Dual Fuel Turbocharged Engine Operated with Exhaust Gas Recirculation

2016 ◽  
Vol 34 (1) ◽  
pp. 21-27
Author(s):  
H.-W. Wu ◽  
T.-Z. Hsu ◽  
W.-H. Lai
Keyword(s):  
Diesel Engine ◽  
Consumption Rate ◽  
Direct Injection ◽  
Engine Performance ◽  
Exhaust Gas Recirculation ◽  
Dual Fuel ◽  
Exhaust Gas ◽  
Turbocharged Diesel Engine ◽  
Performance And Emissions ◽  
Gas Recirculation

AbstractWith good combustion characteristics, hydrogen has been developing as a clean alternative fuel of engines. This study is to develop a diesel/hydrogen dual fuel engine. The hydrogen was added at inlet port in a 4-cylinder direct injection turbocharged diesel engine with an EGR (Exhaust Gas Recirculation) system to investigate engine performance and exhaust pollutant. The measured items are composed of the gas pressure of cylinder, crank angle, consumption rate of diesel, consumption rate of hydrogen, air flow rate, emissions (HC, CO2, NOX, and Smoke), and so on. The authors analyze how the addition of hydrogen with EGR system influences the engine performance and emissions. The diesel/hydrogen dual fuel turbocharged engine can increase the brake thermal efficiency with a greater decrease in emissions compared with the turbocharged diesel engine. Furthermore, the authors little altered the engine structure to get the positive effect of energy saving and pollutant decreasing.

scholarly journals Biodiesel as an Alternate Fuel in a Diesel Engine with the Cooled Exhaust Gas Recirculation–A Measure to Reduce Harmful Emissions

2011 ◽  
pp. 136-141
Author(s):  
S. Adinarayana ◽  
YMC Sekhar ◽  
M. Anil Prakash ◽  
BVA Rao
Keyword(s):  
Diesel Engine ◽  
Engine Performance ◽  
Exhaust Gas Recirculation ◽  
Exhaust Gas ◽  
Oxygenated Fuel ◽  
Harmful Emissions ◽  
Performance And Emissions ◽  
Di Diesel Engine ◽  
Engine Performance And Emissions ◽  
Gas Recirculation

Biodiesels reduce the emissions like HC, CO and particulate matter to minimum possible extent. But the NOx emissions increase because of the reason that the biodiesel is an oxygenated fuel. To contain this particular emission which is responsible for the human health degradation, acid rain, smog creation etc., the Exhaust Gas Recirculation (EGR) technique is resorted to. In this paper, a laboratory based DI diesel engine is run with neat biodiesel (Jatropha Methyl Ester) and cooled EGR which replaces a part of incoming air during suction. Various percentages (viz.0%, 7%, and 14%) of EGR were practiced to investigate the effect on the engine performance and tail pipe emissions. EGR dilutes the charge in the cylinder and thus reduces the peak combustion temperatures. Lower combustion temperatures decrease the formation of NOx with the marginal penalty of increase in other emissions. A comparison was made with the implementation of neat diesel and EGR application to consolidate the performance differences emerge in these cases. 7% EGR is proved to be the best percentage by considering both engine performance and emissions.

scholarly journals Influence of exhaust gas recirculation on performance and emissions of diesel engine Vikyno RV125-2

2015 ◽  
Vol 18 (4) ◽  
pp. 48-54
Author(s):  
Khai Le Duy Nguyen ◽  
Tri Minh Nguyen
Keyword(s):  
Diesel Engine ◽  
Direct Injection ◽  
Three Dimensional ◽  
Exhaust Gas Recirculation ◽  
Exhaust Gas ◽  
Research Results ◽  
Direct Injection Diesel Engine ◽  
Performance And Emissions ◽  
Gas Recirculation ◽  
Engine Power

This paper presents a research on the influence of exhaust gas recirculation (EGR) on performance and emissions of direct injection diesel engine VIKYNO RV125-2 using three-dimensional CFD code KIVA-3V. In this study, the engine runs at 2400 rpm, 80% nominal load, and EGR concentration is changed from 0% to 40%. Research results indicate that with 20% EGR, the engine power is reduced 3,16%, while the concentrations of both NOx and soot are reduced 12,11% and 67,1%, respectively.

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