Performance and Durability Assessment of Two Emission Control Technologies Installed on a Legacy High-Speed Marine Diesel Engine

2015 ◽  
Author(s):  
Jonathan DeHart ◽  
Robert Russell ◽  
John Storey ◽  
Michael Kass ◽  
Richard DeCorso ◽  
...  
Keyword(s):  
High Speed ◽  
Alternative Fuels ◽  
Emission Control ◽  
Cost Effective ◽  
Operating Conditions ◽  
Marine Engines ◽  
Marine Diesel ◽  
Durability Assessment ◽  
Reduce Emissions ◽  
Control Technologies

The Navy pilot program investigated cost-effective technologies to reduce emissions from legacy marine engines. High-speed, high-population engine models in both commercial and Navy fleets were targeted. Emission reductions were sought that would minimize fuel penalty as well as installation and operating costs. Navy operating conditions and fuels limited options. Five highly rated technologies were laboratory tested on a Detroit Diesel Corporation 12V-71N engine using two military and three alternative fuels. Two control technologies were then shipboard tested (baseline, 1-year early degradation, and 9-year late-life). Conclusions and recommendations are provided to inform application of these and similar emission control technologies within both commercial and Navy fleets.

scholarly journals Model tests of a marine diesel engine powered by a fuel-alcohol mixture

2021 ◽  
Author(s):  
Marcin Zacharewicz ◽  
Tomasz Kniaziewicz
Keyword(s):  
Mathematical Model ◽  
Diesel Engine ◽  
Alternative Fuels ◽  
Fossil Fuels ◽  
Diesel Oil ◽  
Marine Diesel Engine ◽  
Engine Model ◽  
Marine Engines ◽  
Marine Diesel ◽  
The Mathematical Model

The paper presents the results of model and empirical tests conducted for a marine diesel engine fueled by a blend of n-butanol and diesel oil. The research were aimed at assessing the usefulness of the proprietary diesel engine model in conducting research on marine engines powered by alternative fuels to fossil fuels. The authors defined the measures of adequacy. On their basis, they assessed the adequacy of the mathematical model used. The analysis of the results of the conducted research showed that the developed mathematical model is sufficiently adequate. Therefore, both the mathematical model and the computer program based on it will be used in further work on supplying marine engines with mixtures of diesel oil and biocomponents.

Waste Gas End-of-Pipe Treatment Techniques in Italian IPPC Chemical Plants

2018 ◽  
pp. 3156-3171
Author(s):  
Gaetano Battistella ◽  
Giuseppe Di Marco ◽  
Carlo Carlucci ◽  
Raffaella Manuzzi ◽  
Federica Bonaiuti ◽  
...  
Keyword(s):  
Environmental Conditions ◽  
Inorganic Compounds ◽  
Emission Control ◽  
Operating Conditions ◽  
Chemical Plants ◽  
Waste Gas ◽  
Treatment Techniques ◽  
Emission Regulations ◽  
Control Technologies ◽  
Bat Conclusions

Due to more stringent emission regulations, very efficient emission control technologies are required adopting National IPPC Permits based on BAT Conclusions. Some abatement techniques are operating inside IPPC plants based in Italy. This paper include the results of a screening of Italian IPPC Plants up to day, trying to highlight operating conditions of abatement devices and possible already existing improvements for several compounds removal. The abatement techniques analyzed operate mainly on VOC content reduction or on inorganic compounds abatement. ISPRA experience has allowed to analyze different operative conditions, related with abatement techniques and their application in IPPC permitted plants. The results of this analysis allow to suggest a possible reconsideration and new assessment for some end-of-pipe devices, in order to find other better defined operational contexts, different from actually Italian provisions and an evaluation of current operational performances of the devices, in order to improve their environmental conditions, consistently with BAT application.

Progress on Denitration and Desulfuration Technologies for Marine Diesel Engines

2015 ◽  
Vol 713-715 ◽  
pp. 51-56
Author(s):  
Ya Qiong Liu ◽  
Jia Zhen Du ◽  
Pi Qiang Tan ◽  
Ai Min Du
Keyword(s):  
Diesel Engines ◽  
Emission Control ◽  
Pollutant Emissions ◽  
Exhaust Emission ◽  
Formation Mechanisms ◽  
Emission Regulations ◽  
Marine Diesel ◽  
Practical Performance ◽  
Control Technologies ◽  
Future Technologies

Exhaust emission regulations issued by International Maritime Organization (IMO) for marine diesel engines are given and formation mechanisms for several pollutant emissions are introduced. Main denitration and desulfuration technologies for reducing NOx and SOx emissions are seperately summarized. In addition, working mechanism of different emission control technologies and their applications on marine diesel engines are introduced. These different emission control technologies are analyzed by evaluating conversion efficiency, economy and practical performance, and existed problems and future technologies are given. A Combination of different denitration and desulfuration technologies is a inevitable trend for emission reduction of marine diesel engines.

