Patent ID: 8364381

Claim:
A control system for an engine comprising: a speed error determination module that periodically determines an engine speed error rate based on a difference between a measured speed of said engine and a desired speed of said engine; and a torque reserve module that: selectively adjusts a torque reserve of said engine based on said engine speed error rate, wherein said torque reserve is a difference between a predicted torque and an immediate torque, and wherein said torque reserve indicates a present maximum capability to increase said immediate torque; maintains said torque reserve at a first torque reserve amount while said engine speed error rate is less than a first error rate; increases said torque reserve above said first torque reserve amount at a first predetermined rate when said engine speed error rate increases above said first error rate; and subsequently decreases said torque reserve at a second predetermined rate when said engine speed error rate decreases below said first error rate.