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Patent Searching and Data


Matches 201 - 250 out of 2,270

Document Document Title
WO/2015/191826A1
A system and method for using feed-back information, such as, for example, system-out NOx levels, to provide for closed-loop selective catalytic reduction control. A reference generation module may adjust an ideal SCR conversion value ba...  
WO/2015/185480A1
An injection system (115) for injecting a liquid medium (120) into an exhaust gas system (100) comprises a positive displacement pump (125) for delivering the medium (120), a drive device (130) for the positive displacement pump (125), a...  
WO/2015/185471A1
A method and a corresponding device are described for determining a pump capacity of a pump of a secondary air system of an internal combustion engine. The method includes (a) measuring an actual pressure (Pist) by means of a pressure se...  
WO/2015/182812A1
According to an embodiment of the present invention, a motive power apparatus including a selective catalyst reducing system comprises: a first engine for discharging exhaust gas containing nitrogen oxide; a first exhaust passage through...  
WO/2015/177420A1
The invention relates to a method for diagnosing a catalytic converter (4) of an exhaust gas treatment system (3), said system comprising a first (5) and a second (8) oxygen sensor these being installed upstream and downstream of said ca...  
WO/2015/173150A1
The invention is directed to a method for determining the state of aging of a catalytic converter (2). The disclosed method functions in a non-contacting manner as resonances formed when the catalytic converter (2) located in a housing i...  
WO/2015/171059A1
The present invention provides a method and a system to monitor a quantity related to a particulate mass M in at least one exhaust pipe arranged downstream of at least one combustion engine. The system comprises a first determination dev...  
WO/2015/167138A1
The present invention relates to: a method for regenerating a catalyst for purifying compressed natural gas lean burn engine exhaust gas so that the catalyst for purifying compressed natural gas lean burn engine exhaust gas, which suppor...  
WO/2015/165565A1
The invention relates to a method for detecting the aging of a heterogeneous catalytic converter (5), comprising the following steps: acquiring at least one measurement signal (17, 19) in a media flow passing through the catalytic conver...  
WO/2015/164446A1
A method includes receiving, at a controller having one or more processors, one or more measured parameters, each measured parameter related to a temperature that affects a temperature of a reductant injector of an exhaust system of an e...  
WO/2015/158375A1
A method is described for monitoring the filtering capability of a particle filter arranged in the exhaust system of a motor vehicle. In a first diagnostic phase, an efficiency value of the filter is determined and compared with an expec...  
WO/2015/158376A1
A method is described for checking the functionality of a particle filter arranged in the exhaust train of a motor vehicle. This method, which evaluates changes in filter efficiency during heavy fluctuations in untreated particle emissio...  
WO/2015/153029A1
A method and related apparatuses and systems for operating an engine that provides a high level of NOX to regenerate particulate matter deposited on a particulate filter. The method includes producing NOX in response to a NOX excess capa...  
WO/2015/149912A1
The invention relates to a method for operating a drive device that, for purifying of exhaust gas, comprises at least one catalytic converter having an oxygen storage, wherein upstream of the catalyst a pre-catalyst molecular mass of a f...  
WO/2015/147488A1
Disclosed are a method for regenerating a diesel particulate filter, and a diesel particulate filter regenerated thereby. A method for regenerating a diesel particulate filter according to an embodiment of the present invention comprises...  
WO/2015/144175A1
The present invention relates to the use of Automatic Identification System signal monitoring for regional, national, or global naval vessel exhaust gas emission monitoring. The AIS signal emitted by an AIS transceiver/transponder compri...  
WO/2015/127949A1
The invention relates to a method for determining the aging of an oxidation catalyst (7) in an exhaust gas aftertreatment system (3) of an internal combustion engine (1), having the following steps: ascertaining a soot burn rate (31) of ...  
WO/2015/123411A1
A selective catalytic reduction (SCR) catalyst is disposed in an exhaust gas system of an internal combustion engine. A reductant injector is coupled to the exhaust gas stream at a position upstream of the SCR catalyst, and first and sec...  
WO/2015/115978A1
The present invention concerns a method in connection with the supplying of a first additive for treating an exhaust gas stream resulting from combustion in a combustion engine (101), wherein said first additive is supplied to said exhau...  
WO/2015/116145A1
Systems, methods and apparatus are disclosed for enabling an on-board diagnostic of a selective catalytic reduction catalyst under operating conditions that reduce or prevent false positive indications of a faulty catalyst. The catalyst ...  
WO/2015/110247A3
The invention relates to a method and to a motor vehicle for diagnosing an exhaust gas catalytic converter (28), which is arranged in an exhaust gas tract (20) of an internal combustion engine (12) and is suitable for converting at least...  
WO/2015/108730A1
An exhaust after-treatment system including an exhaust passage having at least a first portion and a second portion. An exhaust treatment component may be positioned within the exhaust passage between the first and second portions, and a...  
WO/2015/107412A1
A filter abnormality determination system includes: a PM sensor (8) configured to introduce a part of exhaust gas flowing in the exhaust gas passage (2) on the downstream side of a filter (4) into a sensor body and to correlate a sensor ...  
WO/2015/092225A1
The invention relates to a method which makes it possible to detect and quantify the ammonia concentration in combustion gases downstream from a system for selective catalytic reduction (11) of nitrogen oxides on the a reference effectiv...  
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...  

Matches 201 - 250 out of 2,270