Patent ID: 7236876

Claim:
A method of collecting engine response data from an internal combustion engine, the engine having a number of actuators, comprising: defining a set of input parameters to the engine; wherein the input parameters represent settings of one or more engine actuators; defining a set of engine response variables; defining one or more of the engine response variables as slow response variables, which are slow to reach steady state after a change in one or more of the input parameters; defining one or more of the engine response variables as fast response variables, which are fast to reach steady state after a change in one or more of the input parameters; operating the system for a succession of settings for at least one actuator; acquiring response data at a time before the one or more slow response variables have reached steady state and after the one or more fast response variables have reached steady state; and correcting the response data with data representing the effect of the one or more slow response variables.