JPH0212061U

JPH0212061U -

Info

Publication number: JPH0212061U
Application number: JP8893088U
Authority: JP
Priority date: 1988-07-04
Filing date: 1988-07-04
Publication date: 1990-01-25

Description

[Brief explanation of drawings]

第１図は本考案一実施例のパイロツト噴射装置
の断面図、第２図は同じくそのパイロツト噴射装
置を備えた燃料噴射ポンプの概略構成図、第３図
は同じくその作動を示す説明図、第４図は従来技
術の作動を示す説明図、第５図、第６図は本考案
のその他の実施例の断面図である。１……燃料噴射ポンプ、１０……加圧室、２０
……パイロツト噴射装置、４３……アキユームレ
ートピストン、４４……シリンダ、４５……スト
ツパ、４６……スプリング、４７……プレツシヤ
ピン、５１……キヤツプ、５３……キヤツプスト
ツパ。 FIG. 1 is a sectional view of a pilot injection device according to an embodiment of the present invention, FIG. 2 is a schematic diagram of a fuel injection pump equipped with the same pilot injection device, FIG. FIG. 4 is an explanatory diagram showing the operation of the prior art, and FIGS. 5 and 6 are sectional views of other embodiments of the present invention. 1... Fuel injection pump, 10... Pressurization chamber, 20
... Pilot injection device, 43 ... Accumulation rate piston, 44 ... Cylinder, 45 ... Stopper, 46 ... Spring, 47 ... Pressure pin, 51 ... Cap, 53 ... Cap stopper.

Claims

[Scope of Claim for Utility Model Registration] A cylinder communicating with a pressurizing chamber of a fuel injection pump; an accumulation piston that is fitted into the cylinder and is pressed and moved as the fuel pressure in the pressurizing chamber increases; a limiting member that limits the amount of movement of the accumulation rate piston as the fuel pressure increases in the pressurizing chamber; and a limiting member disposed on the opposite side of the cylinder to the limiting member to transmit a pressing force of the accumulation rate piston. a presser member that receives a pressing force from a portion and interlocks with the accumulation rate piston; a spring that presses the presser member and biases the accumulation rate piston toward a side opposite to the fuel pressure; A pilot injection device for a fuel injection pump, comprising: a regulating member that regulates the amount of movement of the holding member due to the movement of the holding member through contact; and a contact portion where the holding member and the regulating member come into contact; The fuel is characterized in that the accumulation rate piston and the pressing force transmitting part are arranged concentrically in the direction of movement, and the contact area of the abutting part and the transmitting area of the pressing force transmitting part are set to be substantially the same. Injection pump pilot injector.