Charge air cooler drain system

Abstract

A charge air cooler drain system is provided for an engine system having a turbo-compressor and a charge air cooler for cooling air compressed by the turbo-compressor. The drain system includes a reservoir for storing condensation and having a reservoir inlet and a reservoir outlet A check valve is connected between the reservoir inlet and a condensation outlet of the charge air cooler. The check valve is biased to a closed position by a first spring. The drain system also includes a pilot operated valve connected between the reservoir outlet and atmosphere. The pilot operated valve is biased to an open position by a second spring, and has a pilot inlet exposed to pressure in the charge air cooler. The pilot operated valve closes when pressure in the charge air cooler exceeds a threshold pressure. The first and second springs are chosen so that the check valve is closed when the pilot operated valve is open and the pilot operated valve is closed when check valve is open.

Dependencies are inferred from the claim text.