Patent · US Active

Four-cylinder in-line engine with partial shutdown and method for operating such a four-cylinder in-line engine

US9394835B2 · kind B2 · utility

0Cited by

1References

8Claims

0Family size

Assignee

Ford Global Technologies, LLC · US

Inventors

Carsten Weber · Aalen, DE
Martin Wirth · Hitzendorf, AT
Rainer Friedfeldt · Gerstungen, DE
Guenter Bartsch · Gummersbach, DE

Key dates

Filing date	Aug 15, 2013
Grant date	Jul 19, 2016
Priority date	—
Expiry date	Apr 25, 2034

Classification

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

Abstract

An engine method, comprising turning off a second cylinder group in response to engine load falling below a first threshold, the second cylinder group including a first outer most cylinder and its immediately adjacent cylinder and turning on the second cylinder group in response to engine load raising above a second threshold and operating a first cylinder group constantly throughout engine operation; the first cylinder group including a second outer most cylinder and its immediately adjacent cylinder. By this method, engine efficiency may increase during partial load operating conditions from low engine loads.

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