کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
13446459 | 1843790 | 2019 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Retard to the Limit: Closed-Loop COVIMEP Control for Aggressive Exhaust Heating
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مکانیک محاسباتی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Retard to the Limit: Closed-Loop COVIMEP Control for Aggressive Exhaust Heating Retard to the Limit: Closed-Loop COVIMEP Control for Aggressive Exhaust Heating](/preview/png/13446459.png)
چکیده انگلیسی
During cold-starts, diesel engines equipped with aftertreatment systems typically use combustion phasing retard to increase exhaust gas enthalpy to hasten catalyst light-off, resulting in lower tailpipe emissions. Although later combustion phasing can help achieve faster catalyst light-off, combustion variability increases which can physically manifest as vibration and erratic engine behavior. To achieve faster catalyst light-off while remaining within combustion variability constraints, the premise of closed-loop control of Coefficient of Variation of IMEP (COVIMEP) to a target value using feedback from an in-cylinder pressure sensor has been explored. COVIMEP controllers have been designed using a model and validated via simulation and experiment at steady-state. The simulation and experimental results indicate that closed-loop COVIMEP control is a viable technique for retarding combustion phasing to the combustion variability limit at steady-state conditions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: IFAC-PapersOnLine - Volume 52, Issue 5, 2019, Pages 624-629
Journal: IFAC-PapersOnLine - Volume 52, Issue 5, 2019, Pages 624-629
نویسندگان
Mitchell Bieniek, Anna Stefanopoulou, John Hoard, Bryan Maldonado, Brien Fulton, Michiel Van Nieuwstadt,