A. S. Ramadhas, S. Jayaraj, and C. Muraleedharan Biodiesel is an alternative fuel to diesel derived from vegetable oils by transesterification process. It can be used in diesel engines with/without any modification in the engine system. Biodiesel engines emit slightly higher NO emissions, as compared to that of diesel engines, as higher cylinder t ... [J. Renewable Sustainable Energy 2, 013109 (2010)] published Fri Feb 5, 2010.