公开(公告)号：UST101202I4

公开(公告)日：1981-11-03

申请号：US219558

申请日：1980-12-23

申请人： John H. Furbacher ,  Edwin K. Ratledge ,  Richard A. Ullmann

发明人： John H. Furbacher ,  Edwin K. Ratledge ,  Richard A. Ullmann

IPC分类号： F02M3/12 ,  F02M7/02

CPC分类号： F02M3/12

摘要： A carburetor is provided with a separate idle air/fuel system containing an idle fuel metering jet or orifice; and an idle fuel tube connected to an induction passage discharge port downstream of the throttle valve, the idle fuel tube being surrounded or enclosed near the discharge end by an air well connected to a main air bleed, this portion of the idle tube having air bleed holes for mixing air with the fuel to provide acceptable driveability during idle speed operation, the diameter of the holes being mathematically calculatable to vary in a direct relation to the size of the idle metering jet and in an inverse relation to the diameter of the idle air well tube, to provide an essentially constant air/fuel ratio to the idle mixture flow upon changes in either the idle jet size or the idle tube size.

公开(公告)号：US3957022A

公开(公告)日：1976-05-18

申请号：US609765

申请日：1975-09-02

申请人： John H. Furbacher

发明人： John H. Furbacher

IPC分类号： F02M3/06 ,  F02M11/02

CPC分类号： F02M11/02 ,  F02M3/06 ,  Y10S261/19 ,  Y10S261/74

摘要： A four barrel carburetor is provided with apparatus that operates automatically during predetermined engine deceleration operating conditions to crack open the secondary induction passage throttle valve to supply a quantity of fuel and air to the engine that is supplemental to that being supplied through the primary induction system, to decrease the output of harmful emissions by causing a cleaner burn.

摘要翻译： 四桶式化油器设置有在预定的发动机减速操作条件下自动操作的装置，以破裂二次感应通道节流阀，以向发动机供应一定量的燃料和空气，该燃料和空气补充到通过主感应系统供应的燃料和空气， 通过造成更清洁的燃烧来减少有害排放物的产出。