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

ABSTRACT: 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 con

SUBMITTER: Zu XH 

PROVIDER: S-EPMC6599775 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature