Fig. 7 is oxygen sensor signal delay fault time response phenomenon figure of the present invention.
Fig. 8 is that oxygen sensor signal slope of the present invention changes phenomenon of the failure figure.
Fig. 9 is oxygen sensor signal mixed mode fault simulation phenomenon figure of the present invention
Among Fig. 1: 1,2-heater wire, 3,4-signaling line.
Embodiment
The present invention is described in further detail below in conjunction with drawings and Examples, but this embodiment should not be construed as limitation of the present invention.
According to Fig. 1, Fig. 2, lambda sensor fault simulation device are installed between lambda sensor and the ECU (Electrical Control Unit) ECU, and lambda sensor heater wire 1,2 still links to each other with ECU, and the fault generating means is not controlled heater wire; Oxygen sensor signal ground 3 still links to each other with ECU, handles altogether with the power supply ground of fault simulation device; Oxygen sensor signal output line 4 disconnect with ECU between be connected, the output signal of lambda sensor is input to the A/D sampling channel of fault simulation device main control singlechip, main control singlechip is the cycle oxygen sensor signal to be sampled with 10ms, analogue signal is changed into digital signal, and with the LCD MODULE real-time update and show sampled signal and send sampled signal to master system by serial ports, master control system is carried out the scale conversion to the digital quantity signal of gathering, after variation processing and operating lag are handled, output to the D/A modular converter and be converted to the ECU that analog amount is exported to electronic fuel injection engine.
Master system software of the present invention.Lambda sensor fault simulation device has two kinds of operating modes: unit operation and on-line execute.Unit operation pattern: use the lambda sensor simulator to carry out the lambda sensor fault simulation separately.On-line execute pattern: lambda sensor fault simulation device is linked to each other the back by upper computer software realization lambda sensor fault simulation with master system.
Relevant parameter under this pattern is set to:
Upper limit skew: be used to be provided with on the lambda sensor trouble signal upper limit side-play amount under the side-play amount or the upper limit, the scope of skew is 0～± 0.3V, degree of regulation is 0.02v;
Lower limit skew: be used to be provided with on the lambda sensor trouble signal lower limit side-play amount under side-play amount or the lower limit, the scope of skew is 0～± 0.3V, degree of regulation is 0.02v;
Time lag: be used to be provided with the lambda sensor trouble signal and postpone time response, the scope of delay is 0～2S, and degree of regulation is 0.01s;
Smooth-going processing: be used to be provided with lambda sensor trouble signal digital filtering and mean value and handle, be used to regulate oxygen sensor signal rising edge or trailing edge slope, regulation range is 0～20, and degree of regulation is 1;
Proper functioning: normal mode of operation.
Fig. 3 shows is skew phenomenon of the failure figure on the oxygen sensor signal upper voltage limit realized of the present invention, the oxygen sensor signal of thick black line for gathering among the figure, and fine rule be the lambda sensor fault simulation signal of exporting after treatment.When producing fault shown in Figure 4, with 0.3V is basic point, offset voltage signal is gone up in one of input signal stack, input voltage calculated output signal stack amount when 0.3V is 0, the difference of voltage signal and 0.3V is big more, and then the last stack amount of calculated output signal generation is big more, thereby realizes being offset on the upper voltage limit, the regulation range of stack amount is 0-0.3V, and degree of regulation is 0.02V.
Fig. 4 shows is the oxygen sensor signal upper voltage limit realized of the present invention skew phenomenon of the failure figure down, the oxygen sensor signal of thick black line for gathering among the figure, and fine rule be the lambda sensor fault simulation signal of exporting after treatment.When producing fault shown in Figure 5, with 0.3V is basic point, to following offset voltage signal of input signal stack, the input voltage stack amount that calculated output signal takes place when 0.3V is 0, the difference of signal voltage and 0.3V is big more, and then the following stack amount of calculated output signal generation is big more, thereby realizes upper voltage limit skew down, the regulation range of stack amount is 0-0.3V, and degree of regulation is 0.02V.
Fig. 5 shows is skew phenomenon of the failure figure on the oxygen sensor signal lower voltage limit realized of the present invention, the oxygen sensor signal of thick black line for gathering among the figure, and fine rule be the lambda sensor fault simulation signal of exporting after treatment.When producing fault shown in Figure 6, with 0.7V is basic point, offset voltage signal is gone up in one of input signal stack, the input voltage stack amount that calculated output signal takes place when 0.7V is 0, the difference of signal voltage and 0.7V is big more, and then the last stack amount of calculated output signal generation is big more, thereby realizes being offset on the lower voltage limit, the regulation range of stack amount is 0-0.3V, and degree of regulation is 0.02V.
