Global Patent Index - EP 2633172 A1

EP 2633172 A1 2013-09-04 - METHOD AND DEVICE FOR CONTROLLING A VALVE OF AN INTERNAL COMBUSTION ENGINE

Title (en)

METHOD AND DEVICE FOR CONTROLLING A VALVE OF AN INTERNAL COMBUSTION ENGINE

Title (de)

VERFAHREN UND VORRICHTUNG ZUM STEUERN EINES VENTILS EINER BRENNKRAFTMASCHINE

Title (fr)

PROCÉDÉ ET DISPOSITIF DE COMMANDE D'UNE SOUPAPE D'UN MOTEUR À COMBUSTION INTERNE

Publication

EP 2633172 A1 (DE)

Application

EP 11754302 A

Priority

  • DE 102010050232 A
  • EP 2011004447 W

Abstract (en)

[origin: WO2012055457A1] The invention relates to a method and device for controlling a valve of an internal combustion engine. The valve is controlled using a desired lift curve (121), which describes a course of a desired lift value of the valve (132) over a time interval or an angle of a crankshaft of the internal combustion engine. The desired lift curve (121) is automatically determined by dividing the time interval into a plurality of segments and defining respective boundary conditions for each of the plurality of segments. For each of the plurality of segments, a respective function that can be continuously differentiated once or several times is defined for the course of the desired lift value. The respective continuously differentiable function fulfills the respective boundary conditions of the respective segment. The desired lift curve (121) is formed by stringing together the continuously differentiable functions of the plurality of segments.

IPC 8 full level (invention and additional information)

F02D 41/20 (2006.01)

CPC (invention and additional information)

F02D 41/20 (2013.01); F01L 13/0015 (2013.01); F01L 2009/0478 (2013.01); F01L 2820/02 (2013.01); F02D 2041/001 (2013.01); F02D 2041/2037 (2013.01)

Citation (search report)

See references of WO 2012055457A1

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

EPO simple patent family

DE 102010050232 A1 20120503; EP 2633172 A1 20130904; WO 2012055457 A1 20120503

INPADOC legal status


2014-02-05 [DAX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT (TO ANY COUNTRY) DELETED

2013-09-04 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20130531

2013-09-04 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR