Variable valve system to reduce condensation in a charge air cooler

摘要

Methods and systems are provided for regulating air flow through a charge air cooler. In one example, an air flow regulating element may be positioned in a tank of the charge air cooler, the air flow regulating element including a cylindrical barrel valve rotatable about a rotational axis to adjust air flow through cooling tubes in the charge air cooler. A position of the barrel valve may be based on a mass air flow rate and/or a temperature at an outlet of the charge air cooler.

主权项

1. An air flow regulating system for a charge air cooler (CAC), comprising:
an air flow regulating element including a cylindrical barrel valve positioned in a tank of the CAC, the barrel valve adjustable to alter a number of cooling tubes in the CAC through which air flows, an outer wall of the barrel valve including a series of staggered slots of different circumferential lengths, each slot aligning with one cooling tube of the cooling tubes.