Robert Boschgmbh

Manfred Vogel

Werner Herden

Walter Benedikt

Heiko Ridderbusch

Wolfgang Schmidt

Josef Tosch

Pascal Woerner

Martin Weinrotter

Bernd Schmidtke

Frank Stanglmeier

Bernd Mueller

Klaus Ries-Mueller

Ulrich Drews

Kurt Weiblen

Ulrich Eisele

Johann Konrad

Juergen Raimann

Matthias Kuesell

Dittmar Klett

Rainer Ecker

Richard Spitz

Jiri Marek

Axel Heinstein

Albert Gerhard

Dietrich Trachte

Dieter Betz

Rudolf Pollner

Roland Mueller

Herbert Goebel

Anton Mindl

Gernot Wuerfel

Karl-Heinz Nuebel

Stefan Lauter

Volkmar Denner

Bernd Fischer

Hartwig Senftleben

Andreas Niegel

Christian Bonnefoit

Axel Storch

Robert Koehler

Klaus-Peter Gansert

Roman Grzeszik

Klaus Bundschuh

Heidrun Lange

Matthias Kussel

Matthias Kusell

Matthias Kuessel

Hans-Dieter Herde

Richard Adamczuk

Bernd Ozygus

Detlev Nowak

Paulo Ricardo

An ignition device for a combustion chamber of an internal combustion engine includes a first electrode and a second electrode, which is movable with the aid of an actuator. The ignition device is configured to generate a first ignition spark when a contact between the first and second electrode is interrupted. To accomplish this, the second electrode is moved away from the first electrode. A third electrode is also provided, which is spaced apart from the first electrode. With the aid of the third electrode, a second ignition spark can be generated by moving the second electrode away from the other two electrodes. With the three electrodes, the ignition unit is configured to allow the two ignition sparks to pass through a volume formed between the electrodes in the direction transverse to the longitudinal extension of the ignition sparks in the course of the movement of the second electrode.

Ignition unit for an internal combustion engine

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.

Method for operating a pump light source having a diode laser

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.

Laser-induced spark ignition for an internal combustion engine

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.

Laser device and operating method for the laser device

An ignition device, 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 such that radiation incident in the region of the laser device and/or in the region of a combustion chamber associated with the laser device is injected into the optical fiber device. The optical fiber device advantageously allow the radiation which is injected into the optical fiber device to be analyzed, using a detector which is remotely situated, without having to provide additional, separate optical fiber devices for the radiation to be analyzed, because is conducted directly via the same optical fiber that is already used for supplying pumped light.

Ignition device in particular for an internal combustion engine, and method for manufacturing same

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 (), the laser device generates a laser pulse for radiating into a combustion chamber, and the ignition device having a pump light source which provides a pump light for the laser-active solid and the optical amplifier () of the laser device. The energy of the laser pulse is controlled by varying a wavelength of the pump light.

Method for operating an ignition device, and an ignition device

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.

Fuel injection system

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.

Spark plug for an internal combustion engine 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.

Optical distributor for a laser-based ignition system, and method for the operation thereof

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.

Method for operating an ignition device for an internal combustion engine

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.

Internal combustion engine and method for operating an internal combustion engine by means of a laser ignition unit

An ignition system for an internal combustion engine, having a combustion chamber and a fuel injection device which injects a fuel directly into the combustion chamber in stream-guided fashion, is configured so that the ignition system has a positive polarity.

Ignition system for an internal combustion engine

A fuel injector having an integrated spark plug is provided, the fuel injector providing direct injection of fuel into a combustion chamber of an internal combustion engine, and the spark plug for igniting the fuel injected into the combustion chamber. Also provided is a spark-plug insulator that insulates a first electrode and a second electrode which is set apart from the first electrode by a spark gap, the fuel injector and the spark-plug insulator of the spark plug being arranged in a shared housing. The spark gap has a width of 50 to 300 &#x3bc;m and is disposed in front of the fuel injector at a distance of 3 to 10 mm.

Combined fuel injection valve-ignition plug

The present invention provides an ignition method for an internal combustion engine, an injection being alternatively performed in at least one first operating mode or in a second operating mode, and the ignition coil being charged as a function of the current operating mode. A control-pulse curve characteristic of the current operating mode is provided, and the charging of the ignition coil is performed by a control logic element in response to the control-pulse curve, using corresponding, different time characteristics of the primary current. The present invention also provides a corresponding ignition device for an internal combustion engine.

Method of ignition and corresponding ignition unit

The invention relates to a method for operating a direct-injecting gasoline internal combustion engine ( ), especially of a motor vehicle, wherein the gasoline is injected directly into the combustion chamber ( ) of the engine ( ) and an ignition spark is ignited in the combustion chamber ( ). In order to be able to reliably ignite an air/gasoline mixture with a relatively low ignition voltage notwithstanding a relatively large electrode gap of a spark plug ( ) of the engine ( ), it is suggested that the ignition spark be ignited in advance of the start of injection ( ) and that a spark burn duration ( ) be maintained up to past the end of the injection ( ).

Method of operating a direct fuel injected internal combustion engine

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Ditzingen, Germany

Manfred Vogel