Methods and systems for purging condensate from a charge air cooler

A method for a boosted engine, comprising:

• responsive to a condensate level within a charge air cooler increasing above a threshold,
• during a first condition, purging condensate from the charge air cooler towards an exhaust catalyst via engine cylinders;
• and
• during a second condition, purging condensate from the charge air cooler towards an intake air filter.

A hybrid vehicle system, comprising:

• an engine including an intake manifold, the intake manifold communicating with ambient air via an intake passage;
• a compressor coupled to the intake passage upstream of an intake throttle;
• a charge air cooler coupled downstream of the compressor;
• a conduit coupled to the intake passage at a location upstream of the compressor and downstream of an intake air filter;
• a check valve located within the conduit;
• and
• a controller with computer readable instructions stored on non-transitory memory for:
• during a first condition, increasing air flow through the charge air cooler in a first direction;
• during a second condition, increasing air flow through the charge air cooler in a second opposite direction;
• and
• during a third condition, changing the direction of airflow through the charge air cooler from the first direction to the second direction;
• wherein the first condition includes a condensate level above a threshold, a vehicle ON condition, an accelerator pedal input greater than a threshold input, and an exhaust catalyst temperature above a threshold temperature.