Method of feedforward controlling a multi-cylinder internal...

Details Method of feedforward controlling a multi-cylinder internal... Method of feedforward controlling a multi-cylinder internal...

2007-10-30

2007-10-30

Solis, Erick (Department: 3747)

Internal-combustion engines

Charge forming device

Including exhaust gas condition responsive means

Reexamination Certificate

active

11367736

ABSTRACT:
The amount of fuel to be injected in each cylinder of a multi-cylinder spark ignition internal combustion engine may be determined with enhanced precision if the fuel injection durations are determined as a function of the sensed mass air flow in all the cylinders of the engine, instead of considering only the air flow in the same cylinder. This finding has led to the realization of a more efficient approach of controlling a multi-cylinder spark ignition internal combustion engine and a feedforward control system.

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“Cylinder Air/Fuel Ratio Estimation Using Net Heat Release Data”, Tunestal et al; IFAC Workshop on Advances in Automotive Control, Mar. 28, 2001, pp. 239-247, XP001032740.
“Cylinder Air/Fuel Ratio Estimation Using Net Heat Release Data”, Tunestal et al; Control Engineering Practice, Pergamon Press, Oxford, GB, vol. 11, No. 3, 2003, pp. 311-318, XP001157572, ISSN: 0967-0661.
Patent Abstracts of Japan, vol. 2000, No. 25, Apr. 12, 2001 & JP 2001234798, Aug. 31, 2001.

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