TW200525083A - Fuel pump group with variable flow rate - Google Patents

Fuel pump group with variable flow rate Download PDF

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Publication number
TW200525083A
TW200525083A TW094100314A TW94100314A TW200525083A TW 200525083 A TW200525083 A TW 200525083A TW 094100314 A TW094100314 A TW 094100314A TW 94100314 A TW94100314 A TW 94100314A TW 200525083 A TW200525083 A TW 200525083A
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Taiwan
Prior art keywords
pump
pump set
patent application
power unit
item
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Application number
TW094100314A
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English (en)
Inventor
Maurizio Marcacci
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Piaggio & C Spa
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Publication of TW200525083A publication Critical patent/TW200525083A/zh

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/14Arrangements of injectors with respect to engines; Mounting of injectors
    • F02M61/145Arrangements of injectors with respect to engines; Mounting of injectors the injection nozzle opening into the air intake conduit
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10Air intakes; Induction systems
    • F02M35/10006Air intakes; Induction systems characterised by the position of elements of the air intake system in direction of the air intake flow, i.e. between ambient air inlet and supply to the combustion chamber
    • F02M35/10078Connections of intake systems to the engine
    • F02M35/10085Connections of intake systems to the engine having a connecting piece, e.g. a flange, between the engine and the air intake being foreseen with a throttle valve, fuel injector, mixture ducts or the like
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10Air intakes; Induction systems
    • F02M35/10209Fluid connections to the air intake system; their arrangement of pipes, valves or the like
    • F02M35/10216Fuel injectors; Fuel pipes or rails; Fuel pumps or pressure regulators
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10Air intakes; Induction systems
    • F02M35/10242Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
    • F02M35/10288Air intakes combined with another engine part, e.g. cylinder head cover or being cast in one piece with the exhaust manifold, cylinder head or engine block
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M57/00Fuel-injectors combined or associated with other devices
    • F02M57/02Injectors structurally combined with fuel-injection pumps
    • F02M57/022Injectors structurally combined with fuel-injection pumps characterised by the pump drive
    • F02M57/023Injectors structurally combined with fuel-injection pumps characterised by the pump drive mechanical
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/02Pumps 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
    • F02M59/10Pumps 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
    • F02M59/102Mechanical drive, e.g. tappets or cams
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44Details, 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44Details, 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
    • F02M59/46Valves
    • F02M59/462Delivery valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M69/00Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/02Pumps peculiar thereto
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M69/00Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/14Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel having cyclically-operated valves connecting injection nozzles to a source of fuel under pressure during the injection period
    • F02M69/145Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel having cyclically-operated valves connecting injection nozzles to a source of fuel under pressure during the injection period the valves being actuated electrically

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Reciprocating Pumps (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)
  • Control Of The Air-Fuel Ratio Of Carburetors (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Description

