Abstract: The invention relates to a method for evaluating the state of a fuel/air mixture and/or the combustion in a combustion chamber of an internal combustion engine, with sample signals of flame light signals, preferably the flame intensity (FI), with associated mixture states being saved to a database, with flame light signals, preferably the flame light intensity (FI), of the combustion in the combustion chamber being detected and thus being compared with the saved sample signals, and with conclusions being drawn on the state of the mixture in the combustion chamber in the case of coincidence between measured and saved signal patterns. In order to enable a simple and precise monitoring of the mixture state and the combustion it is provided that a pressure measurement is also performed in the cylinder simultaneously with the detection of the flame light signals.

Abstract: A pallet system with a setup pallet (3) for receiving a test component (70) and with a setup pallet receptacle (4) includes a pallet docking plate (64) with a number of pallet media connections (65, 66) on the setup pallet (3), and a receptacle docking unit (10) having a receptacle docking plate (20) with a number of matching receptacle media connections (30, 32) on the setup pallet receptacle (4). The pallet docking plate (64) and/or the receptacle docking plate (20) are/is arranged movably and a movable docking plate (20, 64) can be fed toward the other docking plate (64, 20).

Abstract: A rotating disc diluter (1) has a rotatable rotary element (4) which carries surface-accessible transfer volumes (9, 10) which along their common path of movement alternately glide over feed and discharge ports (11-18) for an undiluted fluid flow on the one hand and for a dilution fluid flow on the other hand. For the simple widening of the usable dilution rate range, the rotary element (4) has at least two rows of transfer volumes (9, 10) on different paths of movement, the associated feed ports (11-14) of which for the undiluted fluid flow and/or for the dilution fluid flow can be separately controlled.

Abstract: A test stand arrangement includes at least one electric motor (4) connected to a test specimen for driving and/or loading the test specimen, and a control arrangement for the or each electric motor. In order to be able to create the connection of the drive train and vehicle simulation with the real, vehicle-specific combustion and dynamic behavior of the engine, at least one model for a multi-mass flywheel is implemented in the control arrangement, from which model at least a part of the control requirement for the or each electric motor is calculated and which model contains at least the two masses of the primary and secondary side of the multi-mass flywheel and a substitute model for the or each bow spring, and an algorithm is implemented in the control arrangement that analyzes the model for a multi-mass flywheel by means of an integrated time step method.

Abstract: A test stand sensor apparatus includes a sensor for acquiring data from the item under test and/or the environment, a power supply unit for converting electromagnetic radiation into electrical energy, and a unit for the wire-free transmission of sensor data and of a code which is characteristic of the sensor.

Abstract: A test stand for an internal combustion engine (1) is equipped with a drive (2) and/or load system (3), a force transmission device (4) with a system (5) for a non-destructive and play-free automatic coupling of the internal combustion engine (1) to the drive (2) and/or load system (3), and a sensor and evaluation system for automatically collecting and evaluating measurement variables. The system (5) for a non-destructive and play-free automatic coupling of the internal combustion engine includes an internally toothed and longitudinally slotted clamping sleeve (12) for receiving an element (13) of the internal combustion engine (1) in a form and force fitting manner, wherein the outer side of the clamping sleeve (12) is conically formed and interacts with a clamping collet (10) which is conically formed on the inside.

Abstract: A test stand assembly includes an electric machine (4) for driving and/or loading a test object (1), which is connected by a connecting shaft (2) having an adapter flange (3) to the electric machine (4). The assembly has a constant, predetermined moment of inertia, and the mass and the moment of inertia of the adapter flange (3) are selected in such a manner that the resonant frequency of the system formed of test object (1), adapter flange (3), connecting flange (2), and electric machine (4) for driving and/or loading the test object (1) lies between the idle frequency and the partial load frequency of the test object (1).

