JP2017031918A5 - - Google Patents

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Publication number
JP2017031918A5
JP2017031918A5 JP2015154316A JP2015154316A JP2017031918A5 JP 2017031918 A5 JP2017031918 A5 JP 2017031918A5 JP 2015154316 A JP2015154316 A JP 2015154316A JP 2015154316 A JP2015154316 A JP 2015154316A JP 2017031918 A5 JP2017031918 A5 JP 2017031918A5
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JP
Japan
Prior art keywords
fuel
fuel injection
plunger
pump case
valve
Prior art date
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Application number
JP2015154316A
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Japanese (ja)
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JP2017031918A (en
JP6546807B2 (en
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Publication date
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Priority to JP2015154316A priority Critical patent/JP6546807B2/en
Priority claimed from JP2015154316A external-priority patent/JP6546807B2/en
Priority to CN201680018967.XA priority patent/CN107850026B/en
Priority to PCT/JP2016/071227 priority patent/WO2017022482A1/en
Priority to KR1020177026087A priority patent/KR102058785B1/en
Publication of JP2017031918A publication Critical patent/JP2017031918A/en
Publication of JP2017031918A5 publication Critical patent/JP2017031918A5/ja
Application granted granted Critical
Publication of JP6546807B2 publication Critical patent/JP6546807B2/en
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Claims (6)

ポンプケースと、
前記ポンプケース内に配置されるプランジャバレルと、
前記プランジャバレル内で軸心方向に沿って移動自在に支持されるプランジャと、
前記プランジャバレルと前記プランジャとにより燃料圧縮室を区画すると共に外部からの燃料を前記燃料圧縮室に吸入可能な吸入弁と、
を備え、
前記プランジャバレルと前記吸入弁は、前記ポンプケース内で長手方向に沿って直線状に配置されると共に、外壁面が前記ポンプケースの内壁面に支持され、
前記プランジャは、リターンスプリングにより前記燃料圧縮室から離間する第１方向に付勢支持され、前記リターンスプリングは、前記ポンプケースと前記プランジャとの間に配置される圧縮コイルばねであり、一端部が前記ポンプケースにおけるばね受け部に弾圧し、他端部が前記プランジャのばね受け部材に弾圧する、
ことを特徴とする燃料噴射ポンプ。 A pump case,
A plunger barrel disposed in the pump case;
A plunger supported movably along the axial direction in the plunger barrel;
A suction valve that divides a fuel compression chamber by the plunger barrel and the plunger and can suck fuel from the outside into the fuel compression chamber;
With
The plunger barrel and the suction valve are arranged linearly along the longitudinal direction in the pump case, and an outer wall surface is supported by the inner wall surface of the pump case ,
The plunger is urged and supported in a first direction away from the fuel compression chamber by a return spring, and the return spring is a compression coil spring disposed between the pump case and the plunger, and has one end portion. The spring receiving portion in the pump case is elastically pressed, and the other end is elastically pressed to the spring receiving member of the plunger.
A fuel injection pump characterized by that. 前記燃料圧縮室の燃料を外部に吐出可能な吐出弁を更に備え、前記プランジャバレルは、前記ポンプケースの内壁面に設けられたストッパにより前記第１方向への移動が拘束され、前記吸入弁と前記吐出弁が直線状に密着して配置された状態で、押え部材により圧縮保持されることを特徴とする請求項１に記載の燃料噴射ポンプ。 A discharge valve capable of discharging the fuel in the fuel compression chamber to the outside; and the plunger barrel is restrained from moving in the first direction by a stopper provided on an inner wall surface of the pump case; 2. The fuel injection pump according to claim 1 , wherein the discharge valve is compressed and held by a pressing member in a state where the discharge valve is arranged in a linear contact. 前記プランジャバレルと前記吸入弁と前記吐出弁は、最大外径寸法が同寸法に設定されることを特徴とする請求項２に記載の燃料噴射ポンプ。 The fuel injection pump according to claim 2 , wherein the plunger barrel, the intake valve, and the discharge valve have the same maximum outer diameter. 前記吸入弁は、外径が前記ポンプケースの内径より小さい小径部が設けられることで、前記小径部と前記ポンプケースとの間に燃料給排室が形成され、前記燃料給排室は、燃料吸入通路を介して前記燃料圧縮室に連通されることを特徴とする請求項１から請求項３のいずれか一項に記載の燃料噴射ポンプ。 The intake valve is provided with a small-diameter portion whose outer diameter is smaller than the inner diameter of the pump case, so that a fuel supply / discharge chamber is formed between the small-diameter portion and the pump case. 4. The fuel injection pump according to claim 1, wherein the fuel injection pump communicates with the fuel compression chamber via an intake passage. 5. 内燃機関の燃焼室に燃料を噴射する燃料噴射弁と、
前記燃料噴射弁に燃料を供給する請求項１から請求項４のいずれか一項に記載の燃料噴射ポンプと、
前記燃料噴射ポンプにおける前記プランジャの作動を制御する蓄圧管制弁装置と、
を備えることを特徴とする燃料噴射装置。 A fuel injection valve for injecting fuel into the combustion chamber of the internal combustion engine;
The fuel injection pump according to any one of claims 1 to 4 , wherein fuel is supplied to the fuel injection valve.
An accumulator control device for controlling the operation of the plunger in the fuel injection pump;
A fuel injection device comprising: 請求項５に記載の燃料噴射装置を備えることを特徴とする内燃機関。
An internal combustion engine comprising the fuel injection device according to claim 5 .
JP2015154316A 2015-08-04 2015-08-04 Fuel injection pump, fuel injection device, internal combustion engine Active JP6546807B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2015154316A JP6546807B2 (en) 2015-08-04 2015-08-04 Fuel injection pump, fuel injection device, internal combustion engine
CN201680018967.XA CN107850026B (en) 2015-08-04 2016-07-20 Fuel injection pump, fuel injection device, and internal combustion engine
PCT/JP2016/071227 WO2017022482A1 (en) 2015-08-04 2016-07-20 Fuel injection pump, fuel injection device, internal-combustion engine
KR1020177026087A KR102058785B1 (en) 2015-08-04 2016-07-20 Fuel injection pump, fuel injection device, internal-combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2015154316A JP6546807B2 (en) 2015-08-04 2015-08-04 Fuel injection pump, fuel injection device, internal combustion engine

