Abstract: Injection system for the intermittent introduction of a fuel-liquid mixture into the combustion spaces of an internal-combustion engine with a common-rail pressure reservoir. Lines (16, 30) lead to control spaces (15, 22) of control valves (1). Control space (15) is joined selectively with the common-rail pressure reservoir or a line (18) with a pressure p0 or a line with a pressure p1 for control of injection quantities of the fuel-liquid mixture. Control space (22) is joined selectively to the common-rail pressure reservoir or to a line with pressure p2 or to a line (33) with pressure p0 for control of the liquid fraction of the injection quantity.

Abstract: An accumulator-type injection system having an injector and a control valve connected with the injector for controlling injection. In a first switching position of the control valve, an injector body fuel duct, which leads in front of the orifices, is connected with a fuel accumulator. In a second switching position, a passage is opened up by the control valve which connects the fuel duct with a return flow. As a result, in the injection pauses, the fuel pressure in front of the orifices can be lowered approximately to the ambient pressure so that the inclusion of water in front of the orifices takes place at a low pressure.

Abstract: A cylinder head has four valves and an injection valve arranged in the center thereof for an internal-combustion engine particularly for a diesel engine. The cylinder head includes a closed runner which is arranged concentrically with respect to an axis of the injection valve and which connects a compression bottom with a top side of the cylinder head. Coolant bores extend in direct proximity to inlet and outlet ports from a circumference of the cylinder head to an interior water space of the cylinder head.

Abstract: A process and a suitable arrangement for cooling diesel engine exhaust gases in an exhaust gas recirculation system is provided. In order to be able to avoid a contamination of the heat exchanger as well as a resulting required regenerating of the latter in the case of a cooling of the hot exhaust gas flow over a large temperature range, the cooling of the hot exhaust gas flow is carried out in at least two steps in that the exhaust gas flow flows successively through two heat exchangers which are each adapted to the corresponding cooling temperature range. By adapting the heat exchangers to specific small temperature ranges, even hot exhaust gas flows of up to 800.degree. C. can be cooled to a desired low temperature by the series connection of a corresponding number of different heat exchangers, without causing significant contaminations of the exhaust gas cooling arrangement by exhaust gas particles.

Abstract: An exhaust gas pipe for multicylinder, supercharged internal combustion engines has an outer gas-tight casing (2) and an inner hot gas pipe (1) made up of segments (5) of cast parts securable by screws (8) which project into the casing (2) from the outside.

Abstract: An arrangement limits a fuel supply from a fuel pressure reservoir by way of a controllable injection valve into the combustion space of an internal-combustion engine. The fuel flow is interrupted as a function of the forces applied to a spring-prestressed valve separating piston in the event of an outlet-side pressure drop. A reliable limiting of the maximal injected fuel quantity is achieved by providing a flow-through opening penetrating the separating piston with a closing device. This flow-through opening can be closed as a function of the displacing direction of the separating piston. If the displacing device closes the flow-through opening in the starting position, during the injection phase and in the piston end position, the limiting valve will continuously interrupt the fuel flow in the case of an outlet-side pressure drop.

Abstract: A support housing for the fastening of the exhaust gas turbochargers of an internal-combustion engine is provided. The support housing encloses a hollow space which is used for receiving the turbines of the exhaust gas turbochargers while the compressors are situated outside the hollow space. In order to simplify the manufacturing and assembly and to reduce the costs, bearing housings of the exhaust gas turbochargers are integrated in the support housing. The manufacturing and the assembly may also be simplified and rendered less expensive by the fact that the support housing is divided into two symmetrical housing parts along a plane extending through the perpendicular axis in the center of the support housing. In this case, the two housing parts are preferably constructed to be centrically symmetrical with respect to the central perpendicular axis.

Abstract: An injection system provides an intermittent supply of fuel mixture into combustion spaces of an internal-combustion engine. The system includes a valve and a pipe by way of which a control space in the injection valves may alternatively be acted upon by a pressure. The control space is formed by a valve member and a piston. A first pressure spring presses the valve member onto an injection opening, and a second pressure spring presses the piston away from the injection opening.

Abstract: The production of harmful substances during the operation of multi-cylinder diesel engines is reduced by separating the cylinders of the engine into two groups in combination with an exhaust gas return from one group to the other. The first group includes a plurality of the cylinders (2 to 6). The second group includes at least one cylinder (7), which is separated from the first group as far as combustion is concerned. A first fresh air suction intake (9) supplies fresh air to the group of first cylinders (2 to 6). An exhaust gas return device (24) feeds either directly or indirectly exhaust gas from the at least one second cylinder (7) through the first fresh air suction intake (9) to the group of first cylinders (2 to 6). A second fresh air suction intake (10) supplies fresh air to the second group of cylinders (7). The second fresh air suction intake (10) may also receive some exhaust gas which is then combusted by an additional fuel supply in the second fresh air suction intake (10).

Abstract: Two components, such as an engine block (1) and a gear case (2), are coupled to each other by at least two flexible coupling links (7, 8) and by a rigid coupling link (10). One end of each flexible coupling link is connected to the engine block or gear case by a first screw connector (11, 11A, 11B) having a threaded bolt (13) passing through a twin cone (16) acting as a centering member. The conical surfaces of the twin cone centering member (16) cooperate with respective conical surfaces (12) in the gear case (2) and in an expander ring (17) bearing with its outer surface against an inner surface of a hole in the coupling link (7, 8) or an intermediate bushing in the coupling link, whereby the force transmitting connection is accomplished with radial clamping forces. The cooperation of the conical surfaces compensates for alignment tolerances and uneven stress distributions are avoided.

