Regulator apparatus for a fuel injection pump

Claim 1

A regulator apparatus for the supply quantity of a fuel injection pump for an internal combustion engine comprising a housing, a stroke piston fuel distribution pump in said housing, said pump including a pump work chamber, a reciprocating and rotatable piston, cooperating with said work chamber, an axially disposed bore in said piston extending from said work chamber, a fuel distributor groove in said piston, a radial bore in said piston extending from said axially extending bore to said fuel distribution groove, a cross bore in said piston near one end thereof, a ring slide positioned around said piston for closing and opening said cross bore for either beginning or stopping fuel delivery, a control lever supported within said housing near said ring slide, an adjusting means for limiting movement of said control lever in one direction, a regulator lever supported by said control lever for pivotable movement about one end thereof, said ring slide supported on one end of said regulator lever for movement therewith, a regulatory spring secured to the unsupported end of said regulator lever for applying a force to said regulator lever in a direction opposite from said adjusting screw, a solenoid including a coil, a core, and an armature secured within said housing in an area between said regulator spring and said supported end of said regulator lever, said armature engaging said unsupported end of said regulator lever for applying a force on said regulator lever counter to that of said regulatory spring, and a travel path transducer disposed within said housing for measuring the movement of said regulator lever.