Patent application number | Description | Published |
20080257294 | Internal Combustion Engine and Method for Operating an Internal Combustion Engine by Means of a Laser Ignition Unit - The invention relates to a method for operating an internal combustion engine including a fuel-injection unit and a laser ignition-unit. According to the invention, during a compression cycle of the internal combustion engine, fuel is injected into the combustion chamber by means of the fuel-injection unit in such a way that an ignitable, round, flat mixed region of fuel and air forms on a plunger and a predetermined period elapses between the end of the fuel injection and the start of ignition in order to form the round flat mixed region. Ignition then takes place within the flat round mixed region by means of the laser-ignition unit. | 10-23-2008 |
20090065608 | FUEL INJECTION SYSTEM - A fuel-injection system for direct injection of fuel into a combustion chamber through a combustion-chamber top arranged opposite a piston has a fuel injector which includes an actuable valve-closure member. The valve-closure member cooperates with a valve-seat surface to form a sealing seat. A multitude of spray-discharge orifices generates a spray cloud, each spray-discharge orifice generating a fuel jet, and the multitude of fuel jets generating the spray cloud in the combustion chamber. A first opening angle of the spray cloud in a first plane is greater than a second opening angle in a second plane extending perpendicular to the first plane. | 03-12-2009 |
20100000485 | IGNITION DEVICE FOR AN INTERNAL COMBUSTION ENGINE - An ignition device for an internal combustion engine includes at least one pump light source which supplies a pump light. In addition, a laser device is provided which generates a laser pulse for emission into a combustion chamber. A light guide device transmits the pump light from the pump light source to the laser device. Finally, a laser-active solid body, a passive Q-switch, an incoupling mirror, and an output mirror of the laser device are arranged as one integrated monolithic part. | 01-07-2010 |
20100000486 | IGNITION DEVICE FOR AN INTERNAL COMBUSTION ENGINE - An ignition device for an internal combustion engine, in particular of a motor vehicle, includes at least one pump light source, which provides a pump light. Furthermore, a laser device is provided, which is able to generate a laser light for beaming into a combustion chamber. A waveguide device transmits the pump light from the pump light source to the laser device. The laser device includes at least one refraction device, for example, a lens, which refracts the pump light and is in one piece therewith. | 01-07-2010 |
20100018487 | Method for Operating an Ignition Device for an Internal Combustion Engine - A method for operating an ignition device for an internal combustion engine, particularly of a motor vehicle, having a laser device which has a laser-active solid that has a passive Q-switch. The duration of a pumping light pulse that is applied to the laser device is selected as a function of a specifiable number of laser pulses that is to be generated using the laser device. | 01-28-2010 |
20100024755 | OPTICAL DISTRIBUTOR FOR A LASER-BASED IGNITION SYSTEM, AND METHOD FOR THE OPERATION THEREOF - An optical distributor for the distribution of light, in particular laser light, between at least one optical input and at least one of several optical outputs includes at least one movably disposed light guide and a positioning member for moving the at least one light guide, the movably disposed light guide being movable by the positioning member such that at least one of the optical inputs is connectable via the light guide to at least one of the optical outputs. | 02-04-2010 |
20100031909 | Spark Plug for an internal combustion engine and method for the operation thereof - A spark plug for an internal combustion engine having a light guide device for supplying the spark plug with optical radiant power. A sensor arrangement is at least partially integrated into the spark plug but disposed outside the light guide device, and is embodied for the acquisition of operating data of the spark plug and/or of a combustion chamber associated with the spark plug. | 02-11-2010 |
20100065000 | IGNITION DEVICE FOR AN INTERNAL COMBUSTION ENGINE - An ignition device for an internal combustion engine, particularly of a motor vehicle, having a laser device which has a laser-active solid and which generates a laser beam, preferably in the form of a laser pulse, for eradiation into a combustion chamber, focusing optics for focusing the laser beam being allocated to the laser device. The laser beam has a beam profile that deviates from being circular. A pumping light source is provided for applying pumping light to the laser device. The beam profile of the laser beam and/or of the pumping light is rectangular or linear and/or circular and/or dumbbell-shaped. | 03-18-2010 |
