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1. 发明申请

US20090110575A1 High-Pressure Fuel Supply Pump and the Manufacturing Method 有权
标题翻译：高压燃油泵及其制造方法
公开(公告)号：US20090110575A1
公开(公告)日：2009-04-30
申请号：US12261753
申请日：2008-10-30
申请人： Akihiro MUNAKATA , Hideki Machimura , Kazutaka Hosokawa
发明人： Akihiro MUNAKATA , Hideki Machimura , Kazutaka Hosokawa
IPC分类号： F04B19/00
CPC分类号： F02M59/02 , B23K11/16 , B23K11/26 , B23K20/023 , B23K33/006 , B23K33/008 , B23K2101/04 , B23K2103/02 , F02M59/48 , F02M59/485 , F02M2200/8084 , F04B1/0404 , F04B53/168
摘要： An object of this invention is to provide such a welded structure of and welding method for two metallic parts fitted together at a tubular section in a high-pressure fuel supply pump, that enables rapid joining of both metallic parts by staking (press-fitting included), screw fastening, and/or laser welding, offers high welding strength and sufficient fluid sealability, and keeps the metallic materials free from thermal changes in composition. Solution: While an electric current is supplied to any one of the welding connection surfaces formed between a pump housing and cylinder in a high-pressure fuel supply pump, between the pump housing and an installation flange, between the pump housing and an intake or discharge joint, between the pump housing and a pulsation-absorbing damper cover, between the pump housing and a relief valve mechanism, and between the pump housing and an electromagnetically driven intake valve mechanism, the particular two sections are pressed against each other to generate, along the connection surface, a plastic flow not causing melting or fusion due to heat, and form a diffusion-weld region at the connection surface by using the plastic flow and the application of the pressure.
摘要翻译：本发明的目的是提供一种用于两个金属部件的焊接结构和焊接方法，该两个金属部件在高压燃料供给泵中的管状部分处装配在一起，能够通过铆接快速接合两个金属部件（包括压配件），螺丝紧固和/或激光焊接，提供高的焊接强度和足够的流体密封性，并且使金属材料不受组成的热变化的影响。解决方案：在泵壳体和安装法兰之间，在泵壳体和进气或排出口之间，向形成在泵壳体和缸体之间的高压燃料供给泵中的任一个焊接连接表面提供电流在泵壳体和减压阀机构之间以及在泵壳体和电磁驱动的进气阀机构之间的泵壳体和脉动吸收阻尼器盖之间的连接，特定的两个部分被压靠在一起以产生沿着连接表面，不会由于热而引起熔融或熔化的塑性流动，并且通过使用塑性流动和施加压力在连接表面处形成扩散焊接区域。

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