Yıl 2020, Cilt 4 , Sayı 1, Sayfalar 10 - 22 2020-03-31

Utilizing Exhaust Valve Opening Modulation for Fast Warm-up of Exhaust After-treatment Systems on Highway Diesel Vehicles

Hasan Üstün BAŞARAN [1]


Current on-road vehicles are generally outfitted with exhaust after-treatment (EAT) systems to meet the stringent emission regulations. At cold start and low-loaded operations, those systems need to be warmed up above a threshold temperature (generally 250oC) for effective performance. High exhaust temperatures and high exhaust flow rates are required to accelerate the EAT warm up which are mostly not available at low-loaded diesel vehicle operations. Therefore, the objective of this work is to improve EAT warm up at low loads through utilizing exhaust valve opening (EVO) modulation which allows both elevated exhaust temperatures and exhaust flow rates. A 1-D engine simulation program is used to model the system which is set to operate at 1200 RPM engine speed and at 2.5 bar brake mean effective pressure (BMEP) engine load. Exhaust temperature can be increased above 250oC via either early or late EVO timings. Reduced expansion work in advanced EVO timings and increased pumping loss in retarded EVO timings require higher fuel consumption (up to 15 % and 20 %, respectively) to keep engine load constant. Those high fuel penalties reduce engine air-to-fuel ratio and rise exhaust temperature more than 55oC. Exhaust mass flow rate is improved up to 9 % in the system as well. The method increases exhaust gas energy up to 40 % and rises heat transfer rate to the EAT system up to 140 % compared to nominal condition. The technique is highly effective at heating up EAT systems, however, it also causes high fuel inefficiency which needs to be considered.
Exhaust After-treatment Warm-up, Thermal Management, Exhaust Gas Temperature, Exhaust Flow Rate, Exhaust Valve Opening Modulation
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Birincil Dil en
Konular Mühendislik, Makine, Mühendislik
Bölüm Volumes
Yazarlar

Orcid: 0000-0002-1491-0465
Yazar: Hasan Üstün BAŞARAN (Sorumlu Yazar)
Kurum: İZMİR KATİP ÇELEBİ ÜNİVERSİTESİ, GEMİ İNŞAATI VE DENİZCİLİK FAKÜLTESİ
Ülke: Turkey


Destekleyen Kurum İzmir Katip Çelebi Üniversitesi BAP Koordinatörlüğü
Proje Numarası 2019-GAP-GİDF-0016
Tarihler

Başvuru Tarihi : 25 Aralık 2019
Kabul Tarihi : 25 Şubat 2020
Yayımlanma Tarihi : 31 Mart 2020

Bibtex @araştırma makalesi { ijastech664860, journal = {International Journal of Automotive Science And Technology}, issn = {}, eissn = {2587-0963}, address = {Gazi Üniversitesi Teknoloji Fakültesi Otomotiv Mühendisliği Bölümü, Teknikokullar, Ankara}, publisher = {Otomotiv Mühendisleri Derneği}, year = {2020}, volume = {4}, pages = {10 - 22}, doi = {10.30939/ijastech..664860}, title = {Utilizing Exhaust Valve Opening Modulation for Fast Warm-up of Exhaust After-treatment Systems on Highway Diesel Vehicles}, key = {cite}, author = {BAŞARAN, Hasan Üstün} }
APA BAŞARAN, H . (2020). Utilizing Exhaust Valve Opening Modulation for Fast Warm-up of Exhaust After-treatment Systems on Highway Diesel Vehicles. International Journal of Automotive Science And Technology , 4 (1) , 10-22 . DOI: 10.30939/ijastech..664860
MLA BAŞARAN, H . "Utilizing Exhaust Valve Opening Modulation for Fast Warm-up of Exhaust After-treatment Systems on Highway Diesel Vehicles". International Journal of Automotive Science And Technology 4 (2020 ): 10-22 <https://dergipark.org.tr/tr/pub/ijastech/issue/53254/664860>
Chicago BAŞARAN, H . "Utilizing Exhaust Valve Opening Modulation for Fast Warm-up of Exhaust After-treatment Systems on Highway Diesel Vehicles". International Journal of Automotive Science And Technology 4 (2020 ): 10-22
RIS TY - JOUR T1 - Utilizing Exhaust Valve Opening Modulation for Fast Warm-up of Exhaust After-treatment Systems on Highway Diesel Vehicles AU - Hasan Üstün BAŞARAN Y1 - 2020 PY - 2020 N1 - doi: 10.30939/ijastech..664860 DO - 10.30939/ijastech..664860 T2 - International Journal of Automotive Science And Technology JF - Journal JO - JOR SP - 10 EP - 22 VL - 4 IS - 1 SN - -2587-0963 M3 - doi: 10.30939/ijastech..664860 UR - https://doi.org/10.30939/ijastech..664860 Y2 - 2020 ER -
EndNote %0 International Journal of Automotive Science and Technology Utilizing Exhaust Valve Opening Modulation for Fast Warm-up of Exhaust After-treatment Systems on Highway Diesel Vehicles %A Hasan Üstün BAŞARAN %T Utilizing Exhaust Valve Opening Modulation for Fast Warm-up of Exhaust After-treatment Systems on Highway Diesel Vehicles %D 2020 %J International Journal of Automotive Science And Technology %P -2587-0963 %V 4 %N 1 %R doi: 10.30939/ijastech..664860 %U 10.30939/ijastech..664860
ISNAD BAŞARAN, Hasan Üstün . "Utilizing Exhaust Valve Opening Modulation for Fast Warm-up of Exhaust After-treatment Systems on Highway Diesel Vehicles". International Journal of Automotive Science And Technology 4 / 1 (Mart 2020): 10-22 . https://doi.org/10.30939/ijastech..664860
AMA BAŞARAN H . Utilizing Exhaust Valve Opening Modulation for Fast Warm-up of Exhaust After-treatment Systems on Highway Diesel Vehicles. ijastech. 2020; 4(1): 10-22.
Vancouver BAŞARAN H . Utilizing Exhaust Valve Opening Modulation for Fast Warm-up of Exhaust After-treatment Systems on Highway Diesel Vehicles. International Journal of Automotive Science And Technology. 2020; 4(1): 22-10.