200525083 九、發明說明: 【發明所屬之技術領域】 本發明爲關於具可變流速之一燃料泵組,且特別地關於 一用於四衝程引擎應用之具可變流速之一燃料泵組。 【先前技術】 在四輪車輛領域中,已知使用配備直接或間接噴射饋入 系統之四衝程引擎以於得到相同產出時減少有害排出物。 直接噴射系統爲燃料在汽缸中(或直接在燃燒室)以一個 或多個正確導向之噴嘴形式被射出,其中間接噴射系統爲以 一適當霧化噴射方式預見燃料噴射進入燃燒室之吸入導管 上游。 在此第二類型系統中,汽油饋入至噴射器利用一位於貯 油器內之一電子泵而發生。 此等泵組,雖然它爲一可應用之解決方案,但非用於二 輪車輛饋入噴射器之最佳方案,因一電子泵之高成本使它不 會有利於二輪車輛上,且因爲此等泵組之作動將需要相當之 電流消耗,摩托車電池特別是低汽缸容量電池並無法供應。 根據以上,它係清楚的對,如根據本發明之泵組,可最 小化成本與電力消耗之泵組有一需求。 【發明內容】 因此,本發明之目的爲藉提供不需消耗電力且同時可靠與 安全的泵組而解決先前技藝之問題。 本發明之另一目的爲提供一泵組其可使因不純度而於形 成饋入系統部分之各種管路的連接操作中滲進導管之污染 200525083 危險被除去或至少被減低。 本發明之另一目的爲提供一泵組其可限制再循環、汽油之 再加熱與所謂的蒸氣鎖(V a ρ 〇 r 1 〇 c k)之形成,其係種發生於 在引擎蓋下高溫時包含由饋入系統管路中蒸氣泡所形成之 現象。 最後,本發明之進一步目的爲製造一泵組其係可容易與節 省成本的製造。 這些與其他目的藉依據具有所附第1項申請專利範圍之 本發明的饋入系統被實現。 本發明之其他特色將藉接下來之申請專利範圍來強調。 【實施方式】 大體地,依據本發明一種用於四衝程噴射引擎之燃料饋 入系統之泵組爲一安裝在引擎之一機械式泵組。 依據本發明之一有利觀點,泵組被直接安裝於動力單元 之頂部上。 參考這些圖示,依據本發明用於四衝程噴射引擎之燃料 饋入系統之一燃料泵組1被顯示。 如第1圖中所見,泵組i爲機械式且根據一較佳實施例 它被安裝於動力單元100上且特別在動力單元本身之頂部 依據第1至5圖中較佳實施例之泵組〗具有一由壓鑄製 成之包圍(containment)本體50、一機械式饋入泵2、一位於 一相對殻體4內部之噴射器8,與一位於該相對殼體5內部 之壓力調節器。 200525083 泵2與噴射器8藉一置於用以螺接噴射器至包圍本體50 之一支架9內部之連通導管7被連通放置。 包圍本體50如先前所描述被直接安裝於動力單元100之 頂部51上。 詳細地,包圍本體50藉螺絲52被安裝於動力單元100 之頂部上,安置一熱絕緣集管(headeOlO於動力單元100之 頂部51與包圍本體50間。 泵2,從第1圖中可較佳見到,從由一安置於引擎凸輪軸 上之偏心輪1 2所形成之一汽門閥驅動式(d e s m 〇 d r 〇 m i c)系統 1 1,與從與偏心輪1 2嚙合之一叉桿1 3產生交互的移動,將 於以下說明。 叉桿1 3,可再次從這些圖中見到,經由一合適的夾螺絲, 在14被旋轉樞接至動力單元100之頂部51。 泵2由一汽缸16-活塞15組所組成,其中活塞15藉叉桿 1 3所致動之一軸1 8所致動。 詳細地,叉桿1 3具有一突出物抵接軸1 8之基座以引導 軸1 8之衝程,且結果地關於汽缸1 6活塞1 5之衝程,介於 軸1 8與叉桿1 3間之接觸藉合適的彈性裝置如螺旋彈簧1 9 而被確保。 連結於汽缸1 6與活塞1 5間之潤滑,在汽缸1 6之較低部 份中藉一合適的汽油迴路其傳送加壓之汽油進入爲此目的 之一喉部1 7所確保。 泵2,從第3圖中可較清楚見到,在頂部亦包括在頂部一 傳送室28連接至連接導管7與在底部連接至汽缸16-活塞 200525083 1 5組。 經由連接導管7傳送室28被安置與噴射器8連通。 