PROBLEM TO BE SOLVED: To provide a combine harvester which includes an auger unloading control means for controlling operations for lifting, lowering, or revolving a grain unloading auger and the operations of an actuator for operating a grain unloading clutch, and a portable radio operation device for transmitting radio signals to a receiving antenna connected to the auger unloading control means, wherein a so-called keyless entry system using an existing portable radio operation device is formed at a low cost so that an engine can be started up, only when an operator or a peripheral worker for the combine harvester carries the portable radio operation device at a place close to the machine frame.SOLUTION: The combine harvester includes an engine start controller 31d which can restrain the start of the engine E, when the portable radio operation device 33 for transmitting radio signals to a transmitting or receiving antennas 32, 32' connected to the auger unloading control means 31 is placed in areas Y, Y' in which the communication with the transmitting or receiving antennas 32, 32' is restrained.COPYRIGHT: (C)2010,JPO&INPIT【課題】穀粒排出オーガの昇降や旋回動作、及び穀粒排出クラッチを作動させるアクチュエータを動作制御するオーガ排出制御手段と、該オーガ排出制御手段に接続する受信アンテナに無線信号を送信する携帯式無線操作器を備えたコンバインにおいて、前記携帯式無線操作器をコンバインのオペレータや周辺作業者が機体の近くで携行している時のみエンジンを始動させることができるように、既存の携帯式無線操作器を利用した所謂キーレスエントリーシステムを安価に構成する．【解決手段】オーガ排出制御手段３１に接続した送受信アンテナ３２，３２´に無線信号を送信する携帯式無線操作器３３が、前記送受信アンテナ３２，３２´との交信不能域Ｙ，Ｙ´にある時、エンジンＥの始動を牽制し得るエンジン始動制御部３１ｄを設けた。【選択図】図５
