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| Number | Title | Issue Date |
| 7673443 | Method and a device for providing lambda control in an internal combustion engine Method for lambda control in an internal combustion engine with a catalytic converter in an exhaust tract and at least one lambda probe mounted inside the catalytic converter. With this arrangement of the upstream probe there are signal delays which slow down the la... | 03/09/2010 |
| 7654076 | System for controlling absorber regeneration A system, method, and software for controlling regeneration and desulfurization of a NOx adsorber is disclosed. An electronic control unit is connected with an engine for selectively controlling operation of the engine between a rich operating mode and a ... | 02/02/2010 |
| 7647764 | Method and device for determining a temperature variable A device and method for determining a temperature variable, in particular a temperature variable that characterizes the condition of an exhaust-gas treatment system of a combustion engine, are described. The temperature is specified on the basis of variables that ch... | 01/19/2010 |
| 7631488 | Oxidation catalyst for removing fine soot particulates from exhaust gases and method of removing fine soot particulates using the same Disclosed herein is an oxidation catalyst for use in removing fine soot particulates from exhaust gases of diesel engines, incinerators, boilers or other combustion devices, and to a method of removing fine soot particulates using the oxidation catalyst. The oxidati... | 12/15/2009 |
| 7621120 | Hybrid technology for lean NOx trap and particulate filter regeneration control A method for the use of hybrid technology to control lean NOx trap (LNT) and particulate filter regenerations using an electric motor wherein for the LNT (a) the electric motor is adapted to absorb torque excursions of the engine during regeneration of the LNT, (b) ... | 11/24/2009 |
| 7603845 | Method and device for managing the operation of a nitrogen oxide trap, and diagnosing its ageing condition The invention concerns a method which consists in arranging a oxygen probe (21) of an exhaust pipe and observing that substantial unique increase of said representative signal towards a threshold value S1 calculated from the start of the bleeding of th... | 10/20/2009 |
| 7584603 | Method and system for regenerating NOadsorbers and/or particulate filters An active system for regenerating a NOx adsorber and a particulate filter, the system includes a fuel source, a reformer for generating hydrogen and carbon monoxide in fluid communication with the fuel source, a first valve, a second valve, and a third valve in flui... | 09/08/2009 |
| 7530220 | Control strategy for reducing fuel consumption penalty due to NOx adsorber regeneration A method for enabling initiation of regeneration of a NOx adsorber catalyst. While the engine is operating to propel the vehicle, data indicative of NOx adsorption efficiency of the NOx adsorber catalyst, data indicative of temperature of exhaust gas passing through... | 05/12/2009 |
| 7484357 | Apparatus, system, and method for determining and implementing estimate reliability An apparatus, system, and method are disclosed for determining the reliability of an estimate such as particulate accumulation on a diesel particulate filter, weighing the estimate according to a function of its reliability, weighing a prediction of particulate accu... | 02/03/2009 |
| 7481039 | Engine system and method for efficient emission control device purging Various systems and methods are disclosed for carrying out combustion in a fuel-cut operation in some or all of the engine cylinders of a vehicle. Further, various subsystems are considered, such as fuel vapor purging, air-fuel ratio control, engine torque control, ... | 01/27/2009 |
| 7441401 | Control apparatus for internal combustion engine The present invention provides a control apparatus for an internal combustion engine which can make a determination on fuel property with high accuracy without causing a cost increase. The control apparatus for the internal combustion engine includes: an intake air ... | 10/28/2008 |
| 7444235 | Post catalyst oxygen sensor diagnostic An engine exhaust sensor diagnostic system for an exhaust system including a catalyst and a post-catalyst oxygen sensor includes a first module that calculates a total integrated area based on a signal generated by the post-catalyst oxygen sensor. A second module co... | 10/28/2008 |
| 7442354 | Treatment of engine exhaust using molecular sieve SSZ-56 The present invention relates to new crystalline molecular sieve SSZ-56 prepared using a N,N-diethyl-2-methyldecahydroquinolinium cation as a structure-directing agent and its use in minimizing cold start emissions from engines. ... | 10/28/2008 |
