Method and apparatus for determining a valve operator position

Internal-combustion engines – Charge forming device – Exhaust gas used with the combustible mixture

Reexamination Certificate

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Details

C701S103000, C701S108000, C123S568210

Reexamination Certificate

active

07047953

ABSTRACT:
A valve operator position is determined for an exhaust gas recirculation valve (117) for an internal combustion engine (101). The valve position may be adjusted (313) for transient engine speed conditions and/or adjusted (309) for transient engine load conditions. During high transient states, the EGR valve is closed more, to allow more air to reach the cylinders of the engine, thereby improving engine performance.

REFERENCES:
patent: 6508237 (2003-01-01), Romzek et al.
patent: 6698409 (2004-03-01), Kennedy et al.
patent: 05- 172008 (1993-07-01), None

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