PLURAL ENGINE CONNECTING TYPE MOTIVE POWER TRANSMITTING DEVICE

PROBLEM TO BE SOLVED: To inexpensively hold an output balance between plural engines by calculating deviation between operating elements of one engine and the other engine by detecting the respective operating elements of the plural engines, and correcting opening of a fuel control valve by coverting this into deviation of opening of the fuel control valve. SOLUTION: In a turboshaft engine for a multiengine helicopter, output shafts 1a and 2a of first and second engines 1 and 2 are connected to a transmission(T/M), and motive power is taken out of a T/M 3 by a propeller shaft 10. In this case, rotating speeds of the respective engines 1 and 2 are detected by rotation detectors 11 and 21, and are inputted to first and second control devices 50 and 60, and dispersion of detecting values is corrected by a correcting unit. Next, comparison operation is respectively performed on detecting rotating speed after correction and the rotating speeds of the respective engines 1 and 2, and for example, when (ΔN1 >ΔN2 ) is realized, an output signal to reduce opening of a fuel control valve 50 or an output signal to enlarge opening of a fuel control valve 60 is given, and an output balance is kept.