@article{paperid:1074064, author = {Zareei, JAVAD and Rohani, Abbas and Wan Mohd Faizal Bin Wan Mahmood and Shahrir Abdullah}, title = {Effect of Ignition Timing and Hydrogen Fraction in Natural Gas Blend on Performance and Exhaust Emissions in a DI Engine}, journal = {Iranian Journal of Science and Technology-Transactions of Mechanical Engineering}, year = {2019}, volume = {44}, number = {3}, month = {April}, issn = {2228-6187}, pages = {737--747}, numpages = {10}, keywords = {Direct injection; Hydrogen–natural gas; Ignition timing; Performance–emission}, }