Abstract: An auxiliary drive is provided for an internal combustion engine and includes a shaft supported in a housing by means of radial and axial bearings and a gear having the shaft non-rotatably secured thereto. The gear is driveable by a crankshaft of the internal combustion engine via intermediary gearing. The auxiliary drive also includes a power take off flange non-rotatably secured to a free end of the shaft for transferring power to a working engine such as, for example, a cement mixer. The shaft with the radial and axial bearings and the gear are integrated into the crankcase of the internal combustion engine and the gear is located directly between the radial bearings.

Abstract: A check valve is provided and has a housing having inlet and outlet openings and comprising two essentially planar plate portions. A thin steel plate that acts as a valve is disposed between the plate portions. Under the effective pressure, the valve opens in one direction and blocks flow in the opposite direction. The valve has at least one valve tongue, and the plate portions in the valve are fixedly connected together. One of the plate portions is associated with the discharge zone and in the vicinity of the valve tongue is provided with at least one arched portion for limiting opening of the valve tongue. The other plate portion has bores through which the exhaust gas can enter under overpressure.

Abstract: A method is provided for adapting or adjusting a machine support where the weight of the machine is accommodated exclusively by a main support. For a differentiated adaptation of the machine support to secondary forces, such as oscillating inertial forces, at least one auxiliary module, which is free of the weight of the machine, is connected in parallel to the main support in such a way that as a consequence of the spring rigidity of the auxiliary module, a spring system combination of the main support and of the auxiliary module corresponds to prescribed characteristics of dampening and inherent frequency.

Abstract: In a method for reducing NOx in the exhaust gas of an externally ignited, explosion-type internal combustion engine that is operated at a lean fuel/air ratio of &lgr;>1 and has a motor control device for controlling &lgr;, the &lgr; value is slidingly controlled as a function of an average mass temperature in the combustion chamber of the externally ignited, explosion-type internal combustion engine, wherein for a low average mass temperature &lgr; is decreased and for a high average mass temperature &lgr; is increased such that the internal combustion engine is operated in any operational state close to the misfiring limit, and thereby, with the most minimal NOx emission possible.

Abstract: A piston cooling system is provided for an internal combustion engine having a crankshaft, a plurality of pistons connected to the crankcase shaft, and a crankcase housing partitioned by a plurality of partition walls into a plurality of partitioned sections, and a pressurized lubrication fluid circuit integrated with the crankcase housing for the circulation of lubricant therethrough. The piston cooling system includes a plurality of bores each formed in a respective partition wall and communicated with the pressurized lubricant fluid circuit. The piston cooling system also includes a plurality of spray nozzles, each spray nozzle being mounted in a longitudinal bore formed in a respective partition wall. Each spray nozzle is oriented for spraying lubricant onto the underside of a piston. Each spray nozzle is formed by a lathe process.

Abstract: A crankshaft rotational support for an internal combustion engine having a crankshaft supported by rotational support elements spaced from one another along the longitudinal direction of the internal combustion engine is provided. The crankshaft rotational support includes a plurality of bearing blocks and a plurality of bearing covers. Stiffening elements extend longitudinally for interconnecting H-shaped side projections of the bearing covers to one another. The bearing blocks, the bearing covers, and the stiffening elements collectively form a unit which is cast as an integral unit during a casting process with the cast bearing covers and the cast bearing blocks being separable from one another along a break line. The side projections and the stiffening elements each have an open profile that does not comprise any fully encircled apertures in which a casting sand core may remain after casting.

Abstract: A method is provided for adapting or adjusting a machine support where the weight of the machine is accommodated exclusively by a main support. For a differentiated adaptation of the machine support to secondary forces, such as oscillating inertial forces, at least one auxiliary module, which is free of the weight of the machine, is connected in parallel to the main support in such a way that as a consequence of the spring rigidity of the auxiliary module, a spring system combination of the main support and of the auxiliary module corresponds to prescribed characteristics of dampening and inherent frequency.

