Fuel injection device with air-assisted fuel diffusion
AssigneeSiemens Automotive Corporation
InventorGerhard Mesenich
Life of this patent
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Abstract
The fuel injector valves are disposed within the fuel manifold; they have no housings and are completely immersed in liquid fuel.
Claims21
A fuel injection device for the injection of fuel into an induction tube of a combustion motor, consisting of several electromagnetic injection valves, a fuel distribution manifold, and a fuel pressure regulator, characterized by the fact that the injection valves (604) are completely surrounded by the fuel distribution manifold (601), and that the injection valves, without any valve housing, are directly built into said fuel distribution manifold (601) and are completely immersed in fuel.
A fuel injection device for the injection of fuel into an induction tube of a combustion motor, said device being a compound unit for installation which has at least one electromagnetic metering valve, several metering nozzles, several mixing devices for fuel preparation, and a fuel pressure regulator, and where the conveyance of fuel to the individual injection locations is done with the assistance of air, and where said device is characterized by the fact that the at least one electromagnetic valve features at least one valve seat (123) and at least one working pole (113), and that these valve seat and working pole units are arranged at the opposite ends of a flat tilt-armature (108) which has a fulcrum between such valve seat and such pole, and that the electromagnetic valve simultaneously allows for fuel supply to said several metering nozzles (122).
A fuel injection device for the injection of fuel into an induction tube of a combustion motor, consisting of at least one electromagnetic metering valve, at least one mixing device for fuel preparation, a fuel pressure regulator and an air pump which is mechanically driven by the combustion motor, and where the transport of fuel to the individual injection locations occurs by means of compressed air, said device being characterized by the fact that the mechanically driven air pump features a large dead space volume which comprises at least 30% of the displacement volume of the air pump.
A fuel injection device for the injection of fuel into an induction tube of a combustion motor, consisting of at least one electromagnetic metering valve, several mixing devices for fuel preparation and a fuel pressure regulator, where the transporting of the fuel is air-assisted, and where the mixing devices feature a fuel feed adapter (411) which is connected to the injection location by means of a conduit of about 0.8-1.2 mm diameter, and where the fuel is injected into the feed adapter (411) and then concentrically surrounded by air for diffusion, characterized by the fact that downstream from said adapter (411) at least one additional passage (406) for the admission of air is provided.
Dependencies are inferred from the claim text.