Patent ID: 8087399
Filing Date: 2012-01-03
Classification: F02M,Y10T

Abstract:
1. An injection valve, comprising: an injector body with a central longitudinal axis and a first cavity, a valve body, being disposed at least partially within the first cavity and comprising a second cavity, a valve needle, being axially movable in the second cavity and preventing a fluid injection in a closing position and permitting the fluid injection in further positions, an armature, being axially movable at least partially within the first cavity and comprising a first cylindrical portion and a second cylindrical portion, an outer diameter of the first cylindrical portion being greater than an outer diameter of the second cylindrical portion, the second cylindrical portion being mechanically coupled to the valve needle, a coil assembly, comprising a bobbin that retains a coil and being operable to magnetically actuate the armature and the valve needle to move axially, an armature collar, being axially movable in the first cavity and being cylindrically shaped with a third cavity, which partially takes in the second cylindrical portion of the armature, an outer diameter of the armature collar being basically equal to the outer diameter of the first cylindrical portion of the armature, an armature collar spring, being preloaded and being adopted to supply the armature collar with a spring load to push the armature collar towards the first cylindrical portion of the armature.