Drain Valve For An Air Intake System Of A Machine

A method of operating a machine, the machine including an internal combustion engine mounted on a chassis and having an intake manifold, an air intake system extending from an air inlet to the intake manifold and including a condensate collection location, a liquid system including a pump that is mechanically coupled to the internal combustion engine, and a drain valve positioned in the air intake system at the condensate collection location and including a valve member, the method comprising the steps of:

• running the internal combustion engine, wherein the running step includes:
• pressurizing a liquid within the liquid system;
• exposing a closing surface of the valve member to the pressurized liquid;
• moving the valve member to a closed position;
• and collecting condensate at the condensate collection location;
• and
• stopping the internal combustion engine, wherein the stopping step includes:
• bringing the liquid to atmospheric pressure;
• moving the valve member to an open position;
• and draining condensate from the condensate collection location through a discharge opening in the air intake system.

A drain valve for an air intake system of a machine, the machine including an internal combustion engine mounted on a chassis and having an intake manifold, and a liquid system including a pump that is mechanically coupled to the internal combustion engine, the air intake system extending from an air inlet to the intake manifold and including a condensate collection location, the drain valve including:

• a valve body;
• a valve member positioned within the valve body, the valve member having a closed position wherein a closing surface of the valve member is exposed to pressurized liquid within the liquid system and the condensate collection location is fluidly blocked from a discharge opening in the air intake system, and an open position wherein the condensate collection location is fluidly connected to the discharge opening;
• and
• a spring operably positioned within the valve body to bias the valve member toward the open position.