公开(公告)号：EP2171256A1

公开(公告)日：2010-04-07

申请号：EP08802914.5

申请日：2008-06-17

Applicant: Robert Bosch GmbH

Inventor： ZEISS, Bernhard ,  CHRIST, Wilhelm ,  KUEBLER, Ralf ,  HOCH, Alfred ,  HERRMANN, Matthias ,  ULRICH, Lars

IPC: F02M61/16 ,  F02M61/18 ,  B21K1/24 ,  C21D1/10

CPC classification number: F02M61/168 ,  B21K1/24 ,  C21D1/10 ,  C21D1/18 ,  C21D1/25 ,  F02M61/18 ,  F02M2200/02 ,  F02M2200/9061 ,  Y02P10/253 ,  Y10T29/49405 ,  Y10T29/49409

Abstract: The invention relates to a method for producing an injection valve for liquids, preferably an injection valve for injecting fuel into a combustion chamber of an internal combustion engine, which injection valve has a valve body (1), with a valve seat (6) which is formed therein, and a valve needle (5) which interacts with the valve seat (6) in order to open and close at least one injection opening (7). The injection valve is produced by means of the following method steps: producing the valve body (1) from steel, hardening the valve body (1), annealing a partial region of the valve body (1) at an annealing temperature T2. The device for carrying out the method according to the invention comprises an inductive annealing generator which generates a suitable alternating current for operating a coil, in the magnetic field of which coil the valve body can be heated for annealing (figure 2).

公开(公告)号：EP2171256B1

公开(公告)日：2011-05-11

申请号：EP08802914.5

申请日：2008-06-17

Applicant: Robert Bosch GmbH

Inventor： ZEISS, Bernhard ,  CHRIST, Wilhelm ,  KUEBLER, Ralf ,  HOCH, Alfred ,  HERRMANN, Matthias ,  ULRICH, Lars

IPC: F02M61/16 ,  F02M61/18 ,  B21K1/24 ,  C21D1/10

CPC classification number: F02M61/168 ,  B21K1/24 ,  C21D1/10 ,  C21D1/18 ,  C21D1/25 ,  F02M61/18 ,  F02M2200/02 ,  F02M2200/9061 ,  Y02P10/253 ,  Y10T29/49405 ,  Y10T29/49409

Abstract: The invention relates to a method for producing an injection valve for liquids, preferably an injection valve for injecting fuel into a combustion chamber of an internal combustion engine, which injection valve has a valve body (1), with a valve seat (6) which is formed therein, and a valve needle (5) which interacts with the valve seat (6) in order to open and close at least one injection opening (7). The injection valve is produced by means of the following method steps: producing the valve body (1) from steel, hardening the valve body (1), annealing a partial region of the valve body (1) at an annealing temperature T2. The device for carrying out the method according to the invention comprises an inductive annealing generator which generates a suitable alternating current for operating a coil, in the magnetic field of which coil the valve body can be heated for annealing (figure 2).

公开(公告)号：EP3191706B1

公开(公告)日：2018-06-13

申请号：EP15744224.5

申请日：2015-07-30

Applicant: Robert Bosch GmbH

Inventor： CHRIST, Wilhelm ,  ULRICH, Lars ,  HEKEL, Maike

IPC: F02M61/16 ,  F02M61/18 ,  F02M61/10

CPC classification number: F02M61/10 ,  F02M61/166 ,  F02M61/168 ,  F02M61/18 ,  F02M2200/46 ,  F02M2200/90 ,  F02M2200/9007 ,  F02M2200/9092

公开(公告)号：EP3191706A1

公开(公告)日：2017-07-19

申请号：EP15744224.5

申请日：2015-07-30

Applicant: Robert Bosch GmbH

Inventor： CHRIST, Wilhelm ,  ULRICH, Lars ,  HEKEL, Maike

IPC: F02M61/16 ,  F02M61/18

CPC classification number: F02M61/10 ,  F02M61/166 ,  F02M61/168 ,  F02M61/18 ,  F02M2200/46 ,  F02M2200/90 ,  F02M2200/9007 ,  F02M2200/9092

Abstract: The invention relates to a nozzle needle (10) for a fuel injection device (100), in particular a fuel injector, comprising a nozzle needle tip (12) which is connected to a nozzle needle shaft (11). The nozzle needle tip (12) and the nozzle needle shaft (11) consist of different materials. According to the invention, the nozzle needle shaft (11) has a receiving area (20) formed by a blind bore (21) for the nozzle needle tip (12). The base (22) of the receiving area (20) forms an axial stop for the nozzle needle tip (12), and the nozzle needle tip (12) has an at least approximately constant diameter (d) within the receiving area (20), said diameter simultaneously forming the largest diameter of the nozzle needle tip (12).

Abstract translation: 用于燃料喷射装置（100）的喷嘴针（10）技术领域本发明涉及一种用于燃料喷射装置（100）特别是燃料喷射器的喷嘴针（10），其包括连接到喷嘴针轴（11）的喷嘴针尖（12）。 喷嘴针尖（12）和喷嘴针轴（11）由不同的材料组成。 根据本发明，喷嘴针阀轴（11）具有由用于喷嘴针尖（12）的盲孔（21）形成的接收区域（20）。 容纳区域20的基部22形成用于喷嘴针尖12的轴向止动部，并且喷嘴针尖12在容纳区域20内具有至少近似恒定的直径d， ，所述直径同时形成喷嘴针尖（12）的最大直径。