Boosted engine charge air cooler condensation reduction device

摘要

Methods and systems are provided for providing auxiliary heat to a charge air cooler to reduce condensate formation. A coolant valve may control the delivery of heated engine coolant to the inlet side of the charge air cooler. The coolant valve may be adjusted based on condensate formation in the charge air cooler and a temperature at the charge air cooler outlet.

主权项

1. A method for operating an engine, comprising:
adjusting, via an electronic controller, heating to a charge air inlet side of an air-to-air charge air cooler (CAC) by adjusting a valve coupled with the engine responsive to an operating condition to heat charge air flowing through the charge air inlet side of the air-to-air CAC with liquid coolant while ambient air flows across the air-to-air CAC to cool charge air flowing through the air-to-air CAC, the adjusting heating including increasing a temperature of the charge air entering the charge air inlet side of the air-to-air CAC in response to an increased condensate formation within the air-to-air CAC.