초록 ▼

An isolation valve for controlling fluid flow in a vehicular braking system, the valve comprising: a solenoid coil assembly; an armature moveably positioned within the solenoid coil assembly, the armature having a ball end engaging a ball seat and an edge groove at the ball end to modify Bernoulli f

An isolation valve for controlling fluid flow in a vehicular braking system, the valve comprising: a solenoid coil assembly; an armature moveably positioned within the solenoid coil assembly, the armature having a ball end engaging a ball seat and an edge groove at the ball end to modify Bernoulli force that affects movement of the armature when the solenoid coil assembly is de-energized. Another embodiment of the invention is an isolation valve for use in a hydraulic control unit for a vehicular brake system, the isolation valve comprising: a valve body housing defining a valve cavity; a valve stem mounted in the valve cavity, the valve stem having a coaxial fluid passage therethrough; a cylindrical sleeve mounted on the valve body surrounding the valve stem; an armature slidably mounted in the cylindrical sleeve and biased by a spring in a normally open position; the armature having a valve end for controlling fluid flow through the coaxial fluid passage, and an edge groove, an outer step, an is annular cavity, or a combination thereof at the valve end to modify Bernoulli force that affects movement of the armature. Also described is a method for making an isolation valve having the above described characteristics.

대표청구항 ▼

1. A valve for use in a vehicular brake system, comprising:a valve body with a valve seat and a flow passage through said valve seat; and an armature with a valve member and a groove, said valve member sized to engage said valve seat to block flow through said flow passage, said groove positioned an

1. A valve for use in a vehicular brake system, comprising:a valve body with a valve seat and a flow passage through said valve seat; and an armature with a valve member and a groove, said valve member sized to engage said valve seat to block flow through said flow passage, said groove positioned and configured to produce a negligible Bernoulli force when said armature is in a fully opened position and a significant closing Bernoulli force when said armature is partially opened.