公开(公告)号：US4945874A

公开(公告)日：1990-08-07

申请号：US286139

申请日：1988-12-19

申请人： Tutomu Nishitani ,  Takio Suzuki ,  Yasuaki Kono ,  Tadamasa Osako ,  Sunao Kitamura ,  Youzou Sakakibara ,  Naruto Ito

发明人： Tutomu Nishitani ,  Takio Suzuki ,  Yasuaki Kono ,  Tadamasa Osako ,  Sunao Kitamura ,  Youzou Sakakibara ,  Naruto Ito

IPC分类号： F02D11/04 ,  F02M19/12

CPC分类号： F02M19/12 ,  F02D11/04

摘要： A throttle body for an internal combustion engine, comprising a suction passage for supplying a suction air to the internal combustion engine; a throttle valve provided in the suction passage and fixed to a rotatable throttle valve shaft so as to adjust a quantity of the suction air; an interconnecting lever rotatably mounted to an interconnecting shaft and adapted to be rotated by pulling an accelerator cable; a throttle valve operating lever mechanically connected to the interconnecting lever and fixed to the throttle valve shaft, the throttle valve operating lever being rotated in predetermined relational association with rotation of the interconnecting lever to open and close the throtle valve; and a tension spring for normally biasing the throttle valve in a valve closing direction, the tension spring having one end or pivotal point fixed to a part fixed to the throttle body and the other end or operation point fixed to the throttle valve operating lever; wherein the pivotal point and the operation point are located at positions such that a distance from the throttle valve shaft to a line connecting the pivotal point and the operation point is gradually reduced as the throttle valve is opened, and a connection point between the interconnecting lever and the throttle valve operating lever is approached to a line connecting the throttle valve shaft and the interconnecting shaft as the throttle valve is opened.

摘要翻译： 一种用于内燃机的节气门体，包括用于向内燃机供给吸入空气的吸入通道; 设置在所述吸入通道中并且固定到可旋转节流阀轴以便调节所述吸入空气量的节流阀; 互连杠杆，其可旋转地安装到互连轴并且适于通过拉动加速器缆线而旋转; 节流阀操作杆，其机械地连接到互连杆并固定到节流阀轴，节气门操作杆以预定的关系关联旋转，连接互连杆的旋转以打开和关闭节流阀; 以及张紧弹簧，用于在关闭方向上使所述节气门正常地偏压，所述拉伸弹簧的一端或枢转点固定到固定到所述节气门体的部分，而固定到所述节气门操作杆的另一端或操作点; 其特征在于，所述枢转点和所述操作点位于使得所述节流阀轴与连接所述枢转点和所述操作点的线的距离随着所述节流阀打开而逐渐减小的位置，并且所述互连杆 并且当节流阀打开时，节流阀操作杆接近连接节流阀轴和互连轴的管线。