| Patents for F01N 11 - Monitoring or diagnostic devices for exhaust-gas treatment apparatus (7,022) |
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| 07/21/1998 | US5783990 Method of detecting and documenting exhaust-gas relevant malfunctions of a vehicle having an internal combustion engine utilizing onboard means |
| 07/21/1998 | US5782086 Failure detection system of exhaust secondary air supply system of internal combustion engine |
| 07/15/1998 | EP0852662A2 Process and device for reacting a pollutant in an exhaust gas on a catalyst |
| 06/30/1998 | US5772965 Method and system for detecting deterioration of exhaust gas control catalyst |
| 06/30/1998 | US5771685 In an exhaust passage of an internal combustion engine |
| 06/24/1998 | EP0849588A2 Automotive hydrocarbon sensor |
| 06/24/1998 | EP0849587A2 Automotive hydrocarbon sensor system |
| 06/24/1998 | EP0849441A1 Control strategy for NOx-accumulator |
| 06/18/1998 | WO1998026164A1 Method for monitoring catalytic converter performance |
| 06/17/1998 | EP0848250A2 Gas sensor and method for diagnosing malfunction of exhaust gas purifying apparatus |
| 06/16/1998 | US5767386 Exhaust gas sensor and circuit configuration for the exhaust gas sensor |
| 06/16/1998 | US5765370 Device for determining the abnormal degree of deterioration of a catalyst |
| 06/16/1998 | US5765369 Exhaust gas purifying apparatus |
| 06/09/1998 | US5763771 In a motor vehicle |
| 06/09/1998 | US5761901 Method of checking the efficiency of a catalytic convertor in an internal combustion engine |
| 06/03/1998 | EP0769096B1 System for monitoring the performance of automotive catalysts |
| 06/02/1998 | US5758494 System and method for adaptive switch determination of exhaust gas sensors |
| 06/02/1998 | US5758492 Failure detection system of electrically heated catalytic converter of internal combustion engine |
| 06/02/1998 | US5758491 Diagnosing system and method of catalytic converter for controlling exhaust gas of internal combustion engine |
| 05/27/1998 | EP0844379A2 Method of judging deterioration of catalytic converter for purifying exhaust gas |
| 05/27/1998 | EP0844374A2 System for diagnosing deterioration of catalyst |
| 05/19/1998 | US5752382 Device for determining an abnormal degree of deterioration of a catalyst |
| 05/12/1998 | US5751602 Method of monitoring the operation of a catalytic converter |
| 05/12/1998 | US5749222 Catalyst soundness assessment device |
| 05/12/1998 | CA2153606C Catalyst deterioration-detecting device for internal combustion engine |
| 05/05/1998 | US5746053 Apparatus for controlling power supplied to an electrically heated catalyst attached to an exhaust gas passage of an internal combustion engine |
| 05/05/1998 | US5746049 Method and apparatus for estimating and controlling no x trap temperature |
| 04/28/1998 | US5743086 Device for judging deterioration of catalyst of engine |
| 04/28/1998 | US5743085 Diagnostic equipment for an exhaust gas cleaning apparatus |
| 04/28/1998 | US5743084 Method for monitoring the performance of a nox trap |
| 04/28/1998 | US5743082 Apparatus for detecting reduction of purifying capacity of catalyst for purifying exhaust gas from internal combustion engine and method thereof |
| 04/22/1998 | EP0837234A1 Method and system for estimating a midbed temperature of a catalytic converter |
| 04/21/1998 | US5740676 Diagnostic apparatus for exhaust gas clarification apparatus for internal combustion engine |
| 04/15/1998 | EP0836075A1 Method for processing a plurality of signals |
| 04/14/1998 | US5737917 Device for judging deterioration of catalyst of engine |
| 04/14/1998 | US5737916 Catalyst deterioration detection device for internal combustion engine |
| 04/07/1998 | US5735121 Air pump abnormality-detecting system for internal combustion engines |
| 04/07/1998 | US5735120 Device for judging the deterioration of a catalyst of an engine |
| 04/07/1998 | US5735119 Exhaust purification device of an engine |
| 04/02/1998 | WO1998013589A1 Secondary-air system for an internal combustion engine |
| 04/02/1998 | WO1998013128A1 PROCESS FOR REMOVING NOx FROM EXHAUST FUMES |
| 04/02/1998 | DE19741194A1 Fault detection apparatus for changeover switch |
| 04/02/1998 | DE19640161A1 NOx-Abgasreinigungsverfahren NOx emission control method |
| 03/31/1998 | US5732553 Device for determining deterioration of a catalytic converter for an engine |
| 03/31/1998 | US5732552 Apparatus for deterioration diagnosis of an exhaust purifying catalyst |
| 03/31/1998 | US5732551 Method for monitoring the performance of a catalytic converter using mass transfer coefficients |
| 03/31/1998 | US5732549 In an exhaust system of a motor vehicle |
| 03/25/1998 | EP0830498A1 Arrangement and method for determining the oxygen buffer capacity in a catalytic converter |
| 03/24/1998 | US5729971 Which purifies exhaust of an engine |
| 03/17/1998 | US5727383 Catalyst deterioration detecting apparatus and exhaust emission control device failure detecting apparatus |
| 03/12/1998 | WO1998010272A1 MONITORING SENSOR FOR NOx CATALYTIC CONVERTER |
