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8783012 Estimation of efficiency for aged catalysts  
Systems and methods for estimating an efficiency of a catalyst placed in an exhaust path of a combustion engine are disclosed. In one example approach, a method comprises: ageing the catalyst...
8783018 Reductant storage sensing system and method  
A catalyst supported on a substrate includes a heater embedded in a sub-region of the substrate to heat a local region of the catalyst. The amount of ammonia stored on the catalyst may be...
8784758 LNT control method for vehicle  
An LNT (Lean NOx Trap) control method for vehicles increases a purification rate of NOx while preventing an increase in the amount of slip of separated NOx at a relatively low LNT temperature. The...
8783019 Apparatus and method for onboard performance monitoring of oxidation catalyst  
An exhaust treatment system is disclosed that can diagnose the performance of an exhaust treatment oxidation catalyst in converting NO to NO2. The exhaust treatment system is fluidly coupled to an...
8783016 Hybrid HC absorber/EHC PZEV exhaust architecture  
A system may include a hydrocarbon (HC) absorber positioned in an exhaust flow path and an electrically heated catalyst (EHC) positioned in the exhaust flow path downstream of the HC absorber.
8783015 Shared EGR system and method for a dual-module engine  
In systems in which there is insufficient pressure difference between the intake and the exhaust to drive the EGR, an EGR pump is provided. In a dual-engine system, disclosed herein, the EGR...
8783011 Particulate matter detection strategy in exhaust filter  
Detecting particulate matter in an exhaust filter includes receiving data indicative of a time delay between transmission and reception of electromagnetic energy propagated through trapped...
8783021 Method for operating an internal combustion engine and apparatus for the implementation of the method  
A method for operating an internal combustion engine is proposed, in whose exhaust gas zone a particle filter is disposed, which is cyclically loaded with particles and thermally regenerated, as...
8783013 Feedforward selective catalytic reduction system for turbine engines  
A system and method of treating an exhaust flow including nitrogen oxides (NOx) in a turbine engine power generation plant is provided. The turbine engine has a selective catalytic reduction system...
8776497 Cogeneration system  
A cogeneration system includes a fuel evaporator; an internal combustion engine which outputs mechanical energy by combusting fuel evaporated by the fuel evaporator; an electric energy generator...
8776508 Passive valve assembly with negative start angle  
A passive valve assembly for a vehicle exhaust system includes an exhaust component that defines an exhaust gas flow path and a vane that is positioned within the exhaust gas flow path. The vane is...
8776502 System and method for regenerating an auxiliary power unit exhaust filter  
This disclosure relates to a method for controlling a system for regenerating a diesel particulate filter. The method includes monitoring an engine run time that has lapsed since a previous...
8776498 Air-injection system to improve effectiveness of selective catalytic reduction catalyst for gasoline engines  
Embodiments are described to improve the durability of a lean NOx aftertreatment system. According to one embodiment of the present invention an air injection system is used to inject air...
8776507 System and method for regenerating gasoline particulate filter  
A system for regenerating a particulate filter mounted on an exhaust pipe of a gasoline engine including a plurality of cylinders and an ignition device for igniting fuel and air in the cylinder, a...
8778290 Compact exhaust gas treatment systems for diesel applications  
An exhaust gas treatment system includes a SCR device and a DOC converter disposed upstream of the SCR device. A DEF dosing system includes an injector disposed upstream of the DOC converter for...
8776500 System and method for hydrocarbon adsorber regeneration in a hybrid vehicle  
A control system for a hybrid vehicle is presented. The control system can include an air/fuel ratio control module that selectively commands a rich air/fuel ratio upon starting an engine based on...
8776505 Method for predicting NOx amount and exhaust system using the same  
A method for predicting a NOx amount, may include determining a reference NOx amount according to a driving condition of an engine, primarily correcting the reference NOx amount according to an...
8776506 Method for predicting NOx amount and exhaust system using the same  
A method for predicting a NOx amount may include detecting an O2 amount in an intake air, calculating a reference O2 amount in the intake air according to a driving condition of an engine,...
8769929 Exhaust system with a NOx sensor  
Various systems and methods are described for controlling a NOx sensor coupled to an engine exhaust system in a motor vehicle. One example method comprises generating an offset of the sensor based...
8769935 System and method for monitoring reductant quality  
A method of operating an internal combustion engine having a reductant delivery and storage system in an emission control system, comprising of correlating a change in a monitored operating...
8771392 Device for particle separation in an exhaust-gas recirculation system and motor vehicle having the device  
A device for separating particles from an exhaust gas of an internal combustion engine includes at least a pot with a base having a multiplicity of openings, at least one nonwoven layer positioned...
8769927 EGR control in engine equipped with cylinders having dual exhaust valves  
A method and system for controlling recirculated exhaust gas composition and quantity provided to an internal combustion engine, which has one or more separately controllable combustion cylinders,...
8771625 Method for reducing nitric oxide in the exhaust gas flow of internal combustion engines  
A method is described for reducing nitrogen oxides in the exhaust gas flow of combustion engines, especially a motor vehicle internal combustion engine, wherein an air/fuel mixture in the...
8769940 Marine exhaust catalyst  
An internal combustion engine is coupled to an electric power generator. An exhaust manifold for the engine includes an exhaust gas conduit. A housing includes a catalyst in fluid communication...
8763366 Method for operating an internal combustion engine  
In a method for operating an air-compressing fuel-injection internal combustion engine having an exhaust gas post-treatment system with a particle filter and a nitrogen oxide reduction catalytic...
