Control system to minimize white smoke using variable nozzle turbo

A method for operating an internal combustion engine having a turbocharger that generates a boost to said engine, said method comprising:

• measuring engine parameters including determining a coolant temperature of said engine;
• determining if a supplemental boost control is necessary based on said engine parameters;
• determining a normal boost based on operating conditions of said engine;
• determining a supplemental boost based on said coolant temperature, said supplemental boost defined by a net increase in boost;
• determining an offset boost based on said normal boost and said supplemental boost;
• and
• modifying an output of said turbocharger based on said offset boost.

A control system for controlling a variable nozzle turbo (VNT) for an engine, comprising:

• a normal boost module that calculates a normal boost;
• a supplemental boost module that calculates a supplemental boost defined by a net increase in boost;
• an offset boost module that generates an offset boost signal for said VNT based on said normal boost and said supplemental boost;
• and
• a control module that adjusts VNT boost based on said offset boost signal.