JPS623948U - - Google Patents

Info

Publication number
JPS623948U
JPS623948U JP9531085U JP9531085U JPS623948U JP S623948 U JPS623948 U JP S623948U JP 9531085 U JP9531085 U JP 9531085U JP 9531085 U JP9531085 U JP 9531085U JP S623948 U JPS623948 U JP S623948U
Authority
JP
Japan
Prior art keywords
fuel
injection pump
pressure
pump housing
fuel injection
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.)
Granted
Application number
JP9531085U
Other languages
Japanese (ja)
Other versions
JPH0444825Y2 (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1985095310U priority Critical patent/JPH0444825Y2/ja
Publication of JPS623948U publication Critical patent/JPS623948U/ja
Application granted granted Critical
Publication of JPH0444825Y2 publication Critical patent/JPH0444825Y2/ja
Expired legal-status Critical Current

Links

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  • High-Pressure Fuel Injection Pump Control (AREA)
  • Fuel-Injection Apparatus (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の燃料噴射ポンプの一例を示す
概略断面図、第２図は第１図のレギユレーテイン
グバルブを拡大して示す断面図、第３図は第１図
のポンプの進角制御特性を示す特性線図である。 １……フイードポンプ、１３……レギユレーテ
イングバルブ、１３ｂ……ピストン、１３ｆ……
ばね、１３ｇ……弁体、１３ｊ……ベローズ、２
９ａ……燃料逃し孔、３７……スピードタイマ、
３９ａ……燃料逃し通路、４１，４２，４３，４
５……通路。 Fig. 1 is a schematic sectional view showing an example of the fuel injection pump of the present invention, Fig. 2 is an enlarged sectional view of the regulating valve shown in Fig. 1, and Fig. 3 is an advance angle of the pump shown in Fig. 1. FIG. 3 is a characteristic diagram showing control characteristics. 1...Feed pump, 13...Regulating valve, 13b...Piston, 13f...
Spring, 13g... Valve body, 13j... Bellows, 2
9a...Fuel relief hole, 37...Speed timer,
39a... Fuel relief passage, 41, 42, 43, 4
5...Aisle.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] フイードポンプからレギユレーテイングバルブ
を介して噴射ポンプハウジング内には圧送された
燃料の一部を、エンジン低負荷時には還流通路を
介して前記フイードポンプの吸入側に戻して前記
噴射ポンプハウジング内の燃料圧力を低下させる
と共に、前記噴射ポンプハウジング内の燃料圧力
に応じて燃料の噴射時期を制御するようにした燃
料噴射ポンプにおいて、大気圧の低下に伴なつて
前記レギユレーテイングバルブの開弁圧値を高め
る開弁圧変更手段と、大気圧の低下に伴なつて前
記還流通路を全開状態から全閉状態まで変化させ
る通路開度制御手段とを備えたことを特徴とする
燃料噴射ポンプ。 A portion of the fuel that is pressure-fed from the feed pump into the injection pump housing via the regulating valve is returned to the suction side of the feed pump through the recirculation passage when the engine is under low load to reduce the fuel pressure in the injection pump housing. In the fuel injection pump, the valve opening pressure value of the regulating valve is increased as the atmospheric pressure decreases, and the fuel injection timing is controlled according to the fuel pressure in the injection pump housing. A fuel injection pump comprising a valve opening pressure changing means and a passage opening control means for changing the recirculation passage from a fully open state to a fully closed state as atmospheric pressure decreases.
JP1985095310U 1985-06-24 1985-06-24 Expired JPH0444825Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1985095310U JPH0444825Y2 (en) 1985-06-24 1985-06-24

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1985095310U JPH0444825Y2 (en) 1985-06-24 1985-06-24

Publications (2)

Publication Number Publication Date
JPS623948U true JPS623948U (en) 1987-01-10
JPH0444825Y2 JPH0444825Y2 (en) 1992-10-22

Family

ID=30654375

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1985095310U Expired JPH0444825Y2 (en) 1985-06-24 1985-06-24

Country Status (1)

Country Link
JP (1) JPH0444825Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02123276A (en) * 1988-10-31 1990-05-10 Hino Motors Ltd Fuel injection pressure controller

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5584824A (en) * 1978-12-16 1980-06-26 Bosch Gmbh Robert Fuel injector for diesel engine
JPS56136140U (en) * 1980-03-14 1981-10-15
JPS59157549U (en) * 1983-03-17 1984-10-23 マツダ株式会社 fuel injection pump
JPS6063042U (en) * 1983-10-05 1985-05-02 マツダ株式会社 diesel engine fuel injection pump

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5584824A (en) * 1978-12-16 1980-06-26 Bosch Gmbh Robert Fuel injector for diesel engine
JPS56136140U (en) * 1980-03-14 1981-10-15
JPS59157549U (en) * 1983-03-17 1984-10-23 マツダ株式会社 fuel injection pump
JPS6063042U (en) * 1983-10-05 1985-05-02 マツダ株式会社 diesel engine fuel injection pump

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02123276A (en) * 1988-10-31 1990-05-10 Hino Motors Ltd Fuel injection pressure controller

Also Published As

Publication number Publication date
JPH0444825Y2 (en) 1992-10-22

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