Abstract: At a low part load, and at idling of a vehicle machinery it is difficult to obtain a good fuel economy and acceptable emission rates. The amount of work for driving the compressor and the auxiliary apparatuses is considerable in a gas turbine, and in view of the conditions mentioned the combustor of the gas turbine is provided with two burners, of which one is dimensioned for a fuel quantity which merely corresponds to "spare-flame" operation. An auxiliary motor means is included in the machinery and keeps, together with the "spare-flame" operation. An auxiliary motor means is included in the machinery and keeps, together with the "spare-flame" burner, the main rotor of the gas turbine running at idling and part-load. The auxiliary motor may be an electric motor, a pressure fluid motor, or a combustion engine. The compressor is provided with means for throttling the flow of air, and a control device operates this throttling means so it is effective during "spare-flame" operation.

Abstract: A gas turbine plant including one or more gas turbine units comprises a base member formed like a box having square end walls and four side walls joined thereto. An output shaft is journalled centrally in the end walls and carries a gear wheel, the diameter of which is slightly less than the side dimensions of the end walls. The rotor shaft of the gas turbine is, at least partly, enclosed in a housing component having a base portion adapted to be mounted upon arbitrary side wall of the base member. Two gear wheels are mounted upon a lay shaft in the housing. One of these gear wheels meshes with a gear wheel upon the rotor shaft, while the other gear wheel, when the unit is mounted upon the base member, meshes with the gear wheel enclosed therein.