Modeling and Control of Single Turbocharger with High Pressure Exhaust Gas Recirculation Diesel Engine

2013 ◽  
Author(s):  
Hojin Jung ◽  
Hyomin Jin ◽  
Seibum Choi ◽  
Minseok Ko
Keyword(s):  
High Pressure ◽  
Diesel Engine ◽  
Exhaust Gas Recirculation ◽  
Exhaust Gas ◽  
Modeling And Control ◽  
Gas Recirculation ◽  
And Control

Modeling and Control of Diesel Engines with a High-Pressure Exhaust Gas Recirculation System

2014 ◽  
Vol 47 (3) ◽  
pp. 3006-3011 ◽  
Author(s):  
Sergey Samokhin ◽  
Teemu Sarjovaara ◽  
Kai Zenger ◽  
Martti Larmi
Keyword(s):  
High Pressure ◽  
Diesel Engines ◽  
Exhaust Gas Recirculation ◽  
Exhaust Gas ◽  
Modeling And Control ◽  
Recirculation System ◽  
Gas Recirculation ◽  
And Control

scholarly journals Experimental study on diesel engine exhaust gas recirculation performance and optimum exhaust gas recirculation rate determination method

2019 ◽  
Vol 6 (6) ◽  
pp. 181907 ◽  
Author(s):  
Xiang-huan Zu ◽  
Chuan-lei Yang ◽  
He-Chun Wang ◽  
Yin-yan Wang
Keyword(s):  
Decision Making ◽  
High Pressure ◽  
Diesel Engine ◽  
High Speed ◽  
Performance Test ◽  
Exhaust Gas Recirculation ◽  
Venturi Tube ◽  
Pressure Curve ◽  
Exhaust Gas ◽  
Gas Recirculation

In order to study the exhaust gas recirculation (EGR) performance of marine diesel engines, a venturi high-pressure EGR device was established to overcome the exhaust gas reflow problem based on a certain type of turbocharged diesel engine. The EGR performance test is accomplished and an optimal EGR decision-making optimization method based on grey correlation coefficient modified is proposed. The results show that the venturi tube EGR can basically meet the injection requirements of high-pressure exhaust gas and achieve good results. Through the venturi tube EGR, the NO X emissions reduce significantly with the maximum drop of 30.6%. The explosive pressure in cylinder reduces with the EGR rate increases and the cylinder pressure curve shows a single peak at low-speed conditions and double peaks at high-speed condition. However, the fuel consumption rate, NO X and smoke have been negatively affected. Due to small samples, the traditional evaluation method is difficult to determine the optimal EGR rate reasonably, while the proposed method can effectively solve this problem. It can weaken the shortcomings of subjective judgement and greatly improve the rationality of decision-making results.

Impacts of the exhaust gas recirculation (EGR) combined with the regeneration mode in a compression ignition diesel engine operating at cold conditions

2021 ◽  
pp. 146808742110139
Author(s):  
José Galindo ◽  
Vicente Dolz ◽  
Javier Monsalve-Serrano ◽  
Miguel Angel Bernal ◽  
Laurent Odillard
Keyword(s):  
High Pressure ◽  
Diesel Engine ◽  
Nitrogen Oxides ◽  
Internal Combustion Engines ◽  
Exhaust Gas Recirculation ◽  
Pollutant Emissions ◽  
Particulate Filter ◽  
Injection Timing ◽  
Exhaust Gas ◽  
Gas Recirculation

Internal combustion engines working at cold conditions lead to the production of excessive pollutant emissions levels. The use of the exhaust gas recirculation could be necessary to reduce the nitrogen oxides emissions, even at these conditions. This paper evaluates the impact of using the high-pressure exhaust gas recirculation strategy while the diesel particulate filter is under active regeneration mode on a Euro 6 turbocharged diesel engine running at low ambient temperature (−7°C). This strategy is evaluated under 40 h of operation, 20 of them using the two systems in combination. The results show that the activation of the high-pressure exhaust gas recirculation during the particulate filter regeneration process leads to a 50% nitrogen oxides emissions reduction with respect to a reference case without exhaust gas recirculation. Moreover, the modification of some engine parameters compared to the base calibration, as the exhaust gas recirculation rate, the main fuel injection timing and the post injection quantity, allows to optimize this strategy by reducing the carbon monoxide emissions up to 60%. Regarding the hydrocarbons emissions and fuel consumption, a small advantage could be observed using this strategy. However, the activation of the high-pressure exhaust gas recirculation at low temperatures can produce fouling deposits and condensation on the engine components (valve, cooler, intake manifold, etc.) and can contribute to reach saturation conditions on the particulate filter. For these reasons, the regeneration efficiency is followed during the experiments through the filter status, concluding that the use of low high-pressure exhaust gas recirculation rates in combination with the regeneration mode also allows to clean the soot particles of the particulate filter. These soot depositions are visualized and presented at the end of this work with a brief analysis of the soot characteristics and a quantitative estimation of the total soot volume produced during the experimental campaign.

scholarly journals Combustion, performance and emission analysis of a diesel engine fueled with methyl esters of Jatropha and fish oil with exhaust gas recirculation

2019 ◽  
Vol 160 ◽  
pp. 404-411 ◽  
Author(s):  
M. Saravana Kumar ◽  
M. Prabhahar ◽  
S. Sendilvelan ◽  
Sanjay Singh ◽  
R. Venkatesh ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Fish Oil ◽  
Methyl Esters ◽  
Exhaust Gas Recirculation ◽  
Exhaust Gas ◽  
Emission Analysis ◽  
Performance And Emission ◽  
Combustion Performance ◽  
Gas Recirculation
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