公开(公告)号：US20170037750A1

公开(公告)日：2017-02-09

申请号：US15304616

申请日：2015-04-15

Applicant: FREEVALVE AB

Inventor： Anders HOGLUND ,  Urban CARLSON ,  Christian KOENIGSEGG ,  Lars IVARSSON

IPC: F01L1/46 ,  F01L9/02 ,  F01L3/08

CPC classification number: F01L1/465 ,  F01L3/08 ,  F01L3/10 ,  F01L9/02

Abstract: A combustion engine includes an engine valve arranged to selectively open/close a combustion chamber of the engine, a cylinder head adjacent the combustion chamber, arranged to guide a valve stem of the engine valve, the engine valve being axially displaceable relative to the cylinder head between the combustion chamber closed position and the combustion chamber fully opened position, and a valve spring retainer connected to the valve stem. The valve spring retainer partly delimits a gas spring volume, which is in fluid communication with an adjacent gas volume via a port when the engine valve is in the combustion chamber closed position, and which is separated from the adjacent gas volume when the engine valve is in the combustion chamber fully open position, the port being open during at least 25% of the maximal stroke of the engine valve and being closed due to a displacement of the engine valve.

Abstract translation: 内燃机包括：发动机阀，其布置成选择性地打开/关闭发动机的燃烧室，邻近燃烧室的气缸盖，其布置成引导发动机气门的阀杆，发动机气门相对于气缸盖轴向移位 在燃烧室关闭位置和燃烧室完全打开位置之间，以及连接到阀杆的阀弹簧保持器。 阀弹簧保持器部分地限定气体弹簧体积，当发动机气门处于燃烧室关闭位置时，气弹簧体积通过端口与邻近的气体体积流体连通，并且当发动机气门是 在燃烧室完全打开位置，端口在发动机气门的最大行程的至少25％内打开，并由于发动机气门的位移而关闭。