Patent · US Active

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

US11326487B2 · kind B2 · utility

0Cited by

0References

10Claims

0Family size

Assignee

MAN Energy Solutions SE · DE

Inventors

Christoph Rohbogner · Augsburg, DE
Jens Lange · Bleckede, DE
Ingo Wilke · Unterschleißheim, DE
Andreas Beck · Mertingen, DE

Key dates

Filing date	Apr 14, 2020
Grant date	May 10, 2022
Priority date	—
Expiry date	Apr 14, 2040

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/30
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

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.

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