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Patent Searching and Data


Matches 351 - 400 out of 2,952

Document Document Title
WO/2009/037327A1
The invention relates to a method for adapting the reducing agent feed in an exhaust gas aftertreatment system comprising an SCR catalyst for removing nitrogen oxides from the exhaust gas of an internal combustion engine and at least one...  
WO/2009/037406A1
The invention relates to equipment for regenerating a pollution control element such as a particle filter. The equipment includes an engine control calculator, a global positioning system, a system providing information on the road traff...  
WO/2009/034174A1
Method for controlling an injector inte nded for injecting a pollution-control liquid additive into the exhaust gases of an internal combustion engine at a flow rate governed by a given frequency and openi ng time of the injector, the in...  
WO/2009/034175A1
Method for heating a urea SCR system using at least two resistive heating elements (R1, R2), one of which (R1) is intended for heating one or some (part(s) of) component(s) always in contact with a substantial amount of urea and the othe...  
WO/2009/031600A2
The distribution of trapped particulate matter such as PM, which absorbs electromagnetic waves, is readily detected with a high accuracy by a non-destructive method. The steps of applying an electromagnetic wave with a frequency of sever...  
WO/2009/030346A1
The invention relates to an operating and diagnostic method for an SCR exhaust-gas aftertreatment system, which has an SCR catalytic converter (5) with ammonia storage capacity, of an internal combustion engine (1). In the method, a sign...  
WO/2009/030709A1
The invention relates to an internal combustion engine (14) which is equipped with an SCR system that comprises an SCR catalyst (23). In order to operate the internal combustion engine (14), an ammonia loading degree (NH3_LD) of the SCR ...  
WO/2009/031600A3
The distribution of trapped particulate matter such as PM, which absorbs electromagnetic waves, is readily detected with a high accuracy by a non-destructive method. The steps of applying an electromagnetic wave with a frequency of sever...  
WO/2009/024622A8
A selective catalytic reduction (SCR) catalyst control system and method for an engine is disclosed. Urea injection to an SCR catalyst is determined based on an SCR catalyst model, which determines a value of stored NH3 in the SCR cataly...  
WO/2009/024701A1
The invention relates to a system for managing a reagent dispensing device in the exhaust line of an engine, said circuit including a tank (1), an injection means (3), a means for conditioning the reagent, sensors capable of determining ...  
WO/2009/024622A3
A selective catalytic reduction (SCR) catalyst control system and method for an engine is disclosed. Urea injection to an SCR catalyst is determined based on an SCR catalyst model, which determines a value of stored NH3 in the SCR cataly...  
WO/2009/024622A2
A selective catalytic reduction (SCR) catalyst control system and method for an engine is disclosed. Urea injection to an SCR catalyst is determined based on an SCR catalyst model, which determines a value of stored NH3 in the SCR cataly...  
WO/2009/023368A1
A system is provided for removing particulate matter from a diesel particulate filter. The diesel particulate filter includes at least one diesel particulate filter unit to filter particulate matter from diesel engine exhaust gas receive...  
WO/2009/021847A1
In order to operate an internal combustion engine (14) of a motor vehicle, during a plurality of driving cycles of the motor vehicle at least one operating variable is recorded during each run. The operating variable is representative of...  
WO/2009/023474A1
A system (410") is provided for removing particulate matter from a diesel particulate filter (414"). The system includes an engine controller (429") coupled to a diesel engine (411"), and to a locomotive controller (444").The locomotive ...  
WO/2009/016822A3
An exhaust gas purifying system includes: a NOx trapping agent (2) which adsorbs nitrogen oxide when an excess air ratio of exhaust gas is more than 1, and releases nitrogen oxide when the excess air ratio is 1 or less; a NOx purifying c...  
WO/2009/016266A8
An oxidation catalyst temperature control system and method for an engine having an exhaust means including an oxidation catalyst is provided. A post fuel calculation means calculates a value representing a post quantity of fuel to be in...  
WO/2009/016266A3
An oxidation catalyst temperature control system and method for an engine having an exhaust means including an oxidation catalyst is provided. A post fuel calculation means calculates a value representing a post quantity of fuel to be in...  
WO/2009/016822A2
An exhaust gas purifying system includes: a NOx trapping agent (2) which adsorbs nitrogen oxide when an excess air ratio of exhaust gas is more than 1, and releases nitrogen oxide when the excess air ratio is 1 or less; a NOx purifying c...  
WO/2009/016266A2
An oxidation catalyst temperature control system and method for an engine having an exhaust means including an oxidation catalyst is provided. A post fuel calculation means calculates a value representing a post quantity of fuel to be in...  
WO/2009/010645A3
The invention relates to a reliable, simple and precise method for detecting the threshold thickness of a purely resistive material deposited on a sensor, and providing a response independent from the material resistivity. The invention ...  
WO/2009/007831A3
An exhaust gas control apparatus includes a PM trapping filter (31) provided in an exhaust gas passage (15) of an internal combustion engine (10), an oxygen concentration sensor (40) provided upstream of the filter, a device that estimat...  
WO/2009/007831A2
An exhaust gas control apparatus includes a PM trapping filter (31) provided in an exhaust gas passage (15) of an internal combustion engine (10), an oxygen concentration sensor (40) provided upstream of the filter, a device that estimat...  
WO/2009/004226A1
The invention relates to a system (10) for regenerating the pollution control means (12) with a filtration medium arranged in the exhaust line (14) of an automobile, said system (10) including means (18, 20, 22) for generating exothermic...  
WO/2009/005661A1
An engine system for a power unit (10) is disclosed. The engine system includes an exhaust system (14) having at least one exhaust treatment device (82, 84) and an air induction system (12) having at least one heater (40). The heater is ...  
