Patent ID: 6133643
Filing Date: 2000-10-17
Classification: B60K,B60W,F02D

Abstract:
A method for dynamically determining a governor gain for a control algorithm of a fuel control system having a forward control algorithm, a feedback control algorithm, and an engine, comprising the steps of:determining an engine mode;sensing a desired speed of said engine and responsively generating a desired speed signal;sensing an actual speed of said engine and responsively generating an actual speed signal; storing a forward governor gain look-up table for each engine mode, said look-up tables corresponding to a plurality of said desired speeds and modified actual engine speeds;storing a feedback governor gain look-up table for each engine mode, said look-up tables corresponding to a plurality of said desired and actual engine speeds;receiving said desired and actual speed signals and selecting a feedback governor gain look-up table in response to said engine mode, and selecting said feedback gain value from said feedback governor gain look-up table in response to said desired and actual speed signals, determining a modified actual speed in response to said feedback gain value, and generating a modified actual speed signal; and,receiving at least one of said desired and modified actual speed signals and selecting a forward governor gain look-up table in response to said engine mode, and selecting said forward gain value from said forward governor gain look- up table in response to said desired and modified actual speed signals, determining a fuel command in response to said forward gain value, and delivering said fuel command to said engine.