Journals / Bitlis Eren Üniversitesi Fen Bilimleri Dergisi / 2020 / Cilt: 9 - Sayı: 3

The Effect of External Electronically Controlled Cooling Strategy in Diesel Engines on BSFC and NOx Emissions in EGR Gas Cooling

Dizel Motorlarda EGR Gazlarının Soğutulmasında Harici Elektronik Kontrollü Soğutma Stratejisinin BSFC ve NOx Emisyonlarına Etkisi

Pages
1219–1230
Publication Date
2022-10-12
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

As a result of the experiments carried out, it was observed that optimum NOx and BSFC values were obtained simultaneously at 15% EGR and 75℃.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Diesel engines emit nitrogen oxide (NOx) and particulate matter (PM), which have harmful effects on human and environmental health.
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Key Findings & Data:The experiments were carried out under steady-state operating conditions, at 1700 rpm, 2000 rpm, 5%, 10%, 15% EGR ratio, under load and no load conditions.
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Conclusion & Impact:As a result of the experiments carried out, it was observed that optimum NOx and BSFC values were obtained simultaneously at 15% EGR and 75℃.
🔬Design:Research Article
📍Scope:2000 Verileri
⚙️Variables:Domain Parameters

Abstract

Diesel engines emit nitrogen oxide (NOx) and particulate matter (PM), which have harmful effects on human and environmental health. Exhaust gas recirculation (EGR) system is one of the efficient and built-in systems used to reduce NOx emissions in diesel engines. In this experimental study, the effects of EGR system on NOx and brake specific fuel consumption (BSFC) were investigated. In this study, EGR gas temperatures entering the intake manifold and EGR ratios are discussed together. The experiments were carried out under steady-state operating conditions, at 1700 rpm, 2000 rpm, 5%, 10%, 15% EGR ratio, under load and no load conditions. The EGR cooler is disconnected from the engine main cooling system to effectively control EGR gas temperatures. An external electronically controlled cooling system consisting of radiator, electric water pump, electric fan, temperature sensors and controller is designed. As a result of the experiments carried out, it was observed that optimum NOx and BSFC values were obtained simultaneously at 15% EGR and 75℃.

Özet

Dizel motorlar insan ve çevre sağlığı açısından zararları etkileri olan azot oksit (NOx) ve partikül madde (PM)yayarlar. Dizel motorlarda NOx salınımını düşürmek için kullanılan etkin ve yerleşik sistemlerden biri egzoz gazresirkülasyon (EGR) sistemidir. Bu deneysel çalışmada, EGR sisteminin NOx ve fren özgül yakıt tüketimi (BSFC)üzerine olan etkileri araştırılmıştır. Çalışmada emme manifolduna giren EGR gaz sıcaklıkları ile EGR oranlarıbirlikte ele alınmıştır. Deneyler kararlı durum çalışma koşullarında, 1700 d/d, 2000 d/d’da, %5, %10, %15 EGRoranlarında, yüklü ve yüksüz koşullarda yapılmıştır. EGR gaz sıcaklıklarının etkin bir şekilde kontrol edilebilmesiiçin EGR soğutucusu, motor ana soğutma sisteminden ayrılmıştır. Radyatör, elektrikli su pompası, elektrikli fan,sıcaklık sensörleri ve kontrolcüden oluşan harici elektronik kontrollü bir soğutma sistemi tasarlanmıştır.Gerçekleştirilen deneyler sonucunda eş zamanlı olarak, %15 EGR ve 75℃'de optimum NOx ve BSFC değerlerininelde edildiği görülmüştür.

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Cite This Article

BAKIRCI, K., AKOLAŞ, H. İ., KALELİ, A. (2022). The Effect of External Electronically Controlled Cooling Strategy in Diesel Engines on BSFC and NOx Emissions in EGR Gas Cooling. Bitlis Eren Üniversitesi Fen Bilimleri Dergisi, Cilt: 9 - Sayı: 3, 1219–1230. https://ajindex.com/articles/466732

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