Abstract: A fuel injector is provided that includes various precise configuration parameters, including dimensions, shape and/or relative positioning of fuel injector features, resulting in improved efficiency of fuel flow through the fuel injector.

Abstract: A fuel injector is provided that includes various precise configuration parameters, including dimensions, shape and/or relative positioning of fuel injector features, resulting in improved efficiency of fuel flow through the fuel injector.

Abstract: A fuel injector is provided that includes various precise configuration parameters, including dimensions, shape and/or relative positioning of fuel injector features, resulting in improved efficiency of fuel flow through the fuel injector.

Abstract: The invention relates to a piston (1), comprising a ring carrier (2) and a glass piston (3) for observing processes in a combustion chamber (B) of an internal combustion engine, wherein the glass piston (3) is placed upon the ring carrier (2) and is securely connected thereto in the region of an inner casing surface (8) of the ring carrier (2). In order to avoid overly high heat strain in the glass piston (3), the glass piston (3) is connected to the ring carrier (2) via at least one form-fit connection (20), and preferably via a force-fit connection (30).

Abstract: The invention relates to a piston (1), comprising a ring carrier (2) and a glass piston (3) for observing processes in a combustion chamber (B) of an internal combustion engine, wherein the glass piston (3) is placed upon the ring carrier (2) and is securely connected thereto in the region of an inner casing surface (8) of the ring carrier (2). In order to avoid overly high heat strain in the glass piston (3), the glass piston (3) is connected to the ring carrier (2) via at least one form-fit connection (20), and preferably via a force-fit connection (30).

Abstract: 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 being stored in a database, and with flame light signals of the combustion in the combustion chamber being detected and compared with the stored sample signals, and with an evaluation of the state being output in the case of coincidence between the measured and stored signal patterns. In order to enable the monitoring of the combustion in the simplest possible way the sample signals in the database are stored with the assigned emission values and an evaluation of the state of the combustion is performed with respect to the obtained emissions in the case of coincidence between the measured and stored signal patterns for the combustion chamber of the respective cylinder.

Abstract: A fuel injector is provided that includes various precise configuration parameters, including dimensions, shape and/or relative positioning of fuel injector features, resulting in improved efficiency of fuel flow through the fuel injector.

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 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 being stored in a database, and with flame light signals of the combustion in the combustion chamber being detected and compared with the stored sample signals, and with an evaluation of the state being output in the case of coincidence between the measured and stored signal patterns. In order to enable the monitoring of the combustion in the simplest possible way the sample signals in the database are stored with the assigned emission values and an evaluation of the state of the combustion is performed with respect to the obtained emissions in the case of coincidence between the measured and stored signal patterns for the combustion chamber of the respective cylinder.

Abstract: The invention relates to a measuring device (1) for detecting processes in the combustion chamber of an internal combustion engine, comprising a pressure sensor (3) which is arranged to be inserted into a bore hole of the internal combustion engine which opens into a combustion chamber, with the pressure sensor (3) comprising at least one optical light guide (6) optically opening into the combustion chamber, and with an optical injection element (8) being arranged preferably in the opening region into the combustion chamber. In order to enable performing simultaneously a pressure measurement and optical combustion chamber monitoring at the same place of the combustion chamber, it is provided that the optical injection element (8) is soldered into a pressure membrane (5) of the pressure sensor (3) or into the housing (2) of the pressure sensor (3).

Abstract: A spark plug includes a longitudinal bore formed in a housing for receiving an insulator, with the housing having a first bore for receiving a pressure measuring device and a second bore for receiving a light guide which opens into the combustion chamber.

Abstract: The invention relates to a solid-state laser, comprising a resonator (1) with a monolithic structure consisting of a laser medium, on which a passive Q-switch (12) and at least one resonator mirror are directly formed, and comprising several laser diodes (22) which, as a pump medium, radiate into the resonator (1) from the side. A simple and robust configuration with simultaneous high efficiency is achieved in such a way that the monolithic resonator (1) is held at one end in a first holding plate (31) and is held at its other end in a second holding plate (32), and between the first and second holding plate (31, 32) at least one carrier ring (21) is mounted which carries several laser diodes (22) which are passively wavelength stabilized.

Abstract: The invention relates to a measuring device (1) for detecting processes in the combustion chamber of an internal combustion engine, comprising a pressure sensor (3) which is arranged to be inserted into a bore hole of the internal combustion engine which opens into a combustion chamber, with the pressure sensor (3) comprising at least one optical light guide (6) optically opening into the combustion chamber, and with an optical injection element (8) being arranged preferably in the opening region into the combustion chamber. In order to enable performing simultaneously a pressure measurement and optical combustion chamber monitoring at the same place of the combustion chamber, it is provided that the optical injection element (8) is soldered into a pressure membrane (5) of the pressure sensor (3) or into the housing (2) of the pressure sensor (3).

Abstract: The invention relates to an internal combustion engine with a laser ignition device (1), Q-switched, pumped solid-state laser with a pulsed pumped light source (30), a solid laser crystal (2), enclosed in a resonator, a Q-switch (4), for increasing the power density, at least one output mirror (6) and a focussing device (7), by means of which the laser beam (26) may be focussed in a combustion chamber.

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: The invention relates to a spark plug (1), comprising a longitudinal bore (3) formed in a housing (2) for receiving an insulator (9), with the housing (2) having a first bore (10) for receiving a pressure measuring device (11). In order to enable performing simultaneous pressure and optical measurements in the combustion chamber in the simplest possible way and without changing the cylinder head it is provided that a second bore (21) is arranged in the housing (2) for receiving a light guide which opens into the combustion chamber.

Abstract: The invention relates to an internal combustion engine with a laser ignition device (1), Q-switched, pumped solid-state laser with a pulsed pumped light source (30), a solid laser crystal (2), enclosed in a resonator, a Q-switch (4), for increasing the power density, at least one output mirror (6) and a focussing device (7), by means of which the laser beam (26) may be focussed in a combustion chamber.

Abstract: An optical sensor or emitter (1) used for monitoring combustion processes in a combustion chamber is provided with an optical element (2) on a side facing the combustion chamber and an optical fiber or fiber bundle (3) on a side opposite the combustion chamber, the optical element and optical fiber/fiber bundle being jointly held in a metal sleeve (4). An annular gap filled with solder material (5) is provided between the optical element (2) and the inside of the metal sleeve (4).

Abstract: An optoelectronic measuring device for monitoring combustion processes in the combustion chamber of an internal combustion engine during operation includes optical sensors assigned to the combustion chamber and connected to an evaluation unit, the sensor ends on the side of the combustion chamber being essentially positioned in a plane and the sensors being aligned so that the individual viewing angles of the sensors will uniformly cover at least one predefined measuring sector of the combustion chamber. A simple way of localizing the origin of engine knocking in the combustion chamber is ensured by positioning the optical sensors in an essentially cylindrical component projecting into the combustion chamber with the sensor ends positioned essentially radially along the wall of the component.

Abstract: The invention relates to an optical sensor or emitter (1) used for monitoring combustion processes in a combustion chamber, preferably during operation of an internal combustion engine, which is provided with an optical element (2) on the side facing the combustion chamber and an optical fiber or fiber bundle (3) on the side opposite of the combustion chamber, which are jointly held in a metal sleeve (4). In accordance with the invention an annular gap filled with solder material (5) is provided between the optical element (2) and the inside of the metal sleeve (4).