| Patents for F01N 9 - Electrical control of exhaust gas treating apparatus (7,942) |
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| 10/25/1994 | US5357755 For processing exhaust gases from an engine |
| 10/25/1994 | US5357752 Control of secondary air to an electrically heated catalyst using feedback control |
| 10/25/1994 | US5357749 Apparatus for controlling exhaust concentration |
| 10/18/1994 | US5355671 Method and apparatus for monitoring the function of a catalytic converter |
| 10/13/1994 | WO1994023185A1 Emission control device and method |
| 10/11/1994 | US5353591 Exhaust heating control |
| 10/11/1994 | US5353590 Exhaust heating control |
| 10/06/1994 | DE4410820A1 Secondary air feed unit for an internal combustion engine and gas heating unit for the former |
| 09/29/1994 | WO1994021902A1 Process and device for monitoring the operation of a catalytic converter |
| 09/29/1994 | WO1994021901A1 Process for checking the conversion capability of a catalyst |
| 09/29/1994 | DE4309854A1 Method and device for controlling the secondary air feed for an internal combustion engine |
| 09/22/1994 | DE4408763A1 Exhaust emission control device for an internal combustion engine |
| 09/20/1994 | US5347809 Apparatus and method for removing particulate from an exhaust gas filter |
| 09/15/1994 | WO1994020743A1 Method of enhancing combustion in an internal-combustion engine and a device for carrying out the method |
| 09/15/1994 | WO1994020736A1 Apparatus and method for removing particulate from an exhaust gas filter |
| 09/08/1994 | DE4306905A1 Method for promoting combustion in an internal combustion engine and device for carrying out the method |
| 09/08/1994 | DE4306904A1 Method and device for improving the combustion in an internal combustion engine |
| 08/30/1994 | US5341641 Dual sensor type air fuel ratio control system for internal combustion engine |
| 08/23/1994 | US5339630 Exhaust burner catalyst preheater |
| 08/23/1994 | US5339628 Method for monitoring the catalytic activity of a catalytic converter in the exhaust gas system of an internal combustion engine |
| 08/11/1994 | DE4303711A1 Diesel particle filter system |
| 08/11/1994 | DE4303709A1 Diesel particle filter system |
| 08/11/1994 | DE4303626A1 Method for the control of particle filter systems |
| 08/11/1994 | DE4303625A1 Method for the regeneration of particle filter systems |
| 08/04/1994 | WO1994017291A1 Exhaust gas cleaning device for an internal combustion engine |
| 08/03/1994 | EP0608752A1 Filter regenerating apparatus for an internal combustion engine |
| 08/02/1994 | US5333446 Diagnostic system for a secondary air supplier in an engine |
| 07/28/1994 | DE4241571A1 Internal combustion engine operating method |
| 07/26/1994 | US5331809 Exhaust gas purification system for an internal combustion engine |
| 07/21/1994 | WO1994016205A1 Exhaust filter backpressure indicator |
| 07/21/1994 | WO1994016204A1 Diesel engine exhaust regenerable filter system |
| 07/21/1994 | CA2152913A1 Exhaust filter backpressure indicator |
| 07/21/1994 | CA2151954A1 Diesel engine exhaust regenerable filter system |
| 06/28/1994 | US5325038 Driving apparatus for controlling an electric load in a vehicle |
| 06/28/1994 | US5323607 Exhaust emission control system and method having improved heating control function for catalyst |
| 06/23/1994 | WO1994013938A1 Process for controlling the heating of an electrical heatable catalytic converter |
| 06/23/1994 | DE4341538A1 Sauerstoffsensorbaugruppe für einen Motor Oxygen sensor assembly for a motor |
| 06/22/1994 | EP0602963A1 Exhaust gas purification method and apparatus therefor |
| 06/22/1994 | EP0602192A1 Antenna system for soot detecting apparatus |
