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Patent Searching and Data


Matches 251 - 300 out of 2,337

Document Document Title
WO/2015/091630A1
The exhaust gas post-treatment system has at least one reduction catalytic converter, one reducing agent reservoir container, one reducing agent pump, one metering device, one feed line leading to the metering device, and one electric he...  
WO/2015/090342A1
The invention relates to a system for determining a parameter indicative of an amount of a reducing agent in a selective catalytic reduction (SCR) module (10) of a vehicle (1), the system comprising: the SCR module (10) having at least o...  
WO/2015/082805A1
The invention relates to a method for optimizing the detection of a defective catalytic converter (19) of a combustion engine (1) that no longer meets pollution-reduction standards, such that beyond a level of ageing of the catalytic con...  
WO/2015/075517A1
An exhaust gas control apparatus for an engine, the exhaust gas control apparatus includes an addition valve for adding a reducing agent to an exhaust passage, a NOx purification catalyst, and an electronic control unit. The electronic c...  
WO/2015/077221A1
An exhaust aftertreatment system may include a tank, an injector, a supply conduit, a pump, a pressure sensor, and a control module. The tank may contain a volume of a fluid. The injector may be configured to inject the fluid into a stre...  
WO/2015/074928A1
The invention relates to a method and to a device, in particular a control and evaluating unit, for operating a particle sensor (20) for determining a particle content in a gas flow, wherein the particle sensor (20) has, on the surface o...  
WO/2015/077359A1
Various methods and arrangements for controlling catalytic converter temperature are described. In one aspect, an engine controller includes a catalytic monitor and a firing timing determination unit. The catalytic monitor obtains data r...  
WO/2015/073554A2
A diesel engine fluid reservoir system having a reservoir of diesel exhaust fluid in thermal communication with a heating element, a first conduit for the flow of engine coolant fluid to the heating element, a temperature sensor disposed...  
WO/2015/070950A1
The invention relates to a method for operating an exhaust gas purification system (1) for purifying an exhaust gas of an internal combustion engine, according to which, in a diagnostic operation, in directly successive operating phases ...  
WO/2015/067159A1
Disclosed is a compressed air-driven metering device of a tail gas clean-up post-treatment system of an internal-combustion engine. The compressed air-driven metering device comprises an air control valve (100), a first liquid cavity (20...  
WO/2015/059374A1
The invention relates to a method for diagnosing (200) a nitrogen oxide trap suitable for breaking down, during a regeneration step (110, 130), the nitrogen oxides stored in the trap by reaction with reducing agents, which includes: a st...  
WO/2015/059375A1
The invention relates to a method for diagnosing (200) a nitrogen oxide trap associated with an internal combustion engine (4), said trap being suitable for breaking down the nitrogen oxides stored inside of same by reaction with reducin...  
WO/2015/059060A1
The invention relates to a method for monitoring a particle filter in the exhaust gas duct of an internal combustion engine powered by gasoline. The invention further relates to a device for carrying out the method. According to the inve...  
WO/2015/056004A1
An on-board diagnostics system for an exhaust system of an internal combustion engine is disclosed. The system comprises a catalyzed substrate having a catalyzed region and an uncatalyzed region, a first sensor, and a second sensor. The ...  
WO/2015/050653A1
System, apparatus, and methods are disclosed for enabling a quality diagnostic of an aqueous urea solution (AUS) of an exhaust system when the AUS is outgassed. Systems, apparatus, and methods are also disclosed for disabling an output o...  
WO/2015/045378A1
In a control apparatus for an internal combustion engine in which processing of regenerating the NOx storage capacity of an NSR catalyst is carried out in accompany with processing of diagnosing an abnormality in an exhaust gas purificat...  
WO/2015/040300A1
The invention relates to a method for diagnosing the absence of a particle filter (4) in an exhaust line (2) of an internal combustion engine (1) of a vehicle, said exhaust line being provided with a catalyst (3) and a particle filter (4...  
WO/2015/042217A1
An aftertreatment system for treating exhaust gas discharged from a combustion engine may include a particulate filter, a reductant-injection system, an ammonia sensor and a control module. The particulate filter may be configured to fil...  
WO/2015/029611A1
In an internal combustion engine, a hydrocarbon feed valve (15) and an exhaust purification catalyst (13) are arranged in an engine exhaust passage. When releasing the stored NOX from the exhaust purification catalyst (13), usually combu...  
WO/2015/023477A1
A method of controlling an aftertreatment system having a SCR catalyst and communicating with an engine electronic control module (ECM) is provided. The method may receive a plurality of system values corresponding to NH3 and NOx emissio...  
WO/2015/011541A1
An exhaust emission control system that estimates a PM accumulation amount in a DPF and executes PM burning control for burning PM accumulated in the DPF when an estimated PM accumulation amount has reached a preset threshold includes a ...  
WO/2015/002597A1
A method and a system for analysis of a function in at least one system related to a combustion engine 101 in a vehicle 100 is described. The system comprises an engine load device, which is arranged for the build-up of an engine load L ...  
WO/2015/002591A1
The invention pertains to a method to detect at least one defective NOx sensor (255; 265) arranged in an exhaust pipe (290) from an engine (206), comprising the steps: - to continuously determine an NOx level in the exhausts from said en...  
WO/2015/001221A1
The invention relates to a system (60) for regenerating a passive NOx adsorber (PNA) material (22) arranged in an exhaust line (80) upstream of a selective catalytic reduction (SCR) catalytic converter (30), said PNA material forming wit...  
WO/2015/002590A1
The present invention provides a method and a system for the use of an actually available catalytic performance ηact for an exhaust treatment device comprising at least one substrate with catalytic coating. A physical catalytic performa...  
