Pressure-controlled fluid injection device e.g. for diesel engine fuel injection system, has pressure compensation device for providing intermediate pressure in feed region for injection jet between injection cycles

摘要

The invention relates to a device for the pressure controlled injection of a fluid with at least one injection nozzle (14) which can be controlled depending on the pressure applied and means for supplying said pressure in an inlet area (12) of said injection nozzle (14). Compensating means (20, 22, 24, 26, 28, 30, 32) are also provided. Said means communicate with the inlet region (12) in a controlled manner.The invention also relates to a method for pressure-controlled injection of a fluid wherein the opening pressure of the pressure-controlled injection system is built up in an inlet area (12) of at least one injection nozzle. Communication of the inlet area (12) with compensating means (20, 22, 24, 26, 28, 30, 32) alters the pressure in the inlet area (12).