Year 2018, Volume 38 , Issue 2, Pages 87 - 98 2018-10-31

FUEL-SAVING EXHAUST AFTER-TREATMENT MANAGEMENT ON A SPARKIGNITION ENGINE SYSTEM VIA CYLINDER DEACTIVATION METHOD
SİLİNDİR DEVRE DIŞI BIRAKMA METODU İLE KIVILCIM-ATEŞLEMELİ BİR MOTOR SİSTEMİNDE YAKIT-VERİMLİ EGZOZ ARITMA YÖNETİMİ

Hasan BAŞARAN [1]


Current on-road automotive engines generally require exhaust after-treatment systems to meet the stringent emission regulations. One major drawback of those systems is their inefficient performance at low loads due to low exhaust temperatures (Texhaust < 250oC). Typical on-engine techniques such as late fuel injection, exhaust gas recirculation and early exhaust valve opening require fuel consumption rise for exhaust temperature improvement. This study demonstrates that exhaust temperatures at light loads can be increased in a more fuel-saving manner via cylinder deactivation (CDA) method on a spark-ignition (SI) engine. Lotus Engine Simulation (LES) software is used to build the engine model and predict performance at 1500 RPM engine speed and over a range of constant engine torques (5 Nm to 25 Nm). In CDA mode, increased equivalence ratio of active cylinders results in up to 110oC exhaust temperature rise (Texhaust > 250oC) which maintains effective after-treatment at low loads. Also, after-treatment catalyst bed warm-up is improved through increased heat transfer rates. CDA technique causes a significant reduction on engine pumping loss through decreased air induction and hence is highly fuel-efficient. However, lower air induction also causes reduced exhaust flow rate which affects after-treatment warm-up negatively at some loads. ,
Günümüz karayolu otomotiv motorları genellikle sıkı emisyon yönetmeliklerini karşılamak için egzoz arıtma sistemlerine gereksinim duyarlar. Bu sistemlerin önemli bir dezavantajı, düşük yüklerde düşük egzoz sıcaklıkları (Tgaz < 250oC) nedeniyle verimsiz performans göstermeleridir. Geç yakıt enjeksiyonu, egzoz gazı devridaimi ve erken egzoz valfi açıklığı gibi tipik motor teknikleri egzoz sıcaklığı iyileştirmesi için yakıt tüketimi artışı gerektirmektedir. Bu çalışma, egzoz sıcaklıklarının düşük yüklerde silindir devre dışı bırakılması (CDA) metodu ile yakıt tasarrufu sağlayan bir şekilde arttırılabileceğini bir kıvılcımlı-ateşlemeli motor üzerinde göstermektedir. Lotus Motor Simülasyonu (LES) yazılımı, motor modelinin oluşturulması ve 1500 RPM motor hızı ve bir dizi sabit motor torku üzerinde (5 Nm'den 25 Nm'ye) motor performans hesabı için kullanılmıştır. CDA modunda, aktif silindirlerin artan yakıt-hava oranı 110oC'a kadar egzoz sıcaklık artışına neden olmakta (Tegzoz > 250oC) ki bu da düşük yüklerde verimli egzoz arıtımını sağlamaktadır. Ayrıca, artan ısı transfer oranları ile egzoz arıtım katalizör yatağının ısınması hızlandırılmaktadır. CDA tekniği, azaltılmış hava endüksiyonu yoluyla motor pompalama kaybında önemli bir azalmaya sebep olmakta ve bu nedenle yakıt tasarrufu sağlamaktadır. Bununla birlikte, daha düşük hava endüksiyonu düşük egzoz akış oranına neden olmakta ve bu da bazı yüklerde arıtma sisteminin ısınmasını olumsuz etkilemektedir.
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Primary Language en
Subjects Engineering, Mechanical
Journal Section Research Article
Authors

