JPS62138862U

JPS62138862U -

Info

Publication number: JPS62138862U
Application number: JP2693586U
Authority: JP
Priority date: 1986-02-26
Filing date: 1986-02-26
Publication date: 1987-09-01

Description

[Brief explanation of the drawing]

第１図から第４図は本考案の実施例に係り、第
１図は燃料ポンプのバーレル部の概略正面図、第
２図はプランジヤの部分斜視図、第３図は第１図
に示すものの吸入行程時における概略正面図、第
４図は第１図に示すものの排出行程時における概
略正面図、第５図から第１０図は従来例に係り、
第５図は燃料ポンプのバーレル部の吸入行程時に
おける概略斜視図、第６図は第５図に示すものの
圧縮行程時における概略斜視図、第７図は第５図
に示すものの排出行程時における概略斜視図、第
８図は第７図のＥ部拡大図、第９図および第１０
図は傾斜溝の別実施例を示す第５図のＦ―Ｆ矢視
断面図である。１……燃料ポンプ、２……プランジヤ、３……
バーレル、５……傾斜溝、５ａ……リード面、６
……切欠き部、８……吸入ポート、９……スピル
ポート。 1 to 4 relate to an embodiment of the present invention, in which FIG. 1 is a schematic front view of the barrel portion of the fuel pump, FIG. 2 is a partial perspective view of the plunger, and FIG. 3 is the same as shown in FIG. 1. FIG. 4 is a schematic front view of the device shown in FIG. 1 during the exhaust stroke, and FIGS. 5 to 10 are related to conventional examples.
Fig. 5 is a schematic perspective view of the barrel section of the fuel pump during the suction stroke, Fig. 6 is a schematic perspective view of the fuel pump shown in Fig. 5 during the compression stroke, and Fig. 7 is a schematic perspective view of the fuel pump shown in Fig. 5 during the exhaust stroke. A schematic perspective view, FIG. 8 is an enlarged view of section E in FIG. 7, and FIGS. 9 and 10.
The figure is a sectional view taken along the line FF in FIG. 5, showing another embodiment of the inclined groove. 1...Fuel pump, 2...Plunger, 3...
Barrel, 5... Inclined groove, 5a... Lead surface, 6
...Notch, 8...Suction port, 9...Spill port.

Claims

[Scope of utility model registration request]

In the fuel pump, a plunger is fitted into a barrel provided with a suction port and a spill port disposed below the suction port so as to be slidable in an axial direction and rotatable in a circumferential direction. An inclined groove and a notch communicating the inclined groove with the top surface of the plunger are formed on the outer circumferential surface of the head of the plunger, and the spill port is substantially perpendicular to the lead surface of the inclined groove of the plunger. A fuel pump characterized by having a long hole.