Patent · US Active

Internal combustion engine which may be selectively operated by the two-stroke method or the four-stroke method and method for operating such an internal combustion engine

US9732682B2 · kind B2 · utility

2Cited by

5References

17Claims

0Family size

Assignee

Ford Global Technologies, LLC · US

Inventors

Torsten Tietze · Berlin, DE
Christian Winge Vigild · Aldenhoven, DE
Andreas Kuske · Geulle, NL
Wilbert Hemink · Limburg, DE

Key dates

Filing date	Jul 2, 2013
Grant date	Aug 15, 2017
Priority date	—
Expiry date	Jun 15, 2036

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/40
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

Systems and methods are provided for operating an internal combustion engine in a two-stroke mode or a four-stroke mode to achieve greater fuel efficiency and minimize emissions. The system comprises a mode-adaptable valve; a valve rocker arm to actuate opening and closing of the mode adaptable valve; a cam follower of a first cam for carrying out a two-stroke mode; a cam follower of a second cam for carrying out a four-stroke mode; and a pin to mechanically couple the valve rocker arm to the cam follower of the first cam or the cam follower of the second cam. Coupling the valve rocker arm to the cam follower of the first cam enables a two-stroke mode and coupling the valve rocker arm to the cam follower of the second cam enables a four-stroke mode.

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