Abstract: A device is provided for exhaust gas recirculation (EGR), in particular in diesel engines, from the exhaust gas tract into the fresh air path of the engine, wherein a cooling device connected to the cooling system of the engine is provided within an EGR section as an exhaust-gas (EG)/coolant heat exchanger, with which an EGR valve for proportioning the EG recirculation rate is associated. The EGR valve is connected to a coolant, and the cooling device comprises an EG pre-cooler and an EG main cooler connected downstream of the EG pre-cooler. The EGR valve is installed between the EG pre-cooler and the EG main cooler in a valve housing between the EG pre-cooler and the EG main cooler. A method for EGR is provided as well.

Abstract: In a power generator unit composed of a drive motor and a generator, particularly a diesel engine and a synchronous generator with a stationary rotor winding (28) and permanent magnets (35) arranged in the rotor (29), for excitation of the generator, its rotor (29) forms the flywheel of the diesel engine, as an external rotor, and its stator (11), arranged within the rotor, carries the rotor winding (28).

Abstract: In a power generator unit composed of a generator and a piston internal combustion engine as the drive, particularly a synchronous generator and a diesel engine, with permanent magnets arranged in the rotor of the generator, in the area of the poles, for its excitation, and a rotor winding (28) in the stator, holder pockets (34) that are open at least on one side are formed in the pole regions of the rotor (29), in the axial direction, which border on the air gap (33) formed with the stator (11) with a cylindrical circumference wall (50); the permanent magnets of the pole regions are each formed by a plurality of magnet elements (35), which are arranged next to one another within the holder pockets (34) in the circumference direction.

Abstract: In a one-cylinder or multi-cylinder internal combustion engine there is provided in the cylinder cover (7) a drainage duct (12, 14), which at one end opens radially inward of the annular gasket in the region of the inner rim of the cylinder liner (2), and whose outer end is in communication with the intake port (13) or exhaust port (15) in the cylinder cover (7).

Abstract: In a power generator unit composed of a generator and a piston internal combustion engine as the drive, the rotor is driven by the crankshaft of the diesel engine, and carries permanent magnets to excite the generator while the stator of the generator is arranged within the rotor and carries the rotor winding of the generator. The stator of the generator is divided, for the purpose of voltage regulation, into an outside stator part that forms an air gap with the rotor, and an inside stator part that forms a control air gap with the outside stator part that surrounds it, and is mounted to rotate, relative to the outside stator part, in such a manner that the geometry of the control air gap changes with the rotational position, and that the rotation takes place as a function of the variations in the terminal voltage of the generator.

Abstract: A device for pivotal connection of piston (1) and connecting rod (10) in a reciprocating-piston engine comprises a connecting member (6) integral with the piston, with a bearing surface (9) for a connecting-rod eye (11), which together with the bearing surface (9) forms the pivot bearing of the connecting rod (10) on the piston side; the connecting member (6) is provided at least in the region of the bolting with planar contact faces (7), which together with mating faces (8) on the inside of the piston form a common dividing plane (13); the connecting member (6) is fixed on the side of the piston (1) facing away from the combustion chamber by means of one or more connecting bolts (4) passed through bores in the piston head (2); the bearing surface (9) is much broader toward the straight portion (10) of the connecting rod than on its side facing the piston (10).

Abstract: An air cooled internal combustion engine with a crankshaft that rotates about a vertical axis is provided. The engine may be a single cylinder diesel motor. The internal combustion engine includes an encapsulation which surrounds a plurality of cooling air channels. A flywheel is positioned at the top end of the crankshaft and is combined with a radial blower. An air distribution housing, which is joined to a top front wall of the crank case, forms a pressure chamber of the radial blower. At least two substreams of cooling air branch off from the pressure chamber. A first substream is guided through the housing encapsulation, which surrounds the cylinder and the cylinder head. A second substream is guided in a lining on the outside of the sidewall of the crankcase and the oil pan facing the cylinder. Both substreams are collected on the downstream side and exit through a common air-extractor shaft.

Abstract: In a flywheel assembled from a plurality of parts and having greatly reduced noise proportion for reciprocating-piston engines, especially hand-cranked diesel engines, a first part (17) comprises at least one steel plate, which is joined to at least one further part (22) by rivets, bolts, spot welds and/or fitting to achieve bearing contact therewith over an area, such that the parts are clamped against each other.

Abstract: The invention describes an oil-pickup system for an internal combustion engine, especially a one-cylinder diesel engine with at least three oil-pickup tubes (26, 27, 28), which are in communication with the oil pump via a suction tube (29) and which are disposed in the oil pan (24) in such a way that, if the internal combustion engine is in inclined position, intake of air is prevented by the control valves associated with the oil-pickup tubes.

