Patent ID: 7542842

Claim:
A method of controlling a direct injection internal combustion engine, said method comprising: (a) calculating output data from system data, said system data comprising: (1) an injector geometry defined by a fuel injector in fluid communication with a combustion chamber of said engine, (2) an engine geometry defined by said engine, (3) an engine operating command based on a desired engine output, (4) an initial injector command, (5) an engine speed, said engine operating command being indicative of a commanded torque for said engine, said output data comprising: an engine out value indicative of a brake torque delivered by said engine, and an output control parameter indicative of a cylinder pressure value, (b) when said output data does not satisfy a predetermined relationship, determining a subsequent injector command and recalculating said output data with said subsequent injector command, where said predetermined relationship compares said output data and said engine operating command and a demanded control parameter, said demanded control parameter being indicative of a maximum cylinder pressure value, (c) when said output data satisfies said predetermined relationship, commanding said injector to provide fuel to said combustion chamber according to a last injector command.