METHOD FOR CONTROLLING A PRESSURE IN A CRANKCASE

• Main Authors: LEPPER, Robert, RIEMAY, Thomas, KIRSCHNER, Volker
• Format: Patent
• Language: English; French; German
• Published: 06.05.2020
• Subjects: BLASTING; CRANKCASE VENTILATING; ENGINE PLANTS IN GENERAL; HEATING; LIGHTING; LUBRICATING INTERNAL COMBUSTION ENGINES; LUBRICATING OF MACHINES OR ENGINES IN GENERAL; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; STEAM ENGINES; WEAPONS

A method for controlling a pressure in a crankcase of an internal combustion engine with a crankcase venting device. The crankcase venting device may include a suction line via which a blow-by gas is removable from the crankcase, a pumping device, and an oil mist separating device. The pumping device and the oil mist separating device may be arranged in the suction line. The method may include controlling a rotational speed of an electric drive in at least one of a closed-loop manner and an open-loop manner, the electric drive configured to drive the pumping device. The method may also include adjusting the pressure in the crankcase via manipulating the rotational speed of the electric drive. The method may further include inferring the pressure in the crankcase via evaluating at least one performance parameter of the electric drive.