Abstract: A crankcase with integrated exhaust chambers and crank chambers partitioned from one another by partitions is provided and includes a plurality of cylinder liners and a plurality of bores each for receiving therein one of the cylinder liners. The crankcase also includes plenum chambers extending lengthwise on both sides of the crankcase for passage thereinto of the blow by and a plurality of bands each for partitioning off the plenum chambers relative to a respective crank chamber in cooperation with the cylinder liners. Window openings in the partition walls and transition passages associated with a respective one of the plenum chambers effect the connection of the crank chambers with the plenum chambers.

Abstract: A compact cross-channel mixer having several stacked foils is provided whereby flow channels are formed due to a special profiling of the foils, e.g., a sine wave design. The flow channels of foils that are positioned on top of each other. The stacked foils that form a mixing element are rotated about the main flow direction.

Abstract: A fluid cooled cylinder liner for mounting in a cylinder of an internal combustion engine is provided. The fluid cooled cylinder liner includes a collar and a seal element. The collar has an outer circumferential surface dimensioned with respect to the inner circumference of the cylinder so as to be in substantially fluid sealing contact therewith, an annular cooling fluid channel formed radially inwardly of the outer circumferential surface, and a radial bore extending radially from the fluid channel through the outer circumferential surface and having one end communicated with the fluid channel and an opposite end communicated with a branch bore of the crankcase of the engine. The seal element substantially seals the interface between the branch bore of the crankcase and the radial bore of the collar of the cylinder liner against the leakage of cooling fluid.

Abstract: A check valve is provided and has a housing having inlet and outlet openings and comprising two essentially planar plate portions. A thin steel plate that acts as a valve is disposed between the plate portions. Under the effective pressure, the valve opens in one direction and blocks flow in the opposite direction. The valve has at least one valve tongue, and the plate portions in the valve are fixedly connected together. One of the plate portions is associated with the discharge zone and in the vicinity of the valve tongue is provided with at least one arched portion for limiting opening of the valve tongue. The other plate portion has bores through which the exhaust gas can enter under overpressure.

Abstract: A crankcase with integrated exhaust chambers and crank chambers partitioned from one another by partitions is provided and includes a plurality of cylinder liners and a plurality of bores each for receiving therein one of the cylinder liners. The crankcase also includes plenum chambers extending lengthwise on both sides of the crankcase for passage thereinto of the blow by and a plurality of bands each for partitioning off the plenum chambers relative to a respective crank chamber in cooperation with the cylinder liners. Window openings in the partition walls and transition passages associated with a respective one of the plenum chambers effect the connection of the crank chambers with the plenum chambers.

Abstract: A fluid cooled cylinder liner for mounting in a cylinder of an internal combustion engine is provided. The fluid cooled cylinder liner includes a collar and a seal element. The collar has an outer circumferential surface dimensioned with respect to the inner circumference of the cylinder so as to be in substantially fluid sealing contact therewith, an annular cooling fluid channel formed radially inwardly of the outer circumferential surface, and a radial bore extending radially from the fluid channel through the outer circumferential surface and having one end communicated with the fluid channel and an opposite end communicated with a branch bore of the crankcase of the engine. The seal element substantially seals the interface between the branch bore of the crankcase and the radial bore of the collar of the cylinder liner against the leakage of cooling fluid.

Abstract: A crankshaft rotational support for an internal combustion engine having a crankshaft supported by rotational support elements spaced from one another along the longitudinal direction of the internal combustion engine is provided. The crankshaft rotational support includes a plurality of bearing blocks and a plurality of bearing covers. Stiffening elements extend longitudinally for interconnecting H-shaped side projections of the bearing covers to one another. The bearing blocks, the bearing covers, and the stiffening elements collectively form a unit which is cast as an integral unit during a casting process with the cast bearing covers and the cast bearing blocks being separable from one another along a break line. The side projections and the stiffening elements each have an open profile that does not comprise any fully encircled apertures in which a casting sand core may remain after casting.