Publications (3)

Publication Number Publication Date
JP2017031918A JP2017031918A (en) 2017-02-09
JP2017031918A5 true JP2017031918A5 (en) 2018-07-12
JP6546807B2 JP6546807B2 (en) 2019-07-17

Family

ID=57942877

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2015154316A Active JP6546807B2 (en) 2015-08-04 2015-08-04 Fuel injection pump, fuel injection device, internal combustion engine

Country Status (4)

Country Link
JP (1) JP6546807B2 (en)
KR (1) KR102058785B1 (en)
CN (1) CN107850026B (en)
WO (1) WO2017022482A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6568613B1 (en) 2018-03-09 2019-08-28 株式会社ジャパンエンジンコーポレーション Water injection pump
JP7190860B2 (en) * 2018-10-05 2022-12-16 株式会社ジャパンエンジンコーポレーション Water injection pump

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03168355A (en) * 1989-11-29 1991-07-22 Zexel Corp Fuel injection pump
JP3309765B2 (en) * 1997-05-16 2002-07-29 三菱電機株式会社 High pressure fuel supply pump
JP2003097386A (en) * 2001-09-27 2003-04-03 Mitsubishi Electric Corp High-pressure fuel feeder
JP5255400B2 (en) * 2008-10-27 2013-08-07 ヤンマー株式会社 Fuel injection pump
JP2010275874A (en) * 2009-05-26 2010-12-09 Denso Corp Fuel injection pump
IT1396143B1 (en) * 2009-11-03 2012-11-16 Magneti Marelli Spa FUEL PUMP WITH REDUCED WEAR ON A GASKET FOR A DIRECT INJECTION SYSTEM
JP2013133782A (en) * 2011-12-27 2013-07-08 Mitsubishi Heavy Ind Ltd Fuel injection device for diesel engine, diesel engine with the same, and ship
JP5519857B1 (en) * 2013-12-26 2014-06-11 三井造船株式会社 Low-temperature liquefied gas suction / discharge valve body, reciprocating pump, and fuel gas supply device

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