Abstract: The invention relates to a parallel crank drive (10), particularly for an internal combustion engine (11) having variable compression ratio, having: a first and a second clutch body (20, 21) that can each be connected to a first or second shaft (14, 19); —at least one clutch element (22) rotatably supported on both clutch bodies; —a housing (23) encompassing the clutch bodies and clutch elements. The invention further relates to an internal combustion engine having variable compression ratio, having: a pivotally supported crankshaft (14); —drive shaft (19); —parallel crank drive (10) between the crankshaft and drive shaft; —a housing (23) encompassing the parallel crank drive. The invention further relates to a manual transmission, particularly for an internal combustion engine (11) having variable compression ratio, having: an input shaft (19) that can be connected to a pivotally supported crankshaft (14); the parallel crank drive (10) between the crankshaft and input shaft.

Abstract: An internal combustion engine with a variable compression ratio is provided. The engine can have a crankshaft that is pivotably supported, a flywheel fixed on the crankshaft, and a connection shaft that is arranged between the crankshaft and an input shaft of a shift transmission.

Abstract: A drive system with an 8-gear gearbox for a motor vehicle with a driving machine 11, more particularly an internal combustion engine, comprising a distribution gearbox 12 which is drivingly connected to the driving machine 11 and comprises three members, as well as two 2-gear partial gearboxes 17, 18, wherein a first member of the distribution gearbox 12 is drivingly connected to the internal combustion engine 11 and the two other members of the distribution gearbox 12 are each connected to an input shaft 20, 28 of one of the two 2-gear partial gear-boxes 17, 18 and wherein, between two members of the distribution gearbox 12, there is provided a switchable bridging coupling 19 and wherein one output element of each of the two 2-gear partial gearboxes 17, 18 is permanently drivingly connected to a driven gear 38, 39 or to a driven shaft 40.

Abstract: The invention relates to a drive system in which components for a front transverse arrangement in a motor vehicle, such as the clutch, shaft, and transmission, are disposed in a casing that is preferably pot-shaped. The oil is centrally supplied via the shaft. An effective centrifugal force allows a certain oil level to be established within the casing, said oil level once again being drained by accordingly discharging oil, preferably parallel to the shaft.

Abstract: The invention relates to a test bed (1) for elevation simulation for a test specimen (11), in particular, for an internal combustion engine (11) with a supply chamber (20) in which a supply system (21) is arranged, a testing chamber (10) structurally separate from the supply chamber (20) for holding the test specimen (11), wherein the testing chamber (10) is in fluid connection with the supply chamber (20) and thus conditioning of the settings for the test specimen (11) to be tested can be achieved.

Abstract: In order to improve a combustion process of a motor vehicle, in particular with regard to emissions and/or the development of noise, a method for regulating an injection profile is provided, in which method a fuel is injected directly into a combustion chamber, wherein the regulation brings about a change in the injection profile (23) at least during a first work cycle on the basis of at least one parameter which is recorded during the first work cycle. Furthermore, a corresponding direct-injection internal combustion engine is provided.

Abstract: The present invention relates to an internal combustion engine (1) with an SCR catalytic converter (11) and with a condition monitor (10) of the NH3 level of the SCR catalytic converter, wherein the condition monitor is connected to a first (14) and a second detecting module (15), each of which determines the NH3 level in a different way. In addition, a method for the determination of the NH3 level of an SCR catalytic converter is claimed.

Abstract: The present invention relates to a drive mechanism of an electric vehicle that is realized only by means of one or more electric motors that are connected to at least one storage battery, wherein a generator is provided that can be connected for supplying energy to the drive mechanism, wherein the generator is coupled to a Wankel engine that drives only the generator when needed, but delivers no driving power as torque to the drive train of the electric motor or motors of the drive mechanism. A method for operating an electric vehicle is also presented.

Abstract: The present invention relates to a method for adjusting a mass flow of an exhaust gas return of an internal combustion engine, taking into consideration a NOx behavior, wherein a controlling system provides a coupling of a virtual NOx determination with a real NOx control. Furthermore, an internal combustion engine with appropriate controlling means is proposed.

Abstract: A variable exhaust gas flow deflector for an internal combustion engine is disclosed. The deflector can include a blade located at least partially within an exhaust gas flow of the engine, the blade having a first position and a second position. The blade can move between the first position and the second position as a function of at least one parameter and/or condition of the exhaust gas and/or the internal combustion engine.

Abstract: An exhaust gas recirculation system for an internal combustion engine is disclosed. The exhaust gas recirculation system can include a first turbocharger and a second turbocharger with a particulate filter located between the two turbochargers. The first turbocharger can have a first exhaust turbine and a first charger while the second turbocharger can have a second exhaust turbine and a second charger. The particulate filter can be located between the first exhaust turbine and the second exhaust turbine and thereby remove particulates from an exhaust gas before it reaches the second exhaust turbine. In some instances, an exhaust gas recirculation line can be included and have an inlet that is located downstream from the particulate filter. In addition, the exhaust gas recirculation line can have an outlet that is located between the first charger and the second charger, or in the alternative downstream from the first charger.

