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1. 发明授权

US5722367A Engine idle speed air control 失效
标题翻译：发动机空转速度空气控制
公开(公告)号：US5722367A
公开(公告)日：1998-03-03
申请号：US654541
申请日：1996-05-29
申请人： Randall P. Izydorek , Charles H. Tuckey , Kevin L. Williams
发明人： Randall P. Izydorek , Charles H. Tuckey , Kevin L. Williams
IPC分类号： F02M3/09
CPC分类号： F02M3/09
摘要： A control device for bypassing intake air around a closed throttle valve of an operating engine while it is idling. The device has a main flow control valve controlling bypass air flow in the bypass air passageway of the device and movable to closed and open positions by a diaphragm actuated by engine intake vacuum controlled by a pilot valve actuated by a solenoid. The main valve, pilot valve and plunger of the solenoid are all movably received on and supported by a stationary slide rod which preferably extends into the coil of the solenoid and is supported adjacent only one end in a cantilever fashion. The main valve includes a main valve body with piston head movable with a flow clearance in and out of an air passage bore of the air outlet side of the bypass air passageway. An annular main valve seat is located at the open upstream end of the bore through which the piston head moves in its axial travel between fully open and closed positions of the main valve. The main valve also includes a flexible valve disc upstream of the valve body which is engageable with the main valve seat to fully close the same. The valve disc is controllably peeled off the main valve seat by a wedge shaped face of the piston head during initial opening travel of the main valve. The piston is also peripherally shaped to cooperate with the air passage bore and main valve seat to controllable vary the flow controlling cross sectional area of the bypass passageway and hence the bypass air flow rate as a function of incremental axial travel of the main valve along the slide rod.
摘要翻译：一种控制装置，用于在空转时绕过操作引擎的封闭节流阀周围的进气。该装置具有主流量控制阀，其控制装置的旁路空气通道中的旁路空气流动，并通过由由螺线管致动的先导阀控制的发动机进气真空度致动的隔膜移动到闭合和打开位置。螺线管的主阀，先导阀和柱塞都可移动地容纳在固定的滑动杆上，并且由固定的滑动杆支撑，该固定滑杆优选地延伸到螺线管的线圈中，并且以悬臂方式仅支撑在一端。主阀包括具有活塞头的主阀体，活塞头可移动而流动间隙进入和离开旁通空气通道的空气出口侧的空气通道孔。环形主阀座位于孔的开放的上游端，活塞头在主阀的完全打开和关闭位置之间以其轴向行进运动。主阀还包括在阀体上游的柔性阀盘，其可与主阀座接合以完全关闭阀体。在主阀的初始打开行程期间，阀盘通过活塞头的楔形面可控地从主阀座剥离。活塞也是圆周形的，以与空气通道孔和主阀座配合，以可控地改变旁路通道的流量控制横截面面积，并因此改变作为主阀沿着沿着主阀的增量轴向行程的旁路空气流量滑杆。

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