| Patents for F01N 11 - Monitoring or diagnostic devices for exhaust-gas treatment apparatus (7,022) |
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| 02/10/2000 | DE19835748A1 Verfahren zur simulierten Bildung eines die momentane Katalysatortemperatur repräsentierenden Signals A method for forming a simulated the current catalyst temperature signal representing |
| 02/09/2000 | EP0978640A2 Process for simulated development of a signal representing the momentary temperature of a catalyst |
| 02/08/2000 | US6023401 Abnormality detecting device for exhaust secondary air supplying system |
| 02/02/2000 | EP0975417A1 REDUCING NOx EMISSIONS FROM AN ENGINE BY TEMPERATURE-CONTROLLED UREA INJECTION |
| 02/01/2000 | US6018944 System and method for monitoring a catalytic converter using adaptable indicator threshold |
| 01/27/2000 | WO2000004282A1 Method of judging deterioration of emission gas control catalyst device |
| 01/27/2000 | DE19833450A1 Control system for internal combustion engine |
| 01/26/2000 | EP0974002A1 PROCESS AND DEVICE FOR MONITORING A NOx ACCUMULATOR |
| 01/19/2000 | EP0972914A2 Exhaust gas purification system of internal combustion engine |
| 01/11/2000 | US6012282 Method for controlling engine exhaust gas system |
| 01/06/2000 | WO2000000728A1 Method for testing the dynamic behavior of a measure sensor in the exhaust system of an internal combustion engine |
| 01/05/2000 | EP0969194A2 System and method for diagnosing deterioration of NOx-occluded catalyst |
| 01/05/2000 | DE19828929A1 Verfahren zur Überprüfung des Dynamikverhaltens eines Meßaufnehmers im Abgastrakt einer Brennkraftmaschine Procedures to verify the dynamic behavior of a measuring transducer in the exhaust system of an internal combustion engine |
| 01/05/2000 | DE19828928A1 Controlling exhaust gas purification device of an internal combustion engine |
| 01/04/2000 | US6009742 Multi-channel pellistor type emission sensor |
| 12/30/1999 | DE19928968A1 System for controlling the exhaust gas emissions from an I.C. engine |
| 12/29/1999 | WO1999067511A1 Exhaust emission control device of internal combustion engine |
| 12/29/1999 | EP0967378A2 Sensor calibration for catalyst deterioration detection |
| 12/29/1999 | EP0800618B1 Method of monitoring a secondary air pump |
| 12/29/1999 | EP0800617B1 Process for testing the operation of a catalytic converter with an oxygen sensor |
| 12/28/1999 | US6009370 Control unit for vehicle and total control system therefor |
| 12/23/1999 | DE19827420A1 Controller managing fuel supply for exhaust system NOx storage unit regeneration, based on individual engine cycles |
| 12/21/1999 | US6006153 Discrete processing catalyst monitoring |
| 12/21/1999 | US6003309 Diagnostic apparatus for exhaust gas clarification apparatus for internal combustion engine |
| 12/21/1999 | US6003308 Air-fuel ratio control system for internal combustion engines |
| 12/21/1999 | US6003307 OBD calorimetric sensor system with offset error correction |
| 12/15/1999 | EP0678154B2 Exhaust filter backpressure indicator |
| 12/14/1999 | US6000218 System for monitoring the functioning ability of catalytic converters and/or lambda sensors |
| 12/07/1999 | US5998210 Method and apparatus for aging a catalyst |
| 12/07/1999 | US5996337 Dynamic calorimetric sensor system |
| 12/02/1999 | WO1999061770A1 METHOD FOR CHECKING THE EFFICIENCY OF AN NOx ACCUMULATION CATALYST |
| 12/02/1999 | DE19823921A1 Verfahren zur Überprüfung des Wirkungsgrades eines NOx-Speicherkatalysators Method for checking the efficiency of a NOx storage catalytic converter |
| 12/01/1999 | EP0961013A2 Catalyst deterioration monitoring |
| 11/30/1999 | US5992142 No exhaust emission control method and arrangement |
| 11/25/1999 | WO1999047795A3 Method and device to monitor the functioning of a catalyst in an internal combustion engine |
| 11/23/1999 | US5987977 Device for determining an abnormal degree of deterioration of a catalyst |
| 11/23/1999 | US5987883 Method of diagnosing a catalytic converter |
| 11/18/1999 | WO1999058826A1 On-board exhaust gas purifying system with dynamic calorimetric sensor system |
| 11/16/1999 | US5983629 Device for determining deterioration of a catalyst for an engine |
| 11/09/1999 | US5979161 Device for determining the abnormal degree of deterioration of a catalyst |
| 11/09/1999 | US5979160 System for detecting deterioration of exhaust gas purifying catalyst for automobile engine |
| 11/03/1999 | EP0883737A4 Method for monitoring catalytic converter performance |
| 11/02/1999 | US5976475 Reducing NOx emissions from an engine by temperature-controlled urea injection for selective catalytic reduction |
| 11/02/1999 | US5974790 Catalytic converter decontamination method |
| 11/02/1999 | US5974787 Method for testing the functional capability of a catalytic converter with an oxygen sensor |
| 11/02/1999 | US5974786 Adaptive time window to synchronize pre- and post-catalyst oxygen sensor switch counters |
| 10/26/1999 | US5970707 Exhaust gas purification device for an internal combustion engine |
| 10/21/1999 | DE19816175A1 Verfahren zur Überprüfung der Funktionstüchtigkeit eines Stickoxid-Speicherkatalysators A method for checking the function of a nitrogen oxide storage catalytic converter |
| 10/20/1999 | EP0950801A1 Process for detecting the deterioration of a nitrogen oxide adsorbing catalyst |
