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1. (WO2018202976) METHOD FOR ADJUSTING THE RICHNESS SET VALUE OF A SENSOR DURING AIR SCAVENGING
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Pub. No.: WO/2018/202976 International Application No.: PCT/FR2018/051017
Publication Date: 08.11.2018 International Filing Date: 24.04.2018
IPC:
F02D 41/14 (2006.01) ,F02B 77/08 (2006.01) ,F02B 25/00 (2006.01) ,F02D 41/14 (2006.01)
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
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02
COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
B
INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
77
Component parts, details, or accessories, not otherwise provided for
08
Safety, indicating, or supervising devices
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02
COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
B
INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
25
Engines characterised by using fresh charge for scavenging cylinders
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
Applicants:
PSA AUTOMOBILES SA [FR/FR]; 2-10 Boulevard de l'Europe 78300 Poissy, FR
Inventors:
TRAVAILLARD, Cyril; FR
DAMBRICOURT, Frederic; FR
GARNIER, Gregoire; FR
Agent:
BOURGUIGNON, Eric; FR
Priority Data:
175390503.05.2017FR
Title (EN) METHOD FOR ADJUSTING THE RICHNESS SET VALUE OF A SENSOR DURING AIR SCAVENGING
(FR) PROCEDE DE REGLAGE DE LA CONSIGNE DE RICHESSE D'UNE SONDE LORS D'UN BALAYAGE D'AIR
Abstract:
(EN) The invention relates to a method for adjusting the richness set value (Sensor rich set value) during air scavenging of a so-called upstream sensor disposed in an exhaust line of a heat engine, the air scavenging being performed on fresh air in the engine and allowing unburnt air to enter the line, an adjustment of the richness of the air/fuel mixture in the engine being carried out according to an estimated richness set value (Sensor rich set value) at the upstream sensor based on a pre-determined richness set value for the engine and a richness measured by the upstream sensor. The richness set value (Sensor rich set value) at the upstream sensor estimated at a given moment is updated by a corrective term (Term) at least a function of an engine speed (RM) and the scavenged air level (Tb) at said given moment in order to supply an updated richness set value (Reac rich set value) at the upstream sensor.
(FR) L'invention porte sur un procédé de réglage de la consigne de richesse (Consrich sond) lors d'un balayage d'air d'une sonde dite amont disposée dans une ligne d'échappement en sortie d'un moteur thermique et le balayage d'air s'effectuant dans le moteur sur de l'air frais et laissant passer de l'air non brûlé dans la ligne, une régulation de richesse du mélange air/carburant dans le moteur étant effectuée selon une consigne de richesse estimée (Consrich sond) à la sonde amont à partir d'une consigne de richesse prédéterminée au moteur et une richesse mesurée par la sonde amont. La consigne de richesse (Consrich sond) à la sonde amont estimée à un instant donné est réactualisée par un terme correctif (Term) au moins fonction d'un régime moteur (RM) et d'un taux d'air balayé (Tb) en vigueur à cet instant donné pour donner une consigne de richesse réactualisée (Consrich réac) à la sonde amont.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: French (FR)
Filing Language: French (FR)