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1. WO2020006047 - PRE-TURBINE WIDE-RANGE OXYGEN SENSOR LAMBDA CONTROL DURING SCAVENGING

Publication Number WO/2020/006047
Publication Date 02.01.2020
International Application No. PCT/US2019/039191
International Filing Date 26.06.2019
IPC
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02
COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
D
CONTROLLING COMBUSTION ENGINES
41
Electrical control of supply of combustible mixture or its constituents
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02
COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
D
CONTROLLING COMBUSTION ENGINES
13
Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
02
during engine operation
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02
COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
D
CONTROLLING COMBUSTION ENGINES
41
Electrical control of supply of combustible mixture or its constituents
02
Circuit arrangements for generating control signals
14
Introducing closed-loop corrections
F02D 41/00 (2006.01)
F02D 13/02 (2006.01)
F02D 41/14 (2006.01)
CPC
F02D 13/0261
F02D 2041/001
F02D 2041/1432
F02D 41/0007
F02D 41/0085
F02D 41/0087
Applicants
  • FCA US LLC [US/US]; 1000 Chrysler Drive Auburn Hills, Michigan 48326, US
Inventors
  • WHITE, Andrew; US
  • ATTARD, William; US
  • BADAWY, Tamer; US
  • ZHONG, Lurun; US
Agents
  • JURECKO, Thomas; US
  • SCHALDENBRAND, Michael; US
  • HOLLIS, Brian; US
  • BENEDICT, Jason; US
  • BALDRIDGE, Lukas; US
Priority Data
16/022,94329.06.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) PRE-TURBINE WIDE-RANGE OXYGEN SENSOR LAMBDA CONTROL DURING SCAVENGING
(FR) COMMANDE LAMBDA DE CAPTEUR D’OXYGÈNE À LARGE PLAGE PRÉ-TURBINE PENDANT UN BALAYAGE
Abstract
(EN)
A system and method of utilizing a pre-turbine wide-range oxygen (WR02) sensor during both individual cylinder fuel control (ICFC) and scavenging of a turbocharged engine involve receiving, by a controller and from the WR02 sensor arranged in an exhaust system of the engine at a point upstream of a turbine of a turbocharger of the engine, an unfiltered WR02 signal indicative of a fuel/air (FA) ratio of exhaust gas produced by the engine, performing, by the controller, ICFC by controlling the engine using the unfiltered WR02 signal (312), performing, by the controller, engine cycle average filtering of the WR02 signal to obtain a filtered WR02 signal (324), and, while the engine is scavenging (316 "Y"), performing, by the controller, engine FA ratio and emissions control using the filtered WR02 signal (328).
(FR)
La présente invention concerne un système et un procédé d’utilisation d’un capteur d’oxygène à large plage pré-turbine (WR02) à la fois pendant une commande de carburant de cylindre individuel (ICFC) et un balayage d’un moteur turbocompressé qui mettent en œuvre la réception, par un dispositif de commande et depuis le capteur WR02 agencé dans un système d’échappement du moteur à un point en amont d’une turbine d’un turbocompresseur du moteur, d’un signal WR02 non filtré indicatif d’un rapport carburant/air (FA) du gaz d’échappement produit par le moteur, la conduite, par le dispositif de commande, d’une ICFC par commande du moteur au moyen du signal WR02 non filtré (312), la conduite, par le dispositif de commande, d’un filtrage moyen sur le cycle de moteur du signal WR02 pour obtenir un signal WR02 filtré (324), et, pendant que le moteur est en balayage (316 "Y"), la conduite, par le dispositif de commande, d’une commande de rapport FA et d’émissions du moteur au moyen du signal WR02 filtré (328).
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