JPH0212059U - - Google Patents
Info
- Publication number
- JPH0212059U JPH0212059U JP8892888U JP8892888U JPH0212059U JP H0212059 U JPH0212059 U JP H0212059U JP 8892888 U JP8892888 U JP 8892888U JP 8892888 U JP8892888 U JP 8892888U JP H0212059 U JPH0212059 U JP H0212059U
- Authority
- JP
- Japan
- Prior art keywords
- accumulation rate
- rate piston
- push plate
- locking member
- back pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000009825 accumulation Methods 0.000 claims description 13
- 238000002347 injection Methods 0.000 claims description 11
- 239000007924 injection Substances 0.000 claims description 11
- 239000000446 fuel Substances 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
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パイロツト噴射装置の主要部
断面図である。
１……燃料噴射ポンプ、１０……プランジヤ室
、２０……パイロツト噴射装置、５１……アキユ
ームレートピストン、５１ａ……アキユームレー
トピストンジヤーナル部、５２……アキユームレ
ートピストンガイド、５５……キヤツプ、５６…
…アキユームレートピストンストツパ、６３……
背圧室、６４……プレツシヤピン、６４ａ……逃
げ孔、６５……リターンスプリング、６８……プ
レツシヤピンストツパ、６８ａ……先端部、６８
ｂ……マグネツト。
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 view showing the operation of the prior art, and FIGS. 5 and 6 are sectional views of main parts of a pilot injection device according to other embodiments of the present invention. DESCRIPTION OF SYMBOLS 1...Fuel injection pump, 10...Plunger chamber, 20...Pilot injection device, 51...Accumulation rate piston, 51a...Accumulation rate piston journal part, 52...Accumulation rate piston guide, 55... Cap, 56...
...Accumulation rate piston stopper, 63...
Back pressure chamber, 64...pressure pin, 64a...relief hole, 65...return spring, 68...pressure pin stopper, 68a...tip part, 68
b...Magnet.
Claims (1)
レートピストンガイドと、 該アキユームレートピストンガイド内に嵌挿さ
れ、上記加圧室内の燃料圧力上昇に伴い、上記ア
キユームレートピストンガイドに対して上記加圧
室と反対側に配設された背圧室側へ押圧移動され
るアキユームレートピストンと、 上記アキユームレートピストンガイドと上記背
圧室との間に介装されて貫通孔を有し、上記加圧
室内の燃料圧力上昇に伴う上記アキユームレート
ピストンの移動量を制限するストツパと、 上記背圧室に内設され、上記ストツパの貫通孔
と遊嵌する上記アキユームレートピストンの押圧
力伝達部から伝達される押圧力により該アキユー
ムレートピストンに連動する押板と、 該押板を介して上記アキユームレートピストン
を上記加圧室側へ付勢するスプリングと、 上記背圧室に内設され、上記アキユームレート
ピストンの移動に伴う上記押板の移動量を当接に
より制限する係止部材と、 を具備した燃料噴射ポンプのパイロツト噴射装
置であつて、 さらに、上記押板と上記係止部材との当接面の
一部に凹設され、当接時に、該押板と該係止部材
との間に所定間隔を形成する非当接部と、 上記押板、上記係止部材の何れか一方の、上記
当接部に対向する位置に配設された磁石と、 を備えたことを特徴とする燃料噴射ポンプのパ
イロツト噴射装置。[Scope of Claim for Utility Model Registration] An accumulation rate piston guide that communicates with a pressurizing chamber of a fuel injection pump; An accumulation rate piston that is pressed and moved toward a back pressure chamber disposed on the opposite side of the pressurizing chamber with respect to the accumulation rate piston guide, and an intermediary between the accumulation rate piston guide and the back pressure chamber. a stopper that is installed in the back pressure chamber and has a through hole and limits the amount of movement of the accumulation rate piston as the fuel pressure increases in the pressurizing chamber; a push plate that interlocks with the accumulation rate piston by a pushing force transmitted from a pushing force transmission section of the accumulation rate piston; and a pushing plate that urges the accumulation rate piston toward the pressurizing chamber through the pushing plate. A pilot injection device for a fuel injection pump, comprising: a spring installed in the back pressure chamber; and a locking member that limits the amount of movement of the push plate due to movement of the accumulation rate piston by abutment. Further, a non-contact member is recessed in a part of the contact surface between the push plate and the locking member, and forms a predetermined interval between the push plate and the locking member when the push plate and the locking member are in contact. A pilot injection device for a fuel injection pump, comprising: a magnet disposed at a position facing the contact portion of either the push plate or the locking member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8892888U JPH0212059U (en) | 1988-07-04 | 1988-07-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8892888U JPH0212059U (en) | 1988-07-04 | 1988-07-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0212059U true JPH0212059U (en) | 1990-01-25 |
Family
ID=31313485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8892888U Pending JPH0212059U (en) | 1988-07-04 | 1988-07-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0212059U (en) |
-
1988
- 1988-07-04 JP JP8892888U patent/JPH0212059U/ja active Pending
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