Fig. 6 shows is the oxygen sensor signal lower voltage limit realized of the present invention skew phenomenon of the failure figure down, the oxygen sensor signal of thick black line for gathering among the figure, and fine rule be the lambda sensor fault simulation signal of exporting after treatment.When producing fault shown in Figure 7, with 0.7V is basic point, to voltage signal that is offset down of input signal stack, just can make the input voltage stack amount that calculated output signal takes place when 0.7V is 0, the difference of signal voltage and 0.7V is big more, and then the following stack amount of calculated output signal generation is big more, thereby realizes lower voltage limit skew down, the regulation range of stack amount is 0-0.3V, and degree of regulation is 0.02V.
That Fig. 7 shows is the oxygen sensor signal delay fault time response phenomenon figure that the present invention realizes.The oxygen sensor signal of thick black line for gathering among the figure, fine rule is a lambda sensor fault simulation signal after treatment.After master control system collects oxygen sensor signal, the oxygen sensor signal of gathering in the t0 is for the previous period preserved, and export a fixed-analog signal in the period at this section and give ECU, after reaching the retard time of setting, the signal of preserving is carried out D/A output by the principle of first in first out, thereby change the cycle of oxygen sensor signal output, realize the fault simulation that lambda sensor is aging.Can change the output cycle of oxygen sensor signal by change t0, the regulation range of time t0 is 0～2S, and degree of regulation is 0.01s.
What Fig. 8 showed is that the oxygen sensor signal slope that the present invention realizes changes phenomenon of the failure figure.The oxygen sensor signal of thick black line for gathering among the figure, fine rule is a lambda sensor fault simulation signal after treatment.After master control system collects oxygen sensor signal, calculate the mean value of the interior oxygen sensor signal of gathering of t1 for the previous period, change the slope that oxygen sensor signal rises or descends by the mean value of signal is handled, again this mean value is exported to ECU by the D/A modular converter.By changing the variation slope that t1 changes oxygen sensor signal, the regulation range 0～20 of time t1.
That Fig. 9 shows is the oxygen sensor signal mixed fault pattern phenomenon of the failure figure that the present invention realizes.The oxygen sensor signal of thick black line for gathering among the figure, fine rule is a lambda sensor fault simulation signal after treatment.After master control system collects oxygen sensor signal, respectively the signal that samples is carried out being offset and postponing three kinds of fault simulations time response under skew, the lower voltage limit on the upper voltage limit superposeing, master control system is exported to ECU with this signal by the D/A modular converter.Adjust the output that parameter realizes the fault simulation signal of different blended composition and division in a proportion that is provided with of three kinds of fault modes respectively.
The content that is not described in detail in this specification belongs to related domain professional and technical personnel's known prior art.
Claims (4)
1, a kind of zirconia-type oxygen sensor for electronic injection engine fault generating method, the method that adopts is: disconnect the signaling line that is connected between lambda sensor and the ECU (Electrical Control Unit) ECU, a lambda sensor fault simulation device is set between lambda sensor and ECU, the signal of lambda sensor output is not directly imported ECU, and directly import lambda sensor fault simulation device, lambda sensor fault simulation device is sampled to the signal of lambda sensor output by A/D converter, the main control unit of lambda sensor fault simulation device is superimposed voltage shifted signal or operating lag signal or while superimposed voltage shifted signal and operating lag signal on the basis of this signal, make it to produce the analogue signal of lambda sensor fault, utilize the signal after D/A converter is handled this to export to electronic fuel injection engine ECU then.
2, zirconia-type oxygen sensor for electronic injection engine fault generating method as claimed in claim 1, it is characterized in that: there are two kinds of operating modes in described method, unit independent operating and on-line execute, the unit operation pattern is meant that independent use lambda sensor simulator carries out the lambda sensor fault simulation, by parameter module is set and sets relevant parameters, show normal signal and fault simulation signal by LCD MODULE; The on-line execute pattern is meant lambda sensor fault simulation device is linked to each other the back by upper computer software realization lambda sensor fault simulation with master system, set the parameter of fault simulation by master system software, show normal signal and fault simulation signal by master system software, and preserve normal signal and trouble signal simultaneously.
3, zirconia-type oxygen sensor for electronic injection engine fault generating method as claimed in claim 1 is characterized in that: described lambda sensor fault simulation device can make that lambda sensor produces skew on the upper voltage limit, upper voltage limit postpone skew on skew, the lower voltage limit, lower voltage limit skew down, time response down, the rate of rise of rising edge changes and the descending slope of trailing edge changes independent failure simulation model and upper voltage limit skew, lower voltage limit skew, postpone time response and slope changes the arbitrary proportion mixed fault simulation model of four kinds of fault modes.
