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11. 发明授权

US4566423A Electronic feedback EGR valve 失效
标题翻译：电子反馈EGR阀
公开(公告)号：US4566423A
公开(公告)日：1986-01-28
申请号：US563474
申请日：1983-12-20
申请人： Andrew A. Kenny , Robert G. Sokalski , Lawrence E. Egle , Daniel C. Stahly
发明人： Andrew A. Kenny , Robert G. Sokalski , Lawrence E. Egle , Daniel C. Stahly
IPC分类号： F02M25/07 , F02M25/06
CPC分类号： F02M26/58 , F02M26/47 , F02M26/48 , F02M26/68 , Y10S137/907
摘要： A vacuum operated EGR valve/controller having a vacuum signal responsive diaphragm converted to operate the EGR poppet valve. A flow limiting orifice is provided upstream of the valve and a flow sensing pressure tap provided intermediate the valve and the orifice. Flow pressure is sensed by a piezoresistive transducer which gives an electrical signal indicative thereof. In one embodiment, the transducer is stationary and flow sensing tube is extended to the valve body. In a second embodiment, the transducer is mounted on the diaphragm for movement therewith and flow sensing is internal through the valve actuator. In another embodiment, a flow sensing orifice is provided downstream of the valve and the transducers has a reference and dynamic probe for sensing the differential of flow pressure on opposite sides of the sensing orifice. In another embodiment, plates attached to the diaphragm form a flow pressure sensing chamber and the transducer tube is received through the plate rail and is sealed by a flexible seal.
摘要翻译：具有真空信号响应膜片的真空操作EGR阀/控制器，转换成操作EGR提升阀。流量限制孔设置在阀的上游，以及设置在阀和孔之间的流量感测压力分接头。压力传感器由压阻传感器感测，该传感器给出了指示其的电信号。在一个实施例中，换能器是静止的，流量传感管延伸到阀体。在第二实施例中，换能器安装在隔膜上以与其一起运动，并且流动感测通过阀致动器内部。在另一个实施例中，流动感测孔设置在阀的下游，并且换能器具有用于感测感测孔的相对侧上的流量压差的参考和动态探针。在另一个实施例中，附接到隔膜的板形成流量压力检测室，并且换能器管通过板轨被接收并且被柔性密封件密封。

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