Intake oxygen estimator for internal combustion engine

Details Intake oxygen estimator for internal combustion engine Intake oxygen estimator for internal combustion engine

2006-10-03

2006-10-03

Vo, Hieu T. (Department: 3747)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

With indicator or control of power plant

C701S108000, C123S672000

Reexamination Certificate

active

07117078

ABSTRACT:
An internal combustion engine system includes an intake manifold, a combustion chamber, an exhaust manifold and exhaust gas recirculation apparatus for recirculating a portion of the exhausted gases from the exhaust manifold to the intake manifold. An estimate intake manifold oxygen concentration is determined from the air fraction within the intake manifold which is determined from an engine system model that provides interdependent air mass fractions at various locations within the engine system.

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patent: 2006/0020386 (2006-01-01), Kang
patent: 10-77883 (1998-03-01), None
Nakayama et al., A New Dynamic Combustion Control Method Based on Charge Oxygen Concentration for Diesel Engines, SAE Intl., 2003-01-3181, USA.
Diop et al., Intake Oxygen Concentration Estimation for Diesel Engines, IEEE, International Conference on Control Applications, Aug. 22-27, 1999, USA.

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