Optimization of the lookup table for a single-cylinder internal combustion engine

Employment of optimized fuel injected motorcycle rather than carbureted ones is a key to reduce pollution. This article studies a 150-cc fuel injected motorcycle, where its engine management unit (ECU) data are optimized, using genetic algorithm and the least squares method, in order to operate at the optimal engine operating points. The ECE40 driving cycle is employed, and the output torque and CO emissions are studied as the objective functions during the optimization procedure. The motorcycle model and the controller models are presented. Simulation results as well as the experimental ones show a reduction of CO by about 20%, CO2 by 5%, HC by 19%, and NOx by about 1%. Moreover, the output torque is increased by about 12%. According to the emission test results, the motorcycle is able to pass the Euro-3 standard. The proposed optimization technique provides a solution to have an optimal ECU for a specific application.