PRESSURE MODEL BASED COORDINATED CONTROL OF VGT AND DUAL-LOOP EGR IN A DIESEL ENGINE AIR-PATH SYSTEM

被引：10

作者：

Kim, S. ^{[1
]}

Choi, S. ^{[1
]}

Jin, H. ^{[2
]}

机构：

[1] Korea Adv Inst Sci & Technol, Sch Mech Aerosp & Syst Engn, Daejeon 34141, South Korea

[2] Hyundai Autron, Engine Control Team, 344 Pangyo Ro, Songnam 13493, Gyeonggi, South Korea

来源：

INTERNATIONAL JOURNAL OF AUTOMOTIVE TECHNOLOGY | 2016年 / 17卷 / 02期

基金：

新加坡国家研究基金会;

关键词：

Diesel engine; Air-path control; Dual-loop EGR; Control-oriented model; VGT;

D O I：

10.1007/s12239-016-0019-8

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

This paper describes a pressure-model-based coordinated control method of a variable geometry turbine (VGT) and dual-loop exhaust gas recirculation (EGR) in a diesel engine air-path system. Conventionally, air fraction or burnt gas fraction states are controlled for the control of dual-loop EGR systems, but fraction control is not practical since sensors for fractions are not available on production engines. In fact, there is still great controversy over how best to select control outputs for dual-loop EGR systems. In this paper, pressure and mass flow states are chosen as control outputs without fraction states considering the availability and reliability of sensors. A coordinated controller based on the simple control-oriented model is designed with practical aspects, which is applicable for simultaneous operations of high pressure (HP) EGR, low pressure (LP) EGR, and VGT. In addition, the controller adopts the method of input-output linearization using back-stepping to solve the chronic problems of conventional pressure-based controllers such as coupling effects between operations of HP EGR, and VGT. The control performance is verified by simulation based on the proven GT-POWER model of a heavy-duty 6000cc diesel engine air-path.

引用

页码：193 / 203

页数：11

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