Abstract: An embedded unit for a concrete foundation is used for the fixing of elastic machine bearing elements in the concrete foundation. The embedded unit is constructed from a plurality of rods and metal sheets which are fitted together while forming damping joints. This type of an embedded unit dampens the machine vibrations entering into the foundation, may have a high impedance, and can be sufficiently anchored in concrete material.

Abstract: An exhaust system for a supercharged internal-combustion engine in which of the exhaust-gas-carrying components, the exhaust gas pipes leading from the cylinder outlets to the turbines, or the turbines, or the turbines and the exhaust gas pipes are arranged jointly in an exhaust-gas-tight housing. Openings in the exhaust-gas-carrying components cause the space formed between the exhaust-gas-carrying components and the housing to be filled with exhaust gas. By way of a bypass pipe which is connected with the space and leads to the turbine, exhaust gas can be blown off from the space. A blow-off valve is arranged in the bypass pipe.

Abstract: Support apparatus for the exhaust pipe of an internal combustion engine in which three suspension rods pivotably support the pipe at one longitudinal station and two others engage the pipe at a second longitudinal station. An external radial force is applied to the pipe preferably at a suspension rod at the second station. Specific and constant bearing forces determined by the size of the external force occur essentially independently of the temperature of the exhaust pipe and these forces hold the exhaust pipe in a secure state, free of play, without introducing damaging stresses. In addition, the position of the exhaust pipe at a specific temperature can be obtained by suitable selection of the arrangement and length of the suspension rods.

Abstract: A cooling system for a supercharged internal-combustion engine has a high-temperature and a low-temperature circulating system, in which two charge air coolers, through which coolant of different temperature levels flows, are provided for cooling the charge air in two stages. The high-temperature circulating system comprises a main branch with the internal-combustion engine and a high-temperature recooler which is connected in series with it. So that the total quantity of coolant may be kept low and a high degree of heat exchange can be achieved while the arrangement of the pipes is simple, the coolant quantity flowing out of the secondary circulating system is admixed to a coolant flow leading to the internal-combustion engine, and the total coolant flow flowing out of the internal-combustion engine is then guided to the high-temperature recooler.

Abstract: A throttle flap construction (12) is installed in an exhaust gas duct (11). For the installation the duct wall is provided with a radially facing, axially extending narrow slot (20) centrally provided with a circular opening so that a flap disk (14) may pass radially inwardly through the slot while a bearing portion (17) of the flap disk (14) may pass through the central circular opening. During installation, the flap disk (14) extends vertically when the throttle unit is inserted, a cover (16) is bolted to a flange (11A) surrounding the slot (20) and the central opening (21). Thus, the duct (11) can be properly sealed without cutting entirely through the duct in a radial plane.

Abstract: An exhaust gas duct for a row of a plurality of combustion engine cylinders has an exhaust pipe section extending alongside the cylinders and a cooling housing in which the exhaust pipe section is mounted. The cooling housing has a middle longitudinal section and two end sections, one of which is a cover and the other is a mounting connector duct end ring. The middle section has substantially circular end portions with cooling liquid flow ducts therein and a flange portion for mounting to a cylinder head. The middle section is made of extruded standardized stock of light metal which facilitates the manufacture and assembly of the duct. A compact structural volume is also achieved thereby. The extruded stock material assures a good dimensional accuracy, a high surface quality, and good sealing characteristics.

Abstract: An exhaust gas turbocharger having rotor runners disposed in roller bearings protects the roller bearings from shocks and vibrations by a pressure-oil-filled oil film damper. By a shut-off device arranged in the main lubricating oil duct, the lubricating oil supply of the roller bearings is shut off when the rotor runners are stopped. However, the pressure oil supply of the oil film damper remains operative so that the oil film damper retains its operability.

Abstract: A sealing device has two circumferentially fixed sealing rings which, together with a common ring groove in a turbo-machine shaft for both sealing rings, result in a labyrinth seal between the sealing gas space and the lubricating-oil relief space and between the sealing gas space and the rotor disk space. In the event of a disturbance of the sealing gas supply, both sealing rings are supported at a gradation of a shaft lead-through bore which prevents a total wearing-out of the sealing rings.

Abstract: An interior pipe carrying exhaust gases is arranged in a cooled housing 13. The interior pipe fastened to the housing 13 comprises individual sections 18 arranged in series while leaving expansion joints. The length of one section 18 corresponds approximately to the cylinder spacing of the piston internal-combustion engine. At the circumference, at the halfway point of its length, each section 18 has a plug-type connection 20 interacting with the housing. This plug-type connection 20 is arranged approximately opposite the lead-in point of an exhaust stub 15 of a cylinder interacting with the section 18. The plug-type connection 20 comprises a receiving device which, in a cooled manner, is arranged in the housing and a corresponding plug 23 connected with the section 18 of the interior pipe.

Abstract: The invention relates to an arrangement for the automatic removal of water collecting in a fuel filter having a water separator. The evacuation takes place by means of a piston acted upon by a pressure medium, preferably a fuel pressurized by the pressure of the fuel pump, the piston being guided in the container of the fuel filter containing the water. It is particularly advantageous for an already existing drive to be usable for producing the pressure medium and that therefore a simple and inexpensive solution is offered for the removal of the water.