Open AccessStudy on Emission Characteristics of Hydrogen Direct-Injection Gasoline Engine
Author(s) -
Jinguang Liang
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1213/5/052101
Subject(s) - hydrogen , gasoline , fraction (chemistry) , petrol engine , lean burn , secondary air injection , chemistry , materials science , analytical chemistry (journal) , nox , combustion , waste management , environmental chemistry , engineering , organic chemistry
Experiments have been carried out on a hydrogen direct-injection and gasoline port-injection engine at the conditions of locally rich hydrogen and lean-burn mode in order to study the effect of hydrogen fraction and air-fuel ratio on the engine’s emissions. The experiments results demonstrated that when the excess-air ratio was increased from 1 to 1.8, NO x and CO emissions were at least decreased by 91% and 95% respectively and HC emission was increased by 56%. Almost 23% reduction was observed in HC emission when hydrogen fraction changed from 3.9% to 10.5%, whereas the NO x emission has almost been tripled and CO emission is found to be less affected with hydrogen fraction.