公开(公告)号：WO2017153886A1

公开(公告)日：2017-09-14

申请号：PCT/IB2017/051287

申请日：2017-03-06

Applicant: PALIO ENGINE SOLUTION S.R.L

Inventor： PALESE, Antonio

IPC: F01L3/20 ,  F01L1/30 ,  F01L1/20 ,  F01L3/00

CPC classification number: F01L3/20 ,  F01L1/20 ,  F01L1/205 ,  F01L1/30 ,  F01L3/00

Abstract: A rotary valvetrain system, with a curved valve control stem, for opening and closing valves in a four-stroke internal combustion engine, allows a decrease in the dissipations and load losses, with the maximum system compactness, and it comprises: a valve (7; 16) with curved stem (30; 34); a rocker arm (9; 18) constrained to said valve (7; 16), having a respective spindle (10; 19) and recesses (9d, 9e) for housing a pair of disk-like cam followers (12; 21) and respective backlash-recovering plates (13; 22) interposed between the corresponding disk-like cam follower (12; 21) and said rocker arm (9; 18); a valve guide (14; 23) inserted in a respective seat at a duct which is opened and closed by said valve, wherein said curved stem (30; 34) slides sealingly; a sealing spring (15; 24) acting on said spindle (10; 19) to bring the valve (7; 16) in closing position; and a camshaft (25; 26) acting on said cam followers (12; 21).

Abstract translation: 在四冲程内燃机中用于打开和关闭阀的旋转气门机构系统具有曲线阀控制杆，可以降低耗散和负载损失，并具有最大的系统紧凑性， 它包括：具有弯曲杆（30; 34）的阀（7; 16）; 一个限制于所述阀（7; 16）的摇臂（9; 18），该摇臂具有用于容纳一对盘状凸轮从动件（12; 21）的相应的心轴（10; 19）和凹口（9d，9e）; 在相应的盘形凸轮从动件（12; 21）和所述摇臂（9; 18）之间插入的各个侧隙回收板（13; 22）; 在由所述阀门打开和关闭的管道中插入相应座位中的阀门导向件（14; 23），其中所述弯曲阀杆（30; 34）密封地滑动; 作用于所述心轴（10; 19）上以使所述阀（7; 16）处于关闭位置的密封弹簧（15; 24） 和作用在所述凸轮从动件（12; 21）上的凸轮轴（25; 26）。