| 03/12/1998 | DE19635977A1 Sensor zur Überwachung eines NOx-Katalysators Sensor for monitoring an NOx catalyst |
| 03/10/1998 | US5724809 Device for determining deterioration of a catalytic converter for an engine |
| 03/10/1998 | US5724808 Air-fuel ratio control system for internal combustion engines |
| 03/03/1998 | US5722238 Device for evaluating catalyst performance deterioration |
| 02/11/1998 | EP0823546A1 A device for determining deterioration of a catalyst for an engine |
| 02/10/1998 | US5715679 Exhaust purification device of an engine |
| 02/10/1998 | US5715678 System for monitoring the efficiency of a catalyser, particularly for motor vehicles |
| 02/10/1998 | US5715676 Method and apparatus for monitoring the starting behavior of a catalytic conversion system in an automotive vehicle |
| 02/05/1998 | WO1998005005A1 Process for determining and/or paying a compensation for pollutants in exhaust fumes and motor vehicle with a set working according to this process |
| 02/03/1998 | US5713199 Device for detecting deterioration of NOx absorbent |
| 02/03/1998 | US5713198 Exhaust gas-purifying device for internal combustion engines |
| 02/03/1998 | US5713197 Catalyst deterioration-detecting system for internal combustion engines |
| 01/29/1998 | DE19732167A1 Exhaust gas cleaning system for internal combustion engines including catalyser |
| 01/29/1998 | DE19630092A1 Verfahren zum Erfassen und/oder zur Zahlung eines Entgelts für Abgas-Schadstoffe und Kraftfahrzeug mit einem nach diesem Verfahren arbeitenden Abgas-Schadstoff-Set A method for detecting and / or pay a fee for exhaust pollutants and motor vehicle with an operating according to this method, exhaust emission Set |
| 01/20/1998 | US5709080 Leak detection method and apparatus for an exhaust purification system |
| 01/13/1998 | US5706653 Secondary air supplying apparatus for internal combustion engine |
| 01/13/1998 | US5706652 Catalytic converter monitor method and apparatus |
| 01/08/1998 | DE19729007A1 Diagnosing functioning states of catalytic converter |
| 12/29/1997 | EP0814249A2 Method for controlling engine exhaust gas system |
| 12/29/1997 | EP0814248A2 Method of controlling an engine exhaust gas system and method of detecting deterioration of catalyst/adsorbing means |
| 12/17/1997 | EP0599875B1 An exhaust gas oxygen sensor |
| 12/10/1997 | EP0655104B1 Process for monitoring the operation of a catalytic converter |
| 12/02/1997 | US5693877 Comparing the difference of determined oxygen concentration at upstream and downstream position |
| 11/05/1997 | EP0804679A1 Catalyst |
| 11/04/1997 | US5684248 Device for determining the degree of deterioration of a catalyst |
| 10/30/1997 | DE19711295A1 System for determining deterioration in exhaust gas catalytic converter |
| 10/28/1997 | US5680756 Fuel-vapor treatment method and apparatus for internal combustion engine |
| 10/21/1997 | US5678402 Air-fuel ratio control system for internal combustion engines and exhaust system temperature-estimating device applicable thereto |
| 10/21/1997 | CA2050694C Method and appartus for controlling air-fuel ratio of gas engine |
| 10/15/1997 | EP0801215A1 An apparatus for detecting deterioration of a three-way catalytic converter for an engine |
| 10/15/1997 | EP0800618A2 Method of monitoring a secondary air pump |
| 10/15/1997 | EP0800617A1 Process for testing the operation of a catalytic converter with an oxygen sensor |
| 10/14/1997 | US5675967 Method and arrangement for evaluating the operability of a catalytic converter |
| 10/09/1997 | DE19629163C1 Diesel engine operation to suppress nitrogen oxides emission |
| 10/08/1997 | EP0799984A2 Catalytic converter monitor |
| 10/07/1997 | US5673555 Method for checking the efficiency of a catalytic converter |
| 09/24/1997 | EP0796985A1 An apparatus for detecting the deterioration of a three-way catalytic converter for an internal combustion engine |
| 09/24/1997 | EP0796390A1 Process and device for monitoring the operation of a catalyst |
| 09/23/1997 | CA2138563C Catalyst deterioration-determining device of an internal combustion engine |
| 09/18/1997 | DE19609922A1 Additional air supply monitoring for exhaust gas of internal combustion engine |
| 09/10/1997 | EP0793770A1 Device for monitoring the operatability of catalytic converters and/or lambda probes |
| 09/10/1997 | EP0736136B1 Method for testing the convertability of a catalytic converter |
| 09/04/1997 | DE19708225A1 Function diagnostic system for exhaust fume cleaning device of internal combustion engine |
| 09/04/1997 | DE19607461A1 Detecting and documenting malfunctions related to exhaust gas of vehicle fitted with IC engine |
| 09/03/1997 | EP0793009A2 Air-fuel ratio control apparatus for internal combustion engine |
| 09/02/1997 | US5661974 Control system with function of protecting catalytic converter for internal combustion engines for vehicles |
| 08/28/1997 | DE19623335C1 Capability check method on catalytic converter in internal combustion engine exhaust |
| 08/28/1997 | DE19606652A1 Air/fuel ratio setting method for IC engine with exhaust catalyser |
| 08/12/1997 | US5655363 Air-fuel ratio control system for internal combustion engines |