公开(公告)号：US5743238A

公开(公告)日：1998-04-28

申请号：US824373

申请日：1997-03-25

申请人： Stacy Jean Shorey ,  Randall Clare Harkema ,  Beckie J. DeYoung ,  Kenneth R. Potter ,  Robert Daniel Straub

发明人： Stacy Jean Shorey ,  Randall Clare Harkema ,  Beckie J. DeYoung ,  Kenneth R. Potter ,  Robert Daniel Straub

IPC分类号： F02M51/00 ,  F02M51/06 ,  F02M57/02 ,  F02M59/26 ,  F02M59/36 ,  F02M59/46 ,  F02M37/04

CPC分类号： F02M59/26 ,  F02M57/02 ,  F02M57/023 ,  F02M59/366 ,  F02M59/466 ,  F02M2200/04

摘要： A device is provided for pumping fuel through an internal combustion engine, comprising a pump cylinder and a piston reciprocable within the pump cylinder to define a pump chamber open at one end in which fuel is pressurized during a pump stroke of the piston. A fuel supply means is provided for supplying fuel to the pump chamber. The fuel supply means includes an electromagnetically actuated fuel control valve having an armature secured thereto, with the armature residing in a fuel-filled armature cavity. The armature electromagnetically cycled between a first position closing the fuel control valve and thereby closing the flow of fuel to the pumping chamber and a second position opening the control valve thereby allowing fuel to flow to the pumping chamber. The armature is a flat plate secured to the control valve and constructed with a series of flow through holes and/or slots of prescribed geometry to (i) assist in precluding cavitation errosion of the armature and/or fastener securing it to the control valve by the fuel within the armature cavity, and (ii) to enhance the hysteresis characteristics of the fuel control valve. Various embodiments are provided.

摘要翻译： 提供了一种用于通过内燃机泵送燃料的装置，包括泵缸和可在泵缸内往复运动的活塞，以限定在活塞的泵冲程期间燃料被加压的一端开放的泵室。 提供燃料供给装置用于向泵室供应燃料。 燃料供给装置包括电磁致动的燃料控制阀，其具有固定到其上的电枢，电枢位于燃料填充的电枢腔中。 电枢在第一位置之间电磁循环，第一位置关闭燃料控制阀，从而关闭到泵送室的燃料流;以及打开控制阀的第二位置，从而允许燃料流到泵送室。 电枢是固定到控制阀的平板，并且具有一系列具有规定几何形状的流动通孔和/或狭槽，以便（i）有助于排除电枢和/或紧固件的气穴侵蚀，该电枢和/或紧固件通过 电枢腔内的燃料，以及（ii）增强燃料控制阀的滞后特性。 提供了各种实施例。