Experimental study on diesel engine exhaust gas recirculation performance and optimum exhaust gas recirculation rate determination method
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...
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2019-06-01
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Online Access: | https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.181907 |
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doaj-156099a14b4540bbb8f78bfba62536ee2020-11-25T04:02:08ZengThe Royal SocietyRoyal Society Open Science2054-57032019-06-016610.1098/rsos.181907181907Experimental study on diesel engine exhaust gas recirculation performance and optimum exhaust gas recirculation rate determination methodXiang-huan ZuChuan-lei YangHe-Chun WangYin-yan WangIn 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 NOX 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, NOX 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.https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.181907marine diesel engineexhaust gas recirculationperformance evaluationoptimal exhaust gas recirculation rateoptimization algorithm |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Xiang-huan Zu Chuan-lei Yang He-Chun Wang Yin-yan Wang |
spellingShingle |
Xiang-huan Zu Chuan-lei Yang He-Chun Wang Yin-yan Wang Experimental study on diesel engine exhaust gas recirculation performance and optimum exhaust gas recirculation rate determination method Royal Society Open Science marine diesel engine exhaust gas recirculation performance evaluation optimal exhaust gas recirculation rate optimization algorithm |
author_facet |
Xiang-huan Zu Chuan-lei Yang He-Chun Wang Yin-yan Wang |
author_sort |
Xiang-huan Zu |
title |
Experimental study on diesel engine exhaust gas recirculation performance and optimum exhaust gas recirculation rate determination method |
title_short |
Experimental study on diesel engine exhaust gas recirculation performance and optimum exhaust gas recirculation rate determination method |
title_full |
Experimental study on diesel engine exhaust gas recirculation performance and optimum exhaust gas recirculation rate determination method |
title_fullStr |
Experimental study on diesel engine exhaust gas recirculation performance and optimum exhaust gas recirculation rate determination method |
title_full_unstemmed |
Experimental study on diesel engine exhaust gas recirculation performance and optimum exhaust gas recirculation rate determination method |
title_sort |
experimental study on diesel engine exhaust gas recirculation performance and optimum exhaust gas recirculation rate determination method |
publisher |
The Royal Society |
series |
Royal Society Open Science |
issn |
2054-5703 |
publishDate |
2019-06-01 |
description |
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 NOX 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, NOX 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. |
topic |
marine diesel engine exhaust gas recirculation performance evaluation optimal exhaust gas recirculation rate optimization algorithm |
url |
https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.181907 |
work_keys_str_mv |
AT xianghuanzu experimentalstudyondieselengineexhaustgasrecirculationperformanceandoptimumexhaustgasrecirculationratedeterminationmethod AT chuanleiyang experimentalstudyondieselengineexhaustgasrecirculationperformanceandoptimumexhaustgasrecirculationratedeterminationmethod AT hechunwang experimentalstudyondieselengineexhaustgasrecirculationperformanceandoptimumexhaustgasrecirculationratedeterminationmethod AT yinyanwang experimentalstudyondieselengineexhaustgasrecirculationperformanceandoptimumexhaustgasrecirculationratedeterminationmethod |
_version_ |
1724444257583890432 |