JP2017008806A - 高圧ポンプ - Google Patents
高圧ポンプ Download PDFInfo
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- JP2017008806A JP2017008806A JP2015124878A JP2015124878A JP2017008806A JP 2017008806 A JP2017008806 A JP 2017008806A JP 2015124878 A JP2015124878 A JP 2015124878A JP 2015124878 A JP2015124878 A JP 2015124878A JP 2017008806 A JP2017008806 A JP 2017008806A
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- 239000000446 fuel Substances 0.000 claims abstract description 77
- 238000011144 upstream manufacturing Methods 0.000 claims description 18
- 238000007599 discharging Methods 0.000 claims 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 abstract description 5
- 230000002159 abnormal effect Effects 0.000 abstract description 4
- 238000000926 separation method Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002828 fuel tank Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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Classifications
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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
- F02M59/20—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
- F02M59/361—Valves being actuated mechanically
-
- 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
- F04B53/10—Valves; Arrangement of valves
-
- 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
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/04—Feeding by means of driven pumps
- F02M37/043—Arrangements for driving reciprocating piston-type pumps
-
- 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
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/04—Feeding by means of driven pumps
- F02M37/08—Feeding by means of driven pumps electrically driven
-
- 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
- F02M59/10—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 characterised by the piston-drive
- F02M59/102—Mechanical drive, e.g. tappets or cams
-
- 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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
- F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
- F02M63/005—Pressure relief valves
-
- 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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
- F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
-
- 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
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/05—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by internal-combustion engines
-
- 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
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/08—Regulating by delivery pressure
-
- 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
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
- F04B49/24—Bypassing
-
- 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
- F04B53/14—Pistons, piston-rods or piston-rod connections
-
- 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
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
-
- 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
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Safety Valves (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
このようにすると、下流流路が異常高圧になった際に、弁部材は弁座から離座し、流入口を開放する。そして、流入口を開放されてから、付勢部材が密着しても流出口は開放されず、下流流路の燃料は上流流路に流れることを抑制されたままである。そのため、付勢部材が密着状態となった後も、下流流路の燃料の圧力によって、付勢部材には離座方向に力が与えられる。従って、例えば付勢部材が破損し、弁部材を着座方向に付勢する力が弱まる。その結果、弁部材は一旦開弁すると下流流路の圧力によって、開放されやすくなる。
燃料を貯溜する燃料タンク30内には、燃料を汲み上げる低圧ポンプ31が設置されている。この低圧ポンプ31は、バッテリ(図示せず)を電源とする電動モータ(図示せず)によって駆動される。この低圧ポンプ31から吐出される燃料は、低圧流路33を通り高圧ポンプ10に供給される。なお、本実施形態において低圧流路33は、上流流路である。なお、本実施形態における高圧ポンプ10は、車両に搭載される高圧ポンプ10である。
第2実施形態では、上記第1実施形態と異なり、弁部材71が弁座734に着座している際における、保持部材72の着座方向の端部と弁部材71の離座方向の端部との間の隙間の距離D2は、流出口形成部733の着座方向の端部から外壁面712の着座方向の端部までの距離D1に比べて大きい。
第3実施形態の圧力調整部70は、図5に示すように、ボディ部73の内側かつ、保持部材72より離座方向に規制部739が設けられている。そのため、保持部材72が離座方向に、過度に移動されてしまうことを、規制部739が抑制することが出来る。これによって、弁部材71が一旦開弁した後、次に弁部材71が開弁する圧力を、最初に開弁する上限圧力より低い範囲で、任意に設定することができる。
図6に示すように、上記第2実施形態において、保持部材72の離座方向の端面に切欠き721を形成するようにしてもよい。すなわち、保持部材72の付勢部材77が設けられている部分に、切欠き721が形成されている。
Claims (5)
- プランジャ(41)の移動によって容積変化し燃料を加圧可能な加圧室(42)を形成する加圧部(40)と、
