Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1997-07-02
1998-05-05
Nelli, Raymond A.
Internal-combustion engines
Charge forming device
Fuel injection system
F02M 5100
Patent
active
057461830
ABSTRACT:
A method and system for determining and controlling the fuel mass to be delivered to an individual cylinder of an internal combustion engine during engine transients compensates for fuel transport dynamics and the actual fuel injected into the cylinder. A plurality of engine parameters are sensed, including cylinder air charge. An initial base desired fuel mass is determined based on the plurality of engine parameters. An initial transient fuel mass is also determined based on prior injection history for that cylinder. A desired injected fuel mass to be delivered to the cylinder is determined based on the initial base desired fuel mass and the initial transient fuel mass. These same calculations are then used to compensate for changes to the base desired fuel mass while the fuel injection is in progress, resulting in an updated desired injected fuel mass. Finally, the injection history for that cylinder is updated to account for the actual desired fuel mass delivered to the cylinder.
REFERENCES:
patent: 5546910 (1996-08-01), Messih et al.
patent: 5564393 (1996-10-01), Asano et al.
patent: 5584277 (1996-12-01), Chen et al.
patent: 5609139 (1997-03-01), Ueda et al.
SAE Technical Paper No. 961188, "Model-Based Fuel Injection Control System For SI Engines", by Masahiro Nasu et al, May 6-8, 1996, pp. 85-95.
Doering Jeffrey Allen
Marzonie Robert Matthew
Mingo Paul Charles
Parke Alastair William
Zhang Xiaoying
Ford Global Technologies Inc.
Lippa Allan J.
May Roger L.
Nelli Raymond A.
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