scholarly journals Numerical Model of SO2 Scrubbing with Seawater Applied to Marine Engines

2016 ◽  
Vol 23 (2) ◽  
pp. 42-47 ◽  
Author(s):  
M. I. Lamas ◽  
C. G. Rodríguez ◽  
J. D. Rodríguez ◽  
J. Telmo
Keyword(s):  
Alternative Fuels ◽  
Operating Cost ◽  
Experimental Tests ◽  
Fuel Oil ◽  
Distilled Water ◽  
Cleaning Efficiency ◽  
Heavy Fuel Oil ◽  
Engine Exhaust ◽  
Marine Engines ◽  
Marine Diesel

AbstractThe present paper proposes a CFD model to study sulphur dioxide (SO2) absorption in seawater. The focus is on the treatment of marine diesel engine exhaust gas. Both seawater and distilled water were compared to analyze the effect of seawater alkalinity. The results indicate that seawater is more appropriate than distilled water due to its alkalinity, obtaining almost 100% cleaning efficiency for the conditions analyzed. This SO2reduction meets the limits of SOxemission control areas (SECA) when operating on heavy fuel oil. These numerical simulations were satisfactory validated with experimental tests. Such data are essential in designing seawater scrubbers and judging the operating cost of seawater scrubbing compared to alternative fuels.

scholarly journals SYSTEMS OF MONITORING MARINE DIESEL ENGINES IN OPERATION

2018 ◽  
pp. 87-92 ◽  
Author(s):  
Alexey Valerievich Soloviev
Keyword(s):  
Diesel Engines ◽  
High Speed ◽  
Monitoring Systems ◽  
Technical Diagnostics ◽  
Diagnostic Systems ◽  
Technical Parameters ◽  
Advantages And Disadvantages ◽  
Marine Engines ◽  
Marine Diesel ◽  
Processing Information

The article provides an overview of currently used diagnostic systems of medium- and high-speed marine diesel engines. The parameters controlled by diagnostic systems have been discussed. The advantages and disadvantages of the monitoring systems of marine diesel engines designed as a single software-hardware complex have been analyzed. As it has been stated, universal monitoring systems for engines of different models are not created. Specialized diagnostic systems are only installed in powerful engines which are used on sea-going ships, not on river vessels and mixed (river-sea) navigation vessels; such complexes have not been applied so far. According to the results of the analysis, there have been listed engine diagnostic parameters required for implementing algorithms of automatic diagnostics without disassembling. The paper presents a review of commercially available sensors for measuring parameters of engines in operation. It has been shown that currently the decision of tasks of technical diagnostics of marine engines and, therefore, other less complex mechanisms of a ship power plant on the river vessels is possible because of modern electronic control systems that allow continuous monitoring of technical parameters, i.e. collecting and processing information received from sensors of the controlled variables and processes.

Waste Gas End-of-Pipe Treatment Techniques in Italian IPPC Chemical Plants

2019 ◽  
pp. 250-267
Author(s):  
Gaetano Battistella ◽  
Giuseppe Di Marco ◽  
Carlo Carlucci ◽  
Raffaella Manuzzi ◽  
Federica Bonaiuti ◽  
...  
Keyword(s):  
Environmental Conditions ◽  
Inorganic Compounds ◽  
Emission Control ◽  
Operating Conditions ◽  
Chemical Plants ◽  
Waste Gas ◽  
Treatment Techniques ◽  
Emission Regulations ◽  
Control Technologies ◽  
Bat Conclusions

Due to more stringent emission regulations, very efficient emission control technologies are required adopting national IPPC permits based on BAT conclusions. Some abatement techniques are operating inside IPPC plants based in Italy. This chapter includes the results of a screening of Italian IPPC plants, trying to highlight operating conditions of abatement devices and possible already existing improvements for several compounds removal. The abatement techniques analyzed operate mainly on VOC content reduction or on inorganic compounds abatement. ISPRA experience has allowed to analyze different operative conditions, related with abatement techniques and their application in IPPC permitted plants. The results of this analysis suggest a possible reconsideration and new assessment for some end-of-pipe devices in order to find other, better-defined operational contexts, different from Italian provisions and an evaluation of current operational performances of the devices, in order to improve their environmental conditions consistently with BAT application.