Abstract: A tire test system for tire tests under the most realistic conditions possible, however, including the possibility of widely-varied, simple and precisely reproducible parameters includes a track (6) contactable by at least one tire, as well as a positive guide (5) following this track, for example, in the form of at least one rail. In addition, a test trolley (2) is provided that is guided by a positive guide (5) and is autonomously driven and/or brakable independently of the tire(s), on which trolley at least one tire (1) is mountable, and which has equipment for driving and/or braking autonomously and independently of the test trolley (2).

Abstract: A method for the closed-loop control of the combustion position in an internal combustion engine with several cylinders, especially in a diesel engine, with at least one engine operating parameter being detected, wherein a cylinder-selective combustion position model which is arithmetic or based on characteristic values is provided which produces a relationship between at least one determined engine operating parameter and the combustion position, and the combustion position is determined on the basis of the determined engine operating parameter by the combustion position model for each cylinder.

Abstract: An exhaust emission control device is provided which is compact in size and has favorable dispersibility of exhaust gas from a muffling structure 2 to an oxidation catalyst 3. The muffling structure 2 arranged upstream of the oxidation catalyst in a direction D of gas flow has a dispersion plate 6 for dividing the interior of the casing 5 into dispersion chambers 7a and 7b upstream and downstream in the direction D of gas flow, respectively, and an inner pipe 8 inserted from outside of and into the chamber 7a and with a tip end fixed to the dispersion plate 6 and circumferentially formed with pores 9a, 9b, 9c and 9d having diameters gradually reduced in the order in the direction D of gas flow from upstream to downstream. The dispersion plate 6 facing the dispersion chambers 7a and 7b is formed with a plurality of radially-outward-larger-diametered and radially-inward-smaller-diametered pores 14, 15 and 16.

Abstract: A process for creating an executable configuration that can be run on a target system by selecting from a library a number of abstracted software components that are independent of the target system that implement individual functions of the target system and that are provided with a specified command interface and a specified interface to data channels, the selected software components that are independent of the target system are interconnected via their data channels for the realization of the automatization task to a model which is automatically transformed by a model transformation into a net list of nodes, attributes and edges, whereby the software components form the nodes, the initial parameters, the attributes and the data channels the edges of the net list, the software components that are independent of the target system are transformed into software components dependent on the target system, the software components that are dependent on the target system are instantiated at the target system and p

Abstract: An internal combustion engine has a crankcase for a plurality of cylinders, which has hollow vertical reinforcements in the area of the side walls of the crankcase in the area of the main bearing planes, at least a part of the vertical reinforcements being implemented as oil recirculation passages between cylinder head and crankcase. At least one vertical reinforcement which conducts blow-by gas has a connection for a blow-by gas line leading to an oil separator.

Abstract: An exhaust system including an exhaust emission control device with a post treatment unit (e.g., a selective reduction catalyst) for depuration of exhaust gas flowing therethrough is disclosed. The exhaust system includes a layout that introduces the exhaust gas into the post-treatment unit through a turnabout. An introductory part encircles an inlet end of the post-treatment unit and receives the exhaust gas through an exhaust inlet port from a direction substantially perpendicular to an axis of the selective reduction catalyst. The introduction part is formed with a first depression cambered away from the inlet end of the selective reduction catalyst and approaching toward the inlet end of the selective reduction catalyst as the first depression extends away from the exhaust inlet port and toward an introduction direction of the exhaust gas, thereby promoting uniformity of the exhaust gas flow entering the post-treatment unit.

Abstract: A system for measuring an injection process includes a measurement chamber filled with a fluid. An injection valve injects the fluid into the measurement chamber. A piston is arranged in the measurement chamber. A sensor generates a voltage which is a measure of a piston travel. The sensor is connected with an evaluation unit which continuously detects the piston travel in the measurement chamber. A rotary displacement pump arranged in a bypass channel to the measurement chamber is driven dependent on an existing volume difference. A pressure sensor is arranged in the measurement chamber. A heating element and/or a cooling device is/are arranged at the measurement chamber and is/are actuated by a controller so that an amount of energy introduced by the fluid injected by the injection valve and an amount of energy introduced by the heating element and/or the cooling device is substantially constant for every injection.

