Volume 10: Sustainable Energy Solutions for Changing the World: Part II

Effects of the injection direction of pilot fuel on combustion and emissions under two-stroke HPDI dual fuel marine engine-like conditions Arash Nemati , Jiun Cai Ong, Jens Honore Walther

Abstract

A numerical study on effects of the injection direction of the pilot diesel fuel on combustion and emissions under two-stroke dual-fuel marine engine-like conditions is presented in this paper. It is found that the injection direction of the pilot fuel has significant effects on the methane start of combustion as well as flame propagation direction which leads to different heat transfer trends to combustion chamber walls and flame-wall interaction. Furthermore, the injection direction of the pilot fuel changes the methane combustion intensity which leads to different trends for emission formation.

Keywords Marine engine, dual fuel, CFD, high pressure direct injection, injection direction