Techniques for determining condensation accumulation and depletion at a charge air cooler of a turbocharged engine having a low pressure cooled EGR system

A method of controlling ingestion of water vapor into a turbocharged engine having a low pressure cooled exhaust gas recirculation (LPCEGR) system and an induction system with a charge air cooler (CAC), the method comprising:

• receiving, by a controller and from a set of one or more sensors, measured humidity and temperature of a mixture of (i) air drawn into the induction system and (ii) exhaust gas produced by the engine that is cooled and recirculated by the LPCEGR system back into the induction system;
• determining, by the controller, a dew point of the CAC based on the air/exhaust gas mixture humidity and temperature;
• and
• when the air/exhaust gas mixture temperature is less than the CAC dew point:
• determining, by the controller, a condensate accumulation in the CAC,
• when the CAC condensate accumulation does not satisfy a set of one or more thresholds, increasing, by the controller, the air/exhaust gas mixture temperature, and
• when the CAC condensate accumulation satisfies the set of one or more thresholds, decreasing, by the controller, an amount of the exhaust gas that is cooled and recirculated by the LPCEGR system until the air/exhaust gas mixture temperature meets the CAC dew point.