| 06/16/1994 | DE4342062A1 Nitrogen-oxide absorbing automotive exhaust cleaning system - absorbs nitrogen oxides when lean fuel flow and liberates nitrogen oxide in atmos. of lesser oxygen concn.; cuts the consumption of reducing agent required for nitrogen oxide regeneration and accelerates regeneration |
| 06/16/1994 | DE4242274A1 Particulate filter regeneration at engine-dependent constant temp. - is carried out with fuel supply for combustion regulated adaptively in accordance pref. with rotational speed of engine |
| 06/15/1994 | EP0601287A2 Apparatus for purifying exhaust gas of diesel engine |
| 06/14/1994 | US5321231 System for supplying power to an electrically heated catalyst |
| 06/14/1994 | US5319930 Exhaust gas purifying device for an internal combustion engine |
| 06/09/1994 | WO1994012779A1 Control system for an internal combustion engine |
| 06/09/1994 | WO1994012778A1 Exhaust gas cleaning apparatus for internal combustion engines |
| 06/01/1994 | EP0598917A1 Exhaust emission control system for internal combustion engine |
| 06/01/1994 | EP0598916A1 Exhaust emission control system for internal combustion engine |
| 05/18/1994 | EP0597106A1 Exhaust and purification device for internal combustion engine |
| 05/03/1994 | US5307626 Method and apparatus for controlling an internal combustion engine, using the current temperature of a downstream catalytic converter |
| 04/26/1994 | US5305602 Device for catching and removing particulates for a diesel engine |
| 04/14/1994 | DE4334763A1 IC engine exhaust gas cleaning system in IC engine exhaust gas pipeline - has Nitrogen-Oxide absorption unit which is arranged in the exhaust gas pipeline and absorbs Nitrogen-Oxide if air-fuel ratio flowing in unit is lean and frees Nitrogen-Oxide if ratio is rich |
| 04/12/1994 | US5301502 After-burner system |
| 04/06/1994 | EP0590699A1 Burner for heating exhaust gas |
| 03/16/1994 | EP0587146A2 Method and device for determination of the loading state of particle filters |
| 03/16/1994 | EP0586408A1 Test method for a device for injection of air into the exhaust gases of an internal combustion engine. |
| 03/15/1994 | US5293740 Method and arrangement for controlling the quantity of fuel for an internal combustion engine having a catalytic converter |
| 03/10/1994 | DE4310961C1 Selective catalytic nitrogen oxide(s) redn. in exhaust gas - by stepwise reductant supply to catalyst sections on attaining minimum temp. after engine starting |
| 03/09/1994 | EP0585900A1 An exhaust gas purification device of an engine |
| 03/03/1994 | DE4325202A1 Control arrangement for secondary -air supply to an exhaust catalytic converter - for catalytic reduction of hydrocarbons, carbon mon:oxide and nitrogen oxide(s) |
| 02/22/1994 | US5287698 Exhaust gas purifying device for an internal combustion engine |
| 02/17/1994 | WO1994003711A1 Process and device for determining the load level of particle filters |
| 02/15/1994 | US5285639 Method and system for controlling secondary air for internal combustion engine |
| 02/10/1994 | DE4326384A1 Exhaust gas cleaning system for IC engine - has electrical heating system for catalyser in exhaust pipe and control unit connecting batteries in series or parallel |
| 02/09/1994 | CN2155438Y Apparatus for lowering quick-exhaust pollution |
| 02/08/1994 | US5284016 Exhaust gas burner reactor |
| 02/03/1994 | DE4225274A1 Vehicle catalytic converter - heated before engine start-up, and activated by infrared door locking system remote control unit |
| 02/02/1994 | EP0581279A2 An exhaust gas purification device for an engine |
| 01/26/1994 | EP0545976B1 Monitoring of the catalytic activity of a catalytic converter through which a catalysable fluid flows |
| 01/26/1994 | EP0545974B1 Monitoring of the catalytic activity of a catalyst in the exhaust gas system of an internal combustion engine |
| 01/26/1994 | EP0521052B1 Process and device for monitoring the performance of a catalyst in an internal combustion engine |
