Patent application number | Description | Published |
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 |
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 |
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 |
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 |
20140238329 | METHOD AND DEVICE FOR OPERATING A LASER SPARK PLUG - In a method for operating a laser spark plug, the laser spark plug is actuated using an actuating device, in order to generate at least one laser ignition pulse, at least one variable characterizing the laser ignition pulse is ascertained using measuring techniques, and, from the at least one variable characterizing the laser ignition pulse, an operating condition of the laser spark plug is inferred. | 08-28-2014 |
20140305394 | Laser spark plug and cleaning method for same - A laser spark plug, in particular for an internal combustion engine, having a combustion chamber window through which laser radiation may be emitted from an interior of the laser spark plug toward an exterior, the laser spark plug having a component which surrounds at least part of the beam path of the laser radiation in the area of the exterior. In particular, the laser spark plug, in the area of the component, has at least one channel which has at least two orifice sections and which allows fluid communication between the orifice sections, a first orifice section being situated in the area of an outer surface of the combustion chamber window, and a second orifice section being situated in a radially outer area of the laser spark plug, in particular of the component. | 10-16-2014 |