| Patents for F01N 11 - Monitoring or diagnostic devices for exhaust-gas treatment apparatus (7,022) |
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| 08/05/1997 | US5653102 Air/fuel control system with catalytic converter monitoring for a variable displacement engine |
| 07/30/1997 | EP0786656A1 Durability test method for exhaust gas purification device |
| 07/30/1997 | EP0786586A2 Device for evaluating catalyst performance deterioration |
| 07/24/1997 | WO1997016631A3 Process for testing the operation of a catalytic converter with an oxygen sensor |
| 07/24/1997 | DE19701355A1 Catalytic converter for exhaust gases in vehicle IC engine |
| 07/22/1997 | US5649420 System for diagnosing deterioration of catalyst |
| 07/15/1997 | US5647669 Method for generating a simulated signal relating to a temperature in the exhaust system of an internal combustion engine |
| 07/15/1997 | US5647205 Process for checking the conversion capability of a catalyst |
| 07/15/1997 | US5647204 Method for monitoring the effectiveness of a heated catalytic converter for treating the exhaust gases of an internal combustion engine |
| 07/10/1997 | DE19654693A1 Fault detector for vehicle catalytic converters |
| 07/08/1997 | US5644912 System for diagnosing deterioration of catalyst in exhaust system of internal combustion engine |
| 06/26/1997 | DE19645202A1 Monitoring conversion rate of exhaust gas catalytic converter for IC engine with electronic controller |
| 06/25/1997 | EP0780551A1 Method for detection of performance reduction of exhaust gas purification catalyst |
| 06/24/1997 | US5640847 Catalyst deterioration diagnosis system for internal combustion engine |
| 06/24/1997 | US5640846 Dual-sensor type air-fuel ratio control system for internal combustion engine and catalytic converter diagnosis apparatus for the same |
| 06/19/1997 | WO1997015468A3 Method and device for detecting and documenting damage to catalytic converters |
| 06/19/1997 | DE19651559A1 Adaptive control for automobile IC engine relative to emissions control system output variations |
| 06/18/1997 | EP0779416A1 Method for detection of performance reduction of exhaust gas purification catalyst |
| 06/12/1997 | DE4498478C2 Temperature estimating method for catalyst of vehicle |
| 06/12/1997 | DE19545693A1 Efficiency verifying method for catalyst in IC engine |
| 06/11/1997 | EP0778401A2 Method for monitoring the operation of a hydrocarbon adsorber |
| 06/11/1997 | EP0778400A1 Apparatus for controlling power supplied to an electrically heated catalyst attached to an exhaust gas passage of an internal combustion engine |
| 06/10/1997 | US5638272 Control unit for vehicle and total control system therefor |
| 06/10/1997 | US5636514 Catalyst deterioration-determining system for internal combustion engines |
| 06/05/1997 | WO1997015752A3 Method of monitoring a secondary air pump |
| 06/03/1997 | US5634331 Exhaust gas-purifying device for internal combustion engines |
| 06/03/1997 | US5634330 Process for checking a burner system for heating a catalytic converter |
| 05/28/1997 | EP0689641B1 Process and device for monitoring the operation of a catalytic converter |
| 05/20/1997 | US5630315 Catalyst diagnostic system and method |
| 05/15/1997 | WO1997017534A1 Catalyst |
| 05/15/1997 | DE19646008A1 Catalytic converter for IC engine |
| 05/15/1997 | DE19542038A1 Katalysator Catalyst |
| 05/14/1997 | EP0773355A1 Monitoring system for the exhaust gas purifier of an internal combustion engine |
| 05/09/1997 | WO1997016631A2 Process for testing the operation of a catalytic converter with an oxygen sensor |
| 05/09/1997 | WO1997012129A3 Process and device for reacting a pollutant in an exhaust gas on a catalyst |
| 05/07/1997 | DE19540673A1 Verfahren zur Überprüfung der Funktionsfähigkeit eines Katalysators mit einem Sauerstoffsensor Method for checking the operation of a catalyst with an oxygen sensor |
| 05/06/1997 | US5627757 System for monitoring the efficiency of a catalyst, in particular for motor vehicles |
| 05/06/1997 | US5626014 Catalyst monitor based on a thermal power model |
| 05/02/1997 | EP0770768A1 Device for evaluating catalyst performance deterioration |
| 05/02/1997 | EP0770767A1 Catalyst deterioration detection device for internal combustion engine |
| 05/01/1997 | WO1997015752A2 Method of monitoring a secondary air pump |
| 05/01/1997 | WO1997015751A1 Testing of catalyst in the exhaust system of an internal combustion engine |
| 05/01/1997 | WO1997015468A2 Method and device for detecting and documenting damage to catalytic converters |
| 04/30/1997 | DE19643674A1 Engine exhaust gas catalyser temp. detector |
| 04/30/1997 | DE19539938A1 Verfahren zur Überprüfung einer Sekundärluftpumpe Method for checking a secondary air pump |
| 04/29/1997 | US5625750 Catalyst monitor with direct prediction of hydrocarbon conversion efficiency by dynamic neural networks |
| 04/23/1997 | EP0769096A1 System for monitoring the performance of automotive catalysts |
| 04/22/1997 | US5622048 Catalyst deterioration recovery device |
| 04/22/1997 | US5622047 Method and apparatus for detecting saturation gas amount absorbed by catalytic converter |
