The Effect of Injection Parameters on Fuel Consumption and Emissions in A PFI Small Spark Ignition Engine

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DEMİRCİ A., Doğan H. E., CİHAN Ö. C., Kutlar O. A.

International Journal of Automotive Science and Technology, vol.5, no.2, pp.157-165, 2021 (Peer-Reviewed Journal) identifier


The fastening of emission standards and the desire to lower fuel consumption decide the direction of research on internal combustion engines. Mixture formation affects fuel consumption and harmful emissions. One of the common problems in spark-ignition engines with liquid fuels is the evaporation of fuel for mixing with air because of fuel stored in liquid form. The intake valve is hot in port fuel injection engines. The fuel is directed to the hot surface of the intake valve so it evaporates. The injection pressure, injection time, injection angle and the number of injections in one cycle affect mixture formation [1–7].