WO/2015/000783A1
A method and means of determining the quality of a fluid reductant used in selective catalytic reduction to reduce NOx emissions from an internal combustion engine. Short and long term average of NOx conversion efficiency are compared wi...  
WO/2014/207340A1
A system and method for diagnosing the selective catalytic reduction system of a motor vehicle. A system for diagnosing the selective catalytic reduction system of a motor vehicle provided with an internal combustion engine (1) connected...  
WO/2014/205168A1
A supercharger exhaust bypass system comprises a supercharger comprising an inlet and outlet, a bypass valve connected to the supercharger outlet, a first intercooler connected to receive compressed air from the outlet of the supercharge...  
WO/2014/202509A1
The invention relates to a method for checking the efficacy of an exhaust gas after-treatment device (9), especially of a catalyst, for an internal combustion engine, exhaust gas generated by a donor internal combustion engine (2) flowin...  
WO/2014/198386A1
The invention relates to a method and a device for operating an exhaust gas aftertreatment (300), wherein a diesel particulate filter (DPF) is regenerated during the operation, in particular passively regenerated, wherein a corrected dif...  
WO/2014/200413A1
Method to detect a flow blockage (205) in a fluid system (201), which flow blockage is arranged between a first fluid conduit (203) and a second fluid conduit (204) connected to the first fluid conduit via the flow blockage (205). The me...  
WO/2014/191270A1
The invention relates to a particle sensor (20) for determining a particle content in a gas flow, wherein the particle sensor (20) has, on the surface thereof, at least two interlocking interdigital IDE electrodes (23) and a heating elem...  
WO/2014/189441A1
The invention relates to a method to determine the function of a sensor (235; 245; 255; 265) arranged to determine the level of a component in the exhaust gases from an engine (206), comprising the following steps: - to expose (s420; s45...  
WO/2014/187521A1
The invention relates to a method for operating a driving system (1) having an internal combustion engine (2) and an exhaust gas purifying device (9) through which exhaust gas from the internal combustion engine (2) flows in order to be ...  
WO/2014/182827A1
An exhaust treatment fluid system includes a tank housing for storing an exhaust treatment fluid. A suction tube includes a first end positioned within the housing. A first sensor is positioned within the tank housing for determining at ...  
WO/2014/179641A1
A power generating set includes an engine operable in response to a flow of fuel to produce a flow of exhaust gas. A generator is coupled to the engine and is operable in response to operation of the engine to produce a total electrical ...  
WO/2014/135951A8
An exhaust gas control system of an internal combustion engine includes a urea water tank, a heater, a purifying device, a notification device, and a controller. The controller is configured to determine whether frozen urea water is left...  
WO/2014/177785A1
Device for controlling the operating status of a member (15) that treats gaseous effluent from an exhaust line (13) of an internal combustion engine (1) comprising a control unit (30) including a module (31) that verifies the operating c...  
WO/2014/171878A1
The invention relates to a method for troubleshooting in an SCR system which comprises a dosing unit (250) for dosing of reducing agent into an engine's exhaust duct (290) upstream of an SCR catalytic converter (270) for reduction of NOx...  
WO/2014/159041A1
A method for monitoring an exhaust after-treatment system that doses an exhaust treatment fluid held from a tank into an exhaust stream. The method includes determining a first temperature of the exhaust treatment fluid in the tank using...  
WO/2014/150005A1
An apparatus includes an engine output module that determines an engine output power parameter for an engine. The apparatus includes an output power threshold module that determines if the engine output power parameter is below an output...  
WO/2014/141088A1
The present invention relates to an apparatus and method for testing the catalytic efficiency of exhaust components, particularly exhaust components used in heavy- duty diesel engine exhaust systems. The exhaust component typically has a...  
WO/2014/135951A1
An exhaust gas control system of an internal combustion engine includes a urea water tank, a heater, a purifying device, a notification device, and a controller. The controller is configured to determine whether frozen urea water is left...  
WO/2014/134273A1
A system for diagnosing and/or determining the performance of a reductant delivery system may include determining a flow rate offset value for the reductant delivery system. A reduced reductant flow rate may be determined for a reductant...  
WO/2014/131961A1
The invention relates to a detection method in which, in the time interval between two regenerations, a list is made of the number of points for measuring the amount of reducing agent estimated outside of a range around the target amount...  
WO/2014/126527A1
The invention concerns a method for troubleshooting an SCR system comprising a dosing unit (250) for dosing reducing agent into the exhaust duct (290) of an engine upstream of an SCR catalytic converter (270) to reduce the NOx level in a...  
WO/2014/120070A1
A method and a system are presented for determining and utilizing pressure in an exhaust gas pipe connected to a combustion engine. A first gas sensor is configured to provide a first measurement value y1 corresponding to a first concent...  
WO/2014/118452A1
The invention relates to a method for diagnosing a particle filter by means of a soot capturing device, said method being based on the direct processing of the temporal signal supplied by the soot capturing device (CAP) and the use of va...  
WO/2014/121004A1
An apparatus and system for monitoring and communicating emissions data for a diesel engine. An exhaust gas analyzer uses infrared light to measure the quantity of trace gases and particulates in an exhaust gas outlet from a diesel engin...  
WO/2014/095215A1
The invention relates to a method for diagnosing an exhaust gas catalytic converter (28) arranged in an exhaust gas system (20) of an internal combustion engine (12) for the catalytic conversion of at least one exhaust gas component from...  

Matches 251 - 300 out of 2,337