| 01/18/1994 | US5279116 Device for determining deterioration of a catalytic converter for an engine |
| 01/06/1994 | WO1993020340A3 Methods and device for assessing the operatability of a catalytic converter |
| 01/05/1994 | DE4320880A1 Controlled air supply to catalyser in vehicle exhaust pipe - has heated and pumped airflow with control valve to restrict airflow during start-up |
| 12/23/1993 | WO1993025806A1 Exhaust emission control system for internal combustion engine |
| 12/23/1993 | WO1993025805A1 Exhaust emission control system for internal combustion engine |
| 12/23/1993 | DE4320509A1 Current supply circuitry esp. for motor vehicle - uses three=phase, pref. voltage-regulated, generator with additional transformer providing independent supply for, e.g. controlled warm=up of exhaust catalytic converter |
| 12/21/1993 | US5271906 Exhaust emission control apparatus using catalytic converter with hydrocarbon absorbent |
| 12/21/1993 | US5271224 Variable exhaust system for an internal combustion engine |
| 12/16/1993 | DE4219433A1 Controlling computer based process control system - using monitoring and alarm system with deactivation of alarm after set period followed by restart and repeated number of times |
| 12/15/1993 | EP0573672A1 Exhaust emission control device in internal combustion engine |
| 11/30/1993 | US5265418 Management system for an internal combustion engine |
| 11/30/1993 | CA2030998C Exhaust gas purification system for an internal combustion engine using alcohol blended gasoline for fuel |
| 11/23/1993 | US5263318 After-burner system |
| 11/18/1993 | DE4314860A1 Battery powered direct current generator for pre-heating catalytic converter in motor vehicle - has parallel power MOS transistor modules controlled via reed relay and having common outputs connected in respective input resistors |
| 11/16/1993 | US5261230 Device for controlling heating of catalyst for purifying exhaust gas |
| 11/02/1993 | US5257501 Control device for a catalyst having an electric heater |
| 10/28/1993 | WO1993021428A1 Adaptive multifrequency reactive muffler |
| 10/28/1993 | DE4213640A1 Detecting soot particle emissions of diesel engines, esp. for motor vehicle - measuring quantity of soot collected in soot filter during engine test operation with preset motor power, speed, torque and load. |
| 10/26/1993 | US5255511 Method and apparatus for operational monitoring of a catalytic converter of an internal combustion engine and a catalytic converter to be monitored |
| 10/19/1993 | US5253476 Pulsed, reverse-flow, regenerated diesel trap capturing soot, ash and PAH's |
| 10/14/1993 | WO1993020340A2 Methods and device for assessing the operatability of a catalytic converter |
| 10/13/1993 | EP0565142A2 Catalyst with at least one temperature sensor |
| 10/07/1993 | DE4211092A1 Verfahren und Vorrichtung zum Beurteilen der Funktionsfähigkeit eines Katalysators Method and apparatus for evaluating the operability of a catalyst |
| 10/05/1993 | US5250268 Catalytic cleaning arrangement for exhaust from an internal combustion engine |
| 09/30/1993 | DE4208609A1 Exhaust gas heating method for vehicle catalyser - involves hydrogen fired heater using hydrogen and oxygen derived from electrolysis of water |
| 09/29/1993 | EP0562805A1 NOx purification apparatus for an internal combustion engine |
| 09/22/1993 | EP0560991A1 Device for purifying exhaust of internal combustion engine |
| 09/02/1993 | WO1993017228A1 Process and device for operating an electrically heatable catalytic converter |
| 08/26/1993 | DE4205134A1 Filter mechanism for cleaning exhaust gases, esp. from diesel engines - includes changeover valves at inlets to filter elements to allow these to be fed with exhaust gas or regeneration medium in required sequence |