© 2022 Elsevier LtdThe thermal efficiency of a CI engine is better than that of an SI, which leads to increased fuel economy. However, emissions of NOx induced by diesel fuel combustion characteristics are a key source of concern. The combustion and exhaust properties of a diesel engine operating on diesel–gasoline mixtures were examined at different fuel injection advance angles. The objective of this research is to see how injection time affects the performance of common rail DICI with two cylinders and four strokes. The fuel mixtures were made by adding gasoline to diesel fuel in increments of 5 % by volume, ranging from 0 % to 10 % by volume. The experiments were carried out at 1500 rpm with a variety of injection timings and loads. The results showed that the maximum BTE was achieved in 20 Nm torque at IT of 2° BTDC for %5 gasoline addition and the peak pressure was achieved in 30 Nm torque at injection timing of 342 CA. CO and HC emissions increase while gasoline is supplied to diesel. When closing TDC by angle, firstly decrease then increase. CO2 emissions show extreme fluctuation. But NO emission decreased for all tests by adding gasoline to diesel fuel.