A Case Study on Impact of Ethanol-Mixed Gasoline on Exhaust Emissions of Automobile Engines

In this study, AVL-Boost software is used to simulate the impacts of using RON 92 gasoline in combination with E5, E10, E20, E85 biofuel. Specifically, the article studies the engine emissions when mixing biofuel with RON 92 gasoline at certain ratios. When testing on Toyota engine—5A, all structural parameters of the engine are kept original. Research results show that when using biofuel in combination with RON 92 gasoline, the engine’s emissions tend to be as follows: the emissions of CO and HC decrease, the concentration of NOx increases. From the above simulation study, recommendations for manufacturers as well as users can be made to change the ratio of biofuel in RON 92 gasoline when used.