relation: https://khub.utp.edu.my/scholars/12273/ title: Performance of hydrogen direct injection engine creator: Abdul Aziz, A.R. creator: Adlan Abdullah, M. creator: Firmansyah creator: Abidin, E.Z.Z. description: Hydrogenâ��s high flammability, low ignition energy, clean burning, and high flame speed are attractive advantages of using internal combustion engines to attain high performance and efficiency as well as achieving â��realâ�� clean emission with only water and carbon dioxide as exhaust. To overcome volumetric efficiency loss, high NOx emissions and abnormal combustion, the influence of airâ��fuel ratio is studied. Optimization of the airâ��fuel ratio effect and understanding of the combustion processes are actively being studied in the automotive industry and research institutions. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2019. publisher: Springer Verlag date: 2019 type: Article type: PeerReviewed identifier: Abdul Aziz, A.R. and Adlan Abdullah, M. and Firmansyah and Abidin, E.Z.Z. (2019) Performance of hydrogen direct injection engine. SpringerBriefs in Applied Sciences and Technology. pp. 21-36. ISSN 2191530X relation: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85056181600&doi=10.1007%2f978-981-13-2968-5_2&partnerID=40&md5=71eda412ad054825c122adf6f0f33b61 relation: 10.1007/978-981-13-2968-5₂ identifier: 10.1007/978-981-13-2968-5₂