Patent application number | Description | Published |
20080202102 | Device and Method For regenerating a Particulate Filter - The invention relates to a device for the regeneration, temperature loading and/or thermal management of a component, which is assigned to an exhaust gas system, of an internal combustion engine preferably of a vehicle, having, at least one injection valve, which operates preferably in a chatter mode as a function of the pressure of supplied fuel, for injecting fuel for the purpose of regeneration, temperature loading and/or thermal management into the exhaust system of the internal combustion engine. The invention is distinguished by at least one pressure control valve ( | 08-28-2008 |
20080319686 | Procedure for diagnosis of an emission treatment method and procedures to carry out same said method - A procedure specifically for the execution of a diagnosis of an emission treatment system is being introduced. The pressure of the reagent between the first and second valve and/or between the second valve and the injector valve is measured and the pressure measuring signal are the basis of the diagnosis. The first and second valve, are opened in an alternating cycle, where the opening time, and/or the period duration of the first and second valves are set in such a way that the emerging diagnostic flow volume is smaller than the measuring flow volume. The procedures pursuant to the invention thereby reduce the influence of dynamic precursors of the reagent flow in the reagent line and enables, aside from an increase in reliability of the diagnosis results, a diagnosis possibility of small leakages. | 12-25-2008 |
20090255234 | DEVICE FOR REGENERATION, TEMPERATURE LOADING, AND/OR THERMAL MANAGEMENT, ASSOCIATED INJECTION VALVE, AND METHOD - The invention relates to a device for the regeneration, temperature loading and/or thermal management of a component, assigned to an exhaust system, of an internal combustion engine. The device includes at least one injection valve which injects a fluid, in particular fuel, into the exhaust system, preferably in chatter mode, for example as a function of the pressure of the supplied fluid. The injection valve has a valve head and a valve seat which have geometries designed in such a way that a fluidic force of the supplied fluid acting on the injection valve drops continuously over a stroke of the valve head. The invention also relates to an injection valve having such valve-head and valve-seat geometries and to a corresponding method for the regeneration, temperature loading and/or thermal management of a component, assigned to an exhaust system, of an internal combustion engine. | 10-15-2009 |
20090282814 | METHOD AND DEVICE FOR CLEANING VALVES - The invention relates to a method and a device for the catalytic combustion of fuel which is metered into the exhaust manifold of an internal combustion engine by an injection valve. Preferably, an oxidation catalyst is positioned in the exhaust manifold of the internal combustion engine. The metered fuel is atomized in an exhaust gas flow by the injection valve. An end of the invention valve facing the direction of the exhaust gas flow in an exhaust pipe is continuously or intermittently heated by a heating device. Alternatively, an end of the injection valve which is thermally decoupled from the injection valve is directly heated by the exhaust gas flow. | 11-19-2009 |
20100326056 | PROCEDURE AND DEVICE FOR A SWITCHING PRESSURE CALCULATION AT A METERING VALVE - The invention relates to a procedure for a switching pressure calculation at a metering valve of a fuel metering device for metering fuel into an exhaust gas system of a combustion engine with a component that is assigned to the exhaust gas system of the combustion engine for a regeneration, for a temperature impinge and/or for a thermo management, whereby the fuel is injected before this component in streaming direction of the exhaust gas. The invention concerns furthermore a corresponding device for implementing the procedure. | 12-30-2010 |
20110047996 | EXHAUST GAS TREATMENT APPARATUS WITH IMPROVED PRESSURE PULSE DAMPING - The invention relates to an apparatus for metering at least one medium for reducing pollutant levels in an exhaust system, in particular for the introduction of fuel into an exhaust tract for regenerating an element for reducing pollutant levels in the exhaust tract. The apparatus includes at least one injection valve, in particular, a pressure-regulated injection valve and at least one supply line for supplying the pollutant-reducing medium to the injection valve. At least one pressure damper is provided in the supply line upstream of the injection valve. | 03-03-2011 |
20110138792 | DEVICE FOR METERING FUEL - The invention relates to a metering device for fuel upstream of an oxidation catalytic converter in the exhaust gas system of an internal combustion engine. A closing valve and/or a metering valve and an injection valve are integrated downstream of a supply device for fuel into a line leading to a metering unit. A return having a first overflow valve branches off upstream of the metering unit. A further return having a second overflow valve influencing a mean pressure level of the metering unit is disposed between the closing valve and the metering valve. | 06-16-2011 |
20120110990 | MOUNTING UNIT FOR FASTENING AN INJECTION MEMBER TO AN EXHAUST GAS TRACT - A mounting unit ( | 05-10-2012 |
20120131910 | INJECTION SYSTEM FOR INJECTING FLUID INTO AN EXHAUST TRACT - The invention relates to an injection system for injecting a fluid into a filter provided in an exhaust system, comprising at least two modules and at least one pressure compensation volume ( | 05-31-2012 |