US 11,753,130 B2
Marine hybrid system and control method for marine hybrid system
Kohei Sakamoto, Sagamihara (JP); and Yoshimi Okazaki, Sagamihara (JP)
Assigned to MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD., Sagamihara (JP)
Appl. No. 17/283,113
Filed by MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD., Sagamihara (JP)
PCT Filed Aug. 28, 2019, PCT No. PCT/JP2019/033773
§ 371(c)(1), (2) Date Apr. 6, 2021,
PCT Pub. No. WO2020/075408, PCT Pub. Date Apr. 16, 2020.
Claims priority of application No. 2018-192051 (JP), filed on Oct. 10, 2018.
Prior Publication US 2021/0387709 A1, Dec. 16, 2021
Int. Cl. B63H 21/20 (2006.01); B63H 21/14 (2006.01); B63H 21/17 (2006.01); B63H 21/21 (2006.01)
CPC B63H 21/20 (2013.01) [B63H 21/14 (2013.01); B63H 21/17 (2013.01); B63H 21/21 (2013.01); B63H 2021/202 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A marine hybrid system, comprising:
an engine;
an electric motor;
a thrust generation device capable of generating a thrust of a ship by using an output of at least one of the engine or the electric motor;
a clutch mechanism configured to be able to switch connection states between the engine, the electric motor, and the thrust generation device;
an overpower determination part for determining whether the engine is in an overload condition; and
a control device for controlling a connection state of the clutch mechanism,
wherein the clutch mechanism is configured that transmission ratios between the engine and the thrust generation device is variable,
wherein the control device controls the clutch mechanism such that a load of the engine is reduced by decreasing the transmission ratios, if the overload determination part determines that the engine is in the overload condition.