Numerical Simulation of Intake and Exhaust Processes in Diesel Engine with Variable Valve Actuation

Abstract

In this study, we conducted numerical cycle simulation of intake, combustion and exhaust processes in a diesel engine with variable valve actuation in order to investigate the effects of opening and closing timing of intake and exhaust valves on the gas component in a cylinder. The results show that intake air mass is governed mainly by the intake valve timing and EGR rate is governed mainly by the exhaust valve closing timing.