Abstract: A laser ignition device for an internal combustion engine includes a laser spark plug having a laser-active solid and an outlet window for a laser pulse, and an antechamber. Certain sections of the antechamber are delimited by the outlet window and the antechamber has at least one opening to a combustion chamber of the internal combustion engine. A blow-in device is provided, an outlet opening of the blow-in device ending in the antechamber.

Abstract: An internal combustion engine is operated with direct fuel injection into the combustion chambers. Furthermore, the internal combustion engine is operated with sub-optimum ignition angle efficiency and an apportionment of a fuel quantity, which is to be injected before the start of a combustion, into at least two partial injections. A torque loss which results from the sub-optimum ignition angle efficiency and/or from the apportionment of the fuel to be injected is compensated by means of an increased charge of the combustion chambers. The fuel quantity and the charge are coordinated with one another in such a way that the air ratio lambda of the combustion chamber charges is greater than 1.

Abstract: An ignition laser for an internal combustion engine is provided, wherein the combustion chamber window is connected to a housing of the ignition laser in a gas-, pressure-, and temperature-resistant manner.

Abstract: A laser spark plug, e.g., for an internal combustion engine of a motor vehicle or a heavy-duty gas engine, has an antechamber for receiving an ignitable medium and a combustion chamber window which separates the antechamber from a part of the laser spark plug facing away from the combustion chamber. At least one flow-guiding element is provided in the antechamber and is situated in such a way that it deflects a fluid flow, which occurs in the antechamber and moves toward the combustion chamber window, into a radially inner direction.

Abstract: An ignition laser includes a laser-active solid body, a housing, and a combustion chamber window. The heat value of the ignition laser is settable in accordance with the requirements of the internal combustion engine.

Abstract: In an internal combustion engine, fuel is directly injected into at least one combustion chamber at least during a compression stroke in such a way that a stratified mixture is present in the combustion chamber. This mixture is then externally ignited. The fuel is introduced during the compression stroke by at least one main injection and an ignition injection, the ignition injection taking place immediately before an ignition and producing at least essentially no torque.

Abstract: A socket wrench is described for installing a laser ignition system in an internal combustion engine, the socket wrench including a drive section and an output section that are situated axially one after another. The output section has a longitudinal recess.

Abstract: A laser spark plug, in particular for an internal combustion engine of a motor vehicle is described. A fixing arrangement is provided in an end region of the laser spark plug facing the combustion chamber. The fixing arrangement allows an optical component to be detachably fixed to the laser spark plug.

Abstract: An ignition laser, includes a laser-active solid-state body, a housing and a combustion chamber window, the housing having an inner sleeve and an outer sleeve. An insert is provided between the inner sleeve and the outer sleeve, the insert and the combustion chamber window being joined sealingly and integrally.

Abstract: An internal combustion engine, in particular a gas engine, is described, which is equipped with a laser ignition device, and the combustion chamber has an essentially point-symmetrical shape at the ignition point.

Abstract: A spark plug is described, for an internal combustion engine, having a prechamber for accommodating an ignitable medium, and having a laser device for applying laser radiation to an ignition point situated in the prechamber. The laser device has a laser-active solid body having a passive Q-switch.

Abstract: A laser ignition device is provided for an internal combustion engine, having an ignition laser in which a combustion chamber window has an orifice plate arranged in front of it.

Abstract: An ignition laser is provided for an internal combustion engine, in which the combustion chamber window is connected to a housing of the ignition laser in a gas-resistant, pressure-resistant, and temperature-resistant manner. Furthermore, a pressure relief bore is present which effectively prevents a pressure increase in the housing of the ignition laser.

Abstract: A laser spark plug device for an internal combustion engine includes a prechamber for receiving an ignitable medium and at least one overflow channel providing a fluid connection between an internal space of the prechamber and an external space surrounding the prechamber. The at least one overflow channel is configured such that when a fluid flows through the overflow channel into the internal space of the prechamber, the result is a fluid flow having at least one eddy which rotates on an eddy axis forming an angle of more than approximately 45° with a longitudinal axis of the laser spark plug device.

Abstract: A method for operating a laser device, which has a laser-active solid-state body including a preferably passive Q switch, in which pumped light is applied to the laser device in order to generate a laser pulse. The laser device and/or an optical link between the laser device and a pumped light source supplying the pumped light is at least partially acted upon by an optical test pulse in order to check the integrity of a/the optical link between the laser device and a pumped light source supplying the pumped light.

Abstract: A method for operating a laser device which has a laser-active solid and a preferably passive Q-switch in which the laser device is acted upon by pumped light for generating a laser pulse. According to the present invention, the pumped volume of the laser device acted upon by a pumped light, in particular of the laser-active solid, is changed.

Abstract: A fiber optic connector system is described which includes a plug and a socket. The optically active surfaces of the plug and socket are automatically protected from soiling as soon as the connection is opened.

Abstract: An ignition device, in particular for an internal combustion engine of a motor vehicle, having a laser device for generating laser pulses, and having an optical fiber device which is at least optically connected to the laser device for supplying the laser device with pumped light. The optical fiber device is configured and situated in the region of the laser device in such a way that radiation incident in the region of the laser device and/or in the region of a combustion chamber associated with the laser device may be injected into the optical fiber device. The disclosed configuration of the optical fiber device advantageously allow the radiation which is injected into the optical fiber device to be analyzed, in particular using a detector which is remotely situated, without having to provide additional, separate optical fiber devices for the radiation to be analyzed, because the radiation to be analyzed may be conducted directly via the same optical fiber that is already used for supplying pumped light.

Abstract: A laser module includes a housing and at least one laser device situated in the housing for generating laser pulses. The laser module has at least one primary sealing region and a secondary sealing region that is situated at least partially in the primary sealing region, and the laser device is situated within the secondary sealing region.

Abstract: A laser device of a so-called laser ignition is provided, in which the heat dissipation is improved between a combustion chamber window and a housing, and the cooling or temperature of the combustion chamber window is able to be adjusted within broad limits by simple modifications.