Journal ArticleDOI
Combustion and emission characteristics of an electronically-controlled common-rail dual-fuel engine
Qiang Zhang,Na Li,Menghan Li +2 more
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TLDR
In this article, an experimental investigation was carried out to study the effect of injection timing, diesel injection pressure, substitution rate of natural gas as well as engine load on the combustion and emission characteristics of an electronically controlled common-rail diesel/natural gas dual fuel engine.Abstract:
An experimental investigation was carried out to study the effect of injection timing, diesel injection pressure, substitution rate of natural gas as well as engine load on the combustion and emission characteristics of an electronically controlled common-rail diesel/natural gas dual fuel engine. The tests were conducted at a fixed engine speed of 1200 r/min, while other parameters were varied in reference to different study purposes. It can be concluded from the experimental results that maximum in-cylinder pressure and maximum heat release rate as well as the combustion noise are generally increased as injection timing advances and injection pressure increases, while decreases at higher substitution rate. Concerning the emission characteristics, THC and CO emissions could be improved by advancing injection timing and increasing diesel injection pressure with penalty on NOx emissions; in addition, THC emissions are significantly increased at higher load and higher substitution rate, while CO emissions reduce considerably with increasing load but tend to be less sensitive to substitution rate; NOx emissions can be mitigated by application of higher substitution rate and get worse as engine load increases.read more
Citations
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Journal ArticleDOI
An experimental and numerical study on diesel injection split of a natural gas/diesel dual-fuel engine at a low engine load
TL;DR: In this article, the effect of different injection strategies (single and two pulses injection of pilot diesel fuel) on the combustion performance and emissions of a heavy duty natural gas/diesel dual-fuel engine at 25% engine load was evaluated.
Journal ArticleDOI
Development of a new reduced diesel/natural gas mechanism for dual-fuel engine combustion and emission prediction
TL;DR: In this paper, a reduced n-heptane-n-butylbenzene-polycyclic aromatic hydrocarbon (PAH) mechanism with 746 reactions and 143 species was developed for predicting the combustion characteristics and emission in dual-fuel engines.
Journal ArticleDOI
Marine dual fuel engine modelling and parametric investigation of engine settings effect on performance-emissions trade-offs
Sokratis Stoumpos,Gerasimos Theotokatos,Evangelos Boulougouris,Dracos Vassalos,Iraklis Lazakis,George Livanos +5 more
TL;DR: In this article, a large marine dual fuel (DF) engine of the four-stroke type for comparing its performance and emissions, in both the diesel and gas operaitng modes by using the commercial software GT-ISE.
Journal ArticleDOI
Experimental analysis of NOx reduction through water addition and comparison with exhaust gas recycling
José Ramón Serrano,Francisco J. Jiménez-Espadafor,A. Lora,Luis B. Modesto-López,Alfonso M. Gañán-Calvo,Jorge Lopez-Serrano +5 more
TL;DR: In this article, the authors analyzed the weaknesses and the strengths of adding water into the intake manifold with a flow-blurring injector for NOx reduction on a current technology diesel engine with multiple injection thorough a proprietary tool for heat release rate that considered real gas properties.
Journal ArticleDOI
Effects of Hydrogen Addition on the Performance of a Pilot-Ignition Direct-Injection Natural Gas Engine: A Numerical Study
TL;DR: In this article, numerical simulations have been performed for the combustion process of a pilot-ignition direct-injection natural gas engine based on an integrated mechanism which is capable of describing the chemical kinetics involving diesel, natural gas, and hydrogen.
References
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Journal ArticleDOI
Natural-gas fueled spark-ignition (SI) and compression-ignition (CI) engine performance and emissions
TL;DR: In this article, a dual-fuel engine with high-cetane fuel and natural gas injection is used to provide a source of ignition for the charge of a spark-ignition (SI) engine.
Journal ArticleDOI
Effect of fuel injection timing and pressure on combustion, emissions and performance characteristics of a single cylinder diesel engine
Avinash Kumar Agarwal,Dhananjay Kumar Srivastava,Atul Dhar,Rakesh Kumar Maurya,Pravesh Chandra Shukla,Akhilendra Pratap Singh +5 more
TL;DR: In this paper, a single cylinder research engine was used to experimentally determine the effects of fuel injection strategies and injection timings on engine combustion, performance and emission characteristics, and the experiments were conducted at constant speed (2500-rpm) with two FIPs (500 and 1000 bars respectively) and different start of injection (SOI) timings.
Journal ArticleDOI
Emission characteristics of high speed, dual fuel, compression ignition engine operating in a wide range of natural gas/diesel fuel proportions
Roussos G. Papagiannakis,Constantine D. Rakopoulos,Dimitrios T. Hountalas,Dimitrios C. Rakopoulos +3 more
TL;DR: In this article, an experimental investigation has been conducted to examine the effects of the total air-fuel ratio on the efficiency and pollutant emissions of a high speed, compression ignition engine located at the authors' laboratory, where liquid diesel fuel is partially substituted by natural gas in various proportions, with the natural gas fumigated into the intake air.
Journal ArticleDOI
Effect of injection timing on the performance of a dual fuel engine
TL;DR: In this paper, the effect of injection timing of pilot fuel on the performance of an indirect Diesel engine fueled with gaseous fuel was investigated on a special single cylinder compression ignition research engine (Ricardo E6).
Journal ArticleDOI
Influence of injection timing on the exhaust emissions of a dual-fuel CI engine
TL;DR: In this article, the influence of injection timing on the exhaust emission of a single cylinder, four stroke, direct injection, naturally aspirated diesel engine has been experimentally investigated using ethanol blended diesel fuel from 0% to 15% with an increment of 5%.