To cope with the depletion of fossil fuels and the threat of exhaust pollution from internal combustion engines, research finds alternative fuels. Step by step to completely replace fossil fuels that will be exhausted in the future and environmentally friendly due to internal combustion engines is an urgent and important issue. Diversify fuel sources used for internal combustion engines and environmentally friendly when using Jatropha - Diesel fuel mixture. The paper focuses on studying the

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... on studying the ability to use biodiesel derived from Jatropha seeds with the volume ratios of 5%, 10% and 15% on experimental engines. Thereby, it will analyze and evaluate the technical features and pollution levels of engines compared to pure fuels. Experimental study assessing the effect of Jatropha - Diesel mixing ratio on the emission formation compared with emissions in Vikyno EV2600 engines.