Power system and power switch structure for a motorcycle with compounded power

The present invention relates to power system and power switch structure for a motorcycle with compounded power, which comprises a central controller connecting to an accelerator subsystem, an engine power subsystem, an electronic power subsystem, a driving signal output subsystem and a charging subsystem. The output powers of the engine power subsystem and the electronic power subsystem are transformed to signals and transmitted to the central controller so as to form a part of instantaneous information. After the driving signal output subsystem is received the output information from the engine power subsystem and the electric power subsystem, it will transmit the information to center controller. Furthermore, the driving mode includes compound mode and engine mode, which using the surplus of electricity as a switch condition, so when the electricity is plentiful, it will be applied as mode 70, however, when the electricity is insufficient, it will be applied as mode 80 and charge the battery. Therefore, this invention can reduce fuel consuming, and reducing air pollution.