METHODS AND SYSTEMS FOR CONDENSATION CONTROL

摘要

Methods and systems are provided for reducing condensate accumulation at a charge air cooler (CAC) during cold ambient conditions. A wastegate may be held closed while a compressor recirculation valve is held open during an engine cold start so as to use compressor heating and increased compressor recirculation to expedite CAC heating. EGR delivery is delayed until the CAC is sufficiently warm to reduce the propensity for condensation.

主权项

1. A method for a boosted engine, comprising:
closing a wastegate and an EGR valve while opening a compressor recirculation valve to heat a charge air cooler coupled downstream of a compressor responsive to cold conditions.