A unit pump with an actuator carrier and an actuator carrier thereof

Abstract

An actuator carrier comprises an aperture being adapted to receive actuator and a bore being adapted to carry high pressure fluid through the carrier. The actuator carrier can be incorporated into a unit pump allowing for a more efficient design and manufacture process, including linear alignment of all of the unit pumps primary components.

What is claimed is:  
     
         1 . A unit pump comprising: 
 a tappet moveable between a first position and a second position, a cam being adapted to come in contact with said unit pump and move said tappet between said first and said second position;    a spring connected to bias said tappet in said first position;    a pump body having a fuel cavity;    a plunger connected to said tappet and at least partially disposed in said fuel cavity and being moveable between a third position and a fourth position within said fuel cavity, said plunger being adapted to pressurize fuel in said fuel cavity;    a spill valve disposed within said pump body; said spill valve adapted to control a flow of fuel from said fuel cavity;    an actuator carrier having an aperture;    an actuator disposed in the said aperture and being adapted to actuate said spill valve;    a bore disposed in said actuator carrier and being adapted to pass said pressurized fuel from said fuel cavity through said actuator carrier; and    a fuel line fitting.    
     
     
         2 . The unit pump of  claim 1  wherein said solenoid carrier is metallic.  
     
     
         3 . The unit pump of  claim 1  wherein said solenoid carrier's said bore communicates between a first surface of said carrier and a second surface of said carrier.  
     
     
         4 . The unit pump of  claim 3  wherein said first and second surfaces are adapted to seal with adjacent components.  
     
     
         5 . The unit pump of  claim 1  further comprising dowel holes for positioning said carrier and preventing rotation.  
     
     
         6 . The unit pump of  claim 1  wherein said tappet, said spring, said fuel cavity, said plunger, said spill valve, and said actuator carrier, are substantially linearly aligned.  
     
     
         7 . The unit pump of  claim 1  wherein said spill valve is aligned linearly with said unit pump.  
     
     
         8 . The unit pump of  claim 1  wherein said actuator is a solenoid.  
     
     
         9 . A unit pump comprising: 
 a tappet moveable between a first position and a second position, a cam being adapted to come in contact with said unit pump and move said tappet between said first and said second position;    a spring connected to bias said tappet in said first position;    a pump body having a fuel cavity;    a plunger connected to said tappet and at least partially disposed in said fuel cavity and being moveable between a third position and a fourth position within said fuel cavity, said plunger being adapted to pressurize fuel in said fuel cavity;    a spill valve disposed within said pump body; said spill valve adapted to control a flow of fuel from said fuel cavity;    an actuator being adapted to actuate said spill valve;    wherein said tappet, said spring, said fuel cavity, said plunger, said spill valve, and said actuator, are substantially linearly aligned.    
     
     
         10 . An actuator carrier comprising: 
 a carrier having an aperture, said aperture adapted to receive an actuator; and    a bore; said bore being adapted to carry high pressure fluid through said carrier with contacting said actuator.    
     
     
         11 . The actuator carrier of  claim 10  wherein said carrier is metallic.  
     
     
         12 . The actuator carrier of  claim 10  wherein said bore communicates between a first surface of said carrier and a second surface of said carrier.  
     
     
         13 . The actuator carrier of  claim 12  wherein said first and second surfaces are adapted to seal with adjacent components.  
     
     
         14 . The actuator of  claim 13  wherein said first surface is adapted to seal with a valve body and said second surface is adapted to seal with an adapter.  
     
     
         15 . The actuator carrier of  claim 10  further comprising dowel holes for positioning said carrier and preventing rotation.  
     
     
         16 . The actuator carrier of  claim 10  wherein said actuator is a solenoid.