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8701390 Adaptive control strategy  
A vehicle has an exhaust aftertreatment system including an LNT. The vehicle operates through a series of ignition cycles, deNOX cycles, and deSOX cycles. DeNOX operations begin when the LNT...
8701395 Reformer  
An exhaust gas treating system for a gasoline engine, comprising an exhaust gas manifold comprising an annular reforming catalyst mounted within an annular housing and fuel supply means in direct...
8695329 DeNox of diesel engine exhaust gases using a temperature-controlled precatalyst for providing NO2 in accordance with the requirements  
The adherence to future legally obligatory exhaust gas limit values for diesel vehicles in Europe, North America and Japan requires not only the removal of particles but also effective removal of...
8695331 Procedure to diagnose a particle filter and device to implement the procedure  
A procedure to diagnose a particle filter disposed in an exhaust gas area of an internal combustion engine as well as a device to implement the procedure is proposed. Provision is made to ascertain...
8689544 Emission control system for a vehicle  
In accordance with an exemplary embodiment, an emission control system and method is provided for a vehicle. The system comprises a reductant reservoir having an intake pipe for receiving reductant...
8683781 Method for controlling an exhaust-gas aftertreatment device of a hybrid drive, and hybrid drive  
A method for controlling an exhaust gas aftertreatment device of a vehicle hybrid drive is provided. The method comprises operating the hybrid drive only by a combustion engine, only by a...
8683785 Method for regenerating an open particle separator and motor vehicle having at least one open particle separator  
A method for regenerating an open particle separator includes at least determining at least one parameter, as a characteristic variable of a regeneration capability of the open particle separator....
8688360 Method for operating a fording-capable motor vehicle, and fording-capable motor vehicle  
A motor vehicle having an internal combustion engine, a differential pressure sensor or two pressure sensors for detecting a pressure difference, which may be in an exhaust tract of the internal...
8683791 Method and system for homogenizing exhaust from an engine  
The present invention relates to a method and system for homogenizing exhaust from an engine. In one embodiment, the present invention includes an automobile. The automobile can include a fuel...
8678813 Method for producing a stream of hot combustion exhaust gases at a settable temperature, apparatus for carrying out the method and use of the combustion exhaust gases for the targeted ageing of catalysts  
A stream of exhaust gases from the combustion of hydrocarbon-containing fuels with a variable temperature can be produced by dividing the exhaust gases into two separate part-streams, cooling one...
8679434 Catalytic articles, systems and methods for the oxidation of nitric oxide  
Described is a catalytic article for the treatment of lean burn engine exhaust gas. The catalytic article comprises a honeycomb substrate having disposed thereon a washcoat containing one or more...
8677734 Method of producing ammonia effective to control aftertreatment conditions of NOx emissions  
A method for reducing NOx molecules in an exhaust flow within an exhaust aftertreatment system of an internal combustion engine includes storing NOx from the exhaust flow on a NOx storage component...
8671666 System and apparatus for enhancing exhaust aftertreatment startup emissions control  
An aftertreatment system including a method which provides a selective catalytic reduction (SCR) catalyst disposed in an exhaust stream of an engine; determines that an ammonia pre-load condition...
8671663 Method and metering system for reducing pollutants in motor vehicle exhaust gases  
A method of metering a fluid, pollutant-reducing medium, in particular an aqueous urea solution, into a motor vehicle exhaust system is proposed, in which the fluid medium is delivered to a nozzle...
8671662 Exhaust gas purifying system and exhaust gas purifying method using the same  
An exhaust gas purifying system (100) includes: a NOx purifying catalyst (34) that is disposed in an exhaust gas flow path (3) to purify nitrogen oxide; and an HC generator (33, 133) that is...
8671661 Exhaust gas purification method and exhaust gas purification system  
An exhaust gas purification method, and system. In order from an upstream side of an engine exhaust passage there are provided, a NOx occlusion-reduction catalyst, a hydrocarbon (“HC”) ads...
8672082 Construction machine  
A urea water tank (23) is arranged in a cab (10) at which an operator boards, thereby making it possible to arrange urea water under a preferred temperature environment for preventing freeze and...
8667779 Systems and methods for an exhaust gas treatment system  
Various systems and methods are provided for an exhaust gas treatment system. In one example, a system includes an exhaust gas treatment device and a wire wrapped around an exterior circumference...
8667778 Catalyst overheat prevention apparatus  
A catalyst overheat prevention apparatus has a temperature obtaining portion that estimates a convergence temperature of a catalyst provided in the exhaust system of an internal combustion engine...
8661797 NOx adsorber regeneration system and method  
An exhaust gas after treatment system for an engine comprises an oxidation catalyst NOx adsorber wherein an oxidation catalyst compound and a NOx adsorber compound are disposed. A fuel injector is...
8662883 Gas combustion apparatus  
Apparatus is described for combusting exhaust gases output from a plurality of process chambers. The apparatus comprises a plurality of exhaust gas combustion nozzles (22) connected to a combustion...
8661788 Exhaust aftertreatment systems that include an ammonia-SCR catalyst promoted with an oxygen storage material  
A low-oxygen content exhaust flow produced by an engine that is combusting, on average, a stoichiometric mixture of air and fuel generally contains various unwanted gaseous emissions. The exhaust...
8661787 Lean kick catalyst monitoring system  
A method and system for monitoring a three-way catalyst cooled by a coolant and treating internal combustion engine exhaust by oxidizing HC and CO and reducing NOx is provided to prevent false-fail...
8661883 Secondary air system diagnostic test  
A diagnostic test for a secondary air system comprising an air pump, a first mass air flow sensor connected to the air pump and a first check valve connected to the first mass air flow sensor. A...
