Increase of Performance and Smoke Emission by Increasing ERG Rate in IDI Diesel Engine using Jatropha Oil and Diesel Fuel Blends - Suryo Utomo, Syaiful MSK Tony; Mechanical Engineering Department of Diponegoro University Jl. Prof. Sudarto, SH, Tembalang, Semarang 50275 (Institute of Research and Community Outreach - Petra Christian University, 2014)