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Patent Searching and Data


Matches 551 - 600 out of 1,689

Document Document Title
WO/2005/003529
The invention relates to a method of estimating a nitrogen oxide mass stored in a catalytic nitrogen oxide trapping device (1) which comprises a catalytic phase and which is traversed by the exhaust gases (2) from the internal combustion...  
WO/2004/113691
An exhaust system (10) for a vehicular lean-bum internal combustion engine (12) comprises a NOx reduction catalyst (18), a source of reductant, means (20) for contacting the catalyst (18) with the reductant, means (TC1) for sensing the t...  
WO/2004/104383
A diesel engine exhaust gas-purifying device and control means enables a main DPF or micro DPF provided in an exhaust gas path of a diesel engine to serve in a wider operation range. A diesel engine exhaust gas-purifying device has a swi...  
WO/2004/104540
The regeneration responses of diesel engine exhaust filters are mapped by conducting multiple regeneration runs under controlled conditions of soot loading, exhaust temperature, exhaust flow rate, exhaust oxygen content and/or other rege...  
WO/2004/104395
Disclosed are a method for operating a part (14) disposed in an exhaust zone (12) of an internal combustion engine (10), and a device for carrying out said method. An exhaust gas component is introduced into said part (14) in a first pha...  
WO/2004/101964
This invention relates to a method of operating a catalyst for treating the exhaust gas of an internal combustion engine, the catalyst comprising, in addition to catalytically active noble metals, also storage components for storing hydr...  
WO/2004/101961
This invention provides a method of regenerating a diesel particulate filter in an exhaust-gas purification system of a diesel engine using lambda variation. During regeneration on demand, the ratio of air to fuel for the corresponding o...  
WO/2004/092555
The invention relates to a method for estimation by means of a physical model, of the thermal state of a catalytic nitrogen oxide trap, installed in the exhaust system of an internal combustion engine, comprising a modelling of the catal...  
WO/2004/081359
The process comprises the operations of; arranging a particulate filter (PT) in the exhaust duct (EP), generating, by indicator devices (S1-S5), electrical signals indicative of the values of parameters (NQ) of the operation of the engin...  
WO/2004/076036
This patent relates to an exhaust gas cleaning technique, and relevant system, and the chemical composition of the scrubbing fluid, particularly suited for motor vehicles, whose operating principle envisages the scrubbing of the exhaust ...  
WO/2004/076827
A soot accumulation amount predicting method for an exhaust gas cleaning filter, characterized by comprising a first step for regenerating the filter (22) by burning soot collected by pores in the exhaust gas cleaning filter (22), a seco...  
WO/2004/076828
A method of regenerating an exhaust gas cleaning filter (22) by removing soot collected by the exhaust gas cleaning filter (22), characterized by comprising a step for estimating the accumulated amount of soot accumulated on the filter (...  
WO/2004/074658
An exhaust system (16) of a diesel engine (10) has a diesel particulate filter (18) for treating exhaust gas. When trapped soot has accumulated to an extent that may affect performance of the filter, an engine control system (12) forces ...  
WO/2004/070175
An exhaust gas reactor is disclosed which utilises microwave energy to create a plasma whereby chemical reactions are promoted. Such reactions serve to reduce pollutant emission. The processor has a microwave-resonant cavity (6) formed e...  
WO/2004/065766
The invention concerns a method for controlling an internal combustion engine (2) for regenerating exhaust gas purifying means (14) arranged on an exhaust line (4) of the engine (2), during a phase of regeneration of the purifying means ...  
WO/2004/063542
Disclosed is a method for regulating a heating device of a particle filter, according to which the exhaust gas back pressure generated by the particle filter is detected as a parameter for the actual black concentration of the particle f...  
WO/2004/061273
A method for controlling the temperature and/or space velocity of exhaust gas provides control of the maximum temperature of the exhaust gas to prevent thermal damage to the Diesel engine components and associated aftertreatment devices ...  
WO/2004/055337
The invention relates to a method of detecting the clogging level of a particle filter in an exhaust line of a diesel engine. The invention is characterised in that it consists in: measuring a maximum temperature reached and/or noting a ...  
WO/2004/055346
A method and a calculating device for modelling the temperature (T_kat) of a catalyst (34) in the exhaust of an internal combustion engine (10) are disclosed. The heat input into the catalyst (34) from exothermic reactions is considered....  
WO/2004/042208
The invention relates to a method and a device for the secondary treatment of the exhaust gas of an internal combustion engine, whereby a liquid is used as an auxiliary agent for said secondary treatment. According to the invention, a pa...  
WO/2004/040103
The invention relates to a method for recognition of the loading of a particle filter (10), in particular a particle filter (10) for filtering the exhaust from an internal combustion engine, characterised in that a parameter for characte...  
WO/2004/031546
A method and apparatus for regenerating a lean NOx adsorber is disclosed where the NOx adsorber isused to treat exhaust gases created during the combustion of gaseous fuels in general. A bypass line isused to maintain a target regenerati...  
WO/2004/027230
An emission reduction apparatus includes first and second exhaust paths (12, 14) carrying respective first and second NOx traps (26, 28). One trap has a smaller capacity than the other and is operative while the larger trap regenerates, ...  
WO/2004/025286
The urea concentration of a urea solution is identified accurately and quickly. A pulse voltage is applied for a predetermined time to a urea concentration identifying sensor heater which comprises a heater and a liquid temperature senso...  
WO/2004/025108
An additive injector device for internal combustion engines of the type associated to an additive tank and being apt to inject in a gaseous stage said additives, which are apt to change the chemical-physical properties of combustion and ...  