8661791 Systems and methods for controlling regeneration of nitrogen oxide adsorbers  
An exhaust treatment system includes a nitrogen oxide (NOx) monitoring module and a regeneration control module. The NOx monitoring module monitors first and second NOx levels in an exhaust stream...
8661784 Exhaust gas aftertreatment  
A method to improve NOx reduction in diesel engine exhausts by selective catalytic reduction using reductants comprising hydrocarbons, comprising passing the exhaust gases through a series of...
8661785 System and method for liquid reductant injection  
A method for operating a liquid reductant injection system is provided. The method includes storing a reductant mixture of ethanol, water, and urea; drawing the stored mixture into an electrically...
8656703 Exhaust purification device for engine  
The present invention provides an exhaust purification device for an engine, comprising: an ammonia supply system including an ammonia supply injector for supplying ammonia to a combustion chamber...
8650857 Apparatus and method for onboard performance monitoring of exhaust gas particulate filter  
The present invention is directed to a gas particulate treatment system and may include a gas filter and a gas filter performance monitor downstream of the gas filter. The gas filter performance...
8652410 Control method and arrangement for selective catalytic reduction  
A method for controlling a selective catalytic reduction system (SCR) exploiting a set of predetermined trigger events and a set point for the NOx concentration, and an arrangement for SCR. At the...
8650862 Agricultural machine  
An agricultural machine has an internal combustion engine, a particulate filter disposed in an exhaust-system branch of the internal combustion engine, and an engine control unit designed to...
8650861 Control of the regeneration of a particulate filter  
A method for inducing the regeneration of a particulate filter associated with an exhaust gas emitting engine while being operated in a vehicle in variable driving conditions. The method includes...
RE44753 Procedure and device to heat a reducing agent generation system  
The invention concerns a procedure to heat a reducing agent generation system of an exhaust gas aftertreatment system of an internal combustion engine by combustion of fuel, whereby the reducing...
8646252 Preventing catalyst damage during misfire event  
A control system includes a temperature determination module and a catalyst protection module. The temperature determination module determines a temperature of exhaust gas based on a resistance of...
8646257 Method for estimating soot loading in a diesel particulate filter, and engine and aftertreatment system  
A method for estimating soot loading of a diesel particulate filter includes establishing a soot loading model for estimating soot loading of a nominal diesel particulate filter, adjusting the soot...
8646253 Procedure and device for controlling an exhaust gas purification system  
A procedure for controlling an exhaust gas purification system of a combustion engine, consisting of one or several catalytic converters for converting and/or storing at least one exhaust gas...
8647596 Systems and methods for managing emissions from an engine of a vehicle  
Disclosed embodiments include methods of removing carbon dioxide from combustion gas from an engine of a vehicle, systems for removing carbon dioxide from combustion gas from an engine of a...
8641791 Method of supplying iron to the particulate trap of a diesel engine exhaust  
The invention concerns a method for supplying iron, via the fuel, to the particulate trap of a diesel engine exhaust in a form suitable for promoting trap regeneration. The method involves the...
8640440 Removal of particulates from the exhaust gas of internal combustion engines operated with a predominantly stoichiometric air/fuel mixture  
Disclosed herein is a catalytically active particulate filter, an exhaust gas cleaning system and a process for cleaning the exhaust gases of predominantly stoichiometrically operated internal...
8640448 Transient compensation control of an SCR aftertreatment system  
A system includes an internal combustion engine, an exhaust conduit fluidly coupled to the internal combustion engine and an SCR catalyst, and a reductant doser operationally coupled to the exhaust...
8640445 Multi-leg exhaust after-treatment system and method  
This disclosure provides an exhaust flow detection and variable dosing system and method for treating exhaust flow from an engine. The system includes first and second exhaust flow legs, a cross...
8635854 Reductant injection control system  
A control system for reducing nitrogen oxides in an engine exhaust of an engine includes an emissions catalyst having an inlet adapted to receive an exhaust from the engine. A reductant tank stores...
8635857 Diesel particulate filter overstress mitigation  
Methods and systems for reducing overstress of a DPF are provided herein. One example of such a method is based on a radial temperature gradient near the exit face of the diesel particulate filter....
8635853 Exhaust reduction system having oxygen and temperature control  
An exhaust system for use with an engine is disclosed. The exhaust system may have a first treatment device situated to receive a flow of exhaust and convert a first constituent of the exhaust to a...
8635855 Exhaust gas treatment system including a lean NOx trap and two-way catalyst and method of using the same  
An exhaust gas treatment system for a diesel engine is disclosed. The exhaust gas treatment system includes a lean NOX trap (LNT) in fluid communication with a diesel engine to receive an exhaust...
8637426 Zoned catalysts for diesel applications  
An oxidation catalyst composite, methods and systems for the treatment of exhaust gas emissions from an advanced combustion engine, such as the oxidation of unburned hydrocarbons (HC), and carbon...
8635865 Diesel particulate filter including a heat exchanger  
An after treatment device includes a housing defining an inlet and an outlet. The after treatment device also includes a core positioned substantially within the housing. The core is configured to...
8636970 Exhaust purification device and exhaust purification method for diesel engine  
An exhaust purification device and an exhaust purification method that utilizes this exhaust purification device enable effective utilization of exhaust gas heat and allow reduction in the size of...
8635852 Exhaust treatment system for internal combustion engine  
Methods and systems are provided for operating an engine including an exhaust treatment system coupled to an engine exhaust, the exhaust treatment system further coupled to an engine intake via an...
8635859 System and method for determining a maximum dose rate of reductant  
An exhaust gas treatment system for an internal combustion engine is provided, having an exhaust gas conduit, a reductant source, a temperature sensor, an intake mass air flow sensor, and a control...