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Patent Searching and Data


Matches 651 - 700 out of 2,895

Document Document Title
WO/2002/044531A1
The inventive method for monitoring a particle filter system in the exhaust gas train of an internal combustion engine provides that the load state of the particle filter is determined respectively by a first method, which is independent...  
WO/2002/038933A1
The invention relates to a method and device for controlling an exhaust gas aftertreatment system. A first state quantity characterizes the state of the exhaust gas aftertreatment system. A second state quantity takes into account other ...  
WO/2002/038932A1
The invention relates to a method and device for controlling an exhaust gas aftertreatment system, in particular, of an internal combustion engine. A state quantity is determined which characterizes the state of the exhaust gas aftertrea...  
WO/2002/038923A1
The invention relates to a method and device for controlling an exhaust gas aftertreatment system, in particular, of an internal combustion engine. In a first operating state, a first quantity (SIMP), which characterizes the quantity of ...  
WO/2002/038934A1
A method and device for the control of an exhaust treatment system, in particular on an internal combustion engine are disclosed. A special operation is periodically carried out, whereby the control and/or monitoring of the special opera...  
WO/2002/038935A1
The invention relates to a method and a device for controlling an exhaust gas aftertreatment system. A special operating mode is initiated when a state variable exceeds a limit value which can be predetermined according to a variable whi...  
WO/2002/033232A2
A diesel powered vehicle is provided with an SCR system (50, 51, 54, 56, 42) which uses an external reducing reagent to convert Nox emissions in a manner which accounts for the effects of Nox transient emissions of the reducing catalyst....  
WO/2002/031324A1
An exhaust emission control device of an internal combustion engine, comprising a particulate filter (6) disposed in an engine exhaust system (3), a fresh air amount detection means (5) for detecting the amount of fresh air led into an e...  
WO/2002/027162A1
The invention concerns a method for controlling a particle filter (14) equipping an internal engine exhaust line (10), which consists in regenerating the filter (14) by particle combustion. The invention is characterised in that it deter...  
WO/2002/025074A1
The invention relates to a device for dosing a reducing agent, especially a urea or a urea-water solution, comprising means for feeding the reducing agent into a catalytic converter (30) provided for removing nitrogen oxides from the exh...  
WO/2002/022240A1
A reactor (100) for the plasma assisted treatment of effluent gases such as exhaust from internal combustion engines, and effluent gases from industrial processes and incineration. The reactor includes a stage for the plasma-assisted pro...  
WO/2002/020967A1
The invention relates to a method for determining the NOx mass flow in the exhaust gas of an internal combustion engine at the input of an NOx storage catalyst, based on operating parameters of the internal combustion engine. The method ...  
WO/2002/014659A1
The invention relates to a method and model for modeling an elimination phase of a nitrogen oxide (NOx) accumulating catalytic converter (12') of an internal combustion engine (1), especially of a motor vehicle. Said NOx accumulating cat...  
WO/2002/014658A1
The invention relates to a method for determining the state of a nitrogen oxide (NOx) storage catalyst (12') on an internal combustion engine (1), whereby, during a storage phase (E) in which nitrogen oxides (NOx) emitted by the internal...  
WO/2002/008583A1
An exhaust emission control device of an internal combustion engine, comprising an NOx catalyst (17) installed in the exhaust gas passage of a lean burnable internal combustion engine and discharging the NOx absorbed therein with reducin...  
WO/2002/008584A1
The invention relates to a method for operating a nitrogen oxide (NOx) storage catalyst (12') in an internal combustion engine (1), in particular, on a motor vehicle. During a first operating phase of the storage catalyst (12'), nitrogen...  
WO/2002/006654A1
The invention relates to a method for adapting a required catalyst temperature range for a NO¿x? storage catalyst (18) which is arranged in the exhaust gas flow of a combustion engine and which is supplied by a lean exhaust gas, wherein...  
WO/2001/094758A1
Combustion engine comprising an exhaust pipe, and a particle filter located in said exhaust pipe comprising a membrane which is permeable to gas components generated by a combustion process in the combustion engine but impermeable to soo...  
WO/2001/069052A1
A device for reforming an exhaust gas filter in a shorter time includes casings, in each of which are arranged a plurality of first temperature detectors (26a, 26b) for detecting the temperature in the casing and a plurality of second te...  
WO/2001/063110A1
A controller (6) computes the oxygen storage amount of the catalyst (3) separately as a high-speed component and a low speed component in accordance with actual characteristic. A target air-fuel ratio of an engine (1) is computed so that...  
WO/2001/055566A1
The invention relates to a method for detecting a NO¿x? storage capacity of a NO¿x? storage catalyst by means of a NO¿x?-sensitive measuring device which is arranged downstream in relation to the NO¿x? storage catalyst that is arrang...  
WO/2001/049995A1
An internal combustion engine (1), in particular, for a motor vehicle, is disclosed, comprising a catalyst (12), which may be charged with and discharged of nitrogen oxides. A NOx-Sensor (14) is provided with which the NOx emissions post...  
WO/2001/049987A1
The invention relates to an internal combustion engine (1), in particular, for a motor vehicle, in which, in a first operational mode, fuel can be directly injected into a combustion chamber (4) during an induction phase and, in a second...  
WO/2001/048358A2
The invention concerns a method for controlling a particulate filter (6) provided on an internal combustion engine exhaust line (1), which consists in triggering the actuation of means assisting the filter (6) regeneration in accordance ...  
WO/2001/044629A2
The invention relates to a method and a device for exhaust gas and catalyst temperature determination in an exhaust system of an internal combustion engine in a motor vehicle. Said exhaust system comprises an exhaust pipe, with at least ...  
