JP6976209B2 - プランジャポンプ - Google Patents
プランジャポンプ Download PDFInfo
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- JP6976209B2 JP6976209B2 JP2018062042A JP2018062042A JP6976209B2 JP 6976209 B2 JP6976209 B2 JP 6976209B2 JP 2018062042 A JP2018062042 A JP 2018062042A JP 2018062042 A JP2018062042 A JP 2018062042A JP 6976209 B2 JP6976209 B2 JP 6976209B2
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- JP
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- Prior art keywords
- plunger
- inner peripheral
- suction
- pressurizing chamber
- peripheral wall
- Prior art date
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- 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
- F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
-
- 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
- F02M55/04—Means for damping vibrations or pressure fluctuations in injection pump inlets or outlets
-
- 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
- F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
- F02M59/366—Valves being actuated electrically
- F02M59/368—Pump inlet valves being closed when actuated
-
- 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
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or 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
- 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
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
- F02M59/442—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston means preventing fuel leakage around pump plunger, e.g. fluid barriers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/0404—Details or component parts
- F04B1/0421—Cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/122—Details or component parts, e.g. valves, sealings or lubrication means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/14—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
- F04B1/141—Details or component parts
- F04B1/143—Cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
- F04B53/162—Adaptations of cylinders
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/04—Fuel-injection apparatus having means for avoiding effect of cavitation, e.g. erosion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/0404—Details or component parts
- F04B1/0439—Supporting or guiding means for the pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B11/00—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
- F04B11/0008—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using accumulators
- F04B11/0016—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using accumulators with a fluid spring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B11/00—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
- F04B11/0091—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using a special shape of fluid pass, e.g. throttles, ducts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B7/00—Piston machines or pumps characterised by having positively-driven valving
- F04B7/0076—Piston machines or pumps characterised by having positively-driven valving the members being actuated by electro-magnetic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
- F04B9/04—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
- F04B9/042—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms the means being cams
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fuel-Injection Apparatus (AREA)
- Details Of Reciprocating Pumps (AREA)
Description
図1は、本実施形態のプランジャポンプ1の概略構成を示す断面図である。この図に示すように、本実施形態のプランジャポンプ1は、ボディ2と、吸入機構3と、昇圧機構4と、吐出機構5と、ダンパ機構6とを備えている。なお、以下の説明では、燃料の昇圧を行うプランジャの軸芯を中心軸Lとし、この中心軸Lと直交する方向を径方向と称し、径方向における中心軸L側を径方向内側、径方向における中心軸Lと反対側を径方向外側と称する。また、プランジャポンプ1の設置姿勢は限定されないものの、説明の便宜上、図1における上側を上方、図1における下側を下方と称する。
図3(a)に示すように、加圧室R3の内周面に凹部2c(拡大間隙部)が形成されている。この凹部2cは、後述する昇圧プランジャ4bの周方向において吸入機構3と吐出機構5から離れた最もキャビテーションの発生しやすい位置であって、昇圧プランジャ4bの中心軸Lを含み吸入機構3の中心を通る平面を挟んで対向する2か所に設けられている。このような凹部2cは、昇圧プランジャ4bの中心軸Lに垂直な面によって切断される形状が円弧状となるような曲面を有している。なお、この凹部2cは、昇圧プランジャ4bの加圧室R3側端部の上死点から下死点までの間の少なくとも一部に連なって加圧室R3に露出するように形成されている。
さらに、凹部2cは、局所的な窪みであるため、デッドボリュームの増大を最小限に抑制することができる。
上記第1実施形態に係るプランジャポンプ1の変形例を第2実施形態として説明する。なお、同一の機構については符号を同一とし、説明を省略する。
上記第1実施形態に係るプランジャポンプ1の変形例を第3実施形態として説明する。なお、同一の機構については符号を同一とし、説明を省略する。
上記第1実施形態に係るプランジャポンプ1の変形例を第4実施形態として説明する。なお、同一の機構については符号を同一とし、説明を省略する。
上記第1実施形態に係るプランジャポンプ1の変形例を第5実施形態として説明する。なお、同一の機構については符号を同一とし、説明を省略する。
2……ボディ
2a……囲壁部
4……昇圧機構
4a……バレル
4b……昇圧プランジャ
R3……加圧室
R5……貫通空間
Claims (8)
- 筒状の内周壁を持つ加圧室と、ガイド部により前記内周壁が延在する向きに摺動自在に保持された略円筒形状の外周面をもつプランジャとを備えるプランジャポンプであって、
前記内周壁は、前記プランジャの軸芯を中心とする周方向の一部に、前記加圧室に連通しかつ前記加圧室に燃料を取り込むための吸入開口を有し、
