P. A. Lakshminarayanan studied at the Indian Institute of Technology (IIT), Madras for his B.Tech., M.S., and Ph.D. degrees. He worked at the Loughborough University of Technology and Kirloskar Oil Engines Ltd. for 25 years , before moving to Ashok Leyland in 2002 to head the Engine R&D. From 2011 till 2019, he was the CTO, and the Technical Adviser at Simpson and Co. Ltd. He is now an adjunct professor at IIT Kanpur. He has developed more than eight diesel and CNG engine platforms and 150 engine types commercially successful for efficiency and cost-effectiveness. Two engine designs received prizes from the Institute of Directors (India). Twelve ideas were patented during the development of engines over 40 years. He has authored 54 research papers in journals and conferences of international repute. Four of them received prizes for integrity and quality of contents from the SAE (Arch Colwell Award), Combustion Society (India), AVL (Graz), and AVL (India) in 1983,1993, 2005, and 2011. He is elected to the fellowships of SAE (2009), INAE (2013), and ISEES (2018). Prof. Avinash Kumar Agarwal joined IIT Kanpur in 2001. He worked at the Engine Research Center, UW@Madison, the USA as a Post-Doctoral Fellow (1999 – 2001). His interests are IC engines, combustion, alternate and conventional fuels, lubricating oil tribology, optical diagnostics, laser ignition, HCCI, emissions, and particulate control, 1D and 3D Simulations of engine processes, and large-bore engines. Prof. Agarwal has published 435+ peer-reviewed international journal and conference papers, 70 edited books, 92 books chapters, and 12200+ Scopus and 19000+ Google Scholar citations. He is the associate principal editor of FUEL. He has edited “Handbook of Combustion” (5 Volumes; 3168 pages), published by Wiley VCH, Germany. Prof. Agarwal is a Fellow of SAE (2012), Fellow of ASME (2013), Fellow of ISEES (2015), Fellow of INAE (2015), Fellow of NASI (2018), Fellow ofRoyal Society of Chemistry (2018), and a Fellow of American Association of Advancement in Science (2020). He is the recipient of several prestigious awards such as Clarivate Analytics India Citation Award-2017 in Engineering and Technology, NASI-Reliance Industries Platinum Jubilee Award-2012; INAE Silver Jubilee Young Engineer Award-2012; Dr. C. V. Raman Young Teachers Award: 2011; SAE Ralph R. Teetor Educational Award -2008; INSA Young Scientist Award-2007; UICT Young Scientist Award-2007; INAE Young Engineer Award-2005. Prof. Agarwal received Prestigious CSIR Shanti Swarup Bhatnagar Award-2016 in Engineering Sciences. Prof. Agarwal is conferred upon Sir J C Bose National Fellowship (2019) by SERB for his outstanding contributions. Prof. Agarwal was a highly cited researcher (2018) and was in the top ten HCR from India among 4000 HCR researchers globally in 22 fields of inquiry.