Patent ID: 8839811
Filing Date: 2014-09-23
Classification: F04B,Y10T

Abstract:
1. A drain system of a water pump for a vehicle comprising: a drain hole formed at a water pump housing, wherein coolant having leaked from the water pump passes the drain hole; a drain chamber formed in the water pump housing and providing a space fluid-communicated with the drain hole; a drain plug disposed in the drain chamber and recessed to collect the coolant passing the drain hole; and a plug penetration hole penetrating the drain plug so as to fluid-communicate the space of the drain chamber to an outside of the water pump housing; wherein a part of the coolant collected in the drain plug is vaporized and is exhausted to the outside of the water pump housing through the plug penetration hole; and wherein one end of the drain chamber is communicated with the drain hole and the other end of the drain chamber is open.