EP1546545B1 PUMPE-DÜSE-EINHEIT UND VERFAHREN ZUR EINSTELLUNG DER HÄRTE VON ANLAGEBEREICHEN EINES STEUERVENTILS
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基本信息:
- 专利标题: PUMPE-DÜSE-EINHEIT UND VERFAHREN ZUR EINSTELLUNG DER HÄRTE VON ANLAGEBEREICHEN EINES STEUERVENTILS
- 专利标题(英):Pump/nozzle unit and method for setting the hardness of contact areas of a control valve
- 专利标题(中):PUMPE-DÜSE-EINHEIT UND VERFAHREN ZUR EINSTELLUNG DERHÄRTEVON ANLAGEBEREICHEN EINES STEUERVENTILS
- 申请号:EP03750345.5 申请日:2003-09-12
- 公开(公告)号:EP1546545B1 公开(公告)日:2007-06-13
- 发明人: KRONBERGER, Maximilian , HAMANN, Christoph
- 申请人: Volkswagen Mechatronic GmbH & Co. KG
- 申请人地址: Auer Strasse 19 09366 Stollberg DE
- 专利权人: Volkswagen Mechatronic GmbH & Co. KG
- 当前专利权人: Volkswagen Mechatronic GmbH & Co. KG
- 当前专利权人地址: Auer Strasse 19 09366 Stollberg DE
- 代理机构: Beck, Josef
- 优先权: DE10242376 20020912
- 国际公布: WO2004027252 20040401
- 主分类号: F02M59/46
- IPC分类号: F02M59/46 ; F02M57/02
摘要:
The invention relates to a pump/nozzle unit for delivering fuel (10) into a combustion chamber (12) of an internal combustion engine, comprising a fuel pump (14-22), which can be controlled and/or regulated and which has a control valve (22) with a valve needle (48) that is displaced by a piezo actuator (76). The comparatively short travel of the piezo actuator (76) is increased by a mechanical multiplication device (56, 58) to the extent necessary for displacing the valve needle (48). In order to avoid jeopardizing the pressure resistance of the control valve housing while yet providing the comparatively wear-resistant contact areas (80, 82) coming into contact with the mechanical multiplication device (56, 58), the invention provides that the control valve housing is made of a material having a comparatively lower basic hardness, for example, Ovako 677, and the contact areas (80, 82) of the control valve (22) are subsequently hardened by laser.
摘要(中):
本发明涉及一种用于将燃料(10)输送到内燃机的燃烧室(12)中的泵/喷嘴单元,其包括可被控制和/或调节的燃料泵(14-22) 控制阀(22)具有通过压电致动器(76)移位的阀针(48)。 压电致动器(76)的相对较短的行程通过机械倍增装置(56,58)增加到移位阀针(48)所需的程度。 为了避免损害控制阀壳体的耐压性,同时又提供与机械乘法装置(56,58)接触的相对耐磨的接触区域(80,82),本发明规定,控制阀壳体 由具有相对较低基础硬度的材料制成,例如Ovako 677,并且控制阀(22)的接触区域(80,82)随后通过激光硬化。
公开/授权文献:
IPC结构图谱:
F | 机械工程;照明;加热;武器;爆破 |
--F02 | 燃烧发动机;热气或燃烧生成物的发动机装置 |
----F02M | 一般燃烧发动机可燃混合物的供给或其组成部分 |
------F02M59/00 | 专门适用于燃料喷射且不包含在组F02M39/00至F02M57/00中的泵 |
--------F02M59/20 | .按量或定时改变燃料输送 |
----------F02M59/46 | ..阀 |