| 7441400 | Exhaust system for an internal combustion engine An exhaust system for an internal combustion engine is disclosed. The exhaust system includes at least one main exhaust path connected to at least one cylinder, an exhaust recirculation path that is branched out from the main exhaust path so that part of exhaust gas... | 10/28/2008 |
| 7441403 | Method and system for determining temperature set points in systems having particulate filters with regeneration capabilities Method, system, and controller for determining a temperature set point for use in controlling regeneration of a particulate filter. The method, system, and controller being applicable in systems having an engine which emits exhaust gases having particulates which ar... | 10/28/2008 |
| 7438067 | Method of controlling engine using heated exhaust gas sensor A method of controlling an internal combustion engine system. The method comprises supplying a first amount of electric energy to heat to an upstream sensor located in an exhaust gas passage upstream of an exhaust gas after-treatment device and adjusting an air-fuel... | 10/21/2008 |
| 7434387 | Integrated DPF-reformer A method of operating a power generation system involves operating a diesel engine to produce exhaust that is passed first through a combined DPF-fuel reformer and then a LNT. In response to the control signal to regenerate the LNT, fuel is injected into the exhaust... | 10/14/2008 |
| 7434389 | Engine system and method of providing power therein An engine system includes an internal combustion engine having an exhaust system, and an air supply passage connecting therewith. The engine system includes an auxiliary regeneration device coupled with the exhaust system, and an auxiliary power turbine coupled with... | 10/14/2008 |
| 7434388 | Method and system for regeneration of a particulate filter Method, system, and controller for regeneration a particulate filter as a function of fuels emitted with exhaust gases from an engine to an oxidation catalyst. The method, system, and controller being applicable in systems having an engine which emits exhaust gases ... | 10/14/2008 |
| 7430857 | Emissions control A cost-effective solution to remove particulates from diesel, especially light-duty diesel engines incorporates an oxidation catalyst (2) effective to convert NO in the exhaust from the engine to NO2 and a particulate trap (4) which traps no... | 10/07/2008 |
| 7430854 | Air fuel ratio controller for internal combustion engine for stopping calculation of model parameters when engine is in lean operation An air fuel ratio controller for an internal combustion engine includes an exhaust gas sensor, an identifier and a control unit. The exhaust gas sensor detects oxygen concentration of exhaust gas. The identifier calculates model parameters for a model of a controlle... | 10/07/2008 |
| 7428809 | Method for operating an internal combustion engine and a device for carrying out the method A method for operating an internal combustion engine; in the exhaust area of this engine there is at least one catalytic converter and downstream from the catalytic converter there is an NOx sensor. A device for carrying out this method is also provided. The NOx sen... | 09/30/2008 |
| 7428810 | System for increasing efficiency of an SCR catalyst A power source has at least one combustion chamber, an exhaust system fluidly connected to the at least one combustion chamber and configured to receive an exhaust-gas stream, and a fuel source configured to supply fuel to the at least one combustion chamber. The po... | 09/30/2008 |
| 7426825 | Method and apparatus for urea injection in an exhaust aftertreatment system An exhaust aftertreatment system and control system is provided, including a urea injecting device, a selective catalyst reduction device, and, a sensing device operative to monitor a forward portion of the selective catalyst reduction device. The sensing device can... | 09/23/2008 |
| 7424801 | System for diagnosing deterioration of catalyst A diagnostic system in which the accuracy of the diagnosis of the deterioration state of a catalyst in a catalytic converter for cleaning the exhaust gas of an internal combustion engine is enhanced without incurring a rise in cost. The temperature of the catalyst i... | 09/16/2008 |
| 7421839 | Exhaust emission control device Attained is a heat generative exhaust emission control device with less electric power consumption and with no harmful gas discharged to atmosphere. A porous filter body 7 for capturing particulates in exhaust gas 2 through passing of the exhaus... | 09/09/2008 |
| 7421838 | Diesel engine exhaust gas after-treatment device A diesel engine exhaust gas after-treatment device comprising a first temperature sensor that detects the temperature either upstream or downstream from a filter as a first temperature and detects the filter's other temperature as a second temperature, and a microco... | 09/09/2008 |
