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1. 发明公开

EP4187067A1 INTERNAL COMBUSTION ENGINE 无效
公开(公告)号：EP4187067A1
公开(公告)日：2023-05-31
申请号：EP21210085.3
申请日：2021-11-24
申请人： Winterthur Gas & Diesel Ltd.
发明人： Unfug, Fridolin
IPC分类号： F02B25/06 , F02M21/02 , F02M35/10 , F02B75/02 , F02M69/52
摘要： The present invention is related to an internal combustion engine (100) and a method for operating an internal combustion engine. The Internal combustion engine (100), preferably a large two-stroke internal combustion engine, has at least one cylinder (1), preferably having an inner diameter of at least 200mm.
The Internal combustion engine (100) is a low pressure fuel fluid engine or dual-fuel engine (1) comprising at least one fluid admission valve (29) for providing fuel fluid. The cylinder (1) has a plurality of scavenging ports (10) being in fluid communication with a scavenging chamber (4) which surrounds a first end side (6a) of the cylinder (1).
The internal combustion engine (100) comprises at least one mixing chamber (11) providing a mixing volume (12), which is arranged in the scavenging chamber (4). The mixing chamber (11) comprises at least one inlet port (13) for introducing scavenging air, at least one feed nozzle (14) for introducing fuel fluid into the mixing chamber, preferably at least one feed nozzle (14) arranged in each inlet port (13), and at least one outlet (15), each outlet (15) facing at least one scavenging port (10) and preferably up to four adjacent scavenging ports (10).

2. 发明公开

EP4155526A1 FUEL ADMISSION NOZZLE 无效
公开(公告)号：EP4155526A1
公开(公告)日：2023-03-29
申请号：EP21199154.2
申请日：2021-09-27
申请人： Winterthur Gas & Diesel Ltd.
发明人： Schneiter, Dominik , Unfug, Fridolin
IPC分类号： F02M26/20 , F02M21/02 , F02M21/06
摘要： The present invention relates to an internal combustion engine (100) comprising a fuel admission nozzle, a fuel admission nozzle and a method for feeding fuel gas to a combustion chamber of an internal combustion engine and a method of manufacturing a fuel admission nozzle. The Internal combustion engine (100) has at least one cylinder (1), namely a large vessel engine with at least one cylinder (1) having an inner diameter of at least 200mm, preferably a low pressure fuel gas engine or dual-fuel engine with a cylinder (1). The internal combustion engine (100) has at least one fuel admission nozzle (10) for injecting low pressure fuel fluid directly into the cylinder (1) through a cylinder wall (2). The fuel admission nozzle (10) comprises at least one fuel fluid feedline (11) fluidly connected or connectable to a fuel feed conduit (21) and at least one inert gas feedline (12) fluidly connected or connectable to an inert gas feed conduit (22).

3. 发明公开

EP4227505A1 INTERNAL COMBUSTION ENGINE AND METHOD FOR OPERATING 审中-实审
公开(公告)号：EP4227505A1
公开(公告)日：2023-08-16
申请号：EP22156018.8
申请日：2022-02-10
申请人： Winterthur Gas & Diesel Ltd.
发明人： Unfug, Fridolin , Ferretti, Martino
IPC分类号： F02B19/10 , F02D19/10 , F02D35/02 , F02P5/152 , F02B25/04
摘要： The present invention relates to an internal combustion engine (10) and to a method for operating a large vessel engine or a stationary engine, which is operable a least in a gas mode. The engine comprises at least one cylinder (11) having an inner diameter (12) of at least 200mm and comprising a pre-chamber, in particular comprising a pilot injection system (13). The engine comprises at least one gas admission valve (14) for supplying fluid fuel to the cylinder (11) , a, preferably low-pressure, exhaust gas recirculation path (16) and a pressure measuring unit (16) with at least one sensor (17) for providing a signal representative of a pressure within the at least one cylinder. The engine comprises a control unit (18) which is configured to receive the signal of the pressure measuring unit, to determine a knock index on basis of the signal, to compare the knock index with a predetermined knock index value or a knock index interval, and to adapt the EGR rate, the time of an ignition event and/or the amount of supplied fluid fuel if the determined knock index is below or above the knock index value or the knock index interval.

4. 发明公开

EP4219921A1 INTERNAL COMBUSTION ENGINE AND METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE 审中-公开
公开(公告)号：EP4219921A1
公开(公告)日：2023-08-02
申请号：EP22154135.2
申请日：2022-01-31
申请人： Winterthur Gas & Diesel Ltd.
发明人： Unfug, Fridolin
IPC分类号： F02D19/02 , F02D41/00 , F02B25/04 , F02D41/14 , F02M26/06 , F02M26/46
摘要： The present invention relates to an internal combustion engine (10) comprising a system for exhaust gas recirculation and to a method for operating an internal combustion engine. The internal combustion engine (10), namely a large vessel engine or a stationary engine, which is operable at least in a gas mode, comprises at least one cylinder (11) having an inner diameter (12) of at least 200mm. The internal combustion engine (10) comprising a turbocharger (13) comprising a turbine (14) and a compressor (15). The engine comprises a low-pressure exhaust gas recirculation path (16) with an EGR valve (17). The internal combustion engine (10) further comprises a first measuring unit (18) for providing a signal representative for an excess-air-ratio in the low-pressure exhaust gas recirculation path, preferably the first measuring unit has a lambda-sensor arranged downstream the EGR valve (17).

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