Abstract: A piston cooling system is provided for an internal combustion engine having a crankshaft, a plurality of pistons connected to the crankcase shaft, and a crankcase housing partitioned by a plurality of partition walls into a plurality of partitioned sections, and a pressurized lubrication fluid circuit integrated with the crankcase housing for the circulation of lubricant therethrough. The piston cooling system includes a plurality of bores each formed in a respective partition wall and communicated with the pressurized lubricant fluid circuit. The piston cooling system also includes a plurality of spray nozzles, each spray nozzle being mounted in a longitudinal bore formed in a respective partition wall. Each spray nozzle is oriented for spraying lubricant onto the underside of a piston. Each spray nozzle is formed by a lathe process.

Abstract: A device for compensation of voltage drop at light sources of a vehicle has light sources having a resistance R0 and connected to a vehicle battery. An auxiliary charging device with electric motor is provided. The electric motor has an on/off switch and is connected to the vehicle battery. The electric motor is connected parallel to the light sources. A resistor is serially connected upstream of the light sources and is selected, based on the resistance R0, such that a nominal current I flowing through the light sources causes a voltage drop &Dgr;E=I×R in the resistor that matches a voltage drop occurring when the electric motor is switched on. A first switch is connected parallel to the resistor for short-circuiting the resistor when the electric motor is switched on by the on/off switch.

Abstract: In a method for metering a reducing agent into a NO.sub.x containing exhaust gas of an internal combustion engine before the exhaust gas enters the catalytic convertor having at least NO.sub.x reducing activity, a minimal heat capacity, and a minimal storage capacity for a reducing agent, the engine-specific data for NO.sub.x concentration and exhaust gas volume are determined with a reference engine. The actual exhaust gas temperature of the internal combustion engine during operation is measured by a sensor. The reducing agent amount is calculated based on the engine-specific data and the actual exhaust gas temperature. Load-specific parameter changes of the internal combustion engine during operation are detected and a dynamic correction of the reducing agent amount based on the load-specific parameter changes is performed. The corrected reducing agent amount is then supplied into the exhaust gas stream. In a variation of the inventive method, the NO.sub.

Abstract: A cylinder head sealing device for an internal combustion engine has a cylindrical gasket ring which has a relatively small wall thickness. This gasket ring engages on the one hand an annular groove within the cylinder head which is coaxially arranged relative to the cylinder axis. On the other hand, it engages a recess at the end of the cylinder liner. The annular groove is dimensioned such that during tightening of the cylinder head screws a radial as well as an axial play remains between annular groove and gasket ring. The sealing action is achieved such that the gasket ring which has relatively thin walls relative to its height is expanded by the gas pressure within the cylinder and pressed with its outer cylindrical wall against the recess of the cylinder liner thus leading to a sealing effect. The sealing effect is thus a function of the gas pressure. The sealing with respect to cooling water is achieved by an auxiliary areal seal which is prestressed by the cylinder head screws.

Abstract: A combustion chamber shape for air-compressing, self-igniting internal combustion engines is designed such that fuel injection jets ejected from a multiport injection valve positioned on the cylinder axis do not come into contact with the walls of the combustion chamber. For this purpose, the piston bottom is conically shaped whereby the slant of the conical surface is selected such that the piston bottom is adapted to the contour of the widening injected fuel jet. The cylinder head bottom is designed as a spherical segment, also with the goal that the fuel injection jet does not come into contact with the combustion chamber walls. The conically designed piston bottom may have radially extending depressions when the combustion chamber is very small in order to achieve high compression ratios.

Abstract: A central swivel joint for optimizing ground adaptation of front machinery of farm tractors has a central beam and a support beam that are rigidly connected to one another to form a constructive unitary part. A support is provided which has a friction bearing in which the support beam is supported. The friction bearing includes a floating bearing and a stationary bearing and is connected to the lubrication system of the motor of the farm tractor for lubrication purposes. The central beam can be in the form of a conventional square beam. Furthermore, the stationary bearing for receiving the axial forces that are exerted onto the central beam is freely accessible as long as the support has not been connected to the oil pan.