ENGINE STARTING DEVICE

The invention relates to an engine starting device. In the engine starting device (1), a starter control unit (4) is configured to, upon command to start the engine (2), put a starter (3) in a drive ON state to begin cranking of the engine (2) and then put the starter (3) in a drive OFF state at a predetermined timing. The starter control unit (4) is configured to, when acceleration is requested within a predetermined time period (Ta) from the command to start the engine (2), keep the starter (3) in the drive ON state even after the time (Ty) when the starter (3) would be put in the drive OFFstate without the acceleration request within the predetermined time period (Ta), and drive the starter (3) to torque-assist the engine (2), thereby performing an assist mode in which both the engine(2) and the starter (3) serve as drive sources for driving a vehicle. 本发明涉及发动机起动设备。在发动机起动设备(1)中，起动器控制单元(4)被配置成：当命令起动发动机(2)时，将起动器(3)置于驱动器ON状态以开始发动机(2)的曲柄起动，然后在预定时刻将起动器(3)置于驱动器OFF状态。起动器控制单元(4)被配置成：当在从起动发动机(2)的命令起的预定时间段(Ta)内请求加速时