Title (en)

METHOD FOR ESTIMATING OIL DILUTION IN AN INTERNAL COMBUSTION ENGINE

Title (de)

VERFAHREN ZUR SCHÄTZUNG DER ÖLVERDÜNNUNG IN EINEM VERBRENNUNGSMOTOR

Title (fr)

PROCÉDÉ D'ESTIMATION DE LA DILUTION DU CARBURANT DANS L'HUILE D'UN MOTEUR À COMBUSTION INTERNE

Publication

EP 3743603 B1 20220302 (FR)

Application

EP 19700601 A 20190117

Priority

• FR 1850608 A 20180125
• EP 2019051096 W 20190117

Abstract (en)

[origin: WO2019145210A1] The invention relates to a method for estimating the rate of dilution of fuel in the oil of an internal combustion engine equipped with a combustion gas treatment device requiring regeneration phases by post-injection of fuel, during a step prior to the method, a plurality of fractions (F1, F2,... Fx) of the composition of said fuel is defined, each fraction (Fi) having a different density, and in that the method comprises, in a repeated manner for a series of instants (t, t+dt), an estimation of the rate of dilution (T) by adding the rate of dilution (T(t)) estimated at the preceding instant to a variation value of the rate of dilution (dT) calculated on the basis of an estimation of the variation of the rate of dilution (dTi), between two successive instants (t, t+dt), of each fraction (Fi) of the plurality of fractions (F1, F2,... Fx) of the composition of said fuel in the oil.

IPC 8 full level

F01M 11/10 (2006.01); F02D 41/02 (2006.01); F02D 41/04 (2006.01)

CPC (source: EP)

F01M 11/10 (2013.01); F02D 41/22 (2013.01); F02D 2200/0611 (2013.01); F02D 2250/11 (2013.01)

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

DOCDB simple family (publication)

FR 3077096 A1 20190726; FR 3077096 B1 20191213; CN 111601955 A 20200828; CN 111601955 B 20220621; EP 3743603 A1 20201202; EP 3743603 B1 20220302; WO 2019145210 A1 20190801

DOCDB simple family (application)

FR 1850608 A 20180125; CN 201980007431 A 20190117; EP 19700601 A 20190117; EP 2019051096 W 20190117