scholarly journals Evaluation of High Speed Diesel Engine Performance and Charecteristics of its Emissions with Carbon Nanotubes Added Ethanol-Diesel Blends

2017 ◽  
Vol 7 (4) ◽  
pp. 439-446
Author(s):  
N. Venkatesh et al., N. Venkatesh et al., ◽  
Keyword(s):  
Carbon Nanotubes ◽  
Diesel Engine ◽  
High Speed ◽  
Engine Performance ◽  
High Speed Diesel

Research on the Compression-Ignition Engine and its Fuels

1950 ◽  
Vol 162 (1) ◽  
pp. 13-19 ◽  
Author(s):  
P. E. B. Vaile
Keyword(s):  
Diesel Engine ◽  
High Speed ◽  
Engine Performance ◽  
Lubricating Oil ◽  
Future Research ◽  
Compression Ignition Engine ◽  
Short Account ◽  
Beneficial Effects ◽  
High Speed Diesel ◽  
Fuel Characteristics

This paper, an abstract of the original, is intended to provide information concerning the present status of Diesel fuel research. The paper is divided into two parts, the first of which concerns the types of fuel in use, describing briefly their sources and properties. A short account is also given of the existing fuel situation and how this may influence future research. Part II deals with the effects of fuel characteristics on engine performance, wear, and fouling. The methods of overcoming any deleterious effects caused by the fuel are discussed, and particular reference is made to the beneficial effects of lubricating oil additives. It must be emphasized that most of the work described refers to the high-speed Diesel engine, owing to the unsuitability of large units for laboratory testing. However, this is beneficial since the high-speed Diesel is most sensitive to fuel characteristics, and it serves to disclose the majority of defects that can arise in a Diesel engine.

scholarly journals Features of the working process of high-speed diesel engines

2021 ◽  
Vol 264 ◽  
pp. 04021
Author(s):  
Sarvar Kadirov ◽  
Madamin Aripdjanov ◽  
Obidjon Ergashev ◽  
Ravshan Iskandarov
Keyword(s):  
Diesel Engine ◽  
Diesel Engines ◽  
High Speed ◽  
Engine Performance ◽  
Injection Pressure ◽  
Working Process ◽  
High Speed Diesel ◽  
Wide Range ◽  
History Of ◽  
Main Factors

This article discusses the main history of the creation of high-speed short-stroke diesel engines and an assessment of the main factors that most significantly affect the working process of a diesel engine. When developing a new design of a high-speed diesel engine, it is necessary to pay special attention to the following factors: the intensity of the air charge, injection pressure parameters, the shape of the combustion chamber and the choice of the best option. Research carried out with a 7 x 0.15 mm nozzle in a wide range of speed changes (n = 1000 + 2800 min-1) shows that it is possible to find a position of the widened valve at which optimal results are obtained at medium and high rotational speeds, and on small - engine performance will deteriorate slightly.

scholarly journals USE OF DIESEL MIXED WITH ETHANOL AND ETHYL ACETATE FOR ALTERNATIVE FUEL IN A HIGH-SPEED DIESEL ENGINE

2021 ◽  
Vol 11 (2) ◽  
pp. 25-36
Author(s):  
Mattana Santasnachok ◽  
Ekkachai Sutheerasak ◽  
Charoen Chinwanitcharoen ◽  
Wirogana Ruengphrathuengsuka ◽  
Sathaporn Chuepeng
Keyword(s):  
Carbon Monoxide ◽  
Diesel Engine ◽  
Ethyl Acetate ◽  
High Speed ◽  
Engine Performance ◽  
Complete Combustion ◽  
Performance And Emission ◽  
Black Smoke ◽  
Oxygenated Additives ◽  
High Speed Diesel

Particulate matters especially particles with less than 2.5 micrometers (PM2.5) are the main cause of severe air pollution problem in Thailand that lead to the mortality risk in cardiovascular disease. Exhaust gas emissions specifically carbon monoxide and black smoke from diesel engines are the essential sources in generating significant amounts of PM2.5. Improving diesel properties by mixing oxygenated additives is one of the alternatives in reducing this pollutant. The main objective of this research is to investigate the performance and emission of a high-speed diesel engine at 3,000 rpm and different loads operated with diesel mixed with 5 to 20% ethanol and 5% ethyl acetate. The results of engine test at 80% load using diesel mixed with 5% of ethanol and ethyl acetate showed a few decreases in fuel properties and engine performance compared with diesel. The release of black smoke was also decreased to 14%. Increasing the mixture of ethanol to more than 5% has led to the decrease in engine performance continuously. The diesel mixed with ethanol at 20% and ethyl acetate at 5% has reduced the carbon monoxide and black smoke to 0.012%vol and 31.53% respectively and accrued the carbon dioxide at 1.25%vol. This is because the diesel mixed with ethanol and ethyl acetate increased the oxygen level to perform complete combustion as compared with diesel. However, the temperature of these exhaust gases was raised to 55oC

scholarly journals Optimisation of the 2.2 liter high speed diesel engine for proposed Bharat stage 5 emission norms in India

2014 ◽  
Vol 18 (1) ◽  
pp. 169-178 ◽  
Author(s):  
Pundlik Ghodk ◽  
Jiwak Suryawanshi
Keyword(s):  
Diesel Engine ◽  
High Speed ◽  
Direct Injection ◽  
Engine Performance ◽  
Piston Crown ◽  
High Speed Diesel ◽  
Crown Shape ◽  
Performance And Emissions ◽  
Egr Cooler ◽  
Engine Emission

