Robert Boschgmbh

Klaus Sassen

Friedrich Boecking

Tobias Lang

Thomas Sebastian

Klaus Zimmermann

Bernd Mossner

Jorn Beckmann

Jens Leideck

Bernd Haussmann

Dieter Hall

Roland Klatt

A piezoelectric actuator and an injector for an internal combustion engine are proposed, the electromagnetic compatibility of which is significantly improved in comparison with conventional injectors. The actuator head and/or actuator foot is manufactured out of a ceramic material, thus reducing the capacitance of the electric capacitor that is formed between the electrical ground and the piezoelectric actuator. An advantage of the piezoelectric actuator according to the invention is that no additional components are required. The change from metallic materials to ceramic materials also increases the rigidity of the piezoelectric actuator since ceramic materials have a significantly higher modulus of elasticity than metals.

Piezoelectric actuator and injector comprising a piezoelectric actuator for an internal combustion engine

A device and a method for controlling an internal combustion engine. At least one first partial injection and one second partial injection are provided per injection cycle. One of the two partial injections is shifted in response to certain operating conditions being active. A correction value for a variable characterizing the delivery period is determined as a function of the shift of the partial injection.

Method and device for controlling an internal combustion engine

System for controlling an internal combustion engine

A process and a device for controlling an internal combustion engine in which a control unit is temporarily connected to an external tester via an interface. At least one storage device of the control unit is configured as first and second storage elements. The first storage element is supplied with data corresponding to a signal transmitted from the tester. The second storage element is supplied with data from the control unit. Either the contents of the first storage element or the contents of the second storage element are selected, with the contents of the second storage element being selected when the contents of the first storage element have an unallowable value.

Process and device for controlling an internal combustion engine

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Marbach/N, Germany

Klaus Sassen