Robert Bosch

Andrea Krusch

Andreas Gutscher

Andreas Posselt

Haris Hamedovic

Marko Lorenz

Siamend Flo

Thorsten Allgeier

Walter Maeurer

The invention relates to a method for operating a piston pump () which is driven by means of a coil () of an electromagnet. A piston () of the piston pump () can be moved in a cylinder () for pumping purposes by means of the electromagnet. A voltage (U) is applied to the coil () during a switch-on period such that a current flows through the coil () and the piston () is accelerated, said voltage being applied by means of an actuation device (). A time curve of an electric state variable (I, U) of the coil () is qualitatively detected, and the curve or a curve derived therefrom is analyzed in order to detect an impact of the piston () against a stop. The invention further relates to an actuation device and a piston pump.

Operating method and actuation device for a piston pump

A method for adapting a transition compensation based on a lambda value change for operating an engine, which includes a combustion chamber having a first inlet opening connected to a first intake pipe having a first injector. The chamber includes a second inlet opening connected to a second intake pipe having a second injector. During normal operation, a predetermined fuel quantity is injected, and this quantity includes a first and second fuel quantities to be injected respectively via the first and second openings. In a first step, the first injector remains closed, and in a second step, the first injector is opened again. In the second step, a first test fuel quantity is injected into the combustion chamber via the first opening and a second test fuel quantity is injected via the second opening, the first and second test fuel quantities making up the predetermined fuel quantity.

Method for adapting transition compensation

In a method for identifying a fuel type or a fuel mixture for a combustion chamber of an internal combustion engine having (i) a first intake opening connected to a first intake manifold inside which a first fuel injector is located, and (ii) a second intake opening connected to a second intake manifold inside which a second fuel injector is located, in a first method step, the first fuel injector remains closed, and in a second method step the first fuel injector is opened again and a first test fuel quantity is injected into the combustion chamber in the second method step via the first intake opening, and a second test fuel quantity is injected via the second intake opening, the first test fuel quantity and the second test fuel quantity being made up to form a predefined fuel quantity.

Method for identifying fuel mixtures

Growing community of inventors

Ludwigsburg, Germany

Andrea Krusch