Fluid handling – Systems – Multi-way valve unit
Patent
1998-12-18
2000-02-29
Michalsky, Gerald A.
Fluid handling
Systems
Multi-way valve unit
13762564, 25112915, 25112917, 25112918, F15B 13043, F16K 3106
Patent
active
060297034
ABSTRACT:
A solenoid control valve (10) that includes an electromagnetic coil (30) positioned within a housing (16) and a spool valve (72) positioned within a central bore (70) of a valve body (20). An armature (40) is axially positioned within the coil (30) and an armature spring (52) biases the armature (40) against an opening in the central bore (70) when the coil (30) is not energized. The spool valve (72) includes an internal chamber and a pair of sealing lands (98,100) that selectively seal a supply port (92) and a control port (94) within the valve body (20). A pole piece (26), including an annular flux shunt portion (62), is threadably engaged with the housing (16) to control a working air gap (60) between the pole piece (26) and the armature (40). The flux shunt portion (62) more radially directs the electromagnetic field lines to weaken the magnetic force as the armature (40) moves closer to the pole piece (26). A deep drawn flux tube (64) is positioned within the housing (16), and the flux tube (64) and the housing (16) are attached to the valve body (20) by a crimped connection (22) at a common location.
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Erickson Bradley C.
Holmes Garrett R.
Borg-Warner Automotive Inc.
Dzielewski Greg
Michalsky Gerald A.
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