JPH0278764U - - Google Patents

Info

Publication number
JPH0278764U
JPH0278764U JP13614589U JP13614589U JPH0278764U JP H0278764 U JPH0278764 U JP H0278764U JP 13614589 U JP13614589 U JP 13614589U JP 13614589 U JP13614589 U JP 13614589U JP H0278764 U JPH0278764 U JP H0278764U
Authority
JP
Japan
Prior art keywords
suction
overflow hole
pump plunger
pump
control groove
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
JP13614589U
Other languages
Japanese (ja)
Other versions
JPH0754618Y2 (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
Publication of JPH0278764U publication Critical patent/JPH0278764U/ja
Application granted granted Critical
Publication of JPH0754618Y2 publication Critical patent/JPH0754618Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/20—Varying fuel delivery in quantity or timing
    • F02M59/24—Varying fuel delivery in quantity or timing with constant-length-stroke pistons having variable effective portion of stroke
    • F02M59/26—Varying fuel delivery in quantity or timing with constant-length-stroke pistons having variable effective portion of stroke caused by movements of pistons relative to their cylinders
    • F02M59/265—Varying fuel delivery in quantity or timing with constant-length-stroke pistons having variable effective portion of stroke caused by movements of pistons relative to their cylinders characterised by the arrangement or form of spill port of spill contour on the piston
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/001—Pumps with means for preventing erosion on fuel discharge

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Description

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

図面は公知の吸入兼溢流孔及び本考案による吸
入兼溢流孔の実施例を示すもので、第１図は公知
の吸入兼溢流孔範囲におけるポンププランジヤブ
シユの軸方向部分断面図、第２図は第１図による
矢印の方向から見た図、第３図は本考案による
吸入兼溢流孔範囲におけるポンププランジヤブシ
ユの軸方向部分断面図、第４図は第３図による矢
印の方向から見た図、第５図は圧力値とピスト
ン行程との関係を示す線図、第６図は本考案によ
る燃料噴射ポンプのポンプ部材を部分的に軸方向
に断面して示す図である。 １……吸入兼溢流孔、２……ポンププランジヤ
ブシユ、３……早期制御溝、４……軸線、５……
円筒状範囲、６……円錐状範囲、７……自由筒所
、８……吸入兼溢流室、９……吸入兼溢流孔、１
０……ポンププランジヤブシユ、１１……早期制
御溝、１２……底部、１３……軸線、１４……円
筒状範囲、１５……横断面、１６……早期に生じ
た燃料噴流の方向を示す矢印、１７……吸入兼溢
流室、１８……ポンプケーシング、１９……ポン
ププランジヤ、２０……作業室、２１……圧力弁
、２２……供給通路、２３……中間部材、２４…
…圧力弁ケーシング、２５……ねじ、２６，２７
……制御縁部。 The drawings show a known suction and overflow hole and an embodiment of the suction and overflow hole according to the present invention. Fig. 2 is a view seen from the direction of the arrow in Fig. 1, Fig. 3 is a partial axial cross-sectional view of the pump plunger bushing in the area of the suction and overflow hole according to the present invention, and Fig. 4 is an arrow shown in Fig. 3. FIG. 5 is a diagram showing the relationship between pressure value and piston stroke, and FIG. 6 is a partially axial cross-sectional view of the pump member of the fuel injection pump according to the present invention. be. 1... Suction and overflow hole, 2... Pump plunger bush, 3... Early control groove, 4... Axis line, 5...
Cylindrical range, 6... Conical range, 7... Free tube place, 8... Suction and overflow chamber, 9... Suction and overflow hole, 1
0...Pump plunger bush, 11...Early control groove, 12...Bottom, 13...Axis, 14...Cylindrical range, 15...Cross section, 16...Direction of fuel jet generated early Arrows shown, 17... Suction and overflow chamber, 18... Pump casing, 19... Pump plunger, 20... Working chamber, 21... Pressure valve, 22... Supply passage, 23... Intermediate member, 24...
...Pressure valve casing, 25...Screw, 26, 27
...control edge.

