Abstract
In this paper the authors present a way of improving the functioning of Diesel engines using electronic management systems. The design of these systems is based on the design and test of various electronic modules used as electronic sensors on the powertrain. It is obvious that a minimum number of data must be known: engine speed, engine speed, fuel consumption, vehicle speed, gear selection. Based on these data, the appropriate actions to be taken so that the vehicle would run in optimum conditions are indicated, actions like: gear change, engine speed increase or decrease etc. A gearbox can be easily fitted with various type of switches that would indicate the gear in use but in order to use a digital electronic management system, the signal from these switches must be translated into binary code which represents the input for the electronic subsystems that analyses the information and offers “answers” to the driver of the vehicle.The mathematical algorithms, logical diagrams and electronic systems presented in these paper have been tested by means of simulation using softwares as MATLAB – SIMULINK or MULTISIM.
Keywords: fuel efficiency area, enegine management system, gear selection