20100218739 | METHOD FOR OPERATING AN IGNITION DEVICE FOR AN INTERNAL COMBUSTION ENGINE - A method is for operating an ignition device for an internal combustion engine, particularly of a motor vehicle, having a laser device which has a laser-active solid having a passive Q-switch and which generates a laser pulse for eradiating into a combustion chamber, and having a pumping light source which provides a pumping light for the laser-active solid of the laser device. A point of ignition, at which the laser pulse is generated, is regulated to a specifiable setpoint value by setting a radiation intensity of the pumping light and/or a pumping duration and/or a pumping starting time and/or a wavelength of the pumping light. | 09-02-2010 |
20100252546 | METHOD FOR OPERATING AN IGNITION DEVICE - A method is described for operating an ignition device, in particular in an internal combustion engine, having a combustion chamber window for optically connecting the ignition device to a combustion chamber. An optical signal which may be detected in the region of the combustion chamber window is evaluated to deduce a state of the combustion chamber window. In particular, soiling of the combustion chamber window may be identified in this manner. | 10-07-2010 |
20100275868 | LASER MODULE - 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. | 11-04-2010 |
20100282195 | IGNITION DEVICE IN PARTICULAR FOR AN INTERNAL COMBUSTION ENGINE, AND METHOD FOR MANUFACTURING SAME - 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. | 11-11-2010 |
20100285619 | METHOD FOR MANUFACTURING A SOLID STATE LASER HAVING A PASSIVEQ-SWITCH, - A method for manufacturing a laser-active solid having a bonded passive Q-switch is provided, which is particularly suitable for large quantities. | 11-11-2010 |
20100296530 | METHOD FOR OPERATING AN IGNITION DEVICE, AND AN IGNITION DEVICE - In a method for operating an ignition device for an internal combustion engine, in particular of a motor vehicle, having a laser device which includes a laser-active solid having a passive Q-switching system as well as an optical amplifier connected downstream from the passive Q-switching system ( | 11-25-2010 |
20110235670 | METHOD FOR OPERATING A PUMP LIGHT SOURCE HAVING A DIODE LASER - A method is for operating a pump light source having a diode laser, which provides a pump light, in particular for optical pumping of a laser device. The pump light source is activated in a first mode of operation such that the diode laser assumes a predefinable target temperature, which lies in a range of a maximum of the coefficient of absorption of the laser-active solid of the laser device. In a second mode of operation, following the first mode of operation, the pump light source is activated such that it generates pump light to build up a population inversion in the laser-active solid of the laser device. In a third mode of operation, following the second mode of operation, the pump light source is activated such that it generates pump light to activate a laser operation in the laser device, the activation time in the third mode of operation being less than an activation time in the second mode of operation, and/or an activation current in the third mode of operation being greater than an activation current in the second mode of operation. | 09-29-2011 |
20110308489 | LASER SPARK PLUG AND PRECHAMBER MODULE FOR SAME - A laser spark plug, in particular for an internal combustion engine of a motor vehicle, is described. A connection arrangement is provided in an end region of the laser spark plug facing the combustion chamber. The connection arrangement allow the laser spark plug to be connected to a prechamber module. | 12-22-2011 |
20120024250 | IGNITION LASER - 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. | 02-02-2012 |
20120024251 | Gas engine having a laser ignition device - 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. | 02-02-2012 |
20120037108 | Laser Spark Plug - 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. | 02-16-2012 |
20120044966 | LIGHT SOURCE WITH A DIODE LASER AND A LARGE NUMBER OF OPTICAL FIBERS - A light source, e.g., for optical excitation of a laser device, includes a diode laser having a large number of emitters and a light-guiding device, the light-guiding device including a large number of optical fibers. Each fiber has a first end and a lateral surface, the first ends being arranged relative to the emitters in such a manner that light generated by the emitters is coupled into the first ends of the optical fibers, the optical fibers being arranged in abutting relationship along their lateral surfaces at least in the region of their first ends. The optical fibers are connected in the region of their first ends to a fiber support. | 02-23-2012 |
20120055431 | LASER SYSTEM AND IGNITION DEVICE FOR AN INTERNAL COMBUSTION ENGINE - A laser system for an ignition device of an internal combustion engine, in particular of a motor vehicle, having a first laser device and a second laser device situated downstream from the first laser device and optically connected to it, the first laser device being designed for generating pump light for optically pumping the second laser device. The first laser device has a reflecting means in an area which is optically connected to the second laser device, the reflecting arrangement being designed for reflecting radiation generated by the second laser device. | 03-08-2012 |
