Conversion of A Traditional Gasoline Stationary Engine Into A PI Engine

Based on the simulation of the fuel injection and advance ignition maps, an electronic control system consisting of an open ECU API Tech along with the sensors of the EFI motorcycle have been installed to convert the traditional gasoline engine into the port injection engine. Simulation results show that at low engine speed, the equivalence ratio reaches stable value during the intake process but at high speed, the equivalence ratio increases slightly and reaches stable value at the end of the compression process. The indicated engine cycle work decreases with an increase of engine speed and reaches peak value at the optimal advance ignition angle which decreases slightly with the load regime. At a given load regime, the advance ignition angle increases almost linearly but the injection angle non-linearly increases according to the engine speed. The speed stability and the load-response capacity of the engine are improved with the retrofitted electronic control system