Injection system and method for producing an injection system

摘要

An injection system (1) for injecting fuel at a predetermined fuel pressure has: an actuator (2, 3) providing a stroke for lifting an injector needle (4) that opens a nozzle into which the fuel is injected; a leverage apparatus (5) for translating the provided stroke into a modified stroke, the apparatus has a compensating device (6) coupled to the actuator (2, 3), and a lever device (7), which is coupled to the injector needle (4), wherein the lever device has at least two symmetrically disposed, single-arm levers (8a, 8b), which each come in contact with an injector needle head (10) of the injector needle (4) when lifting the injector needle (4) by means of a single needle head support (9a, 9b); and wherein the compensating device (6) is suited to compensate a varying force application of the actuator (2, 3) on the single-arm lever (8a, 8b).

主权项

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.