Non-return valve for a pump
AssigneeSiemens Aktiengesellschaft
InventorMarc Hohmann
Life of this patent
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Abstract
The invention relates to a non-return valve for a pump, in particular a fuel pump, with a housing (2) in which a valve seat (3) is embodied, a closing body (4) and a cage element. The closing body (4) is arranged within the cage element, whereby the cage body is embodied in two pieces. The cage element comprises a guide element (5) and a stop element (6), such that a functional separation of the regions of the cage element with various functions is possible.
Claims18
A non-return valve for a pump, comprising a receptacle in which a valve seat is implemented, a closing body and a cage element in which the closing body is disposed, whereby the cage element is bipartite, comprising a guide element and a stop element and the guide element is made from a material having a lower modulus of elasticity than a material of the stop element.
The non-return valve according to claim 9, wherein recesses for ensuring pressure compensation are implemented in the grooves.
A method for delivering fuel for a common rail injection system comprising the steps of:
- providing a high-pressure pump for delivering fuel for a common rail injection system;
- providing a non-return valve for the high pressure pump, wherein the non-return valve comprises a receptacle in which a valve seat is implemented, a closing body and a cage element in which the closing body is disposed, whereby the cage element is bipartite, comprising a guide element and a stop element and the guide element is made from a material having a lower modulus of elasticity than a material of the stop element.
Dependencies are inferred from the claim text.