A fuel supply apparatus reduces the fuel vaporization and leakage by means that the positions of vaporization and leakage and their amount in the fuel tank and the fuel pipe is detected properly in case of using a low boiling point fuel having a vapor phase in the normal temperatures and atmospheric pressures, and the fuel state is controlled based on those detected values. The carriage has the cross-section of a T-profile with plane-parallel flange and web faces wherein the bearing elements are arranged in pairs on both sides of the profile web and the profile flange. The engine, the first motorgenerator and the second motorgenerator are each operatively connected with the first planetary gear set, and the output member and the second motorgenerator are each operatively connected with the compound planetary gear arrangement. The transmission of the acquired data blocks to the computer system is a function of the frame burst ratio.