20120068369 | METHOD FOR PRODUCING A LIGHT SOURCE HAVING A DIODE LASER AND A PLURALITY OF OPTICAL FIBERS - A method is described for producing a light source, in particular a light source for optically exciting a laser device, for example a laser device of a laser ignition system of an internal combustion engine, including a diode laser having a plurality of emitters and a fiber optic device. The fiber optic device includes a plurality of optical fibers, each fiber having a first end and a lateral surface area. The first ends are situated relative to the emitters in such a way that light generated by the emitters is injected into the first ends of the optical fibers. The optical fibers are situated in abutment along their lateral surface areas, at least in the region of the first ends of the optical fibers. The method is characterized by the following steps: arranging a plurality of optical fibers which form a fiber section in a subregion, the fiber section being situated between two opposite pressing surfaces; heating the fiber section; and exerting a force on the heated optical fibers with the aid of the pressing surfaces. The force and the heating initially result in deformation of the heated optical fiber. The exerted force and/or a temperature of the optical fibers is/are selected in such a way that the deformation ceases when the optical fibers for the first time fill, at least largely, a region between the pressing surfaces. | 03-22-2012 |
20120106582 | HEAT SINK FOR A PULSED HIGH-POWER LASER DIODE - A semiconductor laser module having a substrate and having at least one semiconductor laser situated on the substrate, the substrate having a layer structure which includes at least one primary layer which establishes a thermal contact with the semiconductor laser. The semiconductor laser is designed in such a way that it emits heat pulses having a minimum specific heat of approximately 3 mJ per mm | 05-03-2012 |
20120132167 | LASER IGNITION DEVICE - 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. | 05-31-2012 |
20120279469 | LASER SPARK PLUG - 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. | 11-08-2012 |
20120304958 | IGNITION DEVICE - 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. | 12-06-2012 |
20120304959 | LASER SPARK PLUG - A laser spark plug having an antechamber is designed to irradiate laser radiation, which is guided and/or generated in the laser spark plug on at least two ignition points which are different from one another and are lying in the antechamber. The laser spark plug is designed to irradiate the laser radiation into the antechamber in such a way that a distance between at least one first ignition point and one second ignition point adjoining thereto is larger than a minimum distance between the first and/or the second ignition point(s) and an inner surface of the antechamber. | 12-06-2012 |
20130000597 | LASER IGNITION DEVICE AND OPERATING METHOD FOR A LASER IGNITION DEVICE - A laser ignition device, particularly for an internal combustion engine, having a precombustion chamber and a laser device, which is developed to irradiate, particularly to focus, laser radiation onto at least two ignition points, lying in the precombustion chamber, that are different from each other. The laser device is developed to irradiate the laser radiation optionally onto one or more ignition points. | 01-03-2013 |
20130014717 | LASER IGNITION DEVICE FOR AN INTERNAL COMBUSTION ENGINEAANM Moenster; MathiasAACI StuggartAACO DEAAGP Moenster; Mathias Stuggart DEAANM Herden; WernerAACI GerlingenAACO DEAAGP Herden; Werner Gerlingen DEAANM Vogel; ManfredAACI DitzingenAACO DEAAGP Vogel; Manfred Ditzingen DE - A laser ignition device for an internal combustion engine, in particular of a motor vehicle, having a laser device for generating laser pulses, and having a pumped light source for optically pumping the laser device. A photodiode system is situated in the area of an optical connection between the pumped light source and the laser device in such a way that pumped radiation generated by the pumped light source and the laser radiation generated by the laser device may each be irradiated at least partially onto a photodiode of the photodiode system. | 01-17-2013 |
20130199483 | LASER IGNITION PLUG WITH AN ANTECHAMBER - A laser ignition plug includes an antechamber into which the laser ignition plug is configured to irradiate laser radiation. The antechamber defines at least two overflow ducts that realize a fluid connection between the antechamber and a spatial region surrounding the antechamber. The at least two overflow ducts, with regard to one or more of (i) the radial spacing thereof from a longitudinal axis of the antechamber, (ii) the axial spacing thereof from an end region, which faces toward the combustion chamber, of the antechamber, and (iii) the alignment and/or geometry thereof, are arranged asymmetrically with respect to the longitudinal axis of the antechamber. | 08-08-2013 |