Abstract: An internal combustion engine has at least one cylinder, wherein in the cylinder there is a piston, which has a recess. Furthermore, the internal combustion engine has a cylinder head, which has the shape of a roof complementary to the roof-shaped geometry of the piston with a first and second side converging in the shape of a gable, with the piston and the cylinder head defining a top side and a bottom side of a combustion chamber. The internal combustion engine has an ignition device, which is arranged at least approximately in the center in the roof shape. The cylinder further has preferably two inlet valves, which are arranged in the first side, and also preferably two outlet valves, which are arranged in the second side. The recess extends past both sides, wherein the recess includes at the side approximately vertically descending sides and a base. The piston further has at least two, preferably four quench zones, which are at least partially separated from each other by valve pockets for valves.

Abstract: A method of determining the fuel consumption of an internal combustion engine 12, more particularly when operated on a test rig, wherein fuel is supplied in a circuit to the internal combustion engine and discharged therefrom and wherein a quantity of fuel is supplied to the circuit 11 via a branch line 22 from a fuel tank 23 and measured in the branch line, wherein temperature-related changes in the volume of the fuel are determined in the circuit 11 and wherein the consumed quantity {dot over (m)}S determined in the branch line 22 is corrected by a corrective quantity {dot over (m)}K corresponding to the temperature-related changes in volume in the circuit.

Abstract: An internal combustion engine according to the invention comprises at least one cylinder and at least one valve provided for a gas exchange and having a first end comprising a valve head, and a second end, characterized in that a valve bearing has a length of a guidance area arranged for the guidance of a valve stem of at most 25%, preferably between 10 and 20%, and particularly preferably of less than 10% of a valve length.

Abstract: A fuel injection method according to the invention that utilizes an accumulator principle, particularly a common rail principle, is characterized in that fuel arriving from an accumulator, particularly a common rail, is conveyed to a primary side of the pressure booster at a first pressure such that a secondary side of the pressure booster is subjected to a pressure increase, and in that an opening and closing of an injection nozzle are realized with the pressure in a pressure chamber for the injection nozzle, by displacing a closing element that acts upon the injection nozzle, particularly an injector needle, by means of a hydraulically controlled pressure change.

Abstract: The invention relates to a method for operating a motor vehicle exhaust-gas aftertreatment system (1), in which oxygen is fed to and removed from the oxygen tank (8) of an exhaust-gas aftertreatment component (7). According to the invention, the oxygen quantity in the oxygen tank (8) is determined and a rich-lean cycle is influenced in accordance with the determined oxygen quantity. The invention also relates to a motor vehicle exhaust-gas aftertreatment system (1), which permits a temperature regulation of the oxygen tank (8) and/or an uninterrupted desulphation during the transition between a rich operation and a lean operation.

Abstract: A method of measuring oxygen-containing nitrogen components including nitrogen dioxide in exhaust gases of internal combustion engines, wherein an exhaust gas sample is taken from a removal point 10 at the exhaust gas pipe 1 and is guided to at least one measuring instrument by means of a removal line, wherein, for the purpose of measuring the oxygen-containing nitrogen components, there are provided a separate removal point 10 and a removal line 11 and that the exhaust gas sample for measuring the oxygen-containing nitrogen components is set to a temperature at which a reaction between the nitrogen dioxide and soot is low.

Abstract: The invention relates to a contoured body having an additional cam contour for effecting a valve control of a piston combustion engine that is used, in particular, for an internal exhaust gas recirculation.

Abstract: The invention relates to a cylinder head (1) of an at least one-cylinder internal combustion engine with direction injection of a motor vehicle with a flame deck (2) and with an oil deck (3). An intermediate deck (4) is situated between the flame deck (2) and the oil deck (3), and at least one injector pipe (5) extends from the flame deck (2) up to the oil deck (3). The intermediate deck (4) joins a lower area of an injector pipe (5), particularly an injector dome (6) that is situated approximately centrally in the area of the flame deck (2). When viewing from the flame deck (2), the intermediate deck (4) extends outward in a concave-like manner so that the intermediate deck (4) joins a lateral wall (7) in a range of 40% to 60% of the distance between the flame deck (2) and the oil deck (3).

Abstract: In order to improve a combustion process of a motor vehicle, in particular with regard to emissions and/or the development of noise, a method for regulating an injection profile is provided, in which method a fuel is injected directly into a combustion chamber, wherein the regulation brings about a change in the injection profile (23) at least during a first work cycle on the basis of at least one parameter which is recorded during the first work cycle. Furthermore, a corresponding direct-injection internal combustion engine is provided.