Biyodizel pilot yakıtlı doğalgaz motorunda performans karakteristiklerinin Stokastik Reaktör Model kullanılarak incelenmesi

Year 2019, Volume: 5 Issue: 1, 53 - 63, 01.11.2019

Enes Fatih Pehlivan İsmail Altın

Abstract

Bu çalışmada, bir
doğalgaz motorunda farklı biyodizel pilot yakıt püskürtme basınçlarının
performans karakteristiklerine etkileri stokastik reactor modele (SRM) dayanan
‘Kinetics & SRM Engine Suite’ yazılımı kullanılarak incelenmiştir. Motorun
yanma işleminin benzetimini yapmak için bu gelişmiş yazılım yakıtların kimyasal
kinetik mekanizmalarını kullanır. Bu çalışmada, biyodizel yakıtı yansıtmak için
71 bileşen ve 217 reaksiyon içeren ‘Metil dekanoat/metil-9 dekenoat/n-heptan’
kimyasal kinetik mekanizması biyodizelin yerini tutan yakıt kimyasal kinetik
mekanizması olarak tanımlanmıştır. Yazılım araçları vasıtasıyla ayarlanan
teorik model deneysel very aracılığıyla doğrulanmıştır. Sonrasında, biyodizel
pilot yakıtlı doğalgaz motorunun motor performans karakteristiklerini incelemek
için benzetim işlemi üç farklı stokastik parçacık sayısında (50, 100 ve 150)
gerçekleştirilmiştir. Pilot yakıt püskürtme basıncının artmasıyla motor
döndürme momenti ve efektif gücün arttığı fakat özgül yakıt tüketiminin
azaldığı gözlemlenmiştir. Buna ek olarak, simülasyonda kullanılan çeşitli
stokastik parçacık sayılarının benzetimi yapılmış motor performans karakteristik
verilerini önemli ölçüde etkilemediği saptanmıştır.

Keywords

Çift yakıtlı motor, Doğalgaz, Biyodizel pilot yakıt, Stokastik Reaktör Model, Motor Performansı

Investigation of performance characteristics using Stochastic Reactor Model in a biodiesel pilot-fueled natural gas engine

Abstract

In this study, the
effects of different biodiesel pilot fuel injection pressures on performance
characteristics of a natural gas engine were investigated using ‘Kinetics &
SRM Engine Suite’ software which is based on stochastic reactor model (SRM).
This advanced software uses chemical kinetic mechanisms of fuels to simulate
combustion process of the engine. ‘Methyl decanoate/methyl-9-decenoate/n-heptane’
reduced chemical kinetic mechanism including 71 species and 217 reactions were
defined as a biodiesel surrogate fuel chemical kinetic mechanism to represent
biodiesel fuel in this study. Theoretical model set by the way of software
tools was validated by experimental data. Then, simulation was run in three
different stochastic particle numbers (50, 100, and 150) to investigate engine
performance characteristics of a biodiesel pilot-fueled natural gas engine. It
is observed that as pilot fuel injection pressure increases, engine torque and
brake power enhance, but brake specific fuel consumption decreases.
Furthermore, various stochastic particle numbers used in the simulation did not
dramatically affect data of engine performance characteristics simulated.

Keywords

Dual fuel engine, Natural gas, Biodiesel pilot fuel, Stochastic Reactor Model, Engine Performance

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