公开(公告)号：US5551835A

公开(公告)日：1996-09-03

申请号：US566210

申请日：1995-12-01

Applicant: Dequan Yu ,  Harold L. Castle

Inventor： Dequan Yu ,  Harold L. Castle

IPC: F04D5/00 ,  F04D29/66 ,  F04D9/00

CPC classification number: F04D29/669 ,  F04D5/002 ,  F04D5/007 ,  F05B2250/503

Abstract: An automotive fuel pump housing for a fuel pump encases a rotary pumping element. The housing has two portions, a cover and a bottom. The cover has an inlet port which defines a directional control surface having an inclined frustoconical portion and an inclined planar portion conjoined therewith and laterally extending therefrom such that fuel flowing over the inclined frustoconical portion accelerates primarily radially and combines with fuel flowing primarily axially over the inclined planar portion, whereby the combined flow is smoothly directed to an annular cover channel. The bottom has an annular bottom channel which, when the cover and bottom are assembled, the annular cover channel and annular bottom channel cooperate to form the inlet channel. A transition section is located at the beginning of the inlet channel and extends along a portion of the arc of the inlet channel. The transition section decreases in depth from a maximum depth at the beginning thereof to the depth of the remaining portion of the inlet channel. The annular cover channel has a two-step transition section depth whereas the annular bottom channel has a single-step transition section depth. In addition, the radius of the base circle of the inlet channel outside of the transition section is not less than the radius of the rotary pumping element near the vane grooves.

Abstract translation: 用于燃料泵的汽车燃料泵壳体包围旋转泵送元件。 外壳有两个部分，一个盖子和一个底部。 盖具有入口端口，该入口限定了具有倾斜的截头圆锥形部分的倾斜平面部分和与其结合并从其侧向延伸的倾斜平面部分的方向控制表面，使得流过倾斜截头圆锥形部分的燃料主要径向地加速，并与主要在轴向上倾斜在倾斜 平面部分，由此组合的流动平滑地引导到环形覆盖通道。 底部具有环形底部通道，当盖和底部组装时，环形盖通道和环形底部通道配合形成入口通道。 过渡部分位于入口通道的开始处并且沿着入口通道的弧的一部分延伸。 过渡部分从其开始处的最大深度到入口通道的剩余部分的深度的深度减小。 环形盖通道具有两级过渡段深度，而环形底部通道具有单步过渡段深度。 此外，过渡部分外侧的入口通道的基圆的半径不小于叶片槽附近的旋转泵送元件的半径。

公开(公告)号：US5375975A

公开(公告)日：1994-12-27

申请号：US173228

申请日：1993-12-27

Applicant: Dequan Yu ,  Robert D. Gaston

Inventor： Dequan Yu ,  Robert D. Gaston

IPC: F02M37/08 ,  F02M37/20 ,  F04D3/02 ,  F04D29/42 ,  F04D29/40

CPC classification number: F04D29/4273 ,  F04D3/02

Abstract: A fuel pump has a motor mounted within a housing with a shaft extending therefrom to which a helically shaped impeller is fitted for pumping fuel from a fuel tank to an automotive engine. An end section of the housing has an inlet leading from the fuel tank to a pre-swirl fuel channel or trough located at the radially outermost perimeter of an impeller mating face on the end section. The trough has an inlet ramp which routes fuel to an inclined section with an axial grade to force the fuel to flow in the direction of impeller rotation. A trough termination ramp between the inclined section and the inlet ramps fuel toward the impeller at a steeper grade than the inclined section such that the fuel trough becomes flush with the impeller mating face. Fuel can thus be picked-up by the impeller throughout at least 340.degree. of rotation.

Abstract translation: 燃料泵具有安装在壳体内的电动机，其中从其延伸的轴安装螺旋形叶轮以将燃料从燃料箱泵送到汽车发动机。 壳体的端部具有从燃料箱引导到位于端部上的叶轮配合面的径向最外周边处的预旋燃料通道或槽的入口。 槽具有入口斜坡，其将燃料路向具有轴向等级的倾斜部分，以迫使燃料沿叶轮旋转方向流动。 倾斜部分和入口坡道之间的槽终止斜坡以比倾斜部分更陡的级别向叶轮燃料燃料，使得燃料槽与叶轮配合面平齐。 因此，燃油可以在至少340°的旋转中由叶轮拾取。

公开(公告)号：US5330319A

公开(公告)日：1994-07-19

申请号：US115079

申请日：1993-09-02

Applicant: Dequan Yu ,  Henry W. Brockner

Inventor： Dequan Yu ,  Henry W. Brockner

IPC: F02M37/08 ,  F02M37/20 ,  F04D5/00 ,  F04D9/00

CPC classification number: F04D5/002 ,  F04D9/003 ,  F05B2260/96

Abstract: A fuel pump of the regenerative turbine type has an impeller enclosed between a pump cover and a pump bottom, with a pumping chamber formed between the cover and bottom along the periphery of the impeller. A vapor purge orifice, having a chamfered inlet, a plurality of different diameter sections, and a chamfered outlet, leads to a vapor purge channel which runs radially along an outside portion of the pump cover. The purge channel has baffles through which the fuel vapor flows before exiting through at least one outlet into the fuel tank. Fuel vapor is more effectively removed from the pumping chamber by the smoother sections and chamfers of the purge orifice and its energy is effectively dissipated by the purge channel baffles, thus reducing pump noise and increasing pump efficiency.

Abstract translation: 再生涡轮机类型的燃料泵具有封闭在泵盖和泵底部之间的叶轮，其中沿着叶轮的周边形成在盖和底部之间的泵送室。 具有倒角入口，多个不同直径部分和倒角出口的蒸汽吹扫孔导向沿泵壳外部径向延伸的蒸气吹扫通道。 净化通道具有挡板，燃料蒸汽在通过至少一个出口进入燃料箱之前流过该挡板。 通过清洗孔的更平滑的部分和倒角更有效地从泵送室除去燃料蒸汽，并且其能量被净化通道挡板有效地消散，从而降低泵噪声并提高泵的效率。

公开(公告)号：US5284417A

公开(公告)日：1994-02-08

申请号：US72018

申请日：1993-06-07

Applicant: Dequan Yu

Inventor： Dequan Yu

IPC: F02M37/10 ,  F04D5/00 ,  F04D7/02 ,  F04D9/00

CPC classification number: F04D9/002 ,  F04D5/002 ,  F04D5/007 ,  F05B2250/503 ,  F05B2250/71

Abstract: A pump for supplying gasoline to the fuel injectors of an automotive engine includes a pump case, and upper and lower pump housings mounted within the case and forming an annular pumping channel. The pumping channel includes a vapor channel extending along an axially enlarged section of the bottom portion of the pumping channel from the pump's inlet to a purge orifice which extends axially through the lower pump housing from a radially inward portion of the pumping channel.

Abstract translation: 用于向汽车发动机的燃料喷射器供应汽油的泵包括泵壳体，以及安装在壳体内并形成环形泵送通道的上下泵壳体。 泵送通道包括沿泵送通道的底部的轴向扩大部分从泵的入口延伸到吹扫孔的蒸气通道，其从泵送通道的径向向内部分轴向延伸穿过下泵壳体。