8765092 Non-stoichiometric perovskite oxide oxidation catalyst for oxidizing NO to NO2  
A non-stoichiometric perovskite oxide having the general chemical formula LaXMnOY, in which the molar ratio of lanthanum to manganese (“X”) ranges from 0.85 to 0.95, can be used in particle for...
8763369 Apparatus and method for regenerating an exhaust filter  
An exhaust gas treatment system for an internal combustion engine comprises an exhaust gas conduit in fluid communication with the internal combustion engine to conduct the exhaust gas between a...
8763373 System for purifying exhaust gas and method for controlling the same  
A system for purifying an exhaust gas may include a lean NOx trap (LNT) catalyst adapted to absorb nitrogen oxides contained in the exhaust gas at a lean atmosphere, release the absorbed nitrogen...
8763367 Engine exhaust temperature regulation  
In one example, a method of operating an engine in a vehicle is described. The method comprises delivering a first substance to a cylinder of the engine from a first injector; delivering a second...
8763364 Treatment of cold start engine exhaust  
A method of treating a cold-start engine exhaust gas stream comprising hydrocarbons and other pollutants, the method comprising: flowing the exhaust gas stream over a molecular sieve bed, the...
8756924 Hybrid catalyst convective preheating system  
A catalyst heating system includes a monitoring module, a mode selection module and an electrically heated catalyst (EHC) control module. The monitoring module monitors at least one of (i) a first...
8756915 Integrated fuel catalyst monitor  
A method is provided for monitoring an emission device coupled to an engine. In one example approach, the method comprises: following a deceleration fuel shut-off duration, indicating degradation...
8756912 Method of setting a particulate filter regeneration setpoint based on exhaust flow mass  
A method of defining a target regeneration temperature setpoint for exhaust gas upstream of a particulate filter of an exhaust gas treatment system includes as defining the regeneration temperature...
8762026 System and method for determining engine exhaust composition  
An engine assembly includes a controller and at least one data storage medium storing a database. The database includes empirically-derived NOx values based on engine equivalence ratio and engine...
8756921 Reductant delivery device  
Various diffusion apparatuses are provided for facilitating the injection of a nitrogen-oxides reductant solution, such as urea, into exhaust gas as part of a selective catalytic reduction system....
8756913 Exhaust gas sensor module  
According to one embodiment, a sensor module includes a sensor probe that has at least two arms coupled together at a central location with each of the at least two arms extending radially...
8753596 Catalyst for removing nitrogen oxides from the exhaust gas of diesel engines  
The invention relates to a catalyst for removal of nitrogen oxides from the exhaust gas of diesel engines, and to a process for reducing the level of nitrogen oxides in the exhaust gas of diesel...
8753598 Small pore molecular sieve supported copper catalysts durable against lean/rich aging for the reduction of nitrogen oxides  
A method of using a catalyst comprises exposing a catalyst to at least one reactant in a chemical process. The catalyst comprises copper and a small pore molecular sieve having a maximum ring size...
8753597 Variable exhaust gas aftertreatment system  
Systems and method for adjusting a cone angle of injected reductant directed into an engine exhaust upstream of a catalytic device based on the temperature distribution within the catalytic device...
8752368 Diagnostic method and diagnostic system for a particle filter of an internal combustion engine, in particular for a soot filter in a diesel motor vehicle  
A diagnostic method is provided for a particle filter arranged in exhaust-gas flow of an internal combustion engine. A particle concentration is detected by a particle sensor positioned downstream...
8752370 Exhaust aftertreatment system  
An exhaust aftertreatment system including a housing with two or more inlets configured to receive separate entering exhaust streams from an engine. The system may include two or more first exhaust...
8745974 Exhaust system  
An exhaust system includes an exhaust passage configured to receive exhaust from a combustion engine, a heat exchanger disposed within the exhaust passage, and a reductant supply fluidly connected...
8745979 Exhaust aftertreatment system with flow distribution  
An exhaust aftertreatment system has a side inlet flow diffuser and provides even flow exhaust distribution to an aftertreatment element.
8745971 System, method, and apparatus for controlling an aftertreatment system having a particulate filter and a rich NOx conversion device  
A system includes an internal combustion ignition engine with an exhaust gas flow, a particulate filter in the exhaust gas flow, a NOx reduction catalyst in the exhaust gas flow downstream of the...
8745967 System and method for controlling exhaust regeneration  
A system for controlling regeneration in an after-treatment component comprises a feedback module, an error module, a gain module, and a regeneration control module. The feedback module is...
8745977 Mass damper  
A mass damper method includes providing an electroactive polymer (7) and using the electroactive polymer (7) to manufacture a mass damper (6). The mass damper (6) for damping a vibrating system of...
8751187 Apparatus for calculating temperature of conductive carrier of catalyst converter  
In an apparatus, a temperature obtainer obtains, in a learning mode of the apparatus during a conductive carrier being deenergized a, value of a carrier temperature based on a physical parameter...
8745970 Ammonia slip catalyst diagnostic methods and systems  
A method of diagnosing an ammonia slip catalyst device is provided. The method includes: computing a delta between a first temperature and a second temperature; evaluating the delta based on an...
8745972 Exhaust purification system of internal combustion engine  
An exhaust purification system of an internal combustion engine includes an NOX storage reduction catalyst device which is arranged in an engine exhaust passage. The NOX storage reduction catalyst...
8739517 Vehicle-based strategy for removing urea deposits from an SCR catalyst  
A method is provided for controlling regeneration of an SCR catalyst. The method includes coordinating the regeneration duration and temperature (e.g., longer/shorter regenerations and/or...