EP 3596326 B1 20220817 - METHOD FOR ADJUSTING RICHNESS IN A CONTROLLED-IGNITION INTERNAL COMBUSTION ENGINE
Title (en)
METHOD FOR ADJUSTING RICHNESS IN A CONTROLLED-IGNITION INTERNAL COMBUSTION ENGINE
Title (de)
VERFAHREN ZUR EINSTELLUNG DER FETTHEIT IN EINEM VERBRENNUNGSMOTOR MIT KONTROLLIERTER ZÜNDUNG
Title (fr)
PROCÉDÉ DE RÉGLAGE DE LA RICHESSE DANS UN MOTEUR À COMBUSTION INTERNE À ALLUMAGE COMMANDÉ
Publication
Application
Priority
- FR 1770257 A 20170316
- FR 2018050558 W 20180309
Abstract (en)
[origin: WO2018167406A1] The invention proposes a method for adjusting richness (r) in a controlled-ignition internal combustion engine, capable of limiting the temperature of the parts constituting the exhaust circuit during operation at high load. During operation at close to full load, the richness is adjusted to a first richness value (r1) in order to pre-cool the exhaust gases. When the temperature of the exhaust gases (θech) reaches a first temperature threshold (θ1), which is lower than a second temperature threshold (θ2) corresponding to a reliability limit of the parts, the richness value is gradually increased, for example linearly, from the first richness value (r1) to, at a maximum, a second richness value (r2), at which the temperature of the exhaust gases is equal to the second temperature threshold (θ2). If the temperature of the exhaust gases (θech) reaches said second threshold (θ2) before the richness has reached the second richness value (r2), the richness is immediately adjusted to said second richness value (r2).
IPC 8 full level
F02D 41/14 (2006.01)
CPC (source: EP KR RU)
F02D 41/14 (2013.01 - RU); F02D 41/1446 (2013.01 - EP KR); F02D 41/1475 (2013.01 - EP KR); F02D 2041/0265 (2013.01 - EP KR); F02D 2200/0802 (2013.01 - EP KR); F02D 2200/1002 (2013.01 - EP KR)
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)
WO 2018167406 A1 20180920; EP 3596326 A1 20200122; EP 3596326 B1 20220817; FR 3064030 A1 20180921; FR 3064030 B1 20190607; JP 2020510160 A 20200402; JP 2023182629 A 20231226; KR 20190126362 A 20191111; RU 2019132476 A 20210416; RU 2019132476 A3 20210701; RU 2752657 C2 20210729
DOCDB simple family (application)
FR 2018050558 W 20180309; EP 18713325 A 20180309; FR 1770257 A 20170316; JP 2019550691 A 20180309; JP 2023153685 A 20230920; KR 20197029096 A 20180309; RU 2019132476 A 20180309