公开(公告)号：KR1020040026968A

公开(公告)日：2004-04-01

申请号：KR1020020058634

申请日：2002-09-27

Applicant: 현대자동차주식회사

Inventor： 두재균

IPC: F02M25/07

CPC classification number: Y02T10/121

Abstract: PURPOSE: An EGR valve using shape memory alloy is provided to accurately control the feedback quantity of EGR gas corresponding to operational conditions of an engine. CONSTITUTION: A valve housing(1) has an inside divided into a driving chamber(2) and a valve chamber(3), and has an inlet(4) and an outlet(5) on one side and a bottom surface of the valve chamber. A negative plate(6) and a positive plate(7) are formed at upper and lower parts of the driving chamber. A moving spring(8) is made of a shape memory alloy, wherein an upper end and a lower end of the moving spring are combined with the negative plate and the positive plate respectively. The moving spring contracts and expands according to the current quantity supplied through the negative plate and the positive plate. An insulating plate(9) is combined with a lower part of the negative plate. A valve member(20) has a valve body(22) for selectively opening and closing the outlet, and a combination part(23) to be combined with a bottom surface of the insulating plate so that the valve member opens and closes the outlet according to the contraction degree of the moving spring.

Abstract translation: 目的：提供一种使用形状记忆合金的EGR阀，以精确控制与发动机工作条件相对应的EGR气体的反馈量。 构成：阀壳体（1）具有分成驱动室（2）和阀室（3）的内部，并且在阀的一侧和底表面上具有入口（4）和出口（5） 室。 在驱动室的上部和下部形成有负极板（6）和正极板（7）。 移动弹簧（8）由形状记忆合金制成，其中移动弹簧的上端和下端分别与负极板和正极板组合。 移动弹簧根据通过负极板和正极板供应的电流量进行收缩和膨胀。 绝缘板（9）与负极板的下部组合。 阀构件（20）具有用于选择性地打开和关闭出口的阀体（22）和与绝缘板的底表面组合的组合部分（23），使得阀构件按照 到移动弹簧的收缩度。

公开(公告)号：KR1020040021979A

公开(公告)日：2004-03-11

申请号：KR1020020053782

申请日：2002-09-06

Applicant: 현대자동차주식회사

Inventor： 두재균

IPC: F02B27/02

CPC classification number: Y02T10/146

Abstract: PURPOSE: A variable induction system of an engine is provided to appropriately change an intake state of an engine according to a running speed and a load of the engine without a valve equipment. CONSTITUTION: A variable induction system is formed of an SMA(Shape Memory Alloy) actuator(1) replacing a part of an intake pipe of an engine, and a control unit controlling a current supplied to the SMA actuator according to a load and an RPM of the engine. The SMA actuator is formed of a shape memory alloy formed in helical shape, and extracting and contracting in a longitudinal direction, and a bellows pipe having the shape memory alloy inside for extracting and contracting according to the expansion and contraction of the shape memory alloy in the longitudinal direction. The control unit includes an ECU(Electronic Control Unit,7) of the engine, and a current amplifier(9) supplying a current to the SMA actuator.

Abstract translation: 目的：提供发动机的可变感应系统，以便在没有阀门设备的情况下根据发动机的运行速度和负载适当地改变发动机的进气状态。 构成：可变感应系统由SMA（形状记忆合金）致动器（1）形成，代替发动机的进气管的一部分，以及控制单元，其根据负载和RPM控制供应给SMA致动器的电流 的发动机。 SMA致动器由形状记录合金形成，形状为沿长度方向提取和收缩的形状记忆合金，并且具有内部形状记忆合金的波纹管，根据形状记忆合金的膨胀和收缩提取和收缩 纵向。 控制单元包括发动机的ECU（电子控制单元）7和向SMA致动器提供电流的电流放大器（9）。