前記加圧室にて加圧される燃料を、下流側の空間である下流流路(34)へ吐出する吐出部(60)と、
前記下流流路から前記吐出部より上流側の空間である上流流路(33)へ燃料が流れるリリーフ流路(731a)を形成するリリーフ流路形成部(731)、前記リリーフ流路と前記下流流路とを繋ぐ流入口(732a)を形成する流入口形成部(732)、前記流入口の径外側に環状に形成される弁座(734)、及び、前記リリーフ流路と前記上流流路とを繋ぐ流出口(733a)を形成する流出口形成部(733)を有するボディ部(73)と、
外壁が前記ボディ部の内壁に摺接しつつ前記ボディ部内を往復移動可能に設けられ、前記弁座(734)に着座することで前記流入口を塞ぎ、前記下流流路の圧力が所定圧以上になると前記弁座から離座することで前記流入口を開く弁部材(71)と、
前記弁座に着座した状態における前記弁部材から離座方向に所定距離隔てて設けられ、外壁が前記ボディ部の内壁に接する保持部材(72)と、
一端が前記弁部材に当接し、他端が前記保持部材に当接し、前記弁部材を前記弁座側に付勢する付勢部材(77)と、を備え、
前記流出口は、前記流入口より前記離座方向に形成され、
前記弁部材は、前記流出口を塞ぐ外壁面(712)を有し、
前記弁部材が前記弁座に着座している際における、前記外壁面の前記着座方向の端部と前記流出口形成部の前記着座方向の端部との距離(D1)は、前記弁部材と前記保持部材との間の隙間の距離(D2)に比べて長いことを特徴とする高圧ポンプ(10)。 - 前記弁部材が前記弁座に着座している際に、前記保持部材と前記弁部材との間の隙間は、前記流出口と連通していることを特徴とする、請求項1に記載の高圧ポンプ。
- 前記保持部材から前記離座方向に所定距離離れた位置に設けられ、前記保持部材の前記離座方向への移動を規制する規制部を備える請求項1または2に記載の高圧ポンプ。
- プランジャ(41)の移動によって容積変化し燃料を加圧可能な加圧室(42)を形成する加圧部(40)と、
前記加圧室にて加圧される燃料を、下流側の空間である下流流路へ吐出する吐出部(60)と、
前記下流流路から前記吐出部より上流側の空間である上流流路へ燃料が流れるリリーフ流路(731a)を形成するリリーフ流路形成部(731)、前記リリーフ流路と前記下流流路とを繋ぐ流入口(732a)を形成する流入口形成部(732)、前記流入口の径外側に環状に形成される弁座(734)、及び、前記リリーフ流路と前記上流流路とを繋ぐ流出口(733a)を形成する流出口形成部(733)を有するボディ部(73)と、
外壁が前記ボディ部の内壁に摺接しつつ前記ボディ部内を往復移動可能に設けられ、前記弁座(734)に着座することで前記流入口を塞ぎ、前記下流流路の圧力が所定圧以上になると前記弁座から離座することで前記流入口を開く弁部材(71)と、
前記弁座に着座した状態における前記弁部材から、離座方向に所定距離隔てて設けられ、外壁が前記ボディ部の内壁に接する保持部材(72)と、
一端が前記弁部材に当接し、他端が前記保持部材に当接し、前記弁部材を前記弁座側に付勢する付勢部材(77)と、を備え、
前記流出口は、前記流入口より前記離座方向に形成され、
前記弁部材は、前記流出口を塞ぐ外壁面(712)を有し、
前記弁部材が前記弁座に着座している際における、前記外壁面の前記着座方向の端部と前記流出口形成部の前記着座方向の端部との距離(D1)は、前記弁部材が前記弁座に着座している際における前記付勢部材の長さ(D3)と前記付勢部材の密着高さ(D4)との差に比べて、長いことを特徴とする高圧ポンプ(10)。 - 前記保持部材は、前記付勢部材が当接する当接部を有し、
前記当接部は、板厚方向にへこむ溝、または板厚方向に貫通する孔が設けられていることを特徴とする、請求項4に記載の高圧ポンプ。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015124878A JP2017008806A (ja) | 2015-06-22 | 2015-06-22 | 高圧ポンプ |
DE102016110926.6A DE102016110926B4 (de) | 2015-06-22 | 2016-06-15 | Hochdruckpumpe |
US15/188,118 US20160369791A1 (en) | 2015-06-22 | 2016-06-21 | High pressure pump |
CN201610457470.XA CN106257042A (zh) | 2015-06-22 | 2016-06-22 | 高压泵 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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JP2015124878A JP2017008806A (ja) | 2015-06-22 | 2015-06-22 | 高圧ポンプ |
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JP2017008806A true JP2017008806A (ja) | 2017-01-12 |
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JP2015124878A Pending JP2017008806A (ja) | 2015-06-22 | 2015-06-22 | 高圧ポンプ |
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US (1) | US20160369791A1 (ja) |
JP (1) | JP2017008806A (ja) |
CN (1) | CN106257042A (ja) |
DE (1) | DE102016110926B4 (ja) |
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JP5198511B2 (ja) * | 2010-06-29 | 2013-05-15 | 株式会社デンソー | 定残圧弁 |
JP5653288B2 (ja) | 2011-04-27 | 2015-01-14 | 株式会社デンソー | 定残圧弁 |
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2015
- 2015-06-22 JP JP2015124878A patent/JP2017008806A/ja active Pending
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2016
- 2016-06-15 DE DE102016110926.6A patent/DE102016110926B4/de active Active
- 2016-06-21 US US15/188,118 patent/US20160369791A1/en not_active Abandoned
- 2016-06-22 CN CN201610457470.XA patent/CN106257042A/zh active Pending
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JPS53138523A (en) * | 1977-05-09 | 1978-12-04 | Kubota Ltd | Pressure controlling device |
JP2008157252A (ja) * | 2008-01-21 | 2008-07-10 | Hitachi Ltd | 燃料ポンプ |
JP2011220394A (ja) * | 2010-04-06 | 2011-11-04 | Toyota Motor Corp | リリーフバルブ、並びに同リリーフバルブを具備する潤滑油供給装置及び油圧供給装置及びポンプユニット |
WO2013093179A1 (en) * | 2011-12-22 | 2013-06-27 | Wärtsilä Finland Oy | A safety valve arrangement for a common rail fuel injection system and a common rail fuel injection system |
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JP2014105669A (ja) * | 2012-11-29 | 2014-06-09 | Hitachi Automotive Systems Ltd | 高圧燃料供給ポンプ |
Also Published As
Publication number | Publication date |
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DE102016110926A1 (de) | 2016-12-22 |
DE102016110926B4 (de) | 2022-06-30 |
US20160369791A1 (en) | 2016-12-22 |
CN106257042A (zh) | 2016-12-28 |
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