公开(公告)号：US09856844B2

公开(公告)日：2018-01-02

申请号：US15139542

申请日：2016-04-27

Applicant: MAGNETI MARELLI S.p.A.

Inventor： Michele Petrone ,  Enrico Vezzani ,  Massimo Mattioli

IPC: F02M59/44 ,  F02M59/36 ,  F02M63/02 ,  F02M59/06 ,  F02M59/10 ,  F02M59/02 ,  F02M59/20 ,  F02M59/46 ,  F16K1/32 ,  F16K31/06

CPC classification number: F02M59/442 ,  F02M59/02 ,  F02M59/06 ,  F02M59/102 ,  F02M59/20 ,  F02M59/367 ,  F02M59/462 ,  F02M63/0265 ,  F02M2200/16 ,  F02M2200/26 ,  F02M2200/8053 ,  F02M2200/8061 ,  F02M2200/8076 ,  F16K1/32 ,  F16K31/06

Abstract: A fuel pump for a direct injection system having: a pumping chamber; a piston, which is mounted in a sliding manner on the inside of the pumping chamber; an intake channel, which originates from a wall of the pumping chamber and has a housing portion; an intake valve, which is inserted into the housing portion of the intake channel; and a locking ring nut with an annular shape, which is threaded and is screwed into the housing portion of the intake channel so as to strike against the intake valve; the housing portion has an annular abutment, which reduces the diameter of the housing portion and against which the intake valve strikes; the locking ring nut is screwed into the housing portion with a tightening force that is sufficient to determine a plastic deformation of the annular abutment against the intake valve.

公开(公告)号：US09322374B2

公开(公告)日：2016-04-26

申请号：US14255278

申请日：2014-04-17

Applicant: Magneti Marelli S.p.A.

Inventor： Stefano Petrecchia ,  Massimo Lolli ,  Massimo Mattioli ,  Enrico Vezzani ,  Daniele De Vita

IPC: F02M51/00 ,  F02M61/20 ,  F02M51/06 ,  B05B15/00 ,  F02M1/14 ,  F16K15/16 ,  F02M61/18

CPC classification number: F02M61/20 ,  B05B15/40 ,  F02M1/14 ,  F02M51/061 ,  F02M51/0614 ,  F02M51/0621 ,  F02M51/0671 ,  F02M61/188 ,  F02M2200/26 ,  F02M2200/304 ,  F16K15/16 ,  Y10S239/90

Abstract: The present invention relates to a fuel injector. The fuel injector is provided with an injection nozzle, an injection valve, and an electromagnetic actuator. The injection valve has a movable needle to adjust the flow of fuel through the injection nozzle. The electromagnetic actuator is adapted to move the needle between a closing position and an opening position of the injection valve and is provided with a movable plunger which is mechanically connected to the needle and has at least one feeding through hole for the passage of fuel towards the injection nozzle. The plunger is provided with a hydraulic type braking device, which is coupled to the feeding hole and hydraulically dissipates kinetic energy to slow down the opening stroke of the needle when the needle moves towards the opening position of the injection valve.

Abstract translation: 燃料喷射器技术领域本发明涉及燃料喷射器。 燃料喷射器设置有喷射喷嘴，喷射阀和电磁致动器。 喷射阀具有可移动的针以调节通过喷嘴的燃料流。 电磁致动器适于在关闭位置和注射阀的打开位置之间移动针，并且设置有可移动的柱塞，机械地连接到针并且具有至少一个进给通孔，用于使燃料朝向 喷嘴。 柱塞设置有液压式制动装置，其连接到进给孔，并且当针朝向喷射阀的打开位置移动时，液压地驱动动能以减慢针的打开行程。

公开(公告)号：US20140312147A1

公开(公告)日：2014-10-23

申请号：US14255278

申请日：2014-04-17

Applicant: Magneti Marelli S.p.A.

Inventor： Stefano Petrecchia ,  Massimo Lolli ,  Massimo Mattioli ,  Enrico Vezzani ,  Daniele De Vita

IPC: F02M61/20 ,  F02M51/06

CPC classification number: F02M61/20 ,  B05B15/40 ,  F02M1/14 ,  F02M51/061 ,  F02M51/0614 ,  F02M51/0621 ,  F02M51/0671 ,  F02M61/188 ,  F02M2200/26 ,  F02M2200/304 ,  F16K15/16 ,  Y10S239/90

Abstract: The present invention relates to a fuel injector. The fuel injector is provided with an injection nozzle, an injection valve, and an electromagnetic actuator. The injection valve has a movable needle to adjust the flow of fuel through the injection nozzle. The electromagnetic actuator is adapted to move the needle between a closing position and an opening position of the injection valve and is provided with a movable plunger which is mechanically connected to the needle and has at least one feeding through hole for the passage of fuel towards the injection nozzle. The plunger is provided with a hydraulic type braking device, which is coupled to the feeding hole and hydraulically dissipates kinetic energy to slow down the opening stroke of the needle when the needle moves towards the opening position of the injection valve.

Abstract translation: 燃料喷射器技术领域本发明涉及燃料喷射器。 燃料喷射器设置有喷射喷嘴，喷射阀和电磁致动器。 喷射阀具有可移动的针以调节通过喷嘴的燃料流。 电磁致动器适于在关闭位置和注射阀的打开位置之间移动针，并且设置有可移动的柱塞，机械地连接到针并且具有至少一个进给通孔，用于使燃料朝向 喷嘴。 柱塞设置有液压式制动装置，其连接到进给孔，并且当针朝向喷射阀的打开位置移动时，液压地驱动动能以减慢针的打开行程。