A Diagnostic Method for Heavy-Duty Diesel Engines Used in Stationary Applications

2004 ◽  
Vol 126 (4) ◽  
pp. 886-898 ◽  
Author(s):  
D. T. Hountalas ◽  
D. A. Kouremenos ◽  
M. Sideris
Keyword(s):  
Power Generation ◽  
Diesel Engine ◽  
High Efficiency ◽  
Engine Performance ◽  
Efficient Operation ◽  
Power Sources ◽  
Initial Stage ◽  
Alternative Power ◽  
Heavy Duty Diesel ◽  
Engine Condition

The diesel engine is used for power generation in stationary applications especially in isolated areas not connected to the main distribution network due to its relatively high efficiency, durability, and flexibility compared to alternative power sources. The diesel engine can easily follow power fluctuations. For this reason it is widely used for power generation in Islands in Greece. The diesel engine is a complex machine and requires intensive maintenance to insure proper and efficient operation. This is amplified by the interaction between the engine and the exhaust gas turbocharger. The present work describes an advanced troubleshooting method, based mainly on thermodynamics, for stationary engine monitoring and fault detection. The method is based on the processing of measured engine data using a simulation model and provides the current engine condition and its tuning. An application of the method on a slow speed diesel engine used for power generation is presented. The method is applied in the field and the results reveal the condition of the engine and its subsystems. Furthermore, proposals are made to improve engine performance. The method is most useful since it is possible to detect faults at their initial stage that may in the future result in serious problems and limit the availability of the engine.

A Study on Adaptability of the Engine Control Module of an Existing Heavy Duty Diesel Engine to Optimize the Engine Performance With F-T Diesel Fuel

2007 ◽  
Author(s):  
Praveen Kandulapati ◽  
Chuen-Sen Lin ◽  
Dennis Witmer ◽  
Thomas Johnson ◽  
Jack Schmid ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Load Condition ◽  
Engine Performance ◽  
Injection Timing ◽  
Heavy Duty ◽  
Synthetic Fuels ◽  
Control Module ◽  
Heavy Duty Diesel Engine ◽  
Heavy Duty Diesel

Synthetic fuels produced from non-petroleum based feedstocks can effectively replace the depleting petroleum based conventional fuels while significantly reducing the emissions. The zero sulfur content and the near zero percentage of aromatics in the synthetic fuels make them promising clean fuels to meet the upcoming emissions regulations. However due to their significantly different properties when compared to the conventional fuels; the existing engines must be tested extensively to study their performance with the new fuels. This paper reports a detailed in-cylinder pressure measurement based study made on adaptability of the engine control module (ECM) of a modern heavy duty diesel engine to optimize the engine performance with the F-T diesel fuel. During this study, the F-T and Conventional diesel fuels were tested at different loads and various injection timing changes made with respect to the manufacturer setting. Results from these tests showed that the ECM used significantly different injection timings for the two fuels in the process of optimizing the engine performance. For the same power output the ECM used a 2° advance in the injection timing with respect to the manufacturer setting at the full load and 1° retard at the no load condition. While the injection timings used by the ECM were same for both the fuels at the 50% load condition. However, a necessity for further changes in the control strategies used by the ECM were observed to get the expected advantages with the F-T fuels.

Impact of military JP-8 fuel on heavy-duty diesel engine performance and emissions

2007 ◽  
Vol 221 (8) ◽  
pp. 957-970 ◽  
Author(s):  
G Fernandes ◽  
J Fuschetto ◽  
Z Filipi ◽  
D Assanis ◽  
H McKee
Keyword(s):  
Particulate Matter ◽  
Diesel Engine ◽  
Fuel Economy ◽  
Engine Performance ◽  
Heavy Duty ◽  
Heavy Duty Diesel Engine ◽  
Performance And Emissions ◽  
Heavy Duty Diesel ◽  
Engine Performance And Emissions ◽  
The Impact

Investigating the impact of jet fuel on diesel engine performance and emissions is very important for military vehicles, due to the US Army Single Fuel Forward Policy mandating that deployed vehicles must refuel with aviation fuel JP-8. There is a known torque and fuel economy penalty associated with the operation of a diesel engine with JP-8 fuel, due to its lower density and viscosity. On the other hand, a few experimental studies have suggested that kerosene-based fuels have the potential for lowering exhaust emissions, especially particulate matter, compared to diesel fuel #2 (DF-2). However, studies so far have typically focused on quantifying the effects of simply replacing the regular DF-2 with JP-8, rather than fully investigating the reasons behind the observed differences. This research evaluates the effect of using JP-8 fuel in a heavy-duty diesel engine on fuel injection, combustion, performance, and emissions, and subsequently utilizes the obtained insight to propose changes to the engine calibration to mitigate the impact of the trade-offs. Experiments were carried out on a Detroit Diesel Corporation (DDC) S60 engine outfitted with exhaust gas recirculation (EGR). The results indicate that torque and fuel economy of diesel fuel can be matched, without smoke or NO x penalty, by increasing the duration of injection to compensate for the lower fuel density. The lower cetane number of JP-8 caused an increased ignition delay and increased premixed combustion, and their cumulative effect led to relatively unchanged combustion phasing. Under almost all conditions, JP-8 led to lower NO x and particulate matter (PM) emissions and shifted the NO x-PM trade-off favourably.