Direct injection diesel engine combustion system offers improvements in performance and fuel economy benefits. 4 valves per cylinder, turbocharged and intercooled diesel engine became trustworthy for automobile application. Electronic diesel control, use of common rail with increase in injection pressures, and flexibility in injection control has changed the image of diesel engine. Evolutions in piston crown shape, intake ports with different swirl level helped to enhance mixing of air and fuel for better performance and emissions. In this describe the work done on 4 cylinder diesel engine, upgraded to BS5 (Bharat stage 5) emission norms with 20% power increase. A systematic approach of engine development was fallowed. Engine performance prediction was done using AVL Boost software. Boost Model was validated with existing engine cylinder pressure. Combustion parameters have been varied to predict higher power. Vehicle model has been build using AVL cruise software and used to obtain steady state load- speed points. Engine emission development has been done on engine test bench. Typical hardware like piston crown, turbocharger, EGR system with EGR cooler and various combustion parameters were tested and optimized. Suitable after-treatment system was selected optimized for precious metal loading reach Bharat stage 5 emissions.

scholarly journals Influence of Ultra Injection Pressure with Dynamic Injection Timing on CRDI Engine Performance Using Simarouba Biodiesel Blends

2018 ◽  
Vol 15 (4) ◽  
pp. 5748-5759
Author(s):  
Srinath Pai ◽  
Abdul Sharief ◽  
Shiva Kumar
Keyword(s):  
Diesel Engine ◽  
High Speed ◽  
Direct Injection ◽  
Engine Performance ◽  
Injection Pressure ◽  
Injection Timing ◽  
Brake Thermal Efficiency ◽  
High Speed Diesel ◽  
Performance And Emissions ◽  
Smoke Opacity

A single cylinder diesel engine upgraded to operate Common Rail Direct Injection (CRDI) system and employed in this investigation. Tests were conducted on this engine using High-Speed diesel (HSD) and Simarouba biodiesel (SOME) blends to determine the influence of Injection Pressure (IP) and Injection Timing (IT) on the performance and emissions. Four unique IP of 400 bar to 1000 bar, in steps of 200 bar and four differing ITs of 10°, 13°, 15° and 18° before Top Dead Center (bTDC) combinations were attempted for the 25% to full load. Compression Ratio (CR) of 16.5 and Engine speed of 1500 RPM was kept constant during all trails. Critical performance parameter like Brake Thermal Efficiency (BTE) and Brake Specific Fuel Consumption (BSFC) were analyzed, primary emission parameters of the diesel engine The NOx and Smoke opacity were recorded. Finally, the outcomes of each combination were discussed.

scholarly journals Prognostic Assessment of the Performance Parameters for the Industrial Diesel Engines Operated with Microalgae Oil

2021 ◽  
Vol 13 (11) ◽  
pp. 6482
Author(s):  
Sergejus Lebedevas ◽  
Laurencas Raslavičius
Keyword(s):  
Energy Efficiency ◽  
Diesel Engine ◽  
High Speed ◽  
Performance Parameters ◽  
Prognostic Assessment ◽  
High Speed Diesel ◽  
Microalgae Oil ◽  
The Difference ◽  
Smoke Opacity ◽  
Efficiency Indicators

A study conducted on the high-speed diesel engine (bore/stroke: 79.5/95.5 mm; 66 kW) running with microalgae oil (MAO100) and diesel fuel (D100) showed that, based on Wibe parameters (m and φz), the difference in numerical values of combustion characteristics was ~10% and, in turn, resulted in close energy efficiency indicators (ηi) for both fuels and the possibility to enhance the NOx-smoke opacity trade-off. A comparative analysis by mathematical modeling of energy and traction characteristics for the universal multi-purpose diesel engine CAT 3512B HB-SC (1200 kW, 1800 min−1) confirmed the earlier assumption: at the regimes of external speed characteristics, the difference in Pme and ηi for MAO100 and D100 did not exceeded 0.7–2.0% and 2–4%, respectively. With the refinement and development of the interim concept, the model led to the prognostic evaluation of the suitability of MAO100 as fuel for the FPT Industrial Cursor 13 engine (353 kW, 6-cylinders, common-rail) family. For the selected value of the indicated efficiency ηi = 0.48–0.49, two different combinations of φz and m parameters (φz = 60–70 degCA, m = 0.5 and φz = 60 degCA, m = 1) may be practically realized to achieve the desirable level of maximum combustion pressure Pmax = 130–150 bar (at α~2.0). When switching from diesel to MAO100, it is expected that the ηi will drop by 2–3%, however, an existing reserve in Pmax that comprises 5–7% will open up room for further optimization of energy efficiency and emission indicators.

Characteristics of injection of diesel fuel, rapeseed oil and their mixtures in diesel engines of various types

2021 ◽  
pp. 167-178
Author(s):  
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Diesel Engines ◽  
Rapeseed Oil ◽  
High Speed ◽  
Fuel Injection ◽  
Experimental Studies ◽  
Fuel Injector ◽  
High Speed Diesel ◽  
Engine Type

The necessity of adapting diesel engines to work on vegetable oils is justified. The possibility of using rapeseed oil and its mixtures with petroleum diesel fuel as motor fuels is considered. Experimental studies of fuel injection of small high-speed diesel engine type MD-6 (1 Ch 8,0/7,5)when using diesel oil and rapeseed oil and computational studies of auto-tractor diesel engine type D-245.12 (1 ChN 11/12,5), working on blends of petroleum diesel fuel and rapeseed oil. When switching autotractor diesel engine from diesel fuel to rapeseed oil in the full-fuel mode, the mass cycle fuel supply increased by 12 %, and in the small-size high-speed diesel engine – by about 27 %. From the point of view of the flow of the working process of these diesel engines, changes in other parameters of the fuel injection process are less significant. Keywords diesel engine; petroleum diesel fuel; vegetable oil; rapeseed oil; high pressure fuel pump; fuel injector; sprayer

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