Abstract: An automatic decompression system for an internal combustion engine, especially a one-cylinder diesel engine, with at least one outlet and one inlet valve, which are activated by a camshaft (20) with at least one cam (1), wherein the outlet valve is lifted during starting to reduce the cranking resistance, wherein there is provided for lifting the outlet valve at speeds below a switching speed for changeover from decompression to compression a fully automatic lifting device, which engages in the cam (1) of the outlet valve and effects lifting of the outlet valve from the valve seat, wherein the lifting device is equipped with a bow-shaped member (22), pivoted in articulated relationship, disposed between cam (1) and a cam disk (2), which bow-shaped member has two articulated arms (11) and a crosspiece (14) joining them, and which at speeds below the switching speed occupies in the cam plane an engaged decompression position, in which it projects beyond the cam base circle, and which can be disengaged into a n

Abstract: The invention relates to a pump nozzle (1) for injecting fuel into an internal combustion engine, especially a single cylinder diesel engine, comprising a piston foot (3), a pump cylinder (8), a pump piston (7), an intermediate disk (16), and an injection nozzle with a pressure spring (14) a pressure spring plate (15) and a nozzle needle (20). The inventive pump nozzle has a reduced construction length by virtue of the pressure spring (14) being offset to the side of the nozzle needle axis.

Abstract: A fuel injection device for diesel engines, with a nozzle holder (1), the pressure channel (2) of which is connected with the fuel injection pump on the one side, with the nozzle on the other side, comprises a nozzle body (3) which is connected with the nozzle holder (1) by means of a nozzle adjusting nut (10). For sealing purposes, there is an intermediate disk (13) between nozzle holder (1) and nozzle body (3). To seal the high-pressure connection in the region of the pressure channels (2, 4), there is a deformable metal sealing body which rests on a sealing surface and is held in a conical seat (19) in the region of the opening of the pressure channel (2) of the nozzle holder (1).

Abstract: This invention concerns a fuel injection system for an internal combustion engine in which a cut-off is provided to interrupt the fuel supply. The fuel injection system has a pump element with a suction bore (3) wherein the suction bore (3) of the pump element can be closed by means of a valve body (70 arranged on a flexible tappet to interrupt the fuel supply.

Abstract: An injection device for an internal combustion engine, especially a diesel engine, with a combustion chamber (16) for each defined by piston (2), cylinder and cylinder head (1), a multi-hole injection nozzle (5) and a shroud (3) projecting from the cylinder head (1) into the combustion chamber (16) and surrounding the nozzle (5) in such a way that a precombustion chamber is formed between shroud (3) and piston (2) at TDC, and a combustion process for an internal combustion engine, especially for a diesel engine, with an injection device as described hereinabove, wherein combined direct and swirl-chamber injection takes place in the vicinity of TDC.

Abstract: A venting device, with a vent valve (2), for the crankcase (1) of an internal combustion engine, especially for a one-cylinder diesel engine, is provided with a duct (9) for the gas-oil mixture downstream from the vent valve (2) in flow direction, said duct ending in an oil trap (3), a connection (4) via which the gas can reach the atmosphere being provided downstream from the oil trap (3).

Abstract: The invention relates to an internal combustion engine, in particular a one cylinder diesel engine, with a fuel injection system. The engine is provided with a mechanical control device comprising an actuator and a control element for automatic interruption of the fuel supply in case of a lack of lubricating oil. The control circuit actuator is equipped with a vacuum advance (15) with a membrane (12) for the pressurization of a closing tappet (10), in which a pressure chamber, formed by the membrane (12) and the vacuum advance (15), is open to the atmosphere. In addition, the control conduit (18) is equipped with a connection (20) on the side of the oil circuit and a connection (22) on the side of the crankcase, in order to produce a depression the control unit.

Abstract: A fuel injection pump for internal combustion engines, in particular one-cylinder diesel engines, has a pump piston (1) which can axially slide and rotate in a pump cylinder (13) with at least one fuel suction bore (14), a driving groove (6) arranged on the pump piston (1) parallel to the piston longitudinal axis, and geometrical connection between the front side (4) and the outer surface of the pump piston (1). In order to hydrodynamically regulate the optimum injection beginning during start, idle running and highest speed of rotation, a narrow slot (2,7) is provided as geometrical connection.

Abstract: In an internal combustion engine, especially a multi-cylinder four-stroke diesel engine with split cast crankcase comprising two half-shells (1a, 1b) clamped together by fastening studs, with the joint plane running in the direction of the crankshaft and cylinder axis, there are disposed, in recesses provided therefor in the half shells (1a, 1b), separate cylinder sleeves (2), each closed at its top end by a separate cylinder cover (10) with a circumferential rim. These cylinder covers (10) are completely clamped sealingly between the crankcase half shells (1a, 1b). A method for making such an internal combustion engine is also described.

Abstract: A rocker arm (1) for the valve control of an internal combustion engine, in which the rocker arm is manufactured from stamped, deep drawn and subsequently heat treated, deep drawing sheet metal and characterized by the fact that the rocker arm (1) has opposite side pieces, in between a rolling element (10) is acommodated in a rotation position.

Abstract: An injection pump for a diesel engine has a pump cylinder with a pump piston slideably mounted therein. The piston has a broadened foot portion. A cam is mounted on the camshaft and a rocker arm is mounted on a pivoting axis and has a camshaft end and a pump-side end. Means are provided for holding the camshaft end of the rocker arm in substantial contact with the cam. The pump-side end of the rocker arm has contact means for contacting the piston and moving the piston in the cylinder as the rocker arm is pivoted. The contact means includes means for loosely coupling the pump-side end of the rocker arm to the foot portion of the piston.