WO/2008/157487A2
A diesel particulate filter assembly configured to be incorporated into an exhaust treatment device, the diesel filter assembly comprising: a ceramic media disposed about a center support defining an outlet flow path; a pair of end suppo...  
WO/2008/157487A3
A diesel particulate filter assembly configured to be incorporated into an exhaust treatment device, the diesel filter assembly comprising: a ceramic media disposed about a center support defining an outlet flow path; a pair of end suppo...  
WO/2008/153873A2
A diesel combustion engine comprises multiple particulate filters and corresponding exhaust piping and valving in the exhaust manifold and/or exhaust line, configured to enable regeneration to occur in one of the DPF filters through heat...  
WO/2008/153873A3
A diesel combustion engine comprises multiple particulate filters and corresponding exhaust piping and valving in the exhaust manifold and/or exhaust line, configured to enable regeneration to occur in one of the DPF filters through heat...  
WO/2008/153695A1
A method is provided for compensating for factors affecting particulate matter accumulation within an aftertreatment element (20) of an engine exhaust system (16). The method comprises determining rate of change of flow resistance throug...  
WO/2008/150374A1
An exhaust treatment system (12) associated with a power source (10) is disclosed. The exhaust treatment system may have a filter (42) located to remove particulate matter from a flow of exhaust, and a regeneration device (45) located pr...  
WO/2008/149213A1
An internal combustion engine exhaust gas purification apparatus purifies exhaust gas using a NOx storage-reduction catalyst unit (22) and a NOx selective reduction catalyst unit (23). The NOx selective reduction catalyst unit (23) is pr...  
WO/2008/150019A1
The present invention is intended to control the degree of dispersion of a reducing agent added to an exhaust gas flowing into an exhaust gas purification apparatus. Before addition fuel is added by a fuel addition valve, a valve opening...  
WO/2008/150372A1
A method is provided for compensating for variability in ash accumulation rates within an aftertreatment element (18) of an engine (12) exhaust system (16). The method includes determining flow resistance values through the aftertreatmen...  
WO/2008/145566A1
The invention relates to a method and a device for operating a motor vehicle (1) which comprises a drive (2) and an exhaust gas system (3) having at least one adjustable heating device (4) that can be brought in contact with the exhaust ...  
WO/2008/142321A1
The invention relates to a method of injecting a reducing agent into an exhaust line of an engine, the reducing agent being intended to be used to chemically reduce, during a selective catalytic reduction reaction, called SCR, nitrogen o...  
WO/2008/138682A1
The invention relates to a diagnostic method for a reagent material to be introduced into an exhaust gas region (11) of an internal combustion engine (10), or a precursor of the reagent material, which is required to convert at least one...  
WO/2008/139146A3
A reaction vessel (368) comprises a liquid level of urea solution and a gaseous hydrolysis product having a gas ratio which contains at least some amount of ammonia gas. The production of the gaseous hydrolysis product is controlled by r...  
WO/2008/138849A1
The present invention relates to a method for the detection of particles in a gas flow with a sensor element comprising at least two electrodes, by applying a measurement voltage to the electrodes of the sensor element during a measureme...  
WO/2008/138023A1
The invention relates to a method for the operation of a filter arrangement for the separation of soot particles out of the exhaust-gas flow of a diesel engine, in which method the exhaust-gas flow is conducted through ducts (5) of a cer...  
WO/2008/139146A2
A reaction vessel (368) comprises a liquid level of urea solution and a gaseous hydrolysis product having a gas ratio which contains at least some amount of ammonia gas. The production of the gaseous hydrolysis product is controlled by r...  
WO/2008/135535A1
The method according to the invention for providing ammonia for the selective catalytic reduction of nitrogen oxides in the exhaust system of an internal combustion engine comprises the following steps: a) recording at least one actuatin...  
WO/2008/129184A1
The invention relates to a method for urea injection in an exhaust line muffler of an engine (1), the urea containing ammonia which is used to chemically reduce, in a selective catalytic reduction reaction, called SCR, the nitrogen oxide...  
WO/2008/115843A2
A method for simultaneously measuring one or more properties (e.g. temperature, concentration of NOx and ammonia, etc) in an exhaust gas mixture. Signals from one or more sensors that are cross-sensitive to one or more gases can be combi...  
WO/2008/115843A3
A method for simultaneously measuring one or more properties (e.g. temperature, concentration of NOx and ammonia, etc) in an exhaust gas mixture. Signals from one or more sensors that are cross-sensitive to one or more gases can be combi...  
WO/2008/107598A1
The invention relates to an electrostatic filter device of the type including at least one basic filtration module defining, in the inside thereof, a housing (1) for the exhaust gases and having, upstream from the flow, a particle electr...  
WO/2008/108955A1
A fluid injector (46) for use in an exhaust treatment system (14) is disclosed. The fluid injector may have a nozzle portion, a heater (106) associated with the nozzle portion, and a controller (150) in communication with the heater. The...  
WO/2008/105996A1
An engine exhaust treatment system (20) is provided. The system may include a catalyst-based device (30) including a catalyst (32) configured to reduce an amount of NOx in exhaust gases produced by an engine (18), by using ammonia stored...  
WO/2008/103113A1
The invention relates to a system and an on-board-diagnosis method for an exhaust aftertreatment system (10) of an engine (12) comprising a diesel particulate filter unit (60) which encompasses a particulate filter (64) in which soot can...  
WO/2008/103111A1
The present invention relates to an exhaust gas after treatment system comprising, a diesel particulate filter unit (DPFU) provided downstream of a diesel engine, a selective catalytic reduction (SCR) arrangement provided in fluid commun...  

Matches 351 - 400 out of 2,952