{"title":"Auto-Ignited Combustion Control in an Engine Equipped with Multiple\n Boosting Devices","authors":"Jun-Mo Kang","doi":"10.4271/03-17-06-0043","DOIUrl":null,"url":null,"abstract":"The combustion timing of auto-ignited combustion is determined by composition,\n temperature, and pressure of cylinder charge. Thus, for a successful\n auto-ignition, those key variables must be controlled within tight target\n ranges, which is challenging due to (i) nature of coupling between those\n variables, and (ii) complexity of managing multiple actuators in the engine. In\n this article, a control strategy that manages multiple actuators of a boosted\n homogeneous charge compression ignition (HCCI) engine is developed to maintain\n robust auto-ignited combustion. The HCCI engine being considered is equipped\n with multiple boosting devices including a supercharger and a turbocharger in\n addition to conventional actuators and sensors. Since each boosting device has\n its own pros and cons, harmonizing those boosting devices is crucial for\n successful transient operation. To address the multi-variable transient control\n problem, speed-gradient control methodology is applied to minimize coupling\n between boosting devices. Simulation results show that the control strategy\n overcomes turbo lag by utilizing the supercharger during transient. The\n controller developed is still appliable to manage multiple boosting devices with\n conventional engines as well as HCCI engine.","PeriodicalId":47948,"journal":{"name":"SAE International Journal of Engines","volume":null,"pages":null},"PeriodicalIF":1.1000,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"SAE International Journal of Engines","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.4271/03-17-06-0043","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"TRANSPORTATION SCIENCE & TECHNOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
The combustion timing of auto-ignited combustion is determined by composition,
temperature, and pressure of cylinder charge. Thus, for a successful
auto-ignition, those key variables must be controlled within tight target
ranges, which is challenging due to (i) nature of coupling between those
variables, and (ii) complexity of managing multiple actuators in the engine. In
this article, a control strategy that manages multiple actuators of a boosted
homogeneous charge compression ignition (HCCI) engine is developed to maintain
robust auto-ignited combustion. The HCCI engine being considered is equipped
with multiple boosting devices including a supercharger and a turbocharger in
addition to conventional actuators and sensors. Since each boosting device has
its own pros and cons, harmonizing those boosting devices is crucial for
successful transient operation. To address the multi-variable transient control
problem, speed-gradient control methodology is applied to minimize coupling
between boosting devices. Simulation results show that the control strategy
overcomes turbo lag by utilizing the supercharger during transient. The
controller developed is still appliable to manage multiple boosting devices with
conventional engines as well as HCCI engine.