4, as claim 1 or 4 described oxygen sensor of electric control gasoline injection engine fault simulation devices, it is characterized in that: described lambda sensor fault simulation device main control singlechip, the D/A output module, LCD MODULE, module is set parameter and master system constitutes, wherein the A/D of main control singlechip sampling input end links to each other with the output signal of lambda sensor, LCD MODULE links to each other with the I/O mouth of main control singlechip, parameter is provided with module and links to each other with the I/O mouth of main control singlechip, master system links to each other by the RS232 serial ports with main control singlechip, and the D/A output module links to each other with common I/O mouth with the SPI mouth of main control singlechip.Master control system is by sampling to oxygen sensor signal, by to the skew of this signal superimposed voltage postpone time response or simultaneously the superimposed voltage shifted signal and time response delay signal realize the simulation of trouble signal, the signal after the processing is exported to ECU by the D/A modular converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910063796 CN101644199B (en) | 2009-09-02 | 2009-09-02 | Method and device for simulating faults of zirconia-type oxygen sensor for electronic injection engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910063796 CN101644199B (en) | 2009-09-02 | 2009-09-02 | Method and device for simulating faults of zirconia-type oxygen sensor for electronic injection engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101644199A true CN101644199A (en) | 2010-02-10 |
| CN101644199B CN101644199B (en) | 2013-01-23 |
Family
ID=41656223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910063796 Active CN101644199B (en) | 2009-09-02 | 2009-09-02 | Method and device for simulating faults of zirconia-type oxygen sensor for electronic injection engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101644199B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102411311A (en) * | 2011-08-23 | 2012-04-11 | 意昂神州（北京）科技有限公司 | Oxygen sensor failure simulator and oxygen sensor failure simulation method |
| CN103711601A (en) * | 2012-07-05 | 2014-04-09 | 罗伯特·博世有限公司 | Method and control unit for detecting a voltage offset of a voltage-lambda characteristic curve |
| CN104977920A (en) * | 2014-04-04 | 2015-10-14 | 联创汽车电子有限公司 | Universal exhaust gas oxygen sensor load simulator |
| CN109932604A (en) * | 2019-04-03 | 2019-06-25 | 武汉菱电汽车电控系统股份有限公司 | Wide oxygen failure simulation method, apparatus and system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2765246Y (en) * | 2005-01-19 | 2006-03-15 | 万谦 | Interface unit for automobile fault detection signal and computer |
| KR100716314B1 (en) * | 2005-08-30 | 2007-05-11 | 현대자동차주식회사 | A method for detecting LPG switch line disconnection |
| CN100462928C (en) * | 2007-01-26 | 2009-02-18 | 武汉理工大学 | Fault generating method and device for oxygen sensor of electric control gasoline injection engine |
| CN201269862Y (en) * | 2008-09-24 | 2009-07-08 | 比亚迪股份有限公司 | Failure monitoring apparatus for oxygen sensor |
-
2009
- 2009-09-02 CN CN 200910063796 patent/CN101644199B/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102411311A (en) * | 2011-08-23 | 2012-04-11 | 意昂神州（北京）科技有限公司 | Oxygen sensor failure simulator and oxygen sensor failure simulation method |
| CN102411311B (en) * | 2011-08-23 | 2014-10-08 | 意昂神州（北京）科技有限公司 | Oxygen sensor failure simulator and oxygen sensor failure simulation method |
| CN103711601A (en) * | 2012-07-05 | 2014-04-09 | 罗伯特·博世有限公司 | Method and control unit for detecting a voltage offset of a voltage-lambda characteristic curve |
| CN103711601B (en) * | 2012-07-05 | 2017-05-17 | 罗伯特·博世有限公司 | Method and control unit for detecting a voltage offset of a voltage-lambda characteristic curve |
| CN104977920A (en) * | 2014-04-04 | 2015-10-14 | 联创汽车电子有限公司 | Universal exhaust gas oxygen sensor load simulator |
| CN109932604A (en) * | 2019-04-03 | 2019-06-25 | 武汉菱电汽车电控系统股份有限公司 | Wide oxygen failure simulation method, apparatus and system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101644199B (en) | 2013-01-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101644199B (en) | Method and device for simulating faults of zirconia-type oxygen sensor for electronic injection engine | |
| CN101807361A (en) | Diesel engine electronic control teaching simulated experiment method and device | |
| CN202929942U (en) | Semi-physical simulation experiment table of oil injection and igniting system of automotive engine | |
| CN109546185A (en) | A kind of control system of methanol recapitalization fuel cell | |
| CN107942998B (en) | Urea consumption deviation fault simulation device and simulation method | |
