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1. 发明申请

US20080141976A1 Throttle Valve Controller for Internal Combustion Engine 有权
标题翻译：节气门控制器内燃机
公开(公告)号：US20080141976A1
公开(公告)日：2008-06-19
申请号：US11945657
申请日：2007-11-27
申请人： Yoshihiko AKAGI , Hidefumi IWAKI , Kenji ONO
发明人： Yoshihiko AKAGI , Hidefumi IWAKI , Kenji ONO
IPC分类号： F02D9/08 , F02D41/00
CPC分类号： F02D11/105 , F02D11/107 , F02D41/2464 , F02D2041/2048 , F02D2250/16
摘要： If a throttle valve is moved toward the mechanical full close position at high speed, the throttle valve may overshoot and collide against the full close position. This may damage and deform the throttle valve. It is an object of the present invention to set a lower limiter to the throttle valve so as to secure a margin to prevent such collision while attaining lowered fuel consumption or improved fuel efficiency.The above-mentioned object is attained by a throttle valve controller for an internal combustion engine, which comprises: a throttle valve which is driven by a motor; means for determining the target opening of the throttle valve based on the operating state of the vehicle or internal combustion engine; a first lower limit which is determined beforehand as the minimum target opening; and means for setting a second lower limit which is smaller than the first lower limit if the determined target opening is smaller than a predetermined opening and/or if the rotation speed of the internal combustion engine is lower than a predetermined speed.
摘要翻译：如果节气门以高速向机械全关闭位置移动，则节流阀可能会过冲并碰到完全关闭位置。这可能会损坏节流阀并使其变形。本发明的一个目的是设定一个节流阀的下限，以便确保一个余量以防止这种碰撞，同时达到降低的燃料消耗或提高的燃料效率。上述目的是通过一种用于内燃机的节气门控制器实现的，其包括：由电动机驱动的节气门; 用于基于车辆或内燃机的操作状态确定节气门的目标开度的装置; 预先确定为最小目标开口的第一下限; 以及如果所确定的目标开度小于预定开口和/或内燃机的转速低于预定速度，则设定小于第一下限的第二下限的装置。

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