Adjustable Doser Valve

Abstract

A doser valve with a seat comprising at least one axially located slot from an outer surface of the seat and at least one radial/tangential extending passage in fluid communication with the at least one axially located slot and an exit passage out of the seat.

1 . A doser valve comprising:
 a valve housing defining a first bore graduating to a second bore, and a passage through the housing surrounding the second bore having an inlet and an outlet, the second bore defining an inner diameter;   an armature received within the first bore;   a stop defining a fluid passageway received within the first bore coupled to the armature through a spring;   a solenoid assembly received within the first bore and surrounding the armature and stop comprising at least one bobbin, at least one coil wrapped around the at least one bobbin and coupled to an energy source;   a poppet valve comprising a stem with a first end and a second end, and a stem passageway extending from the first end to the second end, the first end of the stem having an inlet and received by the armature in the first bore of the housing and the second end of the stem received by the second bore of the housing and having an outlet;   a seat receiving the second end of the poppet valve in the second bore and having an outer diameter, the seat comprising at least one radial/tangential extending passage relative to a central axis of an exit passage out of the seat and in fluid communication with the outlet of the stem passageway and the exit passage out of the seat; and   at least one axially located slot from an outer surface of the seat in fluid communication with the second bore of the housing and the at least one radial/tangential extending passage;   wherein when the at least one coil is energized, the armature moves towards the stop, compressing the spring, moving the poppet such that the second end of the stem lifts off of the seat, and fluid from the fluid passageway in the stop flows through the stem passageway into the second bore of the housing and through the at least one radial/tangential extended passage and out of the exit passage of the seat.   
     
     
         2 . The doser valve of  claim 1 , wherein the seat is triangular in shape. 
     
     
         3 . The doser valve of  claim 1 , wherein the second end of the stem is conical in shape. 
     
     
         4 . The doser valve of  claim 1 , wherein coolant continuously passes through the passage in the housing surrounding the second bore. 
     
     
         5 . (canceled) 
     
     
         6 . The doser valve of  claim 1 , further comprising a radial passage is defined between the inner diameter of the second bore and the outer diameter of the seat and the radial passage is in fluid communication with the second bore of the housing and the at least one radial/tangential extending passage. 
     
     
         7 . A doser valve comprising:
 a valve housing defining a first bore graduating to a second bore, and a passage through the housing having an inlet and an outlet;   an armature received within the first bore;   a stop defining a fluid passageway received within the first bore coupled to the armature through a spring;   a solenoid assembly received within the first bore and surrounding the armature and stop comprising at least one bobbin, at least one coil wrapped around the at least one bobbin and coupled to an energy source;   a poppet valve comprising a stem with a first end and a second end, and a stem passageway extending from the first end to the second end, the first end received by the armature in the first bore of the housing and the second end of the stem received by the second bore of the housing, wherein the second end of the stem is conical;   a seat receiving the second end of the poppet valve in the second bore of the housing comprising at least one angled passage;   wherein when the at least one coil is energized, the armature moves towards the stop, compressing the spring, moving the poppet such that the second end lifts off of the seat, and fluid exits through the poppet valve from the stem passageway and through the at least one angled passage[s] in the seat.   
     
     
         8 . The doser valve of  claim 7 , wherein coolant continuously passes through the passage in the housing surrounding the second bore. 
     
     
         9 . (canceled) 
     
     
         10 . The doser valve of  claim 7 , wherein the at least one passage is angled. 
     
     
         11 . A method of setting the flow rate of a doser valve comprising:
 a) monitoring a fluid pressure and a flow rate through a doser valve comprising:
 a valve housing defining a first bore graduating to a second bore, and a passage through the housing surrounding the second bore having an inlet and an outlet; 
 an armature received within the first bore; 
 a stop defining a fluid passageway received within the first bore coupled to the armature through a spring; 
 a solenoid assembly received within the first bore and surrounding the armature and stop comprising at least one bobbin, at least one coil wrapped around the at least one bobbin and coupled to an energy source; 
 a poppet valve comprising a stem with a first end and a second end, and a stem passageway extending from the first end to the second end, the first end of the stem having an inlet and received by the armature in the first bore of the housing and the second end of the stem received by the second bore of the housing and having an outlet; and 
 a seat receiving the second end of the poppet valve in the second bore of the housing; 
   b) comparing the monitored fluid pressure and flow rate to a predetermined fluid pressure and flow rate;   c) altering a position of the stop relative to the armature in the valve housing;   d) fixing the stop in plate relative to the armature and valve housing;   if the monitored fluid pressure and flow rate do not equal the predetermined fluid pressure and flow rate in step b), proceed to step a)   if the monitored fluid pressure and flow rate equal the predetermined fluid pressure and flow rate in step b) proceed to step d).   
     
     
         12 . The method of  claim 11 , further comprising monitoring the fluid pressure and flow rate through the doser valve after the stop has been fixed in place. 
     
     
         13 . The method of  claim 11 , wherein the seat further comprises at least one radial/tangential extending passage relative to a central axis of an exit passage out of the seat and in fluid communication with the second bore of the housing and the exit passage out of the seat. 
     
     
         14 . The method of  claim 13 , wherein the seat further comprises at least one axially located slot from an outer surface of the seat between the at least one radial/tangential extending passage and the second bore of the housing and in fluid communication with the at least one radial/tangential extending passage and the second bore of the housing. 
     
     
         15 . The method of  claim 13 , further comprising a radial passage is defined between the inner diameter of the second bore and the outer diameter of the seat and the radial passage is in fluid communication with the second bore of the housing and the at least one radial/tangential extending passage.