| 04/17/1997 | WO1997013964A1 Process and device for monitoring the operation of a catalyst |
| 04/17/1997 | DE19537788A1 Verfahren und Vorrichtung zur Überwachung der Funktionsweise eines Katalysators Method and apparatus for monitoring the functioning of a catalyst |
| 04/10/1997 | WO1997013058A1 APPARATUS AND METHOD FOR DETECTING DETERIORATION OF NOx CATALYST IN DIESEL ENGINE |
| 04/08/1997 | US5617722 Exhaust control device of internal combustion engine |
| 04/03/1997 | WO1997012129A2 Process and device for reacting a pollutant in an exhaust gas on a catalyst |
| 04/01/1997 | US5615552 Secondary air pump control system for internal combustion engines |
| 03/11/1997 | US5610844 Method of monitoring the operation of a catalytic converter |
| 03/11/1997 | US5609023 Fuel supply control system for internal combustion engines |
| 03/05/1997 | EP0760055A1 Apparatus and method for judging deterioration of catalysts device and oxygen content sensing device |
| 03/04/1997 | US5606855 Apparatus and method for estimating the temperature of an automotive catalytic converter |
| 02/11/1997 | US5602737 Method of and apparatus for monitoring operation of a catalyst |
| 02/11/1997 | US5600947 Method and system for estimating and controlling electrically heated catalyst temperature |
| 01/29/1997 | EP0756073A2 A device for determining deterioration of a catalytic converter for an engine |
| 01/29/1997 | EP0756072A2 A device for determining an abnormal degree of deterioration of a catalyst |
| 01/29/1997 | EP0756071A2 A device for determining an abnormal degree of deterioration of a catalyst |
| 01/21/1997 | US5595061 Catalyst deterioration-detecting device for internal combustion engine |
| 01/14/1997 | US5592815 Process for monitoring the conversion rate of an exhaust catalyst |
| 01/07/1997 | US5591905 Deterioration detecting apparatus for catalytic converter |
| 01/07/1997 | US5590521 Method and device for forming a simulated signal of the temperature of the exhaust gas, exhaust gas sensor or catalytic converter |
| 01/02/1997 | EP0751390A2 Combustible gas sensor and method for detecting deterioration of catalyst |
| 01/02/1997 | DE19626405A1 Air/fuel ratio control system for i.c. engine |
| 12/31/1996 | CA2120389C Engine catalyst aging system and method for aging catalyst |
| 12/19/1996 | WO1996041071A1 Arrangement and method for determining the oxygen buffer capacity in a catalytic converter |
| 12/18/1996 | EP0748927A1 A device for determining deterioration of a catalytic converter for an engine |
| 12/17/1996 | US5584177 Adsorber temperature-estimating device for internal combustion engines and exhaust gas-purifying system using same |
| 12/17/1996 | US5584176 Engine control to achieve rapid catalyst warm-up |
| 11/28/1996 | DE19620417A1 Catalytic converter diagnosis using multiple catalysts |
| 11/26/1996 | US5577382 Exhaust purification device of internal combustion engine |
| 11/21/1996 | WO1996036863A1 Durability test method for exhaust gas purification device |
| 11/20/1996 | EP0743433A1 A device for determining deterioration of a catalytic converter for an engine |
| 11/20/1996 | EP0743431A2 Method and system for detecting deterioration of exhaust gas catalyst |
| 10/30/1996 | EP0688394B1 Heated catalytic converter efficiency monitoring method |
| 10/23/1996 | EP0678154B1 Exhaust filter backpressure indicator |
| 10/22/1996 | US5566546 Method of inferring soak times for an electronic engine control system |
| 10/15/1996 | US5566091 Method and apparatus for machine health inference by comparing two like loaded components |
| 10/09/1996 | EP0736675A2 Device to control the heating of a heatable catalytic converter |
| 10/09/1996 | EP0736136A1 Method for testing the convertability of a catalytic converter |
| 10/09/1996 | EP0736135A1 Catalytic converter and process for its manufacture |
| 10/02/1996 | EP0735259A2 Engine air/fuel control system |
| 10/02/1996 | EP0735250A2 Device for detecting deterioration of NOx absorbent |
| 10/01/1996 | US5560200 Method and apparatus for functional monitoring of a catalytic converter |
| 10/01/1996 | US5560199 Malfunction monitoring apparatus and method for secondary air supply system of internal combustion engine |
| 09/25/1996 | EP0733787A2 An exhaust purification device of an engine |
| 09/25/1996 | EP0733786A2 An exhaust purification device of an engine |
| 09/24/1996 | US5557933 Malfunction diagnosis apparatus for internal combustion engine |
| 09/24/1996 | US5557929 Control system for internal combustion engine equipped with exhaust gas purifying catalyst |
| 09/19/1996 | WO1996028646A1 Apparatus and method for judging deterioration of catalysts device and oxygen content sensing device |
| 09/18/1996 | EP0731876A1 Process for checking a catalyst heating burner system |
| 09/17/1996 | US5555725 Control system for electrically heated catalyst of internal combustion engine |
| 09/17/1996 | US5555724 Capacity determining system in exhaust emission control unit for internal combustion engine |
| 09/10/1996 | US5553451 Electrically heated catalytic converter system for an engine |