Possibilities of changes of parameters of the driver to engine Fiat 1.3 JTD performances

The aim is to present possible ways of interference in the factory engine control program and the impact of what you want changes made changes on engine performance. This objective has been completed on the basis of the programme steering engine Fiat 1.3 MultiJet engine compartment is fitted on the chassis in the Faculty at Motor Vehicles Exploitation. Methods of reading logic. The activity and the construction of an electronic control circuit. Discusses the operation and construction of an electronic control. Shows the selected map control for driver, sample modifications and their impact on power, torque and the composition of the gases. The main assumption during modification of the factory driver software controlling Fiat 1.3 JTD engine was to increase torque within the low range of rotational speeds. The range of modifications had the task of evaluating the software methodology, changes in driver parameters and they effect on engine performance only. The obtained results are evidence of the correctness of modifications carried out within injection dose and supercharging pressure. Hexadecimal notation values and decimal notation values corresponding to them, modified bitmap for pilot injection dose, original bitmap values for pilot injection dose time, modified bitmap values for injection dose time, modified bitmap for main injection dose, original bitmap for supercharging pressure, original bitmap for supercharging pressure delimiter, comparison of external characteristic curve are presented in the paper.