Author: Hasan BAŞARAN
Institution: IZMIR KATIP CELEBI UNIVERSITY
Country: Turkey


Dates

Publication Date : October 31, 2018

Bibtex @research article { isibted780479, journal = {Isı Bilimi ve Tekniği Dergisi}, issn = {1300-3615}, address = {}, publisher = {Türk Isı Bilimi ve Tekniği Derneği}, year = {2018}, volume = {38}, pages = {87 - 98}, doi = {}, title = {FUEL-SAVING EXHAUST AFTER-TREATMENT MANAGEMENT ON A SPARKIGNITION ENGINE SYSTEM VIA CYLINDER DEACTIVATION METHOD}, key = {cite}, author = {Başaran, Hasan} }
APA Başaran, H . (2018). FUEL-SAVING EXHAUST AFTER-TREATMENT MANAGEMENT ON A SPARKIGNITION ENGINE SYSTEM VIA CYLINDER DEACTIVATION METHOD . Isı Bilimi ve Tekniği Dergisi , 38 (2) , 87-98 . Retrieved from https://dergipark.org.tr/en/pub/isibted/issue/56344/780479
MLA Başaran, H . "FUEL-SAVING EXHAUST AFTER-TREATMENT MANAGEMENT ON A SPARKIGNITION ENGINE SYSTEM VIA CYLINDER DEACTIVATION METHOD" . Isı Bilimi ve Tekniği Dergisi 38 (2018 ): 87-98 <https://dergipark.org.tr/en/pub/isibted/issue/56344/780479>
Chicago Başaran, H . "FUEL-SAVING EXHAUST AFTER-TREATMENT MANAGEMENT ON A SPARKIGNITION ENGINE SYSTEM VIA CYLINDER DEACTIVATION METHOD". Isı Bilimi ve Tekniği Dergisi 38 (2018 ): 87-98
RIS TY - JOUR T1 - FUEL-SAVING EXHAUST AFTER-TREATMENT MANAGEMENT ON A SPARKIGNITION ENGINE SYSTEM VIA CYLINDER DEACTIVATION METHOD AU - Hasan Başaran Y1 - 2018 PY - 2018 N1 - DO - T2 - Isı Bilimi ve Tekniği Dergisi JF - Journal JO - JOR SP - 87 EP - 98 VL - 38 IS - 2 SN - 1300-3615- M3 - UR - Y2 - 2018 ER -
EndNote %0 Isı Bilimi ve Tekniği Dergisi FUEL-SAVING EXHAUST AFTER-TREATMENT MANAGEMENT ON A SPARKIGNITION ENGINE SYSTEM VIA CYLINDER DEACTIVATION METHOD %A Hasan Başaran %T FUEL-SAVING EXHAUST AFTER-TREATMENT MANAGEMENT ON A SPARKIGNITION ENGINE SYSTEM VIA CYLINDER DEACTIVATION METHOD %D 2018 %J Isı Bilimi ve Tekniği Dergisi %P 1300-3615- %V 38 %N 2 %R %U
ISNAD Başaran, Hasan . "FUEL-SAVING EXHAUST AFTER-TREATMENT MANAGEMENT ON A SPARKIGNITION ENGINE SYSTEM VIA CYLINDER DEACTIVATION METHOD". Isı Bilimi ve Tekniği Dergisi 38 / 2 (October 2018): 87-98 .
AMA Başaran H . FUEL-SAVING EXHAUST AFTER-TREATMENT MANAGEMENT ON A SPARKIGNITION ENGINE SYSTEM VIA CYLINDER DEACTIVATION METHOD. Isı Bilimi ve Tekniği Dergisi. 2018; 38(2): 87-98.
Vancouver Başaran H . FUEL-SAVING EXHAUST AFTER-TREATMENT MANAGEMENT ON A SPARKIGNITION ENGINE SYSTEM VIA CYLINDER DEACTIVATION METHOD. Isı Bilimi ve Tekniği Dergisi. 2018; 38(2): 87-98.
IEEE H. Başaran , "FUEL-SAVING EXHAUST AFTER-TREATMENT MANAGEMENT ON A SPARKIGNITION ENGINE SYSTEM VIA CYLINDER DEACTIVATION METHOD", Isı Bilimi ve Tekniği Dergisi, vol. 38, no. 2, pp. 87-98, Oct. 2018