Some content of this application is unavailable at the moment.
If this situation persist, please contact us atFeedback&Contact
1. (WO2018202975) METHOD FOR FILTERING AND CORRECTING OSCILLATIONS IN A RICHNESS SIGNAL FROM AN ENGINE EXHAUST SENSOR
Latest bibliographic data on file with the International Bureau    Submit observation

Pub. No.: WO/2018/202975 International Application No.: PCT/FR2018/051016
Publication Date: 08.11.2018 International Filing Date: 24.04.2018
IPC:
F02D 41/14 (2006.01) ,F02D 41/24 (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
D
CONTROLLING COMBUSTION ENGINES
41
Electrical control of supply of combustible mixture or its constituents
24
characterised by the use of digital means
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:
175390603.05.2017FR
Title (EN) METHOD FOR FILTERING AND CORRECTING OSCILLATIONS IN A RICHNESS SIGNAL FROM AN ENGINE EXHAUST SENSOR
(FR) PROCEDE DE FILTRAGE D'UN SIGNAL DE RICHESSE ISSU D'UNE SONDE À L'ÉCHAPPEMENT D'UN MOTEUR
Abstract:
(EN) The invention relates to a method for filtering and correcting the richness signal (Upstream sensor meas) measured by a sensor under at least one engine operating condition creating oscillations in the measured richness (Upstream sensor meas) and a modification to a sensor model, said sensor being referred to as the upstream sensor. The operating condition is identified during earlier tests on the engine relative to the adjustment of the pre-determined richness set value (Sensor rich set value) for the engine, with a value of an engine operating parameter indicating that the condition is in effect being saved. As soon as said at least one value is detected at a given moment in the operation of the engine, a first nominal filtering is suspended and replaced by a second filtering of the measured richness (Upstream sensor meas). A correction is then made to at least one parameter (ttrans, treps) of the sensor.
(FR) L'invention porte sur un procédé de filtrage et de correction du signal de richesse (Mes sond sam) mesurée par une sonde lors d'au moins une condition de fonctionnement du moteur créant des oscillations de la richesse mesurée (Mes sond sam) et une modification d'un modèle de la sonde, la sonde étant dite sonde amont. La condition de fonctionnement est identifiée lors d'essais préalables sur le moteur relatifs à l'adaptation de la consigne de richesse (Consrich sond) prédéterminée au moteur avec une mémorisation d'une valeur d'un paramètre de fonctionnement du moteur représentative que la condition est effective. Dès que ladite au moins une valeur est détectée à un instant donné du fonctionnement du moteur, un premier filtrage nominal est suspendu et remplacé par un deuxième filtrage de la richesse mesurée (Mes sond sam). Il est alors effectué une correction d'au moins un paramètre (ttrans, treps) de la sonde.
front page image
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)