WO/2001/033059A1
An internal combustion engine (1), in particular for a vehicle, is disclosed, which comprises a combustion chamber (4), into which fuel may be injected during a compression phase in one operating variant, or during an inlet phase in anot...  
WO/2001/033051A1
The invention relates to a method for the post-treatment of exhaust gases by subsequent injection of fuel in a diesel-type internal combustion engine that is provided with a pre-catalyst and a particle filter. According to this method, t...  
WO/2001/027447A1
The invention relates to a diagnostic method for an exhaust system of a combustion engine (1) for removing the residues of the particles emitted by the engine (1), said exhaust system comprising a particle filter (6) and controlled means...  
WO/2001/025601A1
A device for treatment of waste gases from an internal combustion engine whereby a reducing agent, in particular a urea or an aqueous urea solution, is brought into contact with said gas; comprising a mixing chamber (8) into which the re...  
WO/2001/021942A1
The invention concerns a method for monitoring the operating conditions of at least two catalytic converters of a heat engine operating in lean burn, characterised in that it consists in: assessing the efficacy of hydrocarbon treatment b...  
WO/2001/021951A1
The invention relates to a method for monitoring the functioning of an NO¿x? sensor (18) which is arranged in an exhaust gas channel of an internal combustion engine and which is located downstream from an NO¿x? storage catalytic conve...  
WO/2001/006098A1
In order to prevent the liquid reduction agent in an SCR method for an internal combustion engine (1) from freezing, additional electric heating resistances are applied to the pressure sensor diaphragm of the pressure sensor (18), presen...  
WO/2000/077355A1
The invention relates to a method for detecting deterioration of at least one NO¿x? storage catalyst arranged in the exhaust line of an internal combustion engine, whereby at least one exhaust gas constituent is detected by a gas sensor...  
WO/2000/071879A1
Means for influencing the exhaust gas of said internal combustion engine are provided. When certain conditions are present, a special operating mode in which the exhaust gas preferably has a higher energy content, is initiated. In said s...  
WO/2000/068557A1
The invention relates to a method and a device for controlling an internal combustion engine with an exhaust treatment system. A value (B) which characterizes the state of the exhaust treatment system is determined based on at least one ...  
WO/2000/060229A1
An NOx sensor (27) detects an NOx concentration released to the atmosphere from an occlusion type NOx catalyst (25); a total NOx exhaust amount (A) is calculated based on the output from the NOx sensor (27); when a total NOx emission amo...  
WO/2000/029729A1
The invention relates to a method for monitoring a NO¿x? storage catalytic converter (14) positioned downstream of an internal combustion engine (12) run on a lean mixture. According to said method the NO¿x? storage efficiency of the c...  
WO/2000/028200A1
According to the inventive method, an internal combustion engine is operated in the stratified charge operation and a base value for the NOx crude emission is determined which depends on the amount of fuel (MFF) injected into the cylinde...  
WO/2000/028196A1
An apparatus and method to treat fluid streams, and in particular emissions from lean-burn engines such as diesel engines, are disclosed, which use multiple catalysts chosen to remove hydrocarbons, carbon monoxide, particulate matter, an...  
WO/2000/021881A1
A safe, reliable SCR system for reducing NO¿x? emissions from a lean-burn internal combustion engine utilizes urea in aqueous solution. A modular assembly is provided for mounting inside an urea reagent tank (30) which enables controlle...  
WO/2000/017499A1
A problem encountered in computer-controlled diesel catalytic converters is the slowing down of reactant activity. The invention thus provides for the dosage (S10) of the reactant (10) to be coupled (S2, S8) by means of a functional rela...  
WO/2000/009870A1
The invention relates to a method according to which the temperature of the catalytic converter monolith is determined at the catalytic converter intake by means of a temperature model on the basis of modelled or measured exhaust-gas tem...  
WO/2000/008313A1
A combustor (10) for enhancing the combustion of entrained fuel or oil in the exhaust stream of an internal combustion engine is provided. The combustor (10) includes a housing (20) and an expansion chamber (60) inserted into the exhaust...  
WO/2000/008311A1
The invention relates to a method for desulfurising a catalyst system such as a NO¿x? accumulating catalyst (12) and/or a particle absorbing catalyst (16), which is mounted downstream from an internal combustion engine (10) operated wit...  
WO/1999/061770A1
In order to check the efficiency of an NOx accumulation catalyst (3) mounted in the exhaust system of an internal combustion engine (1) operated with a lean mixture, the actual accumulation capacity of the NOx accumulation catalyst (3) i...  
WO/1999/060255A1
An exhaust system or an engine (12) includes a lean NOx catalytic device (18), and a heat exchanger (70) positioned upstream of the catalytic device (18). Control means (44, 46) controls a valve (36) to regulate exhaust gas flow through ...  
WO/1999/051862A1
An exhaust emission particulate remover which is connected to a combustion emission gas exhausting path to remove particulate contained in the emission gas, comprising filter units (13 and 14), a fuel injection nozzle (31), and an ignito...  
WO/1999/049190A1
The invention relates to a method for control of a combustion engine (1) having means (4, 5, 17) for generation of an air/fuel mixture to each cylinder (3) of the engine (1), an exhaust system (7, 8) which is connected to the engine (1),...  
WO/1999/047795A2
Method and device to monitor functioning of a catalyst (15) mounted in the exhaust gas section (3) of an internal combustion engine (1), enabling determination of the conversion rate as a function of the temperature of the catalyst (15) ...  
WO/1999/039809A1
A system for NOx reduction in combustion gases, especially from diesel engines, incorporates an oxidation catalyst to convert at least a portion of NO to NO¿2?, a particulate filter, a source of reductant such as NH¿3?, and an SCR cata...  

Matches 651 - 700 out of 2,895