Claims (1)

【実用新案登録請求の範囲】 １ 内燃機関のための燃料噴射ポンプであつて、
少なくとも１つの吸入兼溢流孔がポンププランジ
ヤブシユに形成されており、かつ供給開始時には
ポンププランジヤの上側の制御縁部によつて閉鎖
され、供給終了時にはポンププランジヤの下側の
制御縁部によつて開放されるようになつており、
吸入兼溢流孔の壁部の、上側の制御縁部とは反対
側の下方側に早期制御溝が形成されており、ポン
ププランジヤの下側の制御縁部がまず早期制御溝
上を滑走し、その後吸入兼溢流孔の主横断面上を
滑走する形式のものにおいて、早期制御溝１１の
底部１２が、ポンププランジヤ１９による滑走面
から離れる方向で上方へ向かつて傾斜して延びて
いることを特徴とする、内燃機関のための燃料噴
射ポンプ。 ２ 早期制御溝１１の底部１２が、吸入兼溢流孔
９の軸線１３に対して５°〜４５°の角度αを成
すように、傾斜していることを特徴とする請求項
１記載の燃料噴射ポンプ。 ３ 早期制御溝１１が吸入兼溢流孔９の円筒状範
囲１４の一部だけにわたつて延びていることを特
徴とする請求項１又は２記載の燃料噴射ポンプ。[Claims for Utility Model Registration] 1. A fuel injection pump for an internal combustion engine, which
At least one suction and overflow hole is formed in the pump plunger bushing and is closed by the upper control edge of the pump plunger at the beginning of delivery and by the lower control edge of the pump plunger at the end of delivery. It is becoming more and more open,
An early control groove is formed on the lower side of the wall of the suction and overflow hole opposite to the upper control edge, and the lower control edge of the pump plunger first slides over the early control groove; In the case of the type that subsequently slides on the main cross section of the suction/overflow hole, it is noted that the bottom part 12 of the early control groove 11 extends upwardly in a direction away from the sliding surface by the pump plunger 19. A fuel injection pump for internal combustion engines. 2. The fuel according to claim 1, characterized in that the bottom part 12 of the early control groove 11 is inclined so as to form an angle α of 5° to 45° with respect to the axis 13 of the suction/overflow hole 9. injection pump. 3. Fuel injection pump according to claim 1, characterized in that the early control groove (11) extends over only a part of the cylindrical area (14) of the suction/overflow hole (9).
JP13614589U 1988-11-26 1989-11-27 Fuel injection pump for internal combustion engine Expired - Lifetime JPH0754618Y2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3840022.7 1988-11-26
DE19883840022 DE3840022A1 (en) 1988-11-26 1988-11-26 FUEL INJECTION PUMP FOR INJECTION COMBUSTION ENGINES

Publications (2)

Publication Number Publication Date
JPH0278764U true JPH0278764U (en) 1990-06-18
JPH0754618Y2 JPH0754618Y2 (en) 1995-12-18

Family

ID=6367986

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13614589U Expired - Lifetime JPH0754618Y2 (en) 1988-11-26 1989-11-27 Fuel injection pump for internal combustion engine

Country Status (3)

Country Link
EP (1) EP0372211B1 (en)
JP (1) JPH0754618Y2 (en)
DE (2) DE3840022A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005085626A1 (en) * 2004-03-05 2005-09-15 Bosch Corporation Fuel injection pump for internal combustion engine

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4227854B4 (en) * 1992-08-22 2005-12-15 Robert Bosch Gmbh Fuel injection pump for internal combustion engines
RU2258831C1 (en) * 2004-04-19 2005-08-20 Федеральное государственное образовательное учреждение высшего профессионального образования Воронежский государственный аграрный университет им. К.Д. Глинки Plunger pair
DE102008027651A1 (en) * 2008-06-10 2009-12-17 Man Diesel Se Injection pump for an internal combustion engine and internal combustion engine with injection pump

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK94066C (en) * 1958-10-21 1962-08-06 Burmeister & Wains Mot Mask Fuel injection system for internal combustion engines.
NL125952C (en) * 1964-04-21
GB1322694A (en) * 1970-06-22 1973-07-11 Nippon Denso Co Fuel injection pumps for internal combustion engines

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005085626A1 (en) * 2004-03-05 2005-09-15 Bosch Corporation Fuel injection pump for internal combustion engine
CN100443715C (en) * 2004-03-05 2008-12-17 博世株式会社 Fuel injection pumps for internal combustion engines

Also Published As

Publication number Publication date
JPH0754618Y2 (en) 1995-12-18
EP0372211B1 (en) 1992-06-17
DE3840022A1 (en) 1990-05-31
DE58901695D1 (en) 1992-07-23
EP0372211A1 (en) 1990-06-13

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term