Patent application number | Description | Published |
20090133386 | PROCEDURE AND CONTROL UNIT FOR HEATING UP A CATALYST ARRANGED IN THE EXHAUST GAS SYSTEM OF A SUPERCHARGED COMBUSTION ENGINE - Suggested is a procedure for heating up a catalyst in the exhaust gas system of a charged combustion engine by adding air to the exhaust gas system, whereby the added air is taken from a suction system of the combustion engine in the direction of the air current behind a compressor of an exhaust gas turbo charger that is arranged in the suction system. The procedure distinguishes itself thereby that the combustion engine is driven with a direct injection of fuel in its combustion chambers, whereby it is driven after a start-up with an apportionment of a fuel amount, which has to be injected before the beginning of a combustion, into at least two partial injections per ignition, and with a suboptimal ignition angle efficiency. A second independent claim concerns a control unit, which is customized for controlling the course of the procedure. | 05-28-2009 |
20090133391 | PROCEDURE AND CONTROL UNIT FOR AN ACCELERATED HEATING OF A CATALYST IN AN EXHAUST GAS SYSTEM OF A SUPERCHARGED COMBUSTION ENGINE WITH A VARIABLE VALVE CONTROL - Suggested is a procedure for heating a catalyst in the exhaust gas system of a supercharged combustion engine with direct fuel injection and variable gas exchange valve control by producing a reactive exhaust gas fuel/air mixture in the exhaust gas system, whereby an air percentage of the reactive fuel/air mixture is thereby produced that air is rinsed from a suction system of the combustion engine over its combustion chambers into the exhaust gas system. The invention distinguishes itself thereby that the combustion engine is operated in idle mode after a cold start with a greater valve overlap and/or a greater valve overlap profile than in a normal operation where the catalyst is already heated as well as with an apportionment of a fuel amount that has to be injected before a combustion into at least two partial injections per ignition and combustion chamber and with a suboptimal ignition angle efficiency. | 05-28-2009 |
20090210132 | Method for Operating an Internal Combustion Engine - 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. | 08-20-2009 |
20100024392 | METHOD FOR HEATING A CATALYTIC CONVERTER ARRANGED IN AN EXHAUST-GAS REGION OF A COMBUSTION PROCESS, AND DEVICE FOR CARRYING OUT THE METHOD - 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. The method is characterized in that a measure for a temperature of the catalytic converter, in particular a measure for the temperature at the inlet of the catalytic converter, is determined and in that a quantity of reducing exhaust-gas constituents is increased by means of at least one intervention into the control of the internal combustion engine if the measure for the temperature exceeds a predetermined temperature threshold value. The approach according to the invention permits rapid heating of the catalytic converter, wherein the hydrocarbon emissions when the catalytic converter is cold are at the same time as low as possible. | 02-04-2010 |
20100070152 | METHOD AND APPARATUS FOR DETECTING A CONTINUOUS INGRESS OF FUEL INTO THE LUBRICATING OIL OF AN INTERNAL COMBUSTION ENGINE DURING COLD STARTING - In a method and an apparatus for detecting a continuous ingress of fuel into the lubricating oil of an internal combustion engine, that is to say oil dilution, in particular of a motor vehicle during cold starting, there is provision, in particular, for the continuous ingress of fuel to be detected by means of a lambda control. The continuous ingress of fuel is preferably determined using the outgassing of fuel from a crankcase of the internal combustion engine, wherein the depletion is based on adaptation values of the lambda control. | 03-18-2010 |
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 |
20100263615 | IGNITION DEVICE FOR A LASER IGNITION SYSTEM OF AN INTERNAL COMBUSTION ENGINE - 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. | 10-21-2010 |
20100275867 | Laser device for the ignition device of an internal combustion engine - 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. | 11-04-2010 |
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 |
20110008006 | FIBER OPTIC CONNECTOR SYSTEM - 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. | 01-13-2011 |
20110023807 | LASER DEVICE AND METHOD FOR OPERATING SAME - 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. | 02-03-2011 |
20110041793 | LASER DEVICE AND OPERATING METHOD FOR THE LASER DEVICE - 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. | 02-24-2011 |
20110120404 | Laser spark plug - 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. | 05-26-2011 |
20110203542 | IGNITION DEVICE FOR A LASER IGNITION OF AN INTERNAL COMBUSTION ENGINE - 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. | 08-25-2011 |
20110259292 | LASER-INDUCED SPARK IGNITION FOR AN INTERNAL COMBUSTION ENGINE - 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. | 10-27-2011 |
20110297121 | SPARK PLUG WITH A LASER DEVICE IN A PRECHAMBER - 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. | 12-08-2011 |
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 |
20120118114 | SOCKET WRENCH FOR ASSEMBLING A LASER IGNITION SYSTEM - 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. | 05-17-2012 |
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 |
20130025549 | laser spark plug and method for operating same - The invention relates to a laser spark plug ( | 01-31-2013 |
20130098323 | LASER SPARK PLUG - 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. | 04-25-2013 |
20130098331 | METHOD FOR OPERATING A LASER SPARK PLUG FOR A COMBUSTION ENGINE - In a method for operating a laser spark plug for a combustion engine, the laser spark plug having a precombustion chamber, within an operating cycle of the combustion engine, the laser spark plug irradiates an ignition location situated inside the precombustion chamber with a plurality of laser ignition pulses temporally offset from one another. | 04-25-2013 |
