公开(公告)号：WO2019211508A1

公开(公告)日：2019-11-07

申请号：PCT/FI2018/050329

申请日：2018-05-04

Applicant: WÄRTSILÄ FINLAND OY

Inventor： STRANDBERG, Jörgen ,  HÄGGLUND, Thomas ,  SUNDSTEN, Magnus ,  WINTER, Edward

IPC: F02B77/08 ,  F02N19/00 ,  F01L13/08

Abstract: The disclosure relates to a method for starting a four-stroke reciprocating internal combustion piston engine. The present disclosure further concerns a four-stroke reciprocating internal combustion piston engine for implementing the method. The description is based on the idea of providing an airflow into the combustion cylinder during an instroke of the respective piston, so as to expel any remaining liquid from the combustion cylinder via the exhaust valve.

公开(公告)号：WO2018002409A1

公开(公告)日：2018-01-04

申请号：PCT/FI2016/050468

申请日：2016-06-28

Applicant: WÄRTSILÄ FINLAND OY

Inventor： WINTER, Edward ,  SUNDSTEN, Magnus

IPC: F01L9/02

CPC classification number: F01L9/023 ,  F01L2800/10

Abstract: The gas exchange valve arrangement for a piston en- gine comprises at least one gas exchange valve (1), a cam (2) for operating the valve (1), and force trans- mission means (3, 4, 5, 6, 7, 8, 9) between the cam (2) and the valve (1). The arrangement further comprises a piston (10) having a piston surface (11) delimiting a fluid chamber (12), the piston (10) being configured to be operated independently from the cam (2) by hy- draulic pressure applied to the piston surface (11) for creating opening force for additional opening of the gas exchange valve (1), a pressure medium source (13) for supplying pressure medium into the fluid chamber (12), means (14, 15, 15a) for controlling flow from the pressure medium source (13) into the fluid chamber (12), and means (14, 15, 15b) for controlling pressure release from the fluid chamber (12).

Abstract translation: 用于活塞发动机的气体交换阀装置包括至少一个气体交换阀（1），用于操作阀（1）的凸轮（2）以及力传递装置（ （2）与阀门（1）之间的连接（3,4,5,6,7,8,9）。 该装置还包括具有限定流体室（12）的活塞表面（11）的活塞（10），活塞（10）构造成通过施加到活塞上的液压压力独立于凸轮 用于产生用于附加打开气体交换阀1的打开力的表面11，用于将压力介质供应到流体腔12中的压力介质源13，用于控制流量的装置14,15,15a， 从压力介质源（13）流入流体室（12），以及用于控制从流体室（12）释放压力的装置（14,15,15b）。

公开(公告)号：WO2019145596A1

公开(公告)日：2019-08-01

申请号：PCT/FI2018/050065

申请日：2018-01-26

Applicant: WÄRTSILÄ FINLAND OY

Inventor： SUNDSTEN, Magnus ,  WINTER, Edward

IPC: F01L9/02

Abstract: The disclosure relates to a safety actuator (1) for operating a respective overhead valve (2) of a reciprocating internal combustion piston engine, comprising an operating configuration for operating the respective overhead valve (2) between a closed position and an open position during normal operating mode, and a safety configuration for operating the respective overhead valve between a closed position and a safety position during a safety operating mode. A safety actuator assembly comprising a operation control valve (6) for controlling the operating configuration, and a safety control valve (7) for controlling the safety configuration is also concerned. In addition, a reciprocating internal combustion engine having such a safety actuator assembly is also discussed.