Learned EGR valve position control

Details Learned EGR valve position control Learned EGR valve position control

2007-04-03

2007-04-03

Huynh, Hai (Department: 3747)

Internal-combustion engines

Charge forming device

Exhaust gas used with the combustible mixture

Reexamination Certificate

active

11208434

ABSTRACT:
An exhaust gas recirculation (EGR) valve positioning system according to the present invention includes an actuate valve module, an EGR valve position module, and an adjust control variables module. The actuate valve module selectively uses learned and default variables as control variables to position an EGR valve. The EGR valve position module determines whether the EGR valve is positioned in a target position. The adjust control variables module communicates with the actuate valve module and the EGR valve position module and adjusts the learned variables when the EGR valve position module determines that the EGR valve is positioned out of the target position.

REFERENCES:
patent: 6142119 (2000-11-01), Abe et al.
patent: 6640791 (2003-11-01), Itoi et al.
patent: 6980903 (2005-12-01), Daniels et al.
patent: 7013871 (2006-03-01), Zhu et al.
patent: 7021287 (2006-04-01), Zhu et al.
patent: 2005/0126537 (2005-06-01), Daniels et al.
patent: 2006/0102148 (2006-05-01), Nakazawa et al.

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