MAN Nutzfahrzeuge AG Patent applications |
Patent application number | Title | Published |
20120302432 | Sulfur-Resistant Exhaust Gas Aftertreatment System For The Reduction Of Nitrogen Oxides - An arrangement for aftertreatment of exhaust gas for lean-burn internal combustion engines such as diesel engines and Otto engines with direct injection has a NO | 11-29-2012 |
20110132314 | CAST IRON ALLOY FOR CYLINDER HEADS - A lamellar graphite cast iron alloy is described which, as additives, has 2.80% by weight-3.60% by weight carbon (C), 1.00% by weight-1.70% by weight silicon (Si), 0.10% by weight-1.20% by weight manganese (Mn), 0.03% by weight-0.15% by weight sulphur (S), 0.05% by weight-0.30% by weight chromium (Cr), 0.05% by weight-0.30% by weight molybdenum (Mo), 0.05% by weight-0.20% by weight tin (Sn) and the usual impurities, and also described is a cylinder head which can be obtained therefrom. | 06-09-2011 |
20110131871 | USE OF POLYOXYMETHYLENE DI (ALKYL POLYGLYCOL) ETHERS AS ADDITIVES TO DIESEL FUELS TO REDUCE THE PARTICULATE EMISSION IN SELF-IGNITION ENGINES - The use of polyoxymethylene di(alkyl polyglycol) ethers of the general formula RO(CH | 06-09-2011 |
20110113759 | DEVICE FOR THE AFTERTREATMENT OF EXHAUST GASES OF INTERNAL COMBUSTION ENGINES - A device for the aftertreatment of exhaust gases in an exhaust gas system of internal combustion engines, having at least one reductant decomposition catalyst. Arranged in the exhaust gas flow, and a metering device arranged upstream of the latter in an exhaust gas line for supplying reductant. Preferably at least one other catalyst device is provided downstream of the reductant decomposition catalyst. An inlet section for the exhaust gas having at least one flow deflection area is arranged upstream of the reductant decomposition catalyst and constructed for the exhaust gas to be fed into a housing radially outside an inlet pipe adjoining the reductant decomposition catalyst that encloses the inlet pipe, and is guided in counterflow through a front inlet opening of the inlet pipe to the reductant decomposition catalyst. The reductant is fed into the flow deflection area associated with the inlet opening. | 05-19-2011 |
20110079196 | Internal Combustion Engine Having A Motor Brake Assembly - An internal combustion engine includes an exhaust valve for removing exhaust gas from a combustion chamber and an engine braking device with a hydraulic valve control unit by which the exhaust valve can be held in an intermediate open position when the engine braking device is actuated. A hydraulic valve lash compensation mechanism for the exhaust valve and a control channel formed between the hydraulic valve control unit and the valve lash compensation mechanism for feeding oil to the hydraulic valve control unit that can be closed by a closure element to compensate for the valve lash of the exhaust valve. A counter-holder is constructed as a piston-cylinder unit. The counter-holder forms a variable stop for a valve bridge cooperating with the valve lash compensation mechanism. | 04-07-2011 |
20110079195 | Internal Combustion Engine Having A Motor Brake Assembly - An internal combustion engine includes an exhaust valve for removing exhaust gas from a combustion chamber and an engine braking device with a hydraulic valve control unit by which the exhaust valve is held in an intermediate open position when the engine braking device is actuated. The internal combustion engine includes a hydraulic valve lash compensation mechanism for the exhaust valve and a control channel formed between the hydraulic valve control unit and an oil feed channel for feeding oil to the hydraulic valve control unit which can be closed by a closure element to compensate for valve lash of the exhaust valve. A counter-holder is constructed as a piston-cylinder unit that forms a variable stop for a valve bridge cooperating with the valve lash compensation mechanism. | 04-07-2011 |
20100242347 | DIESEL FUEL BASED ON ETHANOL - A diesel fuel based on ethanol is described, which comprises about 60 to about 90% (v/v) ethanol, up to about 20% (v/v) of a linear dialkyl ether with a chain length of about 10 to about 40 as well as mixtures thereof, and 0 to about 30% (v/v) combustion accelerator. | 09-30-2010 |
20100223914 | Method For Adjusting the Metered Additions of Reducing Agent For Selective Catalytic Reduction - A method for use in conjunction with an exhaust gas post-treatment system for metering an ammonia-releasing reducing agent into the exhaust gas stream of an internal combustion engine installed in a motor vehicle and operating with excess air. A control unit meters the quantity of reducing agent as a function of a stored model and, during the operation of the internal combustion engine, determines, by comparison of a value proportional to the nominal emission or the nominal conversion stored in the control unit of the internal combustion engine for the associated operating point of the internal combustion engine and/or of the exhaust gas post-treatment system with a value proportional to the actual emission or the actual conversion metrologically determined by the control unit. | 09-09-2010 |
20100223907 | Method For Adjusting the Metered Quantity of Reducing Agent For Selective Catalytic Reduction - A method for application in conjunction with an exhaust gas post-treatment system for metering an ammonia-releasing reducing agent into the exhaust gas stream of an internal combustion engine installed in a motor vehicle and operated with excess air. A control unit meters the quantity of reducing agent as a function of a stored model and during the operation of the internal combustion engine varies the metered quantity during certain operating phases and compares the change in the measured value of at least one NO | 09-09-2010 |
20100212867 | Cooling Device for Engine Oil and/or Transmission Oil, Particularly in an Internal Combustion Engine - A cooling device for engine oil and/or transmission oil, particularly in an internal combustion engine, with an oil cooler which is arranged in an oil pan and through which a coolant flows. The oil cooler is formed by a plate heat exchanger ( | 08-26-2010 |
20100146969 | Vehicle or Stationary Power Plant Having a Turbocharged Internal Combustion Engine as a Drive Source - A vehicle or stationary power plant having an internal combustion engine as a drive source and having components adapted to be supplied with heat from a medium accommodated in a closed loop The turbine of the exhaust gas turbocharger provided for turbocharging the internal combustion engine acts as a heat source. A heat exchanger is disposed externally on the turbine housing and can be incorporated or switchable into the medium loop The medium can be conveyed directly or channeled through the interior of the heat exchanger, and the medium is adapted to be heated up in such interior utilizing at least thermal radiation energy from the hot turbine housing. | 06-17-2010 |
20100132435 | DETERMINATION OF FUEL CHARACTERISTICS AND THEIR INFLUENCE ON EXHAUST GAS EMISSIONS DURING OPERATION OF AN INTERNAL COMBUSTION ENGINE - A method for determining a deviation of a fuel quality from a reference quality and for determining a change in exhaust gas emissions caused by this deviation by evaluating pressure waves in a fuel system of an internal combustion engine outfitted with one of a discontinuous fuel delivery and a fuel take-off. The method includes detecting pressure oscillations in the fuel system during operation by at least one sensor; determining at least one of a fuel type and the deviation from a reference fuel quality by analyzing the detected pressure oscillations in an electronic monitoring unit; and at least one of changing behavior of an exhaust gas aftertreatment system downstream of the internal combustion engine based at least in part on deviations of the untreated emissions of the internal combustion engine from the untreated emissions occurring when using the reference fuel, changing service intervals when a deviation from the reference fuel quality is determined, changing engine oil change intervals are changed when a deviation from the reference fuel quality is determined displaying information about use of a fuel deviating from the reference fuel is, displaying the changed service interval, changing operating parameters of the internal combustion engine, and changing operating parameters of the exhaust gas aftertreatment system downstream of the internal combustion engine. | 06-03-2010 |
20100108003 | Gas Exchange Valve For Internal Conbustion Engines - A gas exchange valve arrangement, especially for an internal combustion engine, with a valve head, which is mounted on a valve body. The valve body can be moved in a straight line in either of two opposite directions by an actuating element, which can be moved in either of the two directions of movement such that, as a result of a movement of the actuating element in at least one direction, the valve body is caused to move in the same direction. The actuating element comprises a piston, which can be moved relative to a space by a fluid medium. The space comprises a feed opening for the fluid medium, and the gas exchange valve arrangement includes a throttle device, which at least temporarily throttles the movement of the actuating element in at least one direction of its movement. | 05-06-2010 |
20100065538 | Method and Device for the Fracture Separation of Workpieces - A method and device for fracture separation of a workpiece into components of the workpiece, wherein a recess is produced by a material processing device in a predetermined area of the components by removal of material from the components. The recess serves as a crack initiation site for the separation of the components. The component is heated in an area of the recess by the material processing device, and the heating takes place with a predetermined heat input in such a way that a temperature of the components does not exceed a predetermined temperature. | 03-18-2010 |
