Patent ID: 8807450
Filing Date: 2014-08-19
Classification: F02M,Y10T

Abstract:
1. An injection system for injection of fuel at a predetermined fuel pressure comprising: an actuator, which provides a stroke for lifting an injector needle in an axial direction which opens a nozzle into which the fuel is injected; a lever transmission facility for translating the stroke provided into a modified stroke, which lever transmission facility comprises a compensation device which is coupled to the actuator and a lever device which is coupled to the injector needle, wherein the stroke provided by the actuator drives the compensation device in a first direction toward the injector needle; wherein the lever device comprises at least two symmetrically-arranged single-arm levers which each contact an injector needle head of the injector needle during lifting of the injector needle, wherein each single-arm lever forms a substantially U-shaped semicircle in a plane perpendicular to the axial direction, such that the at least two single-arm levers generally form a circle in the plane perpendicular to the axial direction; wherein the single-arm levers provide a coupling between the compensation device and the injector needle such that the single-arm levers convert a translation of the compensation device, driven by the actuator, in the first direction to a translation of the injector needle in a second, opposite direction; and wherein the compensation device is suitable for compensating for a different force effect of the actuator on the single-arm levers.