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公开(公告)号:EP4445013A1
公开(公告)日:2024-10-16
申请号:EP22835286.0
申请日:2022-12-09
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公开(公告)号:EP4341548A1
公开(公告)日:2024-03-27
申请号:EP22728393.4
申请日:2022-05-06
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公开(公告)号:EP3653867B1
公开(公告)日:2024-02-21
申请号:EP18831886.9
申请日:2018-06-25
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公开(公告)号:EP4286718A1
公开(公告)日:2023-12-06
申请号:EP22863843.3
申请日:2022-02-02
申请人: Hitachi Astemo, Ltd.
摘要: The present invention provides a fuel pump capable of preventing the occurrence of cavitation near a seat member in a valve mechanism. The fuel pump includes a plunger adapted to reciprocate, a pressurizing chamber adapted to increase and decrease its volumetric capacity through the reciprocation of the plunger, and a relief valve mechanism adapted to return a fuel to the pressurizing chamber. The relief valve mechanism includes a relief valve, and a seat member having a valve contact portion for seating the relief valve thereon. The relief valve is disposed closer to the plunger than the seat member. The seat member has an annular groove portion which forms a space communicating with the pressurizing chamber, between the annular groove portion and a second chamber (a fixing portion) surrounding the outer peripheral surface of the seat member. The space is provided at a position farther from the plunger than the valve contact portion.
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公开(公告)号:EP4217601A1
公开(公告)日:2023-08-02
申请号:EP21772708.0
申请日:2021-08-30
申请人: Robert Bosch GmbH
发明人: KORNHAAS, Rainer , WEHR, Stephan
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公开(公告)号:EP4124745A1
公开(公告)日:2023-02-01
申请号:EP22177983.8
申请日:2022-06-09
申请人: Robert Bosch GmbH
摘要: Die Erfindung betrifft eine Kraftstoff-Hochdruckpumpe (10) mit einem Auslassventil (37) und einem Druckbegrenzungsventil (22), wobei das Auslassventil (37) in einer Auslassventilbohrung (37a) des Pumpengehäuses (12) fixiert ist, wobei das Druckbegrenzungsventil (22) in einer Druckbegrenzungsventilbohrung (22a) des Pumpengehäuses (12) fixiert ist und wobei die Auslassventilbohrung (37a) und die Druckbegrenzungsventilbohrung (22a) in zueinander geometrisch parallelen Ebenen senkrecht zur Längsrichtung (LA) der Kraftstoff-Hochdruckpumpe (10) erstreckt sind.
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公开(公告)号:EP3477093B1
公开(公告)日:2022-05-04
申请号:EP17819780.2
申请日:2017-06-05
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公开(公告)号:EP3473844B1
公开(公告)日:2021-12-08
申请号:EP18200174.3
申请日:2018-10-12
发明人: MACLANE, Stephen J. , JONES, David
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