Patent · US Active

Method for controlling a pressure in a crankcase

US10544718B2 · kind B2 · utility

0Cited by

1References

20Claims

0Family size

Assignee

Mahle International GmbH · DE

Inventors

Volker Kirschner · Rochlitz, DE
Robert Lepper · Leonberg, DE
Thomas Riemay · Bad Marienberg, DE

Key dates

Filing date	Mar 15, 2017
Grant date	Jan 28, 2020
Priority date	—
Expiry date	Mar 15, 2037

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02D2250/08
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.