EP 3730771 A1 20201028 - ENGINE CONTROL METHOD, COMPUTER PROGRAM PRODUCT, ENGINE CONTROL DEVICE, AND ENGINE SYSTEM
Title (en)
ENGINE CONTROL METHOD, COMPUTER PROGRAM PRODUCT, ENGINE CONTROL DEVICE, AND ENGINE SYSTEM
Title (de)
MOTORSTEUERUNGSVERFAHREN, COMPUTERPROGRAMMPRODUKT, MOTORSTEUERUNGSVORRICHTUNG UND MOTORSYSTEM
Title (fr)
PROCÉDÉ DE COMMANDE DE MOTEUR, PRODUIT PROGRAMME INFORMATIQUE, DISPOSITIF DE COMMANDE DE MOTEUR ET SYSTÈME DE MOTEUR
Publication
Application
Priority
JP 2019081015 A 20190422
Abstract (en)
When an engine is operated in a first range, a stoichiometric/rich all-cylinder operation execution step is executed where an air-fuel ratio in each cylinder is set to a stoichiometric air-fuel ratio or less, and air-fuel mixture is combusted in all of the cylinders, when a determination is made that the engine is operated in a second range, a lean reduced-cylinder operation execution step is executed where the air-fuel ratio in each cylinder is set higher than the stoichiometric air-fuel ratio, and air-fuel mixture is combusted only in part of the cylinders and, during a predetermined period after a determination is made that an operation point of the engine is shifted from the first range to the second range, a switching step is executed where an amount of air to be introduced into each cylinder is increased such that the air-fuel ratio in each cylinder becomes higher than the stoichiometric air-fuel ratio, and air-fuel mixture is combusted in all of the cylinders.
IPC 8 full level
F02D 41/00 (2006.01); F02D 41/10 (2006.01); F02D 41/14 (2006.01); F02D 41/30 (2006.01)
CPC (source: EP)
F02D 41/0087 (2013.01); F02D 41/10 (2013.01); F02D 41/3029 (2013.01); F02D 41/3041 (2013.01); F02D 41/3064 (2013.01); F02D 2041/0012 (2013.01); F02D 2200/1002 (2013.01); F02D 2200/602 (2013.01); F02D 2250/21 (2013.01)
Citation (applicant)
JP 2006183556 A 20060713 - TOYOTA MOTOR CORP
Citation (search report)
- [XI] EP 1707791 A2 20061004 - MAZDA MOTOR [JP]
- [Y] US 2006196469 A1 20060907 - KUO TANG-WEI [US], et al
- [Y] US 2003221655 A1 20031204 - SURNILLA GOPICHANDRA [US], et al
- [I] WO 2007140132 A2 20071206 - GM GLOBAL TECH OPERATIONS INC [US]
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
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DOCDB simple family (application)
EP 20162076 A 20200310; JP 2019081015 A 20190422