| 7421837 | Control method for an exhaust gas purification system and an exhaust gas purification system In an exhaust gas purification system with a continuous regeneration type DPF device, when a collecting quantity (ΔPm) of PM exceeds a predetermined judgment collecting quantity (ΔPm0), a number-of-regeneration-times coefficient (Rc) serving as an index of ... | 09/09/2008 |
| 7421836 | Air/fuel ratio validation for lean burn A multi-cylinder group engine system operable in at least a first mode and a second mode, where in the first mode a first and second cylinder group combust air and fuel, and where in the second mode at least one of the first and second cylinder group combusts air an... | 09/09/2008 |
| 7418816 | Exhaust gas aftertreatment systems A method is presented for determining an amount of reductant stored in the catalyst by intrusively desorbing a portion of reductant and monitoring the response of a reductant sensor to the desorbed portion. The desorbtion can be performed at vehicle start-up to dete... | 09/02/2008 |
| 7415819 | Method and system to automatically drain and dispose of accumulated water from water/fuel separators in diesel A method and system are provided for removing water/fuel mixture from a water/fuel separator. The method injects the water/fuel mixture is injected into an exhaust aftertreatment device where the fuel portion of such mixture is burned and converted into water and ca... | 08/26/2008 |
| 7415818 | Control device of internal combustion engine A control device of an internal combustion engine is capable of controlling an air-fuel ratio to be lean based on an activity of oxygen occlusion properties to provide improved three-way catalytic performance. The control device comprises: a three-way catalyst dispo... | 08/26/2008 |
| 7412965 | Exhaust control system for an internal combustion engine An exhaust control system for an internal combustion engine having a plurality of actuators wherein each actuator controls a predetermined engine parameter. A plurality of sensors are also associated with the engine and each sensor provides an output representative ... | 08/19/2008 |
| 7412820 | Air-fuel ratio control system for internal combustion engine An air-fuel ratio control system for an internal combustion engine having a catalyst provided in an exhaust system of the engine for purifying exhaust gases and a first oxygen concentration sensor disposed upstream of the catalyst is disclosed. The air-fuel ratio co... | 08/19/2008 |
| 7412822 | Regeneration control for diesel particulate filter for treating diesel engine exhaust A method and system for controlling exhaust gas temperature at a diesel particulate filter during regeneration. The temperature rise is controlled at a rate that will prevent harm to the filter caused by high temperatures and rapid increases. ... | 08/19/2008 |
| 7413720 | Catalyst and method for reduction of nitrogen oxides A Selective Catalytic Reduction (SCR) catalyst was prepared by slurry coating ZSM-5 zeolite onto a cordierite monolith, then subliming an iron salt onto the zeolite, calcining the monolith, and then dipping the monolith either into an aqueous solution of manganese n... | 08/19/2008 |
| 7409821 | Catalytic converter degradation determining system A catalytic converter degradation determining system is configured to accurately determine if a NOx trapping catalytic converter is degraded. The system is configured to detect or estimate the temperature of a NOx trapping catalytic converter and sets a pre-degradat... | 08/12/2008 |
| 7409247 | Method and system for estimating a quantity of particles emitted in the exhaust gas of a diesel engine for a motor vehicle The inventive system for estimating quantities of pollution compounds emitted in the exhaust gas of a diesel engine for a motor vehicle comprises means for regenerating a solid particle filter and an electronic control unit which manages the engine operation and is ... | 08/05/2008 |
| 7404291 | Exhaust gas purifying apparatus for internal combustion engine An exhaust gas purifying apparatus for an internal combustion engine, including a filter provided in an exhaust system of the engine for trapping particulates in exhaust gases, and a pressure difference sensor for detecting a pressure difference between an upstream ... | 07/29/2008 |
| 7401462 | Control strategy for lean NOx trap regeneration A method for controlling regeneration of a lean NOx trap includes estimating an accumulated NOx in the lean NOx trap; determining whether the estimated NOx exceeds a first threshold value or a second threshold value; estimating the temperature of the lean NOx trap; ... | 07/22/2008 |