公开(公告)号：KR101340888B1

公开(公告)日：2013-12-13

申请号：KR1020120120911

申请日：2012-10-30

Applicant: 숭실대학교산학협력단

Inventor： 이진욱 ,  권지원 ,  이중협 ,  정명철 ,  조인수

IPC: F02M51/06 ,  F02M61/10 ,  F02M61/16

Abstract: A direct drive piezo injector is disclosed. The disclosed direct drive piezo injector having a guide part in an inside comprises: a body having a spraying part for spraying a fuel to a combustor chamber in a lower part of the guide part; a piezo stack arranged inside the body along an axis direction of the body; a pressure controlling part formed in a lower part of the piezo stack; a niddle, which is arranged in a lower part of the pressure controlling part, for opening and closing the spraying part by being moved up and down by a pressure of the pressure controlling part; an accumulator, which is formed between the piezo stack and the guide part, for storing a fuel provided from an outside; and a fuel inflow path, which is connected to the accumulator, and which is formed by penetrating the body and the needle. According to the present invention, a time and an amount of spraying a fuel, which is sprayed from the injector, can be controlled more minutely by controlling the fuel, which is provided for the injector, by using a movement of the needle.

Abstract translation: 公开了一种直接驱动压电喷射器。 所公开的具有引导部分在内部的直接驱动压电喷射器包括：主体，其具有用于将燃料喷射到引导部分的下部中的燃烧室的喷射部分; 压电堆叠，其沿着所述主体的轴线方向布置在所述主体内; 形成在所述压电叠层的下部的压力控制部; 其设置在压力控制部的下部，用于通过压力控制部的压力上下移动来打开和关闭喷射部; 蓄压器，其形成在所述压电叠层和所述引导部之间，用于存储从外部提供的燃料; 以及燃料流入路径，其连接到蓄能器，并且通过穿透主体和针而形成。 根据本发明，通过使用针的移动来控制对喷射器提供的燃料，可以更精细地控制喷射从喷射器喷射的燃料的时间和喷射量。