Patent ID: 6209527
Filing Date: 2001-04-03
Classification: F16K,Y10T

Abstract:
A pressure regulating valve for regulating a flow of fuel, comprising means forming a valve chamber having an inlet for connecting to a pressure source; means forming a discharge chamber communicating through a valve opening with said valve chamber; a valve member arranged so that fuel to be regulated flows around said member; a valve seat surrounding said valve opening, a valve closing spring which presses said valve member against said valve seat with an adjustable spring force; and a throttling surface arranged downstream of said valve opening so that between said valve member and an inner wall of said discharge chamber, a pressure is formed at said valve member which counteracts said spring force, said valve member being guided on an inner wall of said discharge chamber with a guiding gap which is dimensioned for an operationally safe guidance and has a narrow tolerance, said wall of said control chamber having a throughgoing throttling opening which opens in a region between said valve seat and a guiding surface formed on said valve member, said throttling surface being formed as a surface sum of an opening cross-section of a throttling opening and a ring surface of a ring formed by a guiding gap between said valve member and said inner wall of said discharge chamber.