Self-Cleaning Solar Mirrors Using Electrodynamic Dust Shield: Prospects and Progress

2014 ◽  
Author(s):  
Malay K. Mazumder ◽  
Mark N. Horenstein ◽  
Jeremy W. Stark ◽  
John N. Hudelson ◽  
Arash Sayyah ◽  
...  
Keyword(s):  
Power Generation ◽  
Particle Size ◽  
High Efficiency ◽  
Solar Collectors ◽  
Parabolic Trough ◽  
Atmospheric Dust ◽  
Efficient Operation ◽  
Dust Layer ◽  
Wide Range ◽  
Self Cleaning

Parabolic trough and power tower technologies provide inherent advantage of thermal energy storage and high efficiency of the Concentrating Solar Power (CSP) systems for utility scale solar plants. High efficiency CSP power generation with minimal water use is one of the SunShot goals of the US Department of Energy. The specular reflectance efficiency of the solar mirrors plays a critical role in the efficiency of power generation. The optical surface of the mirrors and the receiver must be kept clean for efficient operation of the plant. Some environmental challenges in operating the large-scale CSP plants at high reflectance efficiency arise from high concentration of atmospheric dust, wind speed and variation of relative humidity (RH) over a wide range. Deposited dust and other contaminant particles, such as soot, salt, and organic particulate matters attenuate solar radiation by scattering and absorption. Adhesion of these particles on the mirror surface depends strongly by their composition and the moisture content in the atmosphere. Presence of soluble inorganic and organic salts cause corrosion of the mirror unless the contaminants are cleaned frequently. In this paper, we briefly review (1) source of atmospheric dust and mechanisms involved in degradation of mirrors caused by salt particles, (2) loss of specular reflection efficiency as a function of particle size distribution and composition, and (3) an emerging technology for removing dust layer by using thin transparent electrodynamic screen (EDS). Feasibility of integration of EDS on the front surface of the solar collectors has been established to provide active self-cleaning properties for parabolic trough and heliostat reflectors. Prototype EDS-integrated solar collectors including second-surface glass mirrors, metallized acrylic film mirrors, and dielectric mirrors, were produced and tested in an environmental test chambers simulating desert atmospheres. The test results show that frequent removal of dust layer can maintain the specular reflectivity of the mirrors above 90% under dust deposition at a rate ranging from 0 to 10 g/m2, with particle size varying from 1 to 50 μm in diameter. The energy required for removing the dust layer from the solar was less than 10 Wh/m2 per cleaning cycle. EDS based cleaning could therefore be automated and performed as frequently as needed to maintain reflection efficiency above 90% and thus reducing water usage for cleaning mirrors in the solar field. A comparative cost analysis was performed between EDS and deluge water based cleaning that shows the EDS method is commercially viable and would meet water conservation needs.

scholarly journals Effect of Biodiesel B100 and Ethanol Blends on the Performance of Small Diesel Engine

2021 ◽  
Vol 2 (2) ◽  
pp. 101
Author(s):  
Alfian Firdiansyah ◽  
Nasrul Ilminnafik ◽  
Agus Triono ◽  
Muh Nurkoyim Kustanto
Keyword(s):  
Diesel Engine ◽  
Diesel Engines ◽  
Alternative Energy ◽  
High Efficiency ◽  
Engine Performance ◽  
Exhaust Gas ◽  
Calophyllum Inophyllum ◽  
Ethanol Blends ◽  
High Level ◽  
Test Fuel

