<；P>；PROBLEM TO BE SOLVED: To provide a combine harvester contributing to conservation of living environment by reduction of fuel consumption, reduction of noise generated from an engine and cleaning of atmosphere by exhaust gas reduction, improving efficiency of grain discharging work and improving total efficiency of harvesting work. <；P>；SOLUTION: The combine harvester is provided with a transmission switching device (69) to switch driving power of the engine (68) inputted through a discharge clutch (95) and driving power of an electric motor (83) inputted without interposing the discharge clutch (95) and output the driving power of the power source having higher rotational speed to a grain discharging device (5a), and a controller (111) to automatically stop the engine (68) when drive of the grain discharging device (5a) by driving force of the electric motor (83) is started. Also, the controller (111), which automatically starts the engine (68) when stopping the drive of the grain discharging device (5a) by the driving power of the electric motor (83), is provided. <；P>；COPYRIGHT: (C)2010,JPO&INPIT
