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Patent Searching and Data


Matches 551 - 600 out of 2,897

Document Document Title
WO/2005/073525A1
The invention relates to a method for controlling a piston-type internal combustion engine (10) having an intake line (20) for delivering air to combustion chambers of the engine and an exhaust system (15, 22) for removing exhaust gases ...  
WO/2005/068797A1
The invention relates to a method and device (10) for controlling the injection of reducing agent upstream from a catalyst (4) in an exhaust line (2) from a combustion engine. According to the invention, the injection of reducing agent i...  
WO/2005/061866A1
The invention relates to a method for operating a dosing valve (31) and to a device for carrying out said method, involving diagnosis of the dosing valve (31) in order to establish a through-flow rate of a reagent which is to be introduc...  
WO/2005/059328A1
The invention relates to a method for operating a particle filter (4) in the exhaust gas train of an internal combustion engine (1) of a motor vehicle, involving recurring soot combustion processes for the particle filter (4). According ...  
WO/2005/059329A1
In the case where an operating state of an internal combustion engine (1) belongs to a filter forced recovery region, filter forced recovery is performed (S106) when an amount of particulate matter deposited in a filter (20) becomes equa...  
WO/2005/060078A2
A circuit for providing a potential difference across a gap between two electrodes of a fuel reformer, oxides of nitrogen trap or soot filter regenerator for an internal combustion engine or the like. The circuit includes a power source,...  
WO/2005/052332A1
The inventive system for estimating quantities of pollution compounds emitted in the exhaust gas of a diesel engine for a motor vehicle comprises means for regenerating a solid particle filter and an electronic control unit which manages...  
WO/2005/052331A1
The invention relates to a method for regenerating a particle filter (10) integrated into an exhaust line (12) of an internal combustion engine (34), wherein the exhaust gas flows into the filter via an inflow surface (16) and exit the f...  
WO/2005/049986A1
The invention relates to a support system for the maintenance of a particle filter fitted in an exhaust system on a motor vehicle diesel engine, characterised in comprising means (1), for calculation of the volume of ash from engine lubr...  
WO/2005/042934A2
A catalytic partial oxidizer (30) provides syngas (hydrogen and carbon monoxide) to an apparatus intermittently using syngas such as valves (34) feeding NOx traps (35), for brief periods of time. During turndown times when syngas is not ...  
WO/2005/033482A1  
WO/2005/033480A1
An exhaust gas purification device of an engine, comprising an NOx reduction catalyst disposed in an engine exhaust pipe and reducing, for purification, NOx with ammonia generated from an urea solution, and an injection nozzle injecting/...  
WO/2005/033481A1
An exhaust gas purification device of an engine capable of increasing NOx removing rate by suppressing the deposition of the components (reducer solutes) of a reducer in an exhaust passage even if the temperature of exhaust gas from the ...  
WO/2005/026507A1
The invention relates to an exhaust gas purification device for internal combustion engines and a method for operating the same. Known purification devices of said type comprise a soot particle filter (110) for filtering soot particles f...  
WO/2005/005797A2
A system or method for controlling the delivery of fuel into the transient flow of an exhaust system (20) to control emissions. A mathematical model representative of the exhaust system (20) can be used to determine, based on operating c...  
WO/2005/003529A1
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/2004/113691A2
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/2004/104383A1
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/2004/104540A1
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/2004/104395A1
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/2004/101964A1
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/2004/101961A1
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/2004/092555A1
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/2004/081359A1
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/2004/076036A1
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/2004/076827A1
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/2004/076828A1
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/2004/074658A2
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/2004/070175A1
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/2004/065766A1
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/2004/063542A1
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/2004/061273A2
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/2004/055337A1
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/2004/055346A1
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/2004/042208A1
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/2004/040103A1
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/2004/031546A2
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/2004/027230A1
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/2004/025286A1
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/2004/025108A1
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/2004/022952A1
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/2004/022934A1
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/2004/018850A1
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/2004/016915A1
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/2004/016919A1
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/2004/016916A1
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/2004/016914A1
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/2004/016913A2
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/2004/016339A2
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/2004/011783A2
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...  

Matches 551 - 600 out of 2,897