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8940259 Catalysed soot filter  
A catalyzed soot filter for a diesel engine comprises a wall flow substrate having a substrate axial length, wherein surfaces of both the internal walls of a plurality of inlet and a plurality of...
8938953 Exhaust gas purifying method  
A method of purifying an exhaust gas, includes: disposing a NOx trapping catalyst in an exhaust pipe of an internal combustion engine, the NOx trapping catalyst including: a metal substrate...
8940260 Supplemental ammonia storage and delivery system  
An exhaust after-treatment system is described. Generally speaking, the system includes separate primary and secondary NOx reducing systems for delivering reductant (e.g. urea and ammonia) to an...
8936760 Exhaust gas purification apparatus for engine  
An exhaust gas purification apparatus is provided with: a first soot-accumulation calculation unit 49 which calculates a first soot accumulation amount from an operation state of the engine; a...
8935915 Ammonia storage on an SCR catalyst  
A system and method for calculating quantity of ammonia stored on an SCR catalyst at various times during an interval of time by processing certain data, including the aggregate quantity of ammonia...
8931255 Techniques for raising exhaust temperatures  
One embodiment is a unique strategy for raising exhaust temperatures which includes deactivating a first group of cylinders while maintaining a second group of cylinders in a combustion mode and...
8932871 Ozone conversion sensors for an automobile  
A system for a vehicle includes a first ozone sensor that generates a first sensor signal indicating a first amount of ozone in air flowing into a radiator. A second ozone sensor generates a second...
8931261 Apparatus, system, and method for diverting fluid  
A pump component is removed from a port of a suction-side fluid cavity of a high-pressure fluid pump. The pump component performs a pump function for the high-pressure fluid pump. A primary coupler...
8931258 Method for metering a reducing agent, method for setting up a control unit for a metering device and motor vehicle having a metering device  
A method for metering a reducing agent from a metering device to an exhaust gas treatment device includes initially determining at least one operating parameter of the metering device. An injector...
8931257 Technique for production of ammonia on demand in a three way catalyst for a passive selective catalytic reduction system  
A powertrain includes an internal combustion engine with multiple cylinders and an aftertreatment system having a selective catalytic reduction device utilizing ammonia as a reductant. An ammonia...
8925300 Zero ceria washcoat catalyst monitor  
A catalyst degradation detection method for use with a zero ceria catalyst. The method uses techniques to measure transient responses to engine control events of upstream and downstream sensors to...
8925304 Exhaust system comprising exotherm-generating catalyst  
An apparatus comprising a compression ignition engine and an exhaust system therefor comprising at least one exhaust system component for treating exhaust gas and means for generating an exotherm...
8925302 Method and system for operating an engine turbocharger  
A system and method for operating an engine turbocharger is described. In one example, the turbocharger is rotated in different directions in response to operating conditions. The system and method...
8926925 SCR catalytic converter having improved hydrocarbon resistance  
A catalyst for the selective catalytic reduction of nitrogen oxides in diesel engine exhaust gases using ammonia or a precursor compound decomposable to ammonia. The catalyst includes two...
8925299 Arrangement and method for operating an exhaust gas post-treatment device  
The invention relates to an arrangement (1) for operating an exhaust gas post-treatment device, particularly of a motor vehicle, wherein the arrangement (1) comprises a plurality of consumers...
8925298 Engine exhaust systems with secondary air injection systems  
A variety of embodiments of exhaust systems for engines including small off-road engines, and related methods of operation, are disclosed. In at least some embodiments, the exhaust system includes...
8920757 Reductant dosing control systems and methods  
Reductant dosing systems and methods for engine exhaust aftertreatment are disclosed. The opening and closing of a metering valve in the reductant dosing system is controlled in a manner that...
8920758 Method for operating an exhaust gas aftertreatment system with at least one first SCR device and at least one second SCR device  
A method for operating an exhaust gas aftertreatment system is provided that comprises at least one first SCR device and at least one second SCR device. Furthermore, a dosing device for reactant...
8919105 DPF regeneration control device, DPF regeneration control method, and DPF regeneration support system  
A DPF regeneration control device includes: a differential pressure sensor which detects a differential pressure between a front and a rear of a DPF; a DPF differential pressure setting unit which...
8919100 Method of using a regenerative brake system for heating a motor vehicle catalytic converter and powering other electrical accessories  
A method for a motor vehicle includes using a regenerative brake system that produces electric current as a result of application of said regenerative brakes and sending at least a fraction of the...
8919098 System and method for regenerating the particulate filter in a diesel engine  
In a diesel engine equipped with a system for automatic regeneration of a particulate filter, an automatic regeneration mode is inhibited in the case where there is recorded a number higher than a...
8919099 System and method for determining an ammonia generation rate in a three-way catalyst  
A system according to the principles of the present disclosure includes a rate determination module, a storage level determination module, and an air/fuel ratio control module. The rate...
8919107 Control device of diesel engine with turbocharger  
A control device of a diesel engine with a turbocharger is provided. The device includes an engine body having a cylinder, a fuel injection valve, a turbine of the turbocharger, a bypass passage...
8919097 Methods and systems for variable displacement engine control  
Methods and systems are provided for selecting a group of cylinders for selective deactivation, in a variable displacement engine system, based at least on a regeneration state of an exhaust...
8915065 Particulate filter regeneration  
In one example, a method of operating an engine having a diesel particulate filter in a vehicle, the particulate filter having a length and depth, includes performing particulate filter...
