Patent ID: 7784281
Filing Date: 2010-08-31
Classification: B63H,F02D

Abstract:
1. A propulsion apparatus for a plurality of engines, comprising: propeller shafts having a screw propeller on each shaft end that are individually connected to a plurality of engines; a single regulator lever for synchronously adjusting a revolution speed of the propeller shafts of the engines; and control means for performing control when an output rpm of one of the engines has dropped so as to lower the revolution speed of the propeller shafts of the other remaining engines to a revolution speed that is synchronized to the revolution speed of the propeller shaft of the engine whose output rpm has dropped, wherein when the output rpm of the engine whose output has dropped falls even further below a predetermined threshold and a propelling force no longer can be obtained, the control means terminates control to synchronously adjust the revolution speed of the propeller shafts of the other remaining engines to the revolution speed of the propeller shaft of that engine, so that only the rotational velocities of the propeller shafts of the remaining other engines are adjusted with the regulator lever.