Spray Characterization From Common Rail Injection System for Use in Locomotive Engines

2007 ◽  
Author(s):  
Essam El-Hannouny ◽  
Douglas Longman ◽  
Steven McConnell ◽  
Xingbin Xie ◽  
Ming-Chai Lai ◽  
...  
Keyword(s):  
High Speed ◽  
Alternative Fuels ◽  
Operating Conditions ◽  
Common Rail ◽  
Pollutant Emissions ◽  
Injection System ◽  
Emissions Reduction ◽  
Common Rail Injection System ◽  
Spray Structure ◽  
Common Rail Injection

New U.S. Environmental Protection Agency regulations are forcing locomotive manufacturers and railroads to reduce pollutant emissions from locomotive operation. Locomotive engines will be required to meet the applicable standards at the time of original manufacture. A variety of emissions-reduction technologies can be used, such as alternative fuels, additives in lubricant oil, and aftertreatment technologies (e.g., selective catalytic reduction and particulate traps). Emissions reduction can also be accomplished inside the cylinder, using advanced diesel fuel injectors that have a significant impact on the quality of spray and charge preparation before engine combustion and subsequent events. High-speed optical measurements have been collected at elevated ambient pressures for sprays from a modular common rail injection system at Argonne National Laboratory in order to investigate spray structure and dynamics. High-speed laser imaging was used to explore the effects of various parameters on the spray structure. The experimental parameters included were ambient gas density, injection pressure, number of spray holes, injection strategy, and internal orifice size. Spray symmetry and structure were found to depend significantly on the nozzle geometry or manufacturing variances and the operating conditions.

Droop Nose With Elastic Skin

2016 ◽  
Author(s):  
Johannes Riemenschneider ◽  
Martin Radestock ◽  
Srinivas Vasista ◽  
Oliver Huxdorf ◽  
Hans Peter Monner
Keyword(s):  
High Speed ◽  
Compliant Mechanism ◽  
Experimental Testing ◽  
Leading Edge ◽  
Operating Conditions ◽  
Driving Mechanism ◽  
Root Region ◽  
Reduce Emissions ◽  
Wing Airfoil ◽  
The Eu

Morphing is a technology with high potential to reduce emissions in aviation by adapting the shape of the wings to varying external operating conditions. This paper is presenting results from the EU FP7 funded CHANGE project, where different concepts to adapt a UAV wing airfoil to different demands were investigated. The paper is concentrating on the design and experimental testing of a droop nose, which transforms the leading edge part of the 60 cm chord airfoil from a NACA 6510 shape for loiter and low speed to a NACA 2510 shape for a high speed mission. This paper is presenting the use of an especially soft skin, which reduces the needed force for morphing. That way the requirements for the servos driving the droop nose could be reduced significantly. This paper is showing the implications of such a soft design on the accuracy of the shape generated. For such a skin design, the driving mechanism of the system is designed as a compliant mechanism, which was generated by topology optimization, taking into account aerodynamic loads. For easy manufacturing reasons, thermoplastic polylactic acid (PLA) with zero warp property was used for the manufacturing of this compliant mechanism. Finally deformation measurements of the morphing skin were carried out in a series of lab tests. The match between measured and numerically derived section is quite good, especially in the root region of the wing. Finally an example of an alternative concept to the soft approach is presented. It is the metal based compliant mechanism with a rather stiff GFRP skin. A discussion on the use of different materials and the way forward towards 3D skin optimization is wrapping up the paper.

scholarly journals Suitability of Different Methods for Measuring Black Carbon Emissions from Marine Engines

Atmosphere ◽  
2021 ◽  
Vol 13 (1) ◽  
pp. 31
Author(s):  
Päivi Aakko-Saksa ◽  
Niina Kuittinen ◽  
Timo Murtonen ◽  
Päivi Koponen ◽  
Minna Aurela ◽  
...  
Keyword(s):  
Black Carbon ◽  
Emission Control ◽  
Atmospheric Measurements ◽  
Adverse Health Effects ◽  
Laser Induced Incandescence ◽  
Marine Engines ◽  
Marine Diesel ◽  
Control Devices ◽  
The Impact ◽  
Inform Decision Making

Black carbon (BC) emissions intensify global warming and are linked to adverse health effects. The International Maritime Organization (IMO) considers the impact of BC emissions from international shipping. A prerequisite for the anticipated limits to BC emissions from marine engines is a reliable measurement method. The three candidate methods (photoacoustic spectroscopy (PAS), laser-induced incandescence (LII), and filter smoke number (FSN)) selected by the IMO were evaluated with extensive ship exhaust matrices obtained by different fuels, engines, and emission control devices. A few instruments targeted for atmospheric measurements were included as well. The BC concentrations were close to each other with the smoke meters (AVL 415S and 415SE), PAS (AVL MSS), LII (Artium-300), MAAP 5012, aethalometers (Magee AE-33 and AE-42), and EC (TOA). In most cases, the standard deviation between instruments was in the range of 5–15% at BC concentrations below 30 mg Sm−3. Some differences in the BC concentrations measured with these instruments were potentially related to the ratio of light-absorbing compounds to sulphates or to particle sizes and morphologies. In addition, calibrations, sampling, and correction of thermophoretic loss of BC explained differences in the BC results. However, overall differences in the BC results obtained with three candidate methods selected by the IMO were low despite challenging exhaust compositions from marine diesel engines. Findings will inform decision making on BC emission control from marine engines.

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