Fuel injection device for e.g. diesel engine, has auxiliary fuel inlet duct with shutter driven from closing position towards releasing position when pressure of fuel in main fuel inlet ducts is lower than pressure in auxiliary duct

摘要

The device has an auxiliary fuel inlet duct (36) with a downstream end (38) connected to main fuel inlet ducts (16, 20) near a fuel spray orifice (26). The duct (36) has an upstream end (40) connected to a rail (12). The duct (36) has a shutter (46) that is driven from a closing position towards a releasing position when the pressure of the fuel in the ducts (16, 20) is lower than the pressure in the duct (36).