前記周方向における、前記吸入開口の形成位置を避けた位置の少なくとも一部に、前記吸入開口の形成位置におけるプランジャ周面から内周壁内周面までの前記プランジャの径方向の寸法よりも寸法が大きな拡大間隙部が形成されている
ことを特徴とするプランジャポンプ。 - 前記内周壁は、前記吸入開口の形成位置に対して前記プランジャを挟んで対向する位置に前記加圧室から燃料を吐出するための吐出開口を有し、
前記加圧室は、前記プランジャの軸芯に直交する断面形状が楕円形状とされ、
前記吸入開口及び前記吐出開口は、前記内周壁の短軸側に設けられ、
前記楕円形状の長軸側の内周壁と前記プランジャ外周面との間隔が前記拡大間隙部となる
ことを特徴とする請求項1記載のプランジャポンプ。 - 前記プランジャは、前記プランジャの軸芯が前記加圧室の中心を基準として前記吸入開口側に偏心して配置されることを特徴とする請求項2記載のプランジャポンプ。
- 前記内周壁は、前記プランジャの軸芯に直交する断面形状が円形状とされ、
前記プランジャの軸芯は、前記円形状の中心を基準として前記吸入開口側に偏心して配置される
ことを特徴とする請求項1記載のプランジャポンプ。 - 前記拡大間隙部は、前記内周壁に形成される凹部であることを特徴とする請求項1記載のプランジャポンプ。
- 前記内周壁には前記加圧室から燃料を吐出するための吐出開口が設けられ、
前記凹部は、前記周方向において前記吸入開口と前記吐出開口との間に設けられることを特徴とする請求項5記載のプランジャポンプ。 - 前記凹部は、前記周方向において、前記吸入開口より前記吐出開口に近い領域に設けられることを特徴とする請求項6記載のプランジャポンプ。
- 前記吸入開口と前記吐出開口とは、前記プランジャの軸芯を挟んで対向しない位置に設けられ、
前記凹部は、前記内周壁の内周面に形成されると共に、前記周方向において、前記吸入開口または前記吐出開口に対して前記プランジャの軸芯を挟んで対向する位置に設けられることを特徴とする請求項6または7に記載のプランジャポンプ。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2018062042A JP6976209B2 (ja) | 2018-03-28 | 2018-03-28 | プランジャポンプ |
CN201910231290.3A CN110318925B (zh) | 2018-03-28 | 2019-03-26 | 柱塞泵 |
US16/364,702 US10907597B2 (en) | 2018-03-28 | 2019-03-26 | Plunger pump |
DE102019107723.0A DE102019107723A1 (de) | 2018-03-28 | 2019-03-26 | Plungerpumpe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2018062042A JP6976209B2 (ja) | 2018-03-28 | 2018-03-28 | プランジャポンプ |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2019173639A JP2019173639A (ja) | 2019-10-10 |
JP6976209B2 true JP6976209B2 (ja) | 2021-12-08 |
Family
ID=67909732
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2018062042A Active JP6976209B2 (ja) | 2018-03-28 | 2018-03-28 | プランジャポンプ |
Country Status (4)
Country | Link |
---|---|
US (1) | US10907597B2 (ja) |
JP (1) | JP6976209B2 (ja) |
CN (1) | CN110318925B (ja) |
DE (1) | DE102019107723A1 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7139974B2 (ja) * | 2019-01-25 | 2022-09-21 | 株式会社デンソー | 燃料噴射ポンプ |
IT201900024199A1 (it) * | 2019-12-17 | 2021-06-17 | Mixtron S R L | Pompa a pistoni assiali a piatto inclinato |
KR102417695B1 (ko) * | 2020-11-10 | 2022-07-07 | 주식회사 현대케피코 | 고압 연료펌프의 방사소음 저감을 위한 댐퍼스프링 구조 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3121317C2 (de) * | 1981-05-29 | 1984-10-18 | Erich 4902 Bad Salzuflen Bröker | Abdichtung hin- und hergehender Maschinenteile, insbesondere Plungerdichtung |
FR2573136B1 (fr) * | 1984-11-15 | 1989-03-31 | Schlumberger Cie Dowell | Procede d'observation des caracteristiques de pompage sur une pompe a deplacement positif et pompe permettant de mettre en oeuvre ce procede. |
IT1218675B (it) * | 1987-08-25 | 1990-04-19 | Weber Srl | Pompa a stantuffi radiali in particolare pompa per l'iniezione di combustibile in motori a ciclo diesel |
US6623259B1 (en) * | 2002-05-06 | 2003-09-23 | George H. Blume | High pressure plunger pump housing and packing |
US6910871B1 (en) * | 2002-11-06 | 2005-06-28 | George H. Blume | Valve guide and spring retainer assemblies |
US8366402B2 (en) * | 2005-12-20 | 2013-02-05 | Schlumberger Technology Corporation | System and method for determining onset of failure modes in a positive displacement pump |
JP4650403B2 (ja) * | 2006-11-27 | 2011-03-16 | 株式会社デンソー | サプライポンプ |
JP5039507B2 (ja) | 2007-10-31 | 2012-10-03 | 日立オートモティブシステムズ株式会社 | 高圧燃料供給ポンプおよびその製造方法 |
US9377019B1 (en) * | 2012-05-07 | 2016-06-28 | George H Blume | Opposing offset fluid end bores |
DE102013205075A1 (de) * | 2012-06-21 | 2013-12-24 | Continental Teves Ag & Co. Ohg | Kolbenpumpe |
US20170082103A1 (en) * | 2014-05-23 | 2017-03-23 | Fmc Technologies, Inc. | Reciprocating pump with improved fluid cylinder cross-bore geometry |
US10247177B2 (en) * | 2015-07-13 | 2019-04-02 | Purdue Research Foundation | Positive displacement machines and methods of increasing load-carrying capacities thereof |
JP6544333B2 (ja) | 2016-10-13 | 2019-07-17 | トヨタ自動車株式会社 | コミュニケーション装置 |
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2018
- 2018-03-28 JP JP2018062042A patent/JP6976209B2/ja active Active
-
2019
- 2019-03-26 CN CN201910231290.3A patent/CN110318925B/zh active Active
- 2019-03-26 US US16/364,702 patent/US10907597B2/en active Active
- 2019-03-26 DE DE102019107723.0A patent/DE102019107723A1/de active Pending
Also Published As
Publication number | Publication date |
---|---|
CN110318925A (zh) | 2019-10-11 |
US10907597B2 (en) | 2021-02-02 |
US20190301413A1 (en) | 2019-10-03 |
DE102019107723A1 (de) | 2019-10-02 |
CN110318925B (zh) | 2022-10-14 |
JP2019173639A (ja) | 2019-10-10 |
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