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1. WO2020115098 - METHOD FOR CONTROLLING AN INTERNAL COMBUSTION ENGINE WITH LEARNING OF ATMOSPHERIC PRESSURE

Publication Number WO/2020/115098
Publication Date 11.06.2020
International Application No. PCT/EP2019/083602
International Filing Date 04.12.2019
IPC
F02D 41/24 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
41Electrical control of supply of combustible mixture or its constituents
24characterised by the use of digital means
CPC
F02D 2200/0406
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
2200Input parameters for engine control
02the parameters being related to the engine
04Engine intake system parameters
0406Intake manifold pressure
F02D 2200/704
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
2200Input parameters for engine control
70said parameters being related to the vehicle exterior
703Atmospheric pressure
704Estimation of atmospheric pressure
F02D 2250/14
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
2250Engine control related to specific problems or objectives
14Timing of measurement, e.g. synchronisation of measurements to the engine cycle
F02D 41/2451
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
41Electrical control of supply of combustible mixture or its constituents
24characterised by the use of digital means
2406using essentially read only memories
2425Particular ways of programming the data
2429Methods of calibrating or learning
2451characterised by what is learned or calibrated
Applicants
  • CONTINENTAL AUTOMOTIVE FRANCE [FR]/[FR]
  • CONTINENTAL AUTOMOTIVE GMBH [DE]/[DE]
Inventors
  • MOINE, Xavier
  • DUPOUY, Yohan
Agents
  • MAJEWSKI, Marc
Priority Data
FR187228604.12.2018FR
Publication Language French (FR)
Filing Language French (FR)
Designated States
Title
(EN) METHOD FOR CONTROLLING AN INTERNAL COMBUSTION ENGINE WITH LEARNING OF ATMOSPHERIC PRESSURE
(FR) PROCÉDÉ DE COMMANDE D'UN MOTEUR À COMBUSTION INTERNE À APPRENTISSAGE DE LA PRESSION ATMOSPHÉRIQUE
Abstract
(EN)
Method for controlling an internal combustion engine provided with a crankshaft position sensor, an admitted-air pressure sensor and a fresh air intake throttle valve, comprising the following steps: • determining the rotational speed of the internal combustion engine as a function of the derivative of the position of the crankshaft with respect to time, • determining the intake-air pressure for a first position of the crankshaft corresponding to 180° before combustion top dead centre, • determining the intake-air pressure for a second position of the crankshaft corresponding to 390° before combustion top dead centre, • determining an atmospheric pressure learning pressure threshold as a function of the rotational speed of the internal combustion engine, • determining whether the difference between the intake-air pressure for the first crankshaft position and the intake-air pressure for the second crankshaft position is below the atmospheric pressure learning pressure threshold, • if so, commanding the learning of the atmospheric pressure by applying a first-order filter to the intake-air pressure for the second position of the crankshaft, and • controlling the internal combustion engine according to the learned value of the atmospheric pressure.
(FR)
Procédé de commande d'un moteur à combustion interne muni d'un capteur de position du vilebrequin, d'un capteur de pression d'air admis et d'un papillon d'admission d'air frais, comprenant les étapes suivantes: • on détermine la vitesse de rotation du moteur à combustion interne en fonction de la dérivée de la position du vilebrequin par rapport au temps, • on détermine la pression d'air admis pour une première position du vilebrequin correspondant à 180° avant le point mort haut combustion, • on détermine la pression d'air admis pour une deuxième position du vilebrequin correspondant à 390° avant le point mort haut combustion, • on détermine un seuil de pression d'apprentissage de la pression atmosphérique en fonction de la vitesse de rotation du moteur à combustion interne, • on détermine si la différence entre la pression d'air admis pour la première position du vilebrequin et la pression d'air admis pour la deuxième position du vilebrequin est inférieure au seuil de pression d'apprentissage de la pression atmosphérique, • si tel est le cas, on commande l'apprentissage de la pression atmosphérique en appliquant un filtre du premier ordre à la pression d'air admis pour la deuxième position du vilebrequin, et • on commande le moteur à combustion interne en fonction de la valeur apprise de la pression atmosphérique.
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