IMPROVING THE WORKING PROCESS OF A DIESEL ENGINE BY INCREASING THE INJECTION PRESSURE UP TO 300 MPA
Abstract
The fuel injection pressure is one of the main factors affecting the performance of a diesel engine. The article presents the results obtained by modeling the working process of the 1CHN12/13 engine using the AVL FIRE software package to evaluate the effect of increasing the pressure in the fuel accumulator up to 300 MPa. The results show that an increase in cancer increases the intensity of the combustion process. With an increase in the pressure of the cancer from 150 to 300 MPa, the content of nitrogen oxides NOx decreased by 23.2%, and soot-by 58.1%. However, NOx does not reach the level corresponding to Euro 6-0.4 g/(kW·h). Therefore, it is necessary to use exhaust gas recirculation (EGR) in combination with ultra-high injection pressure. When applying the degree of recirculation Rc = 27%, NOx emissions comply with Euro 6 standards. The soot content decreased by 55.6%, NOx-by 93%. However, the brake fuel consumption increases by 4.9% without EGR and by 4.7% at Rc = 27% and the indicator power decreased by 4.3%.
About the Authors
Sofya M. Kalinina
MADI
Russian Federation
Russian Federation
undergraduate
Selsabila Abdessemed
MADI
Russian Federation
Russian Federation
undergraduate
Andrey Y. Dunin
MADI
Russian Federation
Russian Federation
Ph. D., associate professor
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