20100041543 | Method and Device for the Regeneration of a Particle Filter Arranged in the Exhaust Gas Train of an Internal Combustion Engine - A method and a device for the regeneration of a particle filter, especially a diesel particle filter, arranged in the exhaust gas train of an internal combustion engine, wherein an exhaust gas stream to be cleaned is supplied to the at least one particle filter. The exhaust gas stream supplied to the at least one particle filter is a raw exhaust gas stream of the internal combustion engine, into which, during regeneration mode, a heated exhaust gas stream at a higher temperature than the raw exhaust gas stream is mixed at a point upstream of the particle filter under the control of at least one open-loop and/or closed-loop control device, which actuates a throttle device and/or shut-off device in accordance with predetermined regeneration parameters. | 02-18-2010 |
20100037768 | METHOD AND DEVICE FOR THE REGENERATION OF A PARTICLE FILTER ARRANGED IN THE EXHAUST GAS TRACT OF AN INTERNAL COMBUSTION ENGINE - A method and to a device for the regeneration of a particle arranged in the exhaust gas train of an internal combustion engine. An exhaust gas stream to be cleaned is supplied to the at least one particle filter. At least in a regeneration mode, a predetermined amount of an exhaust gas stream to be heated is branched off from the exhaust gas stream upstream of an exhaust gas turbine of an exhaust gas turbocharger which branched-off stream, after it has been heated by a heater is mixed in the form of a heated exhaust gas stream at a point upstream of the at least one particle filter back into the residual gas stream which is coming from the exhaust gas turbine and which is at a lower temperature than that of the other stream. | 02-18-2010 |
20100037607 | METHOD AND DEVICE FOR THE REGENERATION OF A PARTICLE FILTER ARRANGED IN THE EXHAUST GAS TRACT OF AN INTERNAL COMBUSTION ENGINE - A method and to a device for the regeneration of a particle filter arranged in the exhaust gas tract of an internal combustion engine with at least one NO oxidation catalyst for the oxidation of NO, especially to NO | 02-18-2010 |
20100037600 | Particle Separator, Especially a Particle Filter, for the Separation of Particles from the Exhaust Gas Stream of an Internal Combustion Engine - A particle separator for the separation of particles from the exhaust gas stream of an internal combustion engine. The particle separator includes different heat transfer zones arranged at least in the main flow direction of an exhaust gas stream through the particle separator, different, that is, with respect to heat storage capacity and/or thermal conductivity and/or the heat-transfer properties from the exhaust gas stream to the particle separator. Each of these different zones makes it possible for a precisely defined amount of heat to be transferred from the exhaust gas stream to the individually assigned sections of the particle separator. | 02-18-2010 |
20090255240 | Sulfur-Resistant Exhaust Gas Aftertreatment System For The Reduction Of Nitrogen Oxides - An arrangement for aftertreatment of exhaust gas for lean-burn internal combustion engines such as diesel engines and Otto engines with direct injection has a NO | 10-15-2009 |
20090255235 | Sulfur-Resistant Exhaust Gas Aftertreatment System For The Oxidation Of NO - An arrangement for aftertreatment of exhaust gas for lean-burn internal combustion engines such as diesel engines and Otto engines with direct injection includes a catalyzer for oxidation of nitrogen monoxide and a molecular sieve which keeps sulfur dioxide away from the catalyzer arranged upstream of the catalyzer. | 10-15-2009 |
20090205600 | Rocker Arm Arrangement With a Bearing Shell Provided with Grooves - Rocker arm arrangement of an internal combustion engine has a bearing journal with a central axis and an outside circumferential surface running in the central bore of a rocker arm lined with a bearing shell. The bearing journal has a first transverse oil channel leading to at least one outlet at the running surface underneath the central axis. The bearing shell has an outer shell surface and an inner shell surface. The inner shell surface has a circumferentially extending internal groove, both ends of which terminate underneath the central axis, this groove extending to the outlet of the first oil channel when the rocker arm is in its base position. The outer shell surface has at least one circumferentially extending external groove, which extends as far as an inlet of a second oil channel passing through the rocker arm. At least one through-opening connects the internal groove and the external groove. | 08-20-2009 |
