Patent ID: 6425379
Filing Date: 2002-07-30
Classification: B60K,F02M,F16K,Y10T

Abstract:
An evaporative emission control system, comprising:an upper valve casing defining a vent conduit; a lower valve casing disposed under the upper valve casing; a float disposed within the lower valve casing, said float being vertically movable depending upon a liquid level of fuel in a fuel tank, said float including a valve portion that faces the upper valve casing; a valve port provided between the upper valve casing and the lower valve casing, said valve port being opened and closed by the valve portion of the float, said upper valve casing defining a space between the vent conduit and the valve port; and a flow restricting device disposed in the space of the upper valve casing so as to obstruct flow of fuel from the valve port to the vent conduit, wherein said flow restricting device comprises a shield device that reduces a cross-sectional area of the space through which the valve port communicates with the vent conduit, and wherein said shield device comprises at least one first shield member that extends downwards from an upper wall of the upper valve casing, and at least one second shield member that extends upwards from a lower wall of the upper valve casing.