摘要:
An electromagnetically actuatable valve having a longitudinal valve axis, an electromagnetic circuit, a movable actuating member that cooperates with a fixed valve seat for opening and closing the valve, and an outlet opening that is configured downstream of the valve seat. The actuating member is configured in a bowl, trough, or saucer shape, having an actuating leg and a supporting leg that is configured to be substantially perpendicular to the former. The actuating leg, as a movable part of the actuating member, cooperates with an upper layer of atomization disk to form a sealing valve. The valve may be used as a fuel injector in an internal combustion engine, such as in a mixture-compressing, spark-ignition internal combustion engine.
摘要:
The fuel injector includes an orifice plate being situated downstream from a valve-seat body having a fixed valve seat, the orifice plate having at least one outlet opening. Provided directly upstream from the outlet openings is an inflow opening having an annular inflow cavity. The valve-seat body covers the inflow cavity in such a way that the downstream outlet openings of the orifice plate are covered. A boundary surface of the valve-seat body lying opposite the orifice plate is designed such that, beginning at an exit opening, the height of the inflow opening decreases continuously in a first section up to the at least one outlet opening, while the height of the inflow opening in a second, radially outer section remains largely constant. The fuel injector is particularly suitable for use in fuel injection systems of the mixture-compressing internal combustion engines having external ignition.
摘要:
A fuel injector for fuel-injection systems of internal combustion engines includes a solenoid coil, a valve needle that is in operative connection with the solenoid coil and acted upon by a restoring spring in a closing direction in order to actuate a valve-closure member which forms a sealing seat together with a valve-seat surface formed at a valve-seat member, and at least two spray-discharge orifices, which are formed in the valve-seat member. In a discharge region, the spray-discharge orifices are in connection with capillaries formed in the end face of the valve-seat member.
摘要:
A fuel injector (1) for fuel injector systems of internal combustion engines has a valve-closure member (4) which is mechanically linked to a valve needle (3) and cooperates with a valve-seat surface (6) of a valve-seat member (5) to form a sealing seat. A turbulence-producing element is provided in the valve-seat member (5), situated downstream from the sealing seat, and its center line (38) preferably forms an angle different from zero with the center line (39) of the fuel injector (1), a threaded rod (36) being pressed into the valve-seat member (5) as the turbulence-producing element.
摘要:
A fuel injection device for an internal combustion engine having a fuel injection valve which sprays the fuel in the direction of an inlet valve and includes an electric heating element for the fuel before it reaches an inlet valve. The fuel injection device has a fuel injection valve which sprays the fuel in the form of a fuel jet in the direction of the inlet valve of the internal combustion engine, the fuel jet leaving the fuel injection valve at least in part strikes an electric heating element which, according to the invention, is designed as a Peltier element. The fuel injection device according to the invention is intended, in particular, for mixture-compressing, applied-ignition internal combustion engines.
摘要:
A method for manufacturing an orifice plate that is built up in multiple layers and includes a complete axial through passage for a fluid. The orifice plate includes inlet openings, outlet openings, and at least one conduit lying between them. The layers or functional planes of the orifice plate are built up on one another by electroplating metal deposition (multilayer electroplating). Orifice plates manufactured in this manner are particularly suitable for use on injection valves in fuel injection systems, in paint nozzles, inhalers, or inkjet printers, or in freeze-drying processes, for spraying or injecting fluids such as beverages.
摘要:
In a method for manufacturing a nozzle plate, two parts of the nozzle plate are fabricated separately from one another. The fabrication of the two parts is carried out by microstructuring/lithography, electroforming and plastic molding. Advantageously, a filter structure is provided in the first part. The two parts are joined together by means of laser welding, diffusion soldering or a chemical joining process. The nozzle plate is particularly well suited for injection valves, atomization nozzles, paint spray nozzles or other spraying systems.
摘要:
An orifice plate includes a complete axial through passage for a fluid, in particular for a fuel, including inlet openings, outlet openings, and at least one conduit located between them. The inlet and outlet openings are arranged in the orifice plate so that they do not overlap at any point when projected into one plane. This offset of the outlet openings with respect to the inlet openings results in an S-shaped flow profile for the medium, onto which an atomization-promoting turbulence is thus imposed. The orifice plate is particularly suitable for use on injection valves in fuel injection systems, in paint nozzles, or for freeze-drying processes.
摘要:
A method for manufacturing an orifice plate that is built up in multiple layers and includes a complete axial through passage for a fluid. The orifice plate includes inlet openings, outlet openings, and at least one conduit lying between them. The layers or functional planes of the orifice plate are built up on one another by electroplating metal deposition (multilayer electroplating). Orifice plates manufactured in this manner are particularly suitable for use on injection valves in fuel injection systems, in paint nozzles, inhalers, or inkjet printers, or in freeze-drying processes, for spraying or injecting fluids such as beverages.
摘要:
In an injection valve, a perforated disk made from a material of relatively great hardness. The perforated disk has a tensile strength of >800N/mm.sup.2. Spray holes are punched from a downstream side of the perforated disk to an upstream side. A stamping break-out, which occurs due to the greater brittleness of the material, has no negative effects since the perforated disk is installed in the injection valve such that the direction of flow of the medium is exactly opposite to the punching direction. The injection valve is particularly suitable for fuel injection systems of mixture-compressing applied ignition internal combustion engines.