20130104827 | Laser-induced spark ignition for an internal combustion engine | 05-02-2013 |
20130133602 | LASER-INDUCED SPARK IGNITION FOR AN INTERNAL COMBUSTION ENGINE - A laser spark plug for an internal combustion engine includes at least one element for guiding, shaping and/or generating laser radiation, a combustion chamber window and a housing. The housing has, on the opposite side of the combustion chamber window from the element, an aperture for the passage of the laser radiation guided, shaped and/or generated by the element into a prechamber disposed at the end of the housing on the combustion chamber side. At least one overflow channel is provided for a fluid connection between an internal space of the prechamber and a combustion chamber surrounding the prechamber. When a fluid flows into the internal space of the prechamber through the overflow channel, a fluid flow is obtained that enters the interior of the aperture at a minimum angle ε, in particular measured with respect to the longitudinal axis of the laser spark plug, of 45°. | 05-30-2013 |
20130139774 | LASER-INDUCED SPARK IGNITION FOR AN INTERNAL COMBUSTION ENGINE - A laser spark plug for an internal combustion engine has at least one laser unit for guiding, shaping, and/or for producing laser radiation, a combustion chamber window, and a housing which has, at the side of the combustion chamber window situated opposite the laser unit, a screen for the passage of the laser radiation guided, shaped, and/or produced by the laser unit into a combustion chamber, the screen having a first end facing the combustion chamber and a second end facing away from the combustion chamber, the inner contour of the screen having an extremal cross-section in a region that is situated at a distance both from the first and second ends. | 06-06-2013 |
20130152893 | LASER-INDUCED SPARK IGNITION FOR AN INTERNAL COMBUSTION ENGINE - Laser spark plug for an internal combustion engine has at least one laser unit for guiding, shaping and/or generating laser radiation, further including a combustion chamber window, and a housing which has, on the opposite side of the combustion chamber window from the laser unit, an aperture for the passage of the laser radiation guided, shaped and/or generated by the laser unit into a combustion chamber, the length of the aperture being 4 mm or more. | 06-20-2013 |
20130186361 | COOLING DEVICE FOR A LASER SPARK PLUG - A cooling device for a laser spark plug. The cooling has a radially inner first contact area which is developed to establish a thermal contact to a housing of the laser spark plug via at least one first radially inner contact surface. The cooling device also has a radially outer second contact area which is developed to establish a thermal contact to a heat sink, in particular to an inner wall of a spark plug hole receiving the laser spark plug, via at least one first radially outer contact surface. A connector is provided, which is developed to establish a thermal contact between the first contact area and the second contact area. The cooling device is developed at least in part elastically in order to allow for a relative movement in a generally radial direction between at least the first contact surface and the second contact surface. | 07-25-2013 |
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 |
20130340696 | LASER IGNITION DEVICE FOR AN INTERNAL COMBUSTION ENGINE - A laser ignition device for an internal combustion engine, encompassing an ignition laser having a combustion chamber window, such that until startup of the laser ignition device, the combustion chamber window is equipped with a protective layer. | 12-26-2013 |
20140130761 | LASER SPARK PLUG AND OPERATING METHOD FOR SAME - A laser spark plug, in particular for an internal combustion engine, includes a prechamber for accommodating an ignitable medium and means for applying laser radiation to an ignition point situated in the prechamber. The means are fashioned such that the laser radiation is focused onto at least one ignition point that, given a division of the prechamber into three partial regions that are approximately equal in volume and that extend axially away from an end face of the laser spark plug adjoining the prechamber and are separated from one another by imaginary planes situated essentially parallel to the end face, is situated in the partial region adjoining the end face or in a central partial region adjacent to said partial region, preferably in the partial region adjoining the end face. | 05-15-2014 |
20140216383 | LASER SPARK PLUG AND COOLER FOR A LASER SPARK PLUG - A laser spark plug configured to be installed into a plug shaft of an internal combustion engine, and to focus laser ignition energy into the combustion chamber via combustion chamber-side, and thus proximal end, of the laser spark plug has, at a distal end of the laser spark plug opposite to the proximal end, a connecting unit for detachable mechanical and thermal connection to a cooler, the connecting unit being designed to permit the connecting and the disconnecting of the cooler when the laser spark plug is installed in the plug shaft. | 08-07-2014 |
20150027394 | laser spark plug having an improved seal between the combustion chamber window and the casing - A casing for a laser spark plug, in particular, of an internal combustion engine of a motor vehicle, or of a stationary engine; the casing including at least one casing part and a combustion chamber window joined to the casing part to form a seal at least regionally; characterized in that at least one sealing element, whose coefficient of thermal expansion at an operating temperature of the laser spark plug is greater than the coefficient of thermal expansion of the casing part at the operating temperature of the laser spark plug, is provided between the casing part and the combustion chamber window. | 01-29-2015 |