High-pressure injector with reduced leakage
OwnerFriedrich Boeckinginventor
Life of this patent
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Abstract
The invention relates to an injector for an injection system for injecting highly pressurized fuel into the combustion chambers of internal combustion engines. An inlet from the high-pressure accumulation chamber feeds into a control chamber that can be connected to the nozzle inlet of the injection nozzle by means of a sealing seat that can be opened. In order to close the leakage oil outlet when the inlet line from the high-pressure accumulation chamber is opened, a sealing surface covers outlet-side control edges on the valve housing.
Claims9
In an injector for an injection system for injecting highly pressurized fuel from a high-pressure accumulation chamber into the combustion chamber of internal combustion engines, in which a supply line (9) from the high-pressure accumulation chamber feeds into a control chamber (11) that can be connected to a nozzle inlet (10) to the injection nozzle by means of a sealing seat (12, 25) that can be opened and closed, the improvement wherein, for the purpose of sealing off leakage oil outlets (16) when the supply line (9) from the high-pressure accumulation chamber is opened, sealing surfaces (13, 24) overlap outlet side control edges (32) on the valve housing (2).
Dependencies are inferred from the claim text.