High-pressure fuel pump for a fuel system for an internal combustion engine

The invention relates to a high-pressure fuel pump (28) for a fuel system (10) for an internal combustion engine, comprising a pressure limiting valve (42) hydraulically arranged between an outlet (36) and an area that is upstream of the outlet (36). The pressure limiting valve (42) has a spring-loa...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: KLEINDL MICHAEL, TEIKE GERD
Format: Patent
Sprache:chi ; eng
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Zusammenfassung:The invention relates to a high-pressure fuel pump (28) for a fuel system (10) for an internal combustion engine, comprising a pressure limiting valve (42) hydraulically arranged between an outlet (36) and an area that is upstream of the outlet (36). The pressure limiting valve (42) has a spring-loaded closing element (58), which is radially held in place by a closing body (62), wherein the closing body (62) has a concave receiving portion (66), in which the locking element (58) is partially accommodated. According to the invention, an opening angle (beta) of a radially outer first area (74) of the receiving portion (66) of the closing body (62) is smaller than an opening angle (alpha) of an radially inner second area (76) of the receiving portion (66) of the closing body (62), wherein both areas (74, 76) are arranged radially outside of a contact region (78) between closing element (58) and closing body (62). 本发明涉及种燃料高压泵(28),用于内燃机的燃料系统(10),具有液压地布置在出口(36)和位于该出口(36)上游的区域之间的限压阀(42),该限压阀具有受弹簧加载的关闭元件(58),该关闭元件被关闭