EP 1429012 A1 20040616 - Method and system for estimation of air charge of an engine
Title (en)
Method and system for estimation of air charge of an engine
Title (de)
Verfahren und System zur Schätzung der Zylinderluftmenge einer Brennkraftmaschine
Title (fr)
Méthode et système pour estimer la charge d'air admise dans un moteur à combustion interne
Publication
Application
Priority
EP 02445173 A 20021209
Abstract (en)
The invention relates to a method for estimation of air charge of an engine comprising at least one cylinder (1), an air inlet (3) and an intake manifold (8), said method comprising: measuring the air flow via said air inlet (3), and measuring the pressure in said intake manifold (8). The method further comprises: determining whether the engine is operated at a steady state condition or a transient condition by measuring the pressure in the intake manifold (8), determining a measure of the air charge of said cylinder (1) by measuring the air flow via said air inlet (3) during said steady state condition and by measuring said pressure during said transient condition, correcting said measure of said air charge by means of a correction value (θ) during said transient condition, and adapting said correction value (θ) during said steady state condition. The invention also relates to a system for estimation of air charge of an engine. By means of the invention, an improved system for determining the engine load is obtained, which in particular can be used during sharp transients in the engine load. <IMAGE>
IPC 1-7
IPC 8 full level
F02D 41/14 (2006.01); F02D 41/18 (2006.01); F02D 41/32 (2006.01)
CPC (source: EP)
F02D 41/18 (2013.01); F02D 41/182 (2013.01); F02D 41/2454 (2013.01); F02D 41/32 (2013.01); F02D 41/2441 (2013.01); F02D 41/2477 (2013.01); F02D 2200/0402 (2013.01); F02D 2200/0406 (2013.01)
Citation (applicant)
- US 5635634 A 19970603 - REUSCHENBACH LUTZ [DE], et al
- US 2002133286 A1 20020919 - KOLMANOVSKY ILYA V [US], et al
Citation (search report)
- [XY] EP 0674101 A2 19950927 - GEN MOTORS CORP [US]
- [X] US 5070846 A 19911210 - DUDEK KENNETH P [US], et al
- [Y] EP 0654594 A2 19950524 - GEN MOTORS CORP [US]
- [DA] EP 1227233 A1 20020731 - FORD GLOBAL TECH INC [US]
Designated contracting state (EPC)
DE GB SE
DOCDB simple family (publication)
DOCDB simple family (application)
EP 02445173 A 20021209