Patent ID: 7832379
Filing Date: 2010-11-16
Classification: F02M,Y10T

Abstract:
1. In a device for pumping fuel, having a suction jet pump and a drive line that supplies the suction jet pump with fuel, which drive line branches off from a pressure line leading to an internal combustion engine and is closable by means of a shutoff valve, the improvement wherein the pressure of the pressure line acts on the shutoff valve in such a way that the shutoff valve closes at a pressure that is greater than or equal to a predetermined closing pressure, and wherein the closing pressure of the shutoff valve is greater than the pressure in the pressure line in full-load operation of the engine, wherein the feed pump is regulated upon engine starting such that the pressure in the pressure line attains a value which is greater than the closing pressure of the shutoff valve and greater than the pressure in the pressure line at full load, wherein the shutoff valve has both an input connection, fluidically communicating upstream with the pressure line, and a control connection as well as an output connection leading downstream to the at least one suction jet pump, and wherein the input connection discharges into a valve chamber, in which a first closing body, cooperating with a first valve seat is located.