Man Energy Solutions Se

Man Diesel & Turbo Se

Ingo Wilke

Jens Lange

Christoph Rohbogner

Andreas Beck

Björn Dirumdam

Sascha Stoll

A method for operating an internal combustion engine that is supplied with lubricating oil via an oil circuit. A measurement value of the total base number and/or a measurement value of the oxidation of lubricating oil currently used in the oil circuit for the lubrication is detected. Dependent on the established measurement value of the total base number and/or dependent on the established measurement value of the oxidation an exchange oil quantity for the oil circuit is determined. Currently used lubricating oil to an extent corresponding to the exchange oil quantity is removed from the oil circuit and new lubricating oil to an extent corresponding to the exchange oil quantity is supplied to the oil circuit.

Method and control unit for operating a spark-ignition internal combustion engine or a dual-fuel internal combustion engine operated in the spark-ignition mode

A method for operating an internal combustion engine wherein the internal combustion engine to be operated is supplied with lubricating oil via an oil circuit. A measurement value of a total base number and/or a measurement value of the viscosity of the lubricating oil currently used in the oil circuit for the lubrication is detected. Dependent on the established measurement value of the total base number and/or dependent on the established measurement value of the viscosity an exchange oil quantity for the oil circuit is determined. Currently used lubricating oil to an extent corresponding to the exchange oil quantity is removed from the oil circuit. New lubricating oil to an extent corresponding to the exchange oil quantity is supplied to the oil circuit.

Method and control unit for operating a diesel internal combustion engine or a dual-fuel internal combustion engine operated in the diesel mode

A method of monitoring check valves () arranged in gas feed lines () of a gas engine includes determining a temperature (S) according to which a signal transmitter is activated (S) when a detected temperature in a gas feed line () lies outside of a first designated target range; and transmitting (S) a signal which carries information indicating the gas feed line () in which the temperature lying outside of the first target range was detected and/or the cylinder () with which the gas feed line () is associated.

Method of monitoring check valves arranged in gas feed lines of a gas engine

Spark plug for an internal combustion engine, having a center electrode and a ground electrode arranged in radial direction around the center electrode, wherein an annular spark gap is formed between the center electrode and the ground electrode for igniting a fuel mixture by means of an electric ignition spark developing between the center electrode and the ground electrode, and wherein the ground electrode is contoured in such a way that particles reaching the region of the ground electrode can be removed from the spark gap under the influence of gravitational force.

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Tutzing, Germany

Ingo Wilke