20090205325 | Compact Exhaust Gas Aftertreatment System - The invention is directed to a device for converting exhaust gas constituents of an internal combustion engine by means of at least one catalyzer and/or particle filter and/or particle separator and for compensating relative movements between the internal combustion engine and the exhaust gas train and/or relative movements between different parts of the exhaust gas train by means of at least one compensator permitting relative movements. The at least one catalyzer for converting exhaust gas constituents and/or the at least one particle filter and/or the at least one particle separator are/is arranged inside the compensator and or inside the part of the exhaust gas train that is permanently connected to the compensator. The outer diameter of the catalyzer and/or of the particle filter and/or of the particle separator is less than or equal to the inner diameter of the compensator. | 08-20-2009 |
20090199549 | Apparatus For Reducing Dibenzodioxin Emissions And Dibenzofuran Emissions From Transition Metal-Containing Catalyzers - A device for reducing the emission of polychlorinated dibenzodioxins (PCDD) and polychlorinated dibenzofurans (PCDF) from transition metal-containing catalyzers for selective catalytic reduction of nitric oxides in the exhaust gas of an internal combustion engine by means of ammonia and/or reducing agents which split off ammonia. At least one catalyzer for oxidizing hydrocarbon-containing PCDD precursor substances and PCDF is arranged upstream of the at least one transition metal-containing SCR catalyzer and/or at least one catalyzer for degrading precursor substances for degrading the polychlorinated dibenzodioxins and/or polychlorinated dibenzofurans is arranged downstream of the at least one transition metal-containing catalyzer. The at least one catalyzer for degrading PCDD and PCDF and/or the at least one catalyzer for oxidizing hydrocarbon-containing precursor substances thereof are/is additionally active for the reduction of nitric oxides by means of ammonia. | 08-13-2009 |
20090199546 | Device For Reducing Dibenzodioxin Emissions, Dibenzofuran Emissions And Particle Emissions - A transition metal-containing catalyzer is arranged on a particle filter installed in the exhaust gas line of an internal combustion engine and cannot be separated therefrom without being destroyed. To reduce emissions, at least one molecular sieve which retains polychlorinated dibenzodioxins and polychlorinated dibenzofurans is arranged between the transition metal-containing catalyzer and the exhaust gas outlet. Further, the input side of the molecular sieve and/or the output side of the catalyzer has an oxidation activity for hydrocarbons, polychlorinated dibenzodioxins and polychlorinated dibenzofurans upstream of the molecular sieve. | 08-13-2009 |
20090199545 | Apparatus For Reducing Dibenzodioxin Emissions And Dibenzofuran Emissions From Transition Metal-Containing Catalyzers - Apparatus for reducing emissions of PCDD and PCDF in exhaust gas of an internal combustion engine includes a transition metal-containing catalyzer for the selective catalytic reduction of nitric oxides, and a molecular sieve upstream of the catalyzer, either as a layer on the catalyzer or on a separate structure. The molecular sieve blocks hydrocarbons from reaching the transition metal-containing catalyzer. | 08-13-2009 |
20090145117 | Exhaust gas aftertreatment system - Exhaust gas aftertreatment system for internal combustion engines operated with a lean mixture, wherein nitrogen oxides are reduced by an SCR catalyst, and particulates are removed by a particle separator or filter. A thermolysis catalyst is located near the engine in the exhaust gas split stream downstream of the supply point of the reducing agent. At temperatures above 135° C., this thermolysis catalyst vaporizes the water component of the aqueous urea solution. It contains a catalyst material that is thermally stable at exhaust gas temperatures occurring near the engine and preferentially reacts with the urea to form isocyanic acid. A hydrolysis catalyst is located in the exhaust gas stream downstream of the return of the split stream into the main stream of exhaust gas. The hydrolysis catalyst converts the isocyanic acid formed during thermolysis to ammonia and carbon dioxide using water vapor formed in the thermolysis catalyst. | 06-11-2009 |
20090014247 | Oil Sump And Method Of Its Production - An oil sump for use in internal combustion engines or transmissions, where the oil sump consists of sheet metal shaped by deep drawing and has a reinforced edge, by means of which it rests, in its mounted state, in the internal combustion engine or the transmission with a seal positioned between them. The reinforcement consists of at least one separate metal part, which is mounted on the edge of the oil sump by positive locking and/or nonpositive locking with deformation of the edge of the oil sump. | 01-15-2009 |