特別地,一自動圓柱形閥40被安置於汽缸16-活塞15組 與傳送室2 8間,此閥係由一固定零件2 6與一可動零件2 5 所製成。 閥4 0與特別地它的可動零件2 5能夠在活塞1 5之致動下 舉升以使燃料流經合適的孔3 3至傳送室28且從該處至噴射 器8 〇 孔33之數目、位置與排列可依所希望得到之傳送曲線而 改變 在活塞1 5之向下衝程中,合適的彈性裝置,如一相反彈 簧27確保閥40關閉。 至泵2之燃料饋入經由汽缸1 6之高部分中之孔20而得 到,此等孔20與泵體2之室21界接經由導管22被連接至 貯油器(未顯示)。 關於活塞1 5之孔20定位決定泵2之吸入傳送圖。 傳送室28,在第5圖中可更清楚見到,經由開口 35、喉 部30與適合管29亦連通一壓力調節器6用以適於確保燃料 之正確壓力進入噴射器8。 以上描述之泵組1允許依據引擎之轉數實施一脈衝流速 之一自動變化。 活塞之衝程且特別它的速度,所有其他事情爲相當的,確 實直接被連接至致動軸且因此連接至它的轉數,此特色被用 以在低作業速度下具有最大脈衝流速,以在起始階段中快速 200525083 加壓該單元與最佳脈衝流速値,換句話說,爲當引擎在正常 作業速度下工作時較低數値。 依據本發明之泵組藉由喉部23可預見或不可預見形成在 汽缸1 6上之一燃料再循環迴路,具回復在傳送階段中自汽 缸16-活塞15連結滴落之該加壓汽油,且經由合適孔24將 它噴入吸入室21之目的。 在出現再循環情形中,如第1至5圖中所示,注意的是用 於再循環所需之汽油量必須不是過量的以避免過熱其將造 成在貯油器中燃料之劣化,在此一情形中,與壓力調節器一 致具有一用於再循環中汽油回復進貯油器所需燃料之出口 配件32(第1圖)。 在另一實施例中其未被顯示與未配備再循環且無出口配 件32,因此饋入單元僅被提供以一管用以從貯油器饋入至泵 2而不需有返回分路。 在此一情形中,調節器6之出口必須直接地或間接地經由 可位於泵2外部或內部之一導管與室2 1連接,在用於一間 接噴射四衝程引擎之一饋入系統之情形中,容器組50亦包 括一空氣進氣導管3其係被預見安裝一用於節流(throttled) 體之附接之彈性配件34於其上。 雖然在目前描述中,一泵組被例示安裝於引擎組之頂部, 然而’它應被了解泵組亦可被安裝於動力單元之另一區域, 可能地以適於此目的之另一系統代替或整合該致動系統。 依據本發明之泵組允許大多數之零件被群組一起靠近引 擎自卩流體’且亦不似四輪車輛所採之類比系統,它具有零電 200525083 力消耗與低成本且小尺寸,與因此它對該車輛之設計衝擊較 小且最後它並無高壓力管路。 本發明被描述用以說明但並不限於依較佳實施例之目 的,它應被瞭解到變化且/或修正可爲業界技藝人士所製 成,而不用因此原因逸離以下附屬之申請專利範圍保護範 疇。 【圖式簡單說明】 本發明之進一步特色與優點將從目前描述,其係用以說 明且不限於此目的與參考附圖而變得較清楚,其中: 第1圖爲依據本發明直接安裝於一間接噴射四衝程引擎 之動力單元之頂部上泵組之一部分切面側視圖。 第2圖爲依據本發明泵組之一立體正投影圖。 第3圖爲依據本發明泵組之一放大部分切面側視圖。 第4圖爲從依據本發明泵組上方之一平面圖。 第5圖爲從依據本發明泵組上方之一部分切面平面圖。 【主要元件符號說明】 1 泵組 2 泵 3 進氣導管 4, 5 殼體 6 調節器 7 連通導管 8 噴射器 9 支架 -10- 200525083 10 集管 11 汽門閥驅動式系統 12 偏心輪 13 叉桿 15 活塞 16 汽缸 17,23,30 喉部 18 軸 19 螺旋彈簧 20,24,29,33 孔 2 1 吸入室 22 饋入導管 25 可動零件 26 固定零件 27 傳送室 32 出口配件 34 彈性配件 35 開口 40 閥 50 容器組 5 1 頂部 52 螺絲 100 動力單元

