公开(公告)号：US20240360808A1

公开(公告)日：2024-10-31

申请号：US18644365

申请日：2024-04-24

申请人： MAN Energy Solutions SE

发明人： Björn DIRUMDAM ,  Thomas KLAUA

IPC分类号： F02M61/10 ,  F02M61/14

CPC分类号： F02M61/10 ,  F02M61/14

摘要： A fuel injector supplying fuel to a combustion chamber of an internal combustion engine, having a main body, a first nozzle needle moveably guided in a first needle guide, a first needle fuel chamber interacting with the first nozzle needle for a first liquid fuel, coupled to the combustion chamber by first channels. The first channels, via first inner openings, are connected to the first needle fuel chamber, having a second nozzle needle moveably guided in a second needle guide, a second needle fuel chamber interacting with the second nozzle needle for a second liquid fuel, coupled via second channels to the combustion chamber. The second channels are connected via second inner openings to the second needle fuel chamber. The first inner openings are arranged on a first circular contour and the second inner openings on a second circular contour extending concentrically about the first circular contour.

公开(公告)号：US20210404427A1

公开(公告)日：2021-12-30

申请号：US17357318

申请日：2021-06-24

申请人： MAN Energy Solutions SE

发明人： Johann WLOKA ,  Ludwig MAIER ,  Thomas KLAUA

IPC分类号： F02M37/00 ,  F02M43/02 ,  F02M43/04

摘要： A dual-fuel internal combustion engine includes: cylinders for combusting a first liquid fuel having a first ignitability in a first operating mode, and a second liquid fuel having a second lesser ignitability, in a second operating mode; a main injection system including a main injector for each cylinder, for feeding the first liquid fuel to the respective cylinders in the first operating mode and for feeding the second liquid fuel to the respective cylinders in the second operating mode; and a pilot injection system including a pilot injector for each cylinder, via which the first liquid fuel can is feedable to the respective cylinders in the second operating mode for igniting the second liquid fuel. The main and pilot injection systems are coupled such that in the second operating mode the first liquid fuel, is feedable to the respective main injector as a working fluid and/or a barrier fluid.