公开(公告)号：US4744339A

公开(公告)日：1988-05-17

申请号：US58764

申请日：1987-06-05

申请人： Shigeru Nagai ,  Yasuhide Sakamoto ,  Hiromitsu Sato ,  Hideji Ohura ,  Masashi Kawamata ,  Masayuki Kumada

发明人： Shigeru Nagai ,  Yasuhide Sakamoto ,  Hiromitsu Sato ,  Hideji Ohura ,  Masashi Kawamata ,  Masayuki Kumada

IPC分类号： F02P5/06 ,  F02P5/04

CPC分类号： F02P5/06

摘要： Disclosed is a centrifugal spark-advance control device for an ignition system of an internal combustion engine, comprising: a base plate which rotates at a speed corresponding to the rotational speed of the engine; a timing plate which is rotatably supported on the base plate; a spring for biasing the timing plate in a certain direction; a centrifugal weight which is pivoted to the base plate at a point spaced from the center of gravity of the centrifugal weight and which is provided with a cam surface for rotatably driving the timing plate in an opposite direction against the biasing force of the spring by cooperating with a corresponding cam follower surface provided in the timing plate; a spark generating device coupled to the timing plate for generating ignition sparks in synchronism with the rotational angle of the timing plate; a mass member attached to the timing plate by way of an elastic member. Since the mass member is elastically supported by the timing plate, undesirable vibration of the timing plate is minimized by the action of a dynamic damper provided by the mass member and the accuracy in ignition timing is assured.

摘要翻译： 公开了一种用于内燃机的点火系统的离心式火花提前控制装置，包括：基板，其以对应于发动机的转速的速度旋转; 正时板，其被可旋转地支撑在基板上; 弹簧，用于沿正确的方向偏压定时板; 离心重物在与离心重心的重心隔开的位置处枢转到基板，并且设置有凸轮表面，用于通过协作来克服弹簧的偏置力在相反方向上可旋转地驱动正时板 其具有设置在所述正时板中的相应的凸轮从动件表面; 火花发生装置，其连接到所述正时板，用于与所述定时板的旋转角度同步地产生点火火花; 通过弹性构件附接到正时板的质量构件。 由于质量构件由正时板弹性支撑，所以通过由质量构件提供的动力阻尼器的作用使正时板的不期望的振动最小化，并且确保了点火正时的精度。