8915070 Hydrocarbon retaining and purging system for flex-fuel combustion engine  
Systems, methods, and computer readable storage media are described in which exhaust gas is routed to a hydrocarbon retaining device during starting, and purged to the engine intake manifold....
8915066 Device for evaporating a urea-water solution, method for operating the device and motor vehicle  
A device for evaporating a urea-water solution includes a delivery duct for the urea-water solution. The delivery duct extends through at least a first zone and a second zone for the introduction...
8915062 Method and apparatus for monitoring a reductant injection system in an exhaust aftertreatment system  
An internal combustion engine operating at a lean air/fuel ratio includes a reductant injection system configured to dispense reductant into an exhaust gas feedstream upstream of a selective...
8910468 Exhaust gas treatment catalyst, exhaust gas treatment method, and exhaust gas treatment apparatus  
An exhaust gas treatment catalyst for removal of one or more pollutants in an exhaust gas, the catalyst comprising: a SO3-reducing catalyst powder which removes the above-described pollutants; and...
8910466 Exhaust aftertreatment system with diagnostic delay  
An apparatus and method of controlling a vehicle aftertreatment system is provided. The aftertreatment system treats exhaust gas produced by the vehicle engine and includes a particulate filter,...
8911698 Supported catalyst for removing nitrogen oxides, method of preparing the same, and removing method of nitrogen oxides using the same  
A supported catalyst for reduction reaction of nitrogen oxides includes a support and an silver (Ag)-based compound and aluminum fluoride which are immobilized in the support. A method for...
8904769 Systems and methods using internal EGR for aftertreatment system control  
An internal combustion engine system includes: an engine with a plurality of pistons housed in respective ones of a plurality of cylinders; an air intake system to provide air to the plurality of...
8904768 Adaptive desulfation and regeneration methods for lean NOx trap  
An adaptive method is used for LNT desulfation and regeneration. The desulfation method involves adapting the amount of sulfur loading to trigger a desulfation event in accordance with the current...
8904760 Exhaust gas treatment system including an HC-SCR 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 hydrocarbon selective catalytic reduction catalyst (HC-SCR) in fluid communication with...
8904754 Control apparatus and control method for internal combustion engine  
An engine ECU diagnoses the presence or absence of abnormality during execution of the fuel cut. The engine ECU is configured to restrict the fuel cut according to the temperature of a catalyst...
8904767 Method and apparatus for cold starting an internal combustion engine  
The present invention relates to a method for achieving reduced emissions at cold start of an internal combustion engine having an exhaust gas after treatment system comprising at least one Diesel...
8899021 Reagent dosing system and method of dosing reagent  
A method of dosing a reagent into an exhaust gas stream of an internal combustion engine having an SCR catalyst, the method comprising injecting reagent from a reagent tank into the exhaust gas...
8899016 Integrated WGS/ECD exhaust treatment device for internal combustion engine having an EGR loop  
An integrated water-gas-shift (WGS) and emissions control device (ECD) catalyst for treating exhaust from an internal combustion engine. The engine is assumed to have an EGR loop, such that exhaust...
8899025 Devices, systems and methods for reducing an emission from a combustion reaction  
The invention is directed at systems and process for reducing or eliminating the emissions of one or more undesirable substances. The systems include a heat storage device an emission reduction...
8899027 Hybrid electric vehicle particulate regeneration method and system  
A method is applied to regenerate particulate matter in a particulate filter of a hybrid electric vehicle having a combination of a combustion engine and an electric motor for propelling the...
8893472 Cogeneration apparatus  
A cogeneration apparatus includes: an airtight chamber provided within an apparatus casing and constructed to prevent exhaust gas of a prime mover from flowing out therefrom; and a relief valve...
8893484 Solid SCR system and heating method for solid SCR reductant using the same  
A solid SCR system includes solid state reductant, a container storing the solid state reductant, an exhaust pipe supplying gas state reductant converted from the solid state reductant and SCR...
8894952 Method of reducing nitrogen oxide using amine compound as reductant  
A method of reducing nitrogen oxide includes a process of injecting a reductant including an amine compound and an exhaust gas including nitrogen oxide into a catalyst system including a silver...
8893470 Method for preventing clogging of urea injection nozzle of SCR system  
In a method for preventing clogging of a urea injection nozzle in an after-run operation of a selective catalytic reduction (SCR) system which supplies urea stored in a urea tank through a supply...
8893476 SCR closed loop control system  
A method for an exhaust after treatment system of an engine including at least one selective catalyst reaction (SCR), at least one clean up catalyst downstream from the SCR, a urea injector...
8893475 Control system for doser compensation in an SCR system  
A method includes determining whether selective catalytic reduction (SCR) test conditions are present, and in response to the SCR test conditions being present, operating an SCR aftertreatment...
8887496 Heat recovery system for a vehicle  
A heat recovery system for an engine is provided herein. According to one approach, the heat recovery system includes an upstream portion that circumferentially wraps around an outlet of an exhaust...
8887491 Control apparatus for an internal combustion engine  
A control apparatus for an internal combustion engine determines, based on an output value of the downstream air-fuel ratio sensor, an air-fuel ratio of a gas flowing into the catalyst that is set...
8887490 Rich burn internal combustion engine catalyst control  
A catalyst system may include a catalyst and a first sensor that detects contents of gases entering the catalyst and reports the contents of the gases entering the catalyst to an emissions control...
8887495 Ash filter, exhaust gas treatment system incorporating the same and method of using the same  
An ash filter for a reciprocating piston internal combustion engine is disclosed. The ash filter includes a substrate, such as a honeycomb monolith substrate or a plurality of particulate...