Claims (1)

  1. 200525083 十、申請專利範圍: 1 · 一種用於四衝程噴射引擎燃料饋入系統之栗組(i ),其中 該泵組(1)爲機械式且被安裝於動力單元(1〇0)以依據引擎 之轉數實施具可變流速之饋入。 2·如申g靑專利軔圍第1項之栗組(1),其被安裝於動力單元 (100)之頂部(51)上。 3 ·如申請專利範圍第1或2項之泵組(χ ),其包括一包圍本 體(50)包括有至少一噴射器(8),係位於一相關殻體(4)內 部,一機械式饋入泵(2)與介於該泵(2)與該噴射器(8)間之 一連接導管(7)。 4·如申請專利範圍第3項之泵組(1),其中該包圍本體(50) 包括可逆式扣緊裝置至動力單元(100)之頂部(51)上。 5.如申請專利範圍第3或4項之泵組(1),其中該泵(2)藉一 汽門閥驅動式系統(1 1)被交替地致動。 6 ·如申請專利範圍第5項之泵組(1 ),其中該汽門閥驅動式 系統(1 1)包括一離心器(1 2)被安置於動力單元之凸輪軸 上,嚙合一鉸接至該動力單元(100)之頂部(51)之分叉桿 (13)〇 7.如申請專利範圍第6項之泵組(1),其中該泵(2)包括一氣 缸(16)-活塞(15)組其係藉該分叉桿(13)所致動之一桿(18) 所致動。 8 ·如申請專利範圍第3至7項中任一項之泵組(1 ),其中該 泵(2)包括一連接至該連接導管(7)之傳遞室(28)與至一適 於在該活塞(15)之推力下用以升起之自動閥(4〇)以使燃料 200525083 流至該傳遞室(2 8 )且在彈性裝置(2 7 )作動下用於回復至定 位。 9 ·如申請專利範圍第7與8項之泵組(1 ),其中該泵(2)亦包 括至少一孔用以塡注該泵(2)與來自貯油器之一饋入導管 (22)連通。 1 〇 ·如申請專利範圍第3至9項中任一項之泵組(〗),其中該 包圍本體(50)包括一用於一節流體之配件(3 4)。
TW094100314A 2004-01-14 2005-01-06 Fuel pump group with variable flow rate TW200525083A (en)

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IT000032A ITMI20040032A1 (it) 2004-01-14 2004-01-14 Gruppo pompa carburante a portata variabile

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AT (1) ATE459800T1 (zh)
DE (1) DE602004025787D1 (zh)
ES (1) ES2342383T3 (zh)
IT (1) ITMI20040032A1 (zh)
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DE102013220739A1 (de) * 2013-10-14 2015-04-16 Continental Automotive Gmbh Druckregler

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DE3633136A1 (de) * 1986-09-30 1988-04-07 Daimler Benz Ag Aus pumpe und duese bestehende magnetventilgesteuerte einspritzvorrichtung fuer luftverdichtende brennkraftmaschinen
DE4138290A1 (de) * 1991-11-21 1993-05-27 Kloeckner Humboldt Deutz Ag Brennkraftmaschine
FR2726606B1 (fr) * 1994-11-07 1996-12-06 Chatelain Michel Francois Cons Pompe a pistons
DE19600561C1 (de) * 1996-01-09 1997-08-21 Daimler Benz Ag Steckpumpe für eine Brennkraftmaschine

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DE602004025787D1 (de) 2010-04-15
EP1555428A2 (en) 2005-07-20
CN100419250C (zh) 2008-09-17
EP1555428A3 (en) 2007-06-06
ES2342383T3 (es) 2010-07-06
ITMI20040032A1 (it) 2004-04-14
EP1555428B1 (en) 2010-03-03
ATE459800T1 (de) 2010-03-15
CN1644912A (zh) 2005-07-27

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