公开(公告)号：US20210040884A1

公开(公告)日：2021-02-11

申请号：US16981862

申请日：2019-03-18

Applicant: Fuelsave GmbH

Inventor： Dirk HOFFMANN

IPC: F02B43/12 ,  B63H21/14 ,  F02M35/10 ,  F02M25/028 ,  F02M27/04 ,  F02M31/20 ,  F02M25/12 ,  F02D19/06 ,  B63B83/30 ,  C25B1/04

Abstract: A ship propulsion system comprises at least one internal combustion engine with a combustion chamber for burning a fuel and a turbocharger with a compressor in an intake tract of the internal combustion engine. The ship propulsion system further comprises an electrolysis device, which produces hydrogen and oxygen gas, which are added on a pressure side of the compressor and conducted to the internal combustion engine. Moreover, a water tank and an alcohol tank are connected to a pressure side of the compressor in order to add water and alcohol to the charge air.

公开(公告)号：US20210317779A1

公开(公告)日：2021-10-14

申请号：US17277076

申请日：2019-09-25

Applicant: Fuelsave GmbH

Inventor： Dirk HOFFMANN

IPC: F02B53/04 ,  F02M26/14 ,  F02B53/10 ,  F01C20/02

Abstract: An internal combustion engine comprises a plurality of engine units (50A-50C), each having a working space (11), in which two rotary pistons (20, 30) are arranged so as mesh with each other and thereby divide the working space (11) into an inflow region (12) and an outflow region (13). Each engine unit comprises a closable inlet opening (62A-62C) to the inflow region (12) and a closable exhaust gas outlet opening (64A-64C). The internal combustion engine further comprises a feed-line pipe (60) to the inlet openings (62A-62C) and an exhaust gas collection pipe (66) connected to the exhaust gas outlet openings (64A-64C), so that the engine units (50A-50C) are connected in parallel with each other. The internal combustion engine further comprises exhaust gas lines (63A, 63B) which connect the engine units (50A, 50B) with each other in series. In dependence upon a desired power output, a control device (70) operates some of the engine units (50B, 50C) either as internal combustion engines, wherein the respective inlet opening (62B-62C) is opened, or as expansion engines, wherein respective inlet opening (62B-62C) remains closed and the respective rotary pistons (20, 30) are instead driven by exhaust gas flowing in via the respective exhaust gas line (63A, 63B).

公开(公告)号：US20210246825A1

公开(公告)日：2021-08-12

申请号：US17241194

申请日：2021-04-27

Applicant: Fuelsave GmbH

Inventor： Dirk HOFFMANN

IPC: F02B43/12 ,  B63B83/30 ,  B63H21/14 ,  C25B1/04 ,  F02D19/06 ,  F02M25/028 ,  F02M25/12 ,  F02M27/04 ,  F02M31/20 ,  F02M35/10

Abstract: In certain implementations, a ship propulsion system includes: at least one internal combustion engine with: a combustion chamber for burning a fuel; an intake tract for supplying fresh air to the combustion chamber; and a turbocharger with a compressor in the in-take tract; an electrolysis device for producing hydrogen gas for the internal combustion engine and for producing oxygen gas; an alcohol tank for supplying alcohols to the internal combustion engine; and a water tank, wherein the water tank and the alcohol tank are connected to the combustion chamber or a pressure side of the compressor for the supply of water and alcohol into the intake tract, and wherein the electrolysis device is connected to the pressure side of the compressor for supplying hydrogen gas into the intake tract or connected to the combustion chamber for supplying hydrogen gas into the combustion chamber.