| 10/19/1999 | US5966930 Catalyst deterioration-determining system for internal combustion engines |
| 10/12/1999 | US5964089 For purifying exhaust gas of an internal combustion engine |
| 10/06/1999 | EP0947683A2 Method and apparatus for catalyst temperature control |
| 09/29/1999 | EP0937877B1 Monitoring of leakage in an exhaust gas treatment device of a combustion engine |
| 09/29/1999 | EP0937875B1 Monitoring of leakage in an exhaust gas treatment device of a combustion engine |
| 09/28/1999 | US5956945 Apparatus and method for diagnosis of catalyst performance |
| 09/28/1999 | US5956941 Method and system for estimating a midbed temperature of a catalytic converter |
| 09/28/1999 | US5956940 Method and apparatus for monitoring deterioration of internal combustion engine exhaust gas purifier |
| 09/23/1999 | WO1999047795A2 Method and device to monitor the functioning of a catalyst in an internal combustion engine |
| 09/23/1999 | DE19811574A1 Vehicle internal combustion (IC) engine catalyst functionability monitoring method |
| 09/22/1999 | EP0943786A2 Method to control the exhaust gas treating of a direct injection Otto engine and of a lean-burn engine |
| 09/21/1999 | US5955665 Process for monitoring the operativeness of a catalytic converter |
| 09/21/1999 | US5953910 Engine air-fuel ratio converter with means for determining the deterioration of the catalytic converter |
| 09/21/1999 | US5953907 Method of controlling an engine exhaust gas system and method of detecting deterioration of catalyst/adsorbing means |
| 09/21/1999 | US5953905 System and method for monitoring a catalytic converter |
| 09/16/1999 | DE19811257A1 Verfahren zur Steuerung der Abgasnachbehandlung eines DI-Otto- und Magermotors Method for controlling the exhaust gas treatment of a DI gasoline and lean-burn engine |
| 09/14/1999 | US5952555 Measuring exhaust gases |
| 09/14/1999 | US5950422 Method and device for converting a pollutant in an exhaust gas in a catalytic converter |
| 09/09/1999 | DE19859462A1 Catalytic converter decontamination method |
| 09/08/1999 | EP0636770B1 Exhaust gas cleaning device for an internal combustion engine |
| 09/07/1999 | US5948974 Device for determining deterioration of a catalytic converter for an engine |
| 09/07/1999 | US5948966 Gas sensor, method of measuring gas component by utilizing gas sensor, and method of diagnosing malfunction of exhaust gas purifying apparatus |
| 09/07/1999 | US5948683 Catalyst for selective oxidation of unsaturated hydrocarbons and methods of making and using the same |
| 09/07/1999 | US5948371 Cleaning exhaust from combustor |
| 08/31/1999 | US5945597 Method for monitoring catalytic converter efficiency |
| 08/26/1999 | WO1999025965A9 VEHICULAR ON-BOARD MONITORING SYSTEM SENSING COMBINED HC/NOx EMISSIONS FOR CATALYTIC CONVERTER EVALUATION |
| 08/25/1999 | EP0937877A1 Monitoring of leakage in an exhaust gas treatment device of a combustion engine |
| 08/25/1999 | EP0937875A1 Monitoring of leakage in an exhaust gas treatment device of a combustion engine |
| 08/24/1999 | US5941928 System and method for measuring hydrocarbon conversion efficiency of a catalytic converter |
| 08/24/1999 | US5941918 Automotive on-board monitoring system for catalytic converter evaluation |
| 08/19/1999 | WO1999023372A3 Apparatus and method for diagnosis of catalyst performance |
| 08/18/1999 | EP0936349A2 Method and system for diagnosing deterioration of NOx catalyst |
| 08/17/1999 | US5938715 Method for monitoring the conversion capacity of a catalytic converter |
| 08/17/1999 | US5937638 Method of judging deterioration of catalytic converter for purifying exhaust gas |
| 08/12/1999 | WO1999040298A1 Obd calorimetric sensor system with offset error correction |
| 08/10/1999 | US5936314 Failure detecting device for a power supply changeover switch |
| 08/05/1999 | DE19803828A1 Testing an exhaust gas catalytic converter in an internal combustion engine, for its ability to convert contaminants |
| 08/03/1999 | US5930993 Method for monitoring the exhaust gas conversion rate of an exhaust catalyst for an internal combustion engine |
| 07/28/1999 | EP0931914A1 Process for monitoring the operation of a catalytic converter of a motor vehicle |
| 07/28/1999 | EP0930930A1 PROCESS FOR REMOVING NOx FROM EXHAUST FUMES |
| 07/27/1999 | US5929327 Catalytic converter |
| 07/27/1999 | US5929320 Apparatus and method for judging deterioration of catalysts device and oxygen content sensing device |
| 07/27/1999 | US5927068 Method and apparatus for monitoring the functioning of a catalytic converter |
| 07/22/1999 | DE19801629A1 Catalyst diagnostics process for testing conversion capacity of IC engine exhaust gas catalyst |
| 07/22/1999 | DE19801626A1 Catalyst diagnostics process for testing nitrogen oxide(s) storage capacity of i. c. engine exhaust gas catalyst |
| 07/15/1999 | WO1999035388A1 Monitoring of leaks in an exhaust treatment system of an internal combustion engine |
| 07/15/1999 | WO1999035387A1 Monitoring of leaks in an exhaust treatment system of an internal combustion engine |
| 07/14/1999 | EP0928890A2 Method for operating an NOx storage catalytic converter |
| 07/14/1999 | EP0928366A1 Secondary-air system for an internal combustion engine |
| 07/13/1999 | US5922287 Combustible gas sensor and method for detecting deterioration of catalyst |
| 07/13/1999 | US5921078 Diagnostic equipment for an exhaust gas cleaning apparatus |