WO/2004/022952
The invention relates to a method for operating a nitrogen oxide storage-type catalytic converter of an internal combustion engine, particularly of a motor vehicle, according to which nitrogen oxides produced by the internal combustion e...  
WO/2004/022934
The invention relates to a method for determining the degree of ageing of an NOx-storage catalyst of an internal combustion engine, especially in a motor vehicle. According to the inventive method, a switching operating point (U) is dete...  
WO/2004/018850
An apparatus for clarifying an exhaust gas of a diesel engine, characterized in that it has an NOx adsorption and reduction type catalyst and a diesel particulate filter for oxidizing and removing particulate matters in the exhaust gas, ...  
WO/2004/016915
An exhaust gas cleaner (30) in which a filter (32) for collecting particulates is regenerated after determining the differential pressure (&Dgr P) between before and after the filter (32). It is determined that the time of when the tempe...  
WO/2004/016919
The invention concerns a method and a device for filtering soot particles present in a gas stream. The filtering device comprises a deposition zone where the soot particles are at least partly collected. The filtering device comprises: m...  
WO/2004/016916
A filter control device comprising a first estimation computing unit (100) for computing a first estimation data (XA) by means of a pressure difference across a filter in order to estimation-calculating a particulate deposition amount on...  
WO/2004/016914
In order to estimate the deposition quantity of particulates in a first filter (61) or a second filter (62), a first estimating section (100) outputting first estimation data (XA) based on the differential pressure across the filter, and...  
WO/2004/016913
The invention concerns a device for filtering soot particles present in a gas stream, in particular an electrostatic precipitator. The soot filtering device comprises a deposition zone where the soot particles are at least partly collect...  
WO/2004/016339
The invention relates to a method for regenerating a particulate filter, which is mounted inside the exhaust gas channel of an internal combustion engine, filters particles out of the exhaust gas flowing inside of the exhaust gas channel...  
WO/2004/011783
Exhaust after-treatment system for the reduction of particulate, NOx, HC, CO, VOCs, nano-particle count and sulfur dioxide from diesel exhaust. System employs diesel oxidation catalyst (10), exhaust cooling system (70, 80), particulate c...  
WO/2004/003355
Disclosed is a method for monitoring an exhaust gas system of a motor vehicle comprising an internal combustion engine (1) and a monitoring electronic unit (7). According to the inventive method, a temperature sensor (6) is disposed at t...  
WO/2004/003353
The invention relates to a method for purifying the exhaust gases (A) of a combustion unit (2) from particles (3) contained in the exhaust gases (A). According to the inventive method, the particle size distribution (f) of the particles ...  
WO/2003/106823
The invention concerns a method for regenerating a motor vehicle particle filter (26) which consists in using means for regenerating the filter when the load value exceeds a predetermined threshold. It further consists in calculating a p...  
WO/2003/100225
A method and an apparatus to reduce the emissions of an exhaust stream are provided. One feature of the present invention includes a control unit (1) for metering a quantity of reagent into the exhaust stream. One embodiment of the prese...  
WO/2003/100244
The invention relates to a method for operating a diesel engine, especially for a motor vehicle. Said engine comprises a particle filter (8) which is arranged in a waste gas post-treatment system (12) of the diesel engine and which absor...  
WO/2003/100227
The invention is based on the fundamental principle of measuring the pressure upstream of the diesel particle filter (3) or the pressure based on the flue gas volume upstream of said diesel particle filter (3) after regeneration of the f...  
WO/2003/095130
Methods and systems for plasma-assisted sintering are provided. The method can include initiating a sintering plasma within a cavity (12) by subjecting a gas to radiation in the presence of a plasma catalyst and exposing at least a porti...  
WO/2003/095699
Methods and apparatus are provided for igniting, modulating, and sustaining a plasma (615) for coating objects (250). In one embodiment, a method of coating a surface of an object (250) includes forming a plasma (615) in a cavity (230) b...  
WO/2003/096768
Methods and apparatus for plasma-assisted dry processing are provided. Dry processing may include, for example, treating the at least one part (11) by subjecting it to a plasma formed by subjecting it to a plasma formed by subjecting a f...  
WO/2003/096380
Methods and systems (10) for plasma-assisted nitrogen surface-treatments are provided. The method can include subjecting a gas (24) to electromagnetic radiation (26) in the presence of a plasma catalyst (100, 120, 140) to initiate a plas...  
WO/2003/096773
Methods and apparatus for plasma-assisted joining of one or more parts together are provided. The joining process may include, for example, placing at least first and second joining areas in proximity to one another in a cavity, forming ...  
WO/2003/096747
Apparatus and methods for plasma-assisted heating are provided. In one embodiment, a heating apparatus can include a cavity (14) for containing a gas. The cavity can have a thermally conductive wall and a radiation-transmissive wall. At ...  
WO/2003/095591
Methods and apparatus are provided for igniting, modulating, and sustaining a plasma for various doping processes. In one embodiment, a substrate (250) can be doped by forming a plasma (610) in a cavity (285) by subjecting a gas to an am...  
WO/2003/096771
Plasma-assisted methods and apparatus that use multiple radiation sources are provided. In one embodiment, a plasma is ignited by subjecting a gas in a processing cavity to electromagnetic radiation having a frequency less than about 333...  
WO/2003/095058
Methods and apparatus for plasma-assisted processing of multiple parts are provided. Multi-part processing may include, for example, placing a plurality of parts (11) to be processed in or near a plurality of sub-regions of a cavity (12)...  

Matches 551 - 600 out of 1,689