<p class="02abstracttext"><span lang="IN">A small diesel engine is a machine that has high efficiency but causes a high level of pollution. The most widely used fuel so far is fossil energy which is unrenewable energy. The fruit of the Calophyllum inophyllum plant has great potential to be developed as alternative energy for small diesel engines. In this study, the test fuel used was D100, B100, E5, E10, and E15. The small engine diesel used TG-R180 Diesel with a compression ratio of 20:1 at engine turns 1500, 1800, 2100, and 2400 rpm, and the braking load at a constant prony disc brake is 1,5 kg/cm<sup>2</sup>. The result of the study using E10 fuel can improve engine performance and can reduce the opacity of the exhaust gas. The highest power in the D100 fuel at 2100 rpm is 8,06 PS. The highest thermal efficiency of E10 fuel is 50,29%. The use of Calophyllum inophyllum biodiesel (B100) can reduce exhaust gas opacity in small diesel engines when compared to the use of D100. E10 fuel has the lowest exhaust gas opacity rate of 4,1%.</span></p>

scholarly journals Crude palm oil as a complementary fuel for power generation in Amazonia: diesel engine performance, emissions, and economic assessment

2019 ◽  
Vol 42 ◽  
pp. e43882
Author(s):  
Omar Seye ◽  
Rubem Cesar Rodrigues Souza ◽  
Ramon Eduardo Pereira Silva ◽  
Robson Leal da Silva
Keyword(s):  
Power Generation ◽  
Diesel Engine ◽  
Internal Combustion Engine ◽  
Palm Oil ◽  
Combustion Engine ◽  
Engine Performance ◽  
Internal Combustion ◽  
Nox Emissions ◽  
Crude Palm Oil ◽  
Diesel Cycle

This paper evaluates internal combustion engine performance parameters (Specific Fuel Consumption and engine torque) and pollutant emissions (O2, CO, and NOX), and also, provide an assessment of economic viability for operation in Amazonas state. Power supply to the communities in the Amazon region has as characteristics high costs for energy generation and low fare. Extractive activities include plenty of oily plant species, with potential use as biofuel for ICE (Diesel cycle) to obtain power generation together with pollutant emission reduction in comparison to fossil fuel. Experimental tests were carried out with five fuel blends (crude palm oil) and diesel, at constant angular speed (2,500 RPM – stationary regime), and four nominal engine loads (0%, 50%, 75%, and 100%) in a test bench dynamometer for an engine-driven generator for electrical-power, 4-Stroke internal combustion engine, Diesel cycle. Main conclusions are: a) SFC and torque are at the same order of magnitude for PO-00 (diesel) and PO-xx at BHP50/75/100%; b) O2 emissions show consistent decreasing behavior as BHP increases, compatible to a rich air-fuel ratio (λ > 1) and, at the same BHP condition, O2 (%) is slightly lower for higher PO-xx content; c) The CO emissions for PO-00 consistently decrease while the BHP increases, as for PO-xx those values present a non-linear behavior; at BHP75%-100_loads, CO emissions are higher for PO-20 and PO-25 in comparison to PO-00; d) The overall trend for NOX emissions is to increase, the higher the BHP; In general, NOx emissions are lower for PO-xx in comparison to PO-00, except for PO-10 which presents slightly higher values than PO-00 for all BHP range; e) Assessment on-trend costs indicates that using palm oil blends for Diesel engine-driven generators in the Amazon region is economically feasible, with an appropriate recommendation for a rated power higher than 800 kW.

Fundamental Study of Diesel Engine Performance by Implementing Oil from Tropical Kepayang Seeds (Pangium edule)

2015 ◽  
Vol 1115 ◽  
pp. 480-483
Author(s):  
Khairil ◽  
Sulaiman Thalib ◽  
Dan Turmizi
Keyword(s):  
Power Generation ◽  
Diesel Engine ◽  
Fuel Consumption ◽  
Thermal Efficiency ◽  
Engine Speed ◽  
Engine Performance ◽  
The Other ◽  
Biodiesel Fuel ◽  
Fundamental Study ◽  
Tropical Regions

Kepayang is a plant commonly found in tropical regions especially in Aceh, which has not been optimally used by local people. Based on traditional processes, kepayang seeds are potentially capable of producing oil. The objective of this research is to examined the effects of specific fuel consumption, power generation, and the thermal efficiency on engine performance by using kepayang seeds oil. The problem will be evaluated the effect of variations of biodiesel fuel (B-0, B-10 and B-20) and variation engine rotation on the diesel engine performance. In order to perform this research, the Yanmar TS-50 engine which had rotation of 2400 rpm and maximum power of 2 kW was selected. By examining the result of the research it was concluded that there were not significant effects of varied fuel consumption on the low speed (1000 rpm to 1800 rpm) engine rotation. However for engine speed more than 1800 rpm there were somewhat effects of them on engine performance. It is evident that at the engine rotation of 2000 rpm, the fuel consumption of biodiesel (B-20) and the power generated were lower than compare to biodiesel (B-10 and B-0). On the other hand, the thermal efficiency for biodiesel (B-20) was higher than compared to other biodiesel (B-10 and B-0).

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