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 |
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 |
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 |
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 |
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 |
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 |
20120060791 | LASER SPARK PLUG AND PRECHAMBER MODULE FOR SAME - A laser spark plug, in particular for an internal combustion engine of a motor vehicle, having a prechamber and a laser device for emitting laser pulses into the prechamber. The laser device and/or the prechamber is/are designed to focus the laser pulses on a focus point located in the region of an inner surface of the prechamber. | 03-15-2012 |
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 |
20130298863 | IGNITION SYSTEM AND OPERATING METHOD FOR SAME - An ignition system is described, in particular for an internal combustion engine of a motor vehicle, having a laser spark plug, a pump module for supplying the laser spark plug with pump radiation, and an optical fiber device for transmitting the pump radiation from the pump module to the laser spark plug. At least two separate signal transmission devices which each extend at least partially along the optical fiber device, and an evaluation unit, which is designed to act on each of the signal transmission devices with a test signal, to evaluate a response signal of the signal transmission devices which results from the particular test signal, and from the response signal to deduce an operating state of the corresponding signal transmission device, are provided. | 11-14-2013 |
20130298864 | COVERING DEVICE FOR A SPARK PLUG SHAFT AND OPTICAL FIBER DEVICE FOR A LASER SPARK PLUG - A covering device for a spark plug shaft of an internal combustion engine has a fastening element provided for mechanically fastening the covering device to a target system, the fastening element being configured to electrically conductively connect at least one electric conductor to the covering device ( | 11-14-2013 |