Patent ID: 8689760

Claim:
A poppet valve for controlling fuel in an electromagnetically actuated valve assembly for a diesel engine fuel-injection system comprising, in coaxial relation, a stem with a cylindrical guide, and a circular neck, and a circular head, the stem and neck being smaller in cross-section than the guide and the head being larger in diameter than the guide, the head having a conical surface facing the guide, the conical surface consisting of a dual angle configuration with a seat angle surface having a seat angle surface extending from the circular neck and having a radius greater than a radius of the guide and an outer angle surface having radii larger than the radii of the seat angle surface and intersecting the seat angle surface, the seat angle surface being described by a first obtuse angle with respect to an axis of the poppet and the outer angle surface being described by an obtuse angle with respect to the axis that is larger than the first obtuse angle by less than 10 degrees.