| CN201955415U (en) | Portable engineering truck steering gear box assembly instrument and wire harness integrative inspection platform | |
| CN208109414U (en) | A kind of efp signal simulator | |
| CN100462928C (en) | Fault generating method and device for oxygen sensor of electric control gasoline injection engine | |
| CN102081150B (en) | 'Virtual complex impedance method'-based power frequency line parameter tester calibration device and method | |
| CN201071758Y (en) | Intelligent control system of double-fuel gas engine for automobile | |
| CN216526886U (en) | Test signal simulation box and test system for engine tail gas purification system controller | |
| CN201047836Y (en) | Engine tail gas catalytic converter liveness evaluation system | |
| CN205135820U (en) | Ageing simulation of car oxygen sensor and air -fuel ratio governing system based on engine control ware | |
| CN101825028A (en) | Automobile engine and electric control fuel economizer thereof | |
| CN101260838A (en) | Broad domain oxygen sensor controller of vehicular gaseous propellant engine | |
| CN107416773A (en) | Hybrid ozone generating-device | |
| CN202995352U (en) | Engine tester based on 32-bit ARM microcontroller | |
| CN204613739U (en) | A kind of diesel motor aftertreatment SCR test macro | |
| CN218213920U (en) | Wide oxygen signal generating device | |
| CN204457960U (en) | A kind of automobile exhaust gas purifying installation | |
| CN206458543U (en) | A kind of Lambda air-fuel ratios instrument | |
| CN204121980U (en) | A kind of denitrating flue gas experiment porch of honeycomb SCR denitration | |
| CN206593706U (en) | A kind of DN transmitters based on CNG filling machine Coriolis mass flowmeters | |
| CN104965143A (en) | Combustion gas ECU test system | |
| CN113008566A (en) | Portable vehicle oxygen sensor performance detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: WUHUAN UNIVERSITY OF TECHNOLOGY ENTERPRISE GROUP C Free format text: FORMER OWNER: WUHAN UNIVERSITY OF TECHNOLOGY Effective date: 20140711 Owner name: WUHAN NEW ENERGY AUTOMOBILE INDUSTRIAL TECHNOLOGY Free format text: FORMER OWNER: WUHUAN UNIVERSITY OF TECHNOLOGY ENTERPRISE GROUP CO., LTD. Effective date: 20140711 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 430070 WUHAN, HUBEI PROVINCE TO: 430056 WUHAN, HUBEI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140711 Address after: 430070 Hubei Province, Wuhan city Hongshan District Luoshi Road No. 122 Patentee after: Wuhan Institute of Technology Industry Group Co.,Ltd. Address before: 430070 Hubei city of Wuhan province Wuchang Luoshi Road No. 122 Patentee before: Wuhan University of Technology Effective date of registration: 20140711 Address after: 3 building 430056, building 2, hi tech Industrial Park, Wuhan economic and Technological Development Zone, Hubei Patentee after: Wuhan new energy automobile industry technology Research Institute Address before: 430070 Hubei Province, Wuhan city Hongshan District Luoshi Road No. 122 Patentee before: Wuhan Institute of Technology Industry Group Co.,Ltd. |
|
| CI03 | Correction of invention patent |
Correction item: Patentee|Address Correct: WUHAN Research Institute OF NEW ENERGY AUTOMOTIVE TECHNOLOGIES|430056 3rd Floor, Building 2, High-tech Industrial Park, Wuhan Economic and Technological Development Zone, Hubei Province False: Wuhan new energy automobile industry technology research institute|430056 3rd Floor, Building 2, High-tech Industrial Park, Wuhan Economic and Technological Development Zone, Hubei Province Number: 31 Volume: 30 |
|
| CI03 | Correction of invention patent | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 430056 3rd Floor, Building 2, High-tech Industrial Park, Wuhan Economic and Technological Development Zone, Hubei Province Patentee after: Wuhan Jingkai Kechuang Operation Co.,Ltd. Address before: 430056 3rd Floor, Building 2, High-tech Industrial Park, Wuhan Economic and Technological Development Zone, Hubei Province Patentee before: WUHAN Research Institute OF NEW ENERGY AUTOMOTIVE TECHNOLOGIES |
|
| CP01 | Change in the name or title of a patent holder | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231107 Address after: No. 122, Lo lion Road, Hongshan District, Wuhan, Hubei Patentee after: Wuhan University of Technology Education Development Foundation Address before: No. 122, Lo lion Road, Hongshan District, Wuhan, Hubei Patentee before: Wuhan Institute of Technology Industry Group Co.,Ltd. Effective date of registration: 20231107 Address after: No. 122, Lo lion Road, Hongshan District, Wuhan, Hubei Patentee after: Wuhan Institute of Technology Industry Group Co.,Ltd. Address before: 430056 3rd Floor, Building 2, High-tech Industrial Park, Wuhan Economic and Technological Development Zone, Hubei Province Patentee before: Wuhan Jingkai Kechuang Operation Co.,Ltd. |