The study of electronically controlled optimized direct injection systems focuses on improving the performance of internal combustion engines through electronic management of fuel injection. Modern systems use sensors, Electronic Control Units ECUs , and actuators to precisely control the amount of injected fuel, the injection timing, and the injection pressure. This optimization makes it possible to reduce fuel consumption, limit pollutant emissions, and improve engine efficiency. The modeling of injection systems consists of representing their operation mathematically and numerically in order to analyze their behavior and predict their performance. Simulation software such as MATLAB Simulink and AMESim is commonly used to study injection dynamics, common rail pressure, and the electronic control of fuel injectors. Direct injection, electronic control, electronic fuel injection, internal combustion engine, Common Rail system, modeling, simulation, MATLAB Simulink, AMESim. 60-69 Issue-5 Volume-10 Lelo Mwanda Gloire | Lema Nkwalu Blaise | Ngakanga Mukumu Donatien | Makengo Lutimba Hubert