Patent · US Active

Method and device for operating a multi-cylinder internal combustion engine

US10539082B2 · kind B2 · utility

0Cited by

2References

17Claims

0Family size

Assignee

Schaeffler Technologies AG & Co. KG · DE

Inventors

Hartmut Faust · Bogen, DE
Thomas Winkler · Mainz, DE

Key dates

Filing date	Oct 29, 2015
Grant date	Jan 21, 2020
Priority date	—
Expiry date	Oct 29, 2035

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/12
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A method for operating a multi-cylinder internal combustion engine in which every active cylinder operates in a four-stroke mode and every deactivated cylinder filled with an approximately completed gas filling is compressed and expanded during the four-stroke operation of the activated cylinder. In a method in which excitations of a crankshaft speed are minimized, a limited number of even-numbered cylinders of a multi-cylinder internal combustion engine (2) having a maximum even number of cylinders (20, 21, 22, 23, 24, 25) are deactivated sequentially, the limited even number of cylinders being smaller than the maximum even number of cylinders (20, 21, 22, 23, 24, 25) of the multi-cylinder internal combustion engine (2).

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