Abstract: The invention relates to a method for controlling the start-up phase of a motor vehicle driven by an internal combustion engine (12). The internal combustion engine (12) is started by an electrical machine (16) that can be operated as a motor, and there is a preferably automatically actuatable clutch (50) in the drive train (11) between the internal combustion engine (12) and the electrical machine (16). A faster start-up response can be achieved if the internal combustion engine (12) is driven by the electrical machine (16) when the clutch (50) is engaged during start-up, and if the clutch capacitance (MK) is reduced according to a defined parameter, preferably the engine speed, the time or the torque (ME) of the electrical machine (16) or similar.

Abstract: A test stand for an internal combustion engine is provided with a drive (2) and/or load system (3), a force transmission device (4) for connecting the internal combustion engine with the drive and/or load system (3), and a sensor and evaluation system for automatically collecting and evaluating measurement variables, wherein the force transmission device (4) comprises a system for detecting torque and rotation angle (6), which system is coupled to the internal combustion engine in a torsionally stiff manner, to achieve a coupling between the test object and the system for detecting torque and rotation angle, which coupling is improved for exact measurements, the force transmission device has at least one vibration damper (7) which is arranged on that side of the system for detecting torque and rotation angle (6) which is opposite to the internal combustion engine.

Abstract: A method for monitoring performance test stands having at least one load assembly, which is coupled to a test subject, such as an internal combustion engine, vehicle drive, or drive train, includes ascertaining multiple, possibly derived parameters, which characterize the current state of the test stand, and evaluating them automatically in regard to the stability of the operating state of the test stand. In order to allow reliable cognition of instabilities in performance test stands of greatly varying configurations in the typical control modes and the reliable online monitoring of the stability of the control circuits on performance test stands in real time with CPU use which conserves resources as much as possible, the standardized parameters are weighted and consolidated into a single index which is characteristic for the current state, and this index is provided for the display and/or as a control variable for the real-time test stand controller.

Abstract: A system for measuring an injection process in a combustion engine includes a tank configured to hold a fuel. A storage container is configured to hold a compressed fuel. At least one injection valve is arranged at the storage container. A fuel line in which a fuel conveying pump and a high-pressure fuel pump are arranged. The fuel conveying pump and the high-pressure fuel pump are configured to convey the fuel into the storage container. A first pressure sensor is configured to measure a pressure in the storage container. A detection device is configured to detect control data of the at least one injection valve. A measuring device is arranged in the fuel line. The measuring device is configured to measure a temporally resolved volumetric or gravimetric flow process. A processor is connected to the measuring device and to the first pressure sensor via a data transmission line.

Abstract: In order to make error recognition, for example, in cabling, in the stored data or in the data allocation, in the allocation of a sensor unit to sensor-relevant data for calibration of an analysis unit that is connected with a sensor unit possible, a sensor identification (6) is located in or on the sensor unit that can be polled by the analysis unit (4) and to which sensor-specific data are allocated in a storage unit (5), and a data carrier (7) is located in or on the sensor unit in which a second set of sensor-specific data are stored that can be read by the analysis unit (4) and can be compared with the first set of sensor-specific data of storage unit (5). Upon agreement of the first and second set of sensor-specific data, the measuring signals are transformed into measurement data by considering the sensor-specific data.

Abstract: A reservoir (4) for the working fluid of the saturation unit (3) is connected with a sampling section (1) by a pressure equalization line (9) of the gas that is loaded with solid particles, as a result of which a sucking back of the working fluid from the reservoir (4) into the sampling section (1) and other sections of the measurement environment that are connected with such are prevented, even in the presence of unfavorable pressure conditions.