Patent · US Active

Internal combustion engine with partial deactivation and method for the operation of an internal combustion engine of said type

US9051874B2 · kind B2 · utility

2Cited by

7References

6Claims

0Family size

Assignee

Ford Global Technologies, LLC · US

Inventors

Moritz Klaus Springer · Hagen, DE
Helmut Hans Ruhland · Eschweiler, DE
Albert Breuer · Cologne, DE
Thomas Lorenz · Chesterfield, US
Jan Linsel · Cologne, DE

Key dates

Filing date	Apr 10, 2013
Grant date	Jun 9, 2015
Priority date	—
Expiry date	May 8, 2033

Classification

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

Abstract

A system is provided for an internal combustion engine comprising, at least two cylinders wherein the at least two cylinders form at least two groups, wherein each group comprises at least one cylinder, the at least one cylinder of at least one group being formed as a cylinder which can be activated in a load-dependent manner and which is deactivated if a predefined load is undershot. The at least two groups are characterized by different compression ratios, the at least one cylinder of a first group having a higher compression ratio and the at least one cylinder of a second group having a lower compression ratio and the at least one cylinder of the second group comprises an activatable and deactivatable cylinder. Use of the first cylinder group, and deactivation of the second cylinder group during partial loads increases engine efficiency and fuel economy.

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