Patent ID: 8209979

Claim:
System useful for controlling a combustion engine including a variable-geometry forced induction component, said system comprising: a plurality of sensors providing information relating to operation of said engine including: an engine r.p.m.; an engine load; an exhaust pressure; a boost pressure; and an orientation of the variable-geometry forced induction component; a control module having memory, configured to receive a plurality of inputs, and configured to provide at least one output signal responsive to said inputs, said control module further comprising: receiving at least four inputs selected from the group consisting of: the engine r.p.m.; the engine load; the exhaust pressure; the boost pressure; an exhaust pressure limit; and a boost pressure limit; determining a feed-forward first orientation for at least one engine system component selected from the group consisting of: a by-pass valve; and the variable-geometry forced induction component, the feed-forward first orientation for the by-pass valve based on the orientation of the variable-geometry forced induction component and the feed-forward first orientation for the variable-geometry forced induction component based on an orientation of the by-pass valve; outputting a command for effecting a change in orientation of said at least one engine system component to substantially achieve said first orientation; receiving the information relating to the orientation of the variable-geometry forced induction component; and determining a feed-forward second orientation for at least one engine system component selected from the group consisting of: the by-pass valve; and the variable-geometry forced induction component, responsive to at least five inputs selected from the group consisting of: the engine r.p.m.; the engine load; the orientation of the variable-geometry forced induction component; the boost pressure limit; the boost pressure; the exhaust pressure limit; and the exhaust pressure, the feed-forward second orientation for the by-pass valve based on the orientation of the variable-geometry forced induction component and the feed-forward second orientation for the variable-geometry forced induction component based on the orientation of the by-pass valve.