Abstract
The computer modeling of the engine cycles at direct injection spark ignition engines proposed by the authors is realized by executing a computer program for determining the variation of the threedimensional and bi-dimensional parameters with the following sub-programs: program for calculating the SIE (dependence according to n and λ at to=-35...+45ºC and po=1·102 kPa); program for calculating the SIE (dependence according to n and to at λ =1 and po=1·102 kPa);program for calculating the SIE cycle with gasoline injection. A study was realized for the calculus of the pressure inside the intake gallery pga and the intake pressure pa.
Keywords: pressure regulator, valve, pulverization, duration of injection