Abstract: A device for cooled recirculation of exhaust gas of an internal combustion engine charged with the aid of an exhaust gas turbocharger, the internal combustion engine having a fresh gas system and an exhaust gas system, which are connected to a two-stage exhaust gas cooler via an exhaust gas recirculation line. A device by way of which a sufficient amount of exhaust gas may be recirculated by simple means is provided. This is achieved in that exhaust gas recirculation line 8a, 8b is connected to an exhaust gas collecting line 7a, 7b of the exhaust gas system upstream from turbine 6 of exhaust gas turbocharger 5 in the direction of flow, an exhaust gas recirculation valve 9a, 9b being connected upstream from first stage 10a, 10b of the exhaust gas cooler in exhaust gas recirculation line 8a, 8b, and a nonreturn valve 11a, 11b is inserted into a continuation line 12a, 12b leading to the second stage of the exhaust gas cooler.

Abstract: An exhaust gas recirculation control system for internal combustion engines includes an intake pipe (1) for delivering combustion air to the individual combustion chambers, an exhaust pipe (2) for discharging the exhaust gases from the combustion chambers, an exhaust gas recirculation line (3) that connects the intake pipe (1) and the exhaust pipe (2), and a mechanical injection pump (4) which is controlled by a control rod (5) is disclosed. An electrically controlled EGR valve (exhaust gas recirculation valve) (6) is located in the exhaust gas recirculation line (3) in order to control the effective cross section of the exhaust gas recirculation line (3) while an electrical pick-off device (7) determines the position of the control rod (5) and then controls the EGR valve (6).

Abstract: An exhaust-gas aftertreatment system (5) for an auto-ignition internal combustion engine, having a catalytic converter (7a) and/or particle filter (7b) which are/is assigned a burner (6) arranged upstream in an exhaust line (4), to which burner (6) fuel can be supplied via a fuel nozzle device and also combustion air can be supplied, and wherein the combustion air and the fuel emerging from the fuel nozzle device are mixed in a downstream air swirl vaporizer nozzle (21). An exhaust-gas aftertreatment system (5) having a burner (6) is provided which operates reliably with a compact design and in which the supplied energy for operating the burner (6) is reduced in relation to known systems. Furthermore, the exhaust-gas aftertreatment system (5) can be used for all conceivable variants of a system of said type.

Abstract: A method and a device for selectively purifying the exhaust gas of an internal combustion engine using a selective catalytic reduction (SCR) catalytic converter (2), wherein a reducing agent is metered to the exhaust gas prior to entry into the SCR catalytic converter (2). An overdose of the reducing agent is added to the exhaust gas, and the exhaust gas, after exiting the SCR catalytic converter, is fed in part through an oxidation catalytic converter (5) and in part to a second SCR catalytic converter (8) via a bypass (6) circumventing the oxidation catalytic converter. In the oxidation catalytic converter (5), one half of the excess NH3 flowing out of the first SCR catalytic converter (2) is converted to NOx and reacts to form non-hazardous nitrogen after mixing with the other half of the excess NH3 flowing unchanged through a bypass.

Abstract: A hybrid powertrain of a motor vehicle, especially of a mobile machine having an internal combustion engine and an electric motor, the powertrain also having a hydraulic machine.

Abstract: An internal combustion engine includes a crankcase and a cylinder head which covers a cylinder of the crankcase and in which a fresh-gas channel and an exhaust-gas channel are made which open on a cylinder-head longitudinal side and are connected to in each case a fresh-gas line and an exhaust-gas collection line, and wherein there is an exhaust-gas recirculation system, including an exhaust-gas recirculation line and a control valve. An internal combustion engine having an exhaust-gas recirculation system is provided, in which the exhaust-gas recirculation system remains uninfluenced by the exhaust-gas collection line which is hot during operation. This is achieved in that the exhaust-gas recirculation system is arranged on that cylinder-head side which lies opposite the fresh-gas line and the exhaust-gas collection line.

Abstract: An internal combustion engine includes an injection system that is configured as a high-pressure accumulator system in which the number of parts is small and the injection system can be easily assembled. The connecting fittings for the connection of the high-pressure lines are laterally offset with respect to the appertaining injection valves and in that the absolute magnitude of said offset is identical for all injection valves of a row of cylinders of the internal combustion engine.

Abstract: A method for operating a filter includes forcibly passing a stream of a fluid through a filter wall of the filter from a raw gas side to a clean gas side of the filter so as to separate out particles and particle constituents from the stream, wherein the particles and particle constituents are collected on the raw gas side and performing a regeneration process on the filter during operation of the filter. The regeneration process includes removing particles and particle constituents from the raw gas side of the filter and moving the removed particle constituents to a receiving device disposed on the raw gas side. Alternatively, the filter walls includes a plurality of channels on the raw gas side, each channel closed by a closure wall configured to be partially opened to enable the disposing of the particle constituents.

Abstract: An internal combustion engine includes an injection system that is configured as a high-pressure accumulator system in which the number of parts is small and the injection system can be easily assembled. The connecting fittings for the connection of the high-pressure lines are laterally offset with respect to the appertaining injection valves and in that the absolute magnitude of said offset is identical for all injection valves of a row of cylinders of the internal combustion engine.

Abstract: The invention relates to a method of cleaning a particle filter (1) by means use of a fluid, whereby the filter material is alternately treated with pressure and high flow rate. By means of the above using this method, the ash is washed out of the filter material, essentially more effectively; namely, and more completely and more gently for the filter material (2) than previously possible.

