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Patent Searching and Data


Matches 651 - 700 out of 1,695

Document Document Title
WO/2002/031324
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/2002/027162
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/2002/025074
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/2002/022240
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/2002/020967
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/2002/014659
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/2002/014658
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/2002/008583
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/2002/008584
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/2002/006654
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/2001/094758
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/2001/069052
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/2001/063110
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/2001/055566
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/2001/049995
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/2001/049987
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/2001/048358
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/2001/044629
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/2001/033059
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/2001/033051
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/2001/027447
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/2001/025601
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/2001/021942
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/2001/021951
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/2001/006098
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/2000/077355
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/2000/071879
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/2000/068557
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/2000/060229
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/2000/029729
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/2000/028200
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/2000/028196
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/2000/021881
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/2000/017499
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/2000/009870
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/2000/008313
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/2000/008311
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/1999/061770
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/1999/060255
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/1999/051862
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/1999/049190
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/1999/047795
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/1999/039809
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...  
WO/1999/035379
Method of monitoring the temperature of an exhaust system having a cooling loop, for internal combustion engines, wherein a catalytic converter and a nitrogen oxide trap are fitted in the exhaust system and the cooling surface is control...  
WO/1999/011909
A method and system for reducing concentration within an internal combustion engine (12) exhaust system (43) is disclosed. Soot and products of incomplete combustion in the engine exhaust gas stream (3) are destroyed by oxidizing them in...  
WO/1998/045586
A process, arrangement and device are disclosed for monitoring a regenerating NOx accumulator (2) in an exhaust line, in particular of a diesel or lean mixture engine, through which flows a NOx-containing gas. The temperature in the exha...  
WO/1998/043732
A safe, reliable SCR system for reducing NO�x? emissions from a lean-burn internal combustion engine utilizes urea in aqueous solution. Overheating and hydrolysis of the solution are prevented by maintaining the temperature of the urea...  
WO/1998/035143
In order to eliminate by catalyse a toxic substance in the exhaust gas (13) from a combustion system (10) by adding to that substance a dosed fluid (30), it is provided that a reference value be set for the mass flow rate (50) of the tox...  
WO/1998/027322
A method is disclosed for de-sulphurating a NOx trap in an engine and exhaust system which comprises heating the NOx trap (20) in a reducing atmosphere to a temperature at which sulphur is eliminated from the NOx trap by causing an exoth...  
WO/1998/013589
Disclosed is a secondary-air system for an internal combustion engine, comprising a secondary-air line which is connected through an inlet (9a) to an intake line (1) and through an outlet to an exhaust line (8). The inlet (9a) is located...  

Matches 651 - 700 out of 1,695