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AssigneeRobert Bosch GmbH
InventorsBernd Winkler, Andreas Ploeckinger, Johannes Gerstmayr, Manfred Nader, Christian Zehetner
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The invention relates to an electromagnetically actuatable gas valve for metering a gaseous fuel into a suction tract of a motor, in particular a gas or diesel gas motor, comprising a valve seat (1) which is designed as a flat seat and which has multiple annular webs (3) that are arranged in a concentric manner and are connected via at least one radially running web (4) in order to delimit circular or semicircular through-flow openings (2). The electromagnetically actuatable gas valve further comprises a movable valve plate (5) which sealingly interacts with the valve seat (1) and which has multiple annular sealing webs (6) that are arranged in a concentric manner and can be brought into an overlapping arrangement with the circular or semicircular through-flow openings (2) of the valve seat (1). According to the invention, the rigidity of the valve seat (1) and/or the valve plate (5) is substantially constant in the radial direction, the rigidity of the valve seat (1) being greater than the rigidity of the valve plate (5). The invention further relates to a method for increasing the seal of an electromagnetically actuatable gas valve.
An electromagnetically actuatable gas valve for metering a gaseous fuel into a suction tract of an engine, the gas valve comprising a valve seat (1), which is designed as a flat seat and which, to delimit circular or partially circular through-flow openings (2), has a plurality of concentrically arranged annular webs (3), which are connected by at least one radially extending web (4), further comprising a movable valve disk (5), which interacts sealingly with the valve seat (1) and which has a plurality of concentrically arranged annular sealing webs (6), which can be brought into overlap with the circular or partially circular through-flow openings (2) of the valve seat (1), characterized in that a stiffness of at least one of the valve seat (1) and the valve disk (5) is substantially constant in a radial direction, wherein the stiffness of the valve seat (1) is greater than the stiffness of the valve disk (5).
A method for increasing the seal of an electromagnetically actuatable gas valve, comprising a valve seat (1), which is designed as a flat seat and which, to delimit circular or partially circular through-flow openings (2), has a plurality of concentrically arranged annular webs (3), which are connected by at least one radially extending web (4), further comprising a movable valve disk (5), which interacts sealingly with the valve seat (1) and which has a plurality of concentrically arranged annular sealing webs (6), which can be brought into overlap with the circular or partially circular through-flow openings (2) of the valve seat (1), characterized in that the stiffness of at least one of the valve seat (1) and the valve disk (5) is chosen to be substantially constant in the radial direction, wherein the stiffness of the valve seat (1) is chosen to be greater than the stiffness of the valve disk (5).
Dependencies are inferred from the claim text.