Abstract: A product bed comminution high-pressure roller press wherein the problem of great recirculations of product material or, respectively, high product circulation rates caused, for example, because of reduced roller press pressures is solved employing little machine outlay. Two rollers (10, 11) are surrounded by a housing composed of two stationary lateral end walls (12, 13) between which a rotatably seated material conveying ring (16) that can be rotated is arranged for an internal product material circulation. The product material is admitted from the side through one or more openings (22) in one or in both housing end walls (12, 13) and the product material is discharged laterally through one or more openings (24) in the housing end walls (12, 13) via a discharge element (25) and/or via one or more discharge elbows (27).

Abstract: In two-roll machines for high-pressure disintegration of granular material, in which typically only one of the two rolls is motor driven, while the other roll is driven by means of friction via the granular material pressed in the roll gap, and thus operates as a drag roll, it is proposed to equip the drag roll with a separate, smaller drive mechanism including a separate smaller drive motor. This drive is thereby dimensioned in such a way that the startup of the drag roll is ensured and a drop in revolutions per minute of the drag roll is avoided. Alternatively, this separate drive is enlarged in such a way that it can transmit 10% to 40%, preferably 20%, of the total required drive power.

Abstract: In order to assure that an adequately small delivery granulation is offered to the nip of a two-roller machine, preferably a high-pressure roller press for interparticle crushing, namely for an optimum draw-in of the granular material, it is inventively proposed that a sieve means to be arranged in the product delivery shaft of the two-roller machine and that the oversized sieve particles be comminuted with a crushing roller that is likewise arranged in the product delivery shaft and that the comminuted particles then be presented to the high pressure nip for further interparticle crushing.

Abstract: In order to create a wear-resistant surface armoring suited for autogenous wear protection for the rolls of high-pressure roll presses for pressure disintegration of granular material using nap bolts (grid armoring), which also comprises a high serviceable life span even under the effect of high-pressure loads, it is proposed to give the nap bolt the shape of a mushroom, whose head projects outward from the roll body and whose shaft is sunk into the corresponding recess or bore of the roll body in such a way that an open space remains between the base of the bore and the lower end of the shaft of the bolt.

Abstract: A cement clinker manufacturing installation a rotary kiln (10) having secondary firing and a grate cooler (16) with a high degree of heat recuperation. Instead of placing the grate cooler (16) in-line with the rotary kiln (10), the grate cooler (16) is positioned with its clinker transport direction (16a) transverse to the longitudinal axis of the rotary kiln (10). This angular positioning of the grate cooler (16) permits a discharge of hot air from the grate cooler as combustion air for the secondary firing of the calcination state by way of a discharge opening (20 or 21) on the lateral half of the kiln discharge housing (11) in which the beginning of the recuperation zone of the grate surface (15) of the grate cooler (16) is located. Thus somewhat cooler secondary air (18) flows into the rotary kiln (16) thereby avoiding excessively high temperatures at the rotary kiln discharge without reduction in overall thermal efficiency of the cement plant.

Abstract: An apparatus for the centrifugal separation of a solid-liquid mixture including an elongate centrifuge drum rotatable about a central axis, a coaxially located conveyor worm within the drum having worm helix flights on a worm drum therein, an opening for the discharge of a light fraction and an opening for the discharge of a heavy fraction, the opening for the discharge of the light fraction located in a radius from the drum axis less than the radius of the worm drum and the opening for the heavy fraction being located at a radius relative to the axis of the drum less than the radius of the worm drum.

Abstract: A mechanism for the cooling of bulk materials such as hot cement clinker emerging from a calcining furnace with a materials transfer device for receiving hot discharge from a furnace into the cooling mechanism with the cooling mechanism having a first cooling section with an immobile stepped grate inclined relative to the horizontal whereby material passes from a receiving end to a discharge end, also having a second cooling section positioned so that the material to be cooled is discharged from the first cooling section onto a receiving end of the second cooling section which includes a sliding grate, and a third cooling section having an immobile inclined stepped grate positioned to receive material from the discharge end of the second cooling section and passing the material over the third cooling section to a discharge end.

Abstract: A method of calculating fuel injection quantities, as determined by the initiation and duration of fuel injection, in an internal combustion engine in response to repetitive engine operating parameters measured during engine operation. The quantity of fuel injected into a cylinder of a multicylinder engine may be determined through measurement of an operating characteristic of that cylinder immediately prior to injection. The timing of injection may also be responsive to the measurement of the engine operating characteristic which may not be uniformly repetitive.

Abstract: In a method and an apparatus for forage processing, in order to accelerate its drying process, mown stalk material is fed to rotating pressing elements (7, 7a, 7b), which consolidate the stalk material into a mat of stalk material. In order to produce an inherently stable mat of stalk material, the thickness and density of said mat are to be held constant, independent of the quantity of stalk material supplied by a mowing or collecting means (1), and the forage constituents within the mat are to be better mixed. To this end, the volume of stalk material fed to the pressing means (7) and a conveying speed of the pressing elements (7a and 7b) are continuously transmitted to a control means (20) as measured values, and on the basis of these parameters the conveying speed is reduced by means of the control means (20) in the case of a small quantity of stalk material accumulating (FIG. 1).

Abstract: In a known magnet system, specifically for magnetic separators, having homogeneously magnetized magnet blocks arranged in circular ring shape, the magnet blocks have their magnetization directions aligned differently from one to another and established in accordance with a predetermined mathematical formula. While a magnetic field running almost uniformly over the whole region of the magnet system is thus produced, the magnet blocks are made trapezoidal in cross section and, because of the many distinct magnetization directions, require separate fabrication. Both the fabrication and the assembly of these magnet blocks are therefore relatively complicated and time-consuming. In accordance with the invention, however, the fabrication and the assembly of the magnet blocks into a magnet system are quite substantially simplified and improved by virtue of the fact that the magnet blocks (1) are made square in cross section.