EFFECTS OF NOZZLE OPENING PRESSURE AND FUEL INJECTION TIMING ON ENGINE PERFORMANCE AND EXHAUST EMISSIONS OF A DIESEL ENGINE FUELLED WITH MARINE FUELS

Yıl 2020, , 259 - 284, 25.12.2020

Yiğit Gülmez , Mustafa Nuran

https://doi.org/10.18613/deudfd.837288

Cited By: 2

Öz

The study aims to investigate the effects of operational parameters such as nozzle opening pressure and fuel injection timing on exhaust emissions of a single cylinder diesel engine fuelled with distilled marine fuels. Tests were performed on a single cylinder, 13 kW, natural aspirated, direct injection and air cooled diesel engine at 1600 RPM constant engine speed. The tests were conducted for three different nozzle opening pressures (20, 22 and 24 MPa) and 3 different nozzle opening pressures (25° bTDC, 20° bTDC and 15° bTDC). The experiments were repeated at least three times to increase the reliability of the results. The results of the study show that increasing nozzle opening pressure increases the BTE and NOx emissions whereas decreases CO emissions, specific fuel consumption and exhaust gas temperature. Advancing fuel injection timing reduces the CO emissions but increases NOx emissions. The paper provides detailed test results, explanations and discussion.

Anahtar Kelimeler

Diesel engines, nozzle opening pressure, injection timing, exhaust emissions, marine fuels

Destekleyen Kurum

Dokuz Eylül University Scientific Research Coordination Unit

Proje Numarası

2015.KB.SOS.004

DENİZ YAKITLARI KULLANILAN BİR DİZEL MOTORDA ENJEKTÖR AÇILMA BASINCI VE YAKIT PÜSKÜRTME ZAMANLAMASININ MOTOR PERFORMANSI VE EGZOZ SALIMLARI ÜZERİNDEKİ ETKİLERİ

Öz

Bu çalışma yakıt olarak deniz yakıtları kullanılan bir dizel motorda enjektör açılma basıncı ve yakıt püskürtme zamanlamasının motor performansı ve egzoz salımları üzerindeki etkilerini gözlemlemeyi amaçlamaktadır. Çalışma kapsamında yapılan ölçümler 13 kW güce sahip, tek silindirli, doğal emişli, direkt püskürtmeli ve hava soğutmalı bir dizel motorda 1600 RPM sabit motor devrinde yapılmıştır. Deneyler üç farklı enjektör açılma basıncı (20, 22 ve 24 MPa) ve üç farklı püskürtme zamanlaması (ÜÖN öncesi 25°, ÜÖN öncesi 20° ve ÜÖN öncesi 15°) değerlerinin kullanılmasıyla yapılmıştır. Tüm ölçümler sonuçların güvenilirliğini arttırmak üzere en az üç defa tekrar edilmiştir. Çalışmanın sonuçları, enjektör açılma basıncındaki artışın fren termal verimi ve azot oksit salımlarını arttırdığını ancak karbonmonoksit salımları, egzoz gaz sıcaklığı ve özgül yakıt sarfiyatını arttırdığı görülmüştür. Yakıt püskürtme zamanlamasının erkene alınmasının ise karbonmonoksit salımlarının düşmesini sağladığı ancak azot oksit salımlarının artışına sebep olduğu görülmüştür. Çalışma deneylerle ilgili detaylı sonuçları, açıklamaları ve konu ile ilgili tartışma kısımlarını içermektedir.

Anahtar Kelimeler

Dizel motorlar, enjektör açılma basıncı, yakıt püskürtme zamanlaması, egzoz salımları, deniz yakıtları

Proje Numarası

2015.KB.SOS.004

Kaynakça

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