A study on the design and application of optimized solenoid for diesel unit injector

被引：6

作者：

Hwang, JW ^{[1
]}

Kal, HJ ^{[1
]}

Park, JK ^{[1
]}

Martychenko, AA ^{[1
]}

Chae, JO ^{[1
]}

机构：

[1] Inha Univ, Dept Mech Engn, Nam Gu, Inchon 402751, South Korea

来源：

KSME INTERNATIONAL JOURNAL | 1999年 / 13卷 / 05期

关键词：

unit injector; rising time; waiting time; optimal inductance;

D O I：

10.1007/BF02939329

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

With the Environmental Protection Agency (EPA) regulating the amount of NOx, Particulate, HC and CO at all driving conditions, emission standards for diesel engines are becoming more stringent than ever. To meet future emission regulations, researchers have proposed two solutions based on injection control, the common-rail type injection system, and the unit injection system. Most researchers agree that the electronically controlled unit injector, which realizes high injection pressure and precise control of SOI(Start Of Injection) and injection quantity, has an advantage in meeting future emission regulations. In order to control the start and end of injection, each unit injector contains a time-controlled high speed solenoid valve. Thus, the fuel injection quantity is determined by the time interval between closing and opening of the solenoid valve. This study introduces a method for the design of the solenoid which is installed in the unit injector. It is shown that there are certain significant parameters to be optimized to improve solenoid performance: inductance, stroke, input voltage, coil resistance, load and switching time.

引用

页码：414 / 420

页数：7