Patent ID: 6588857
Filing Date: 2003-07-08
Classification: B60T,F16K,Y10S

Abstract:
A solenoid valve for brake systems, comprising:a hollow valve housing having an oil inlet passage on a sidewall thereof, with a bore axially defined in said valve housing; a plunger movably received in said bore of the valve housing so as to axially move in the bore in opposite directions by an electric force; a valve seat set in said bore of the valve housing, with an orifice axially formed in said valve seat such that the orifice is opened or closed by an end of said plunger in accordance with an axial movement of the plunger; a radial oil port formed on a sidewall of said valve seat so as to allow oil from the oil inlet passage of the valve housing to flow into the valve seat through the radial oil port, and flow from the valve seat toward the plunger through said orifice of the valve seat; a plug closing a lower end of the bore of said valve housing, thus allowing the oil to flow from the valve seat toward the plunger through the orifice; and an oil outlet passage axially formed in the sidewall of said valve housing in parallel to the bore such that the oil outlet passage communicates at a top end thereof with an outlet of said orifice, said oil outlet passage feeding the oil from the outlet of said orifice to an area under a bottom of said valve housing.