TW550333B - System for assisting regeneration of a particle filter - Google Patents

System for assisting regeneration of a particle filter Download PDF

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Publication number
TW550333B
TW550333B TW089106358A TW89106358A TW550333B TW 550333 B TW550333 B TW 550333B TW 089106358 A TW089106358 A TW 089106358A TW 89106358 A TW89106358 A TW 89106358A TW 550333 B TW550333 B TW 550333B
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Taiwan
Prior art keywords
engine
regeneration
particulate filter
fuel
filter
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TW089106358A
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English (en)
Inventor
Olivier Salvat
Jacques Portalier
Tallec Patrice Le
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Peugeot Citroen Automobiles Sa
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/021—Introducing corrections for particular conditions exterior to the engine
    • F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
    • F02D41/024—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to increase temperature of the exhaust gas treating apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/0002—Controlling intake air
    • F02D41/0007—Controlling intake air for control of turbo-charged or super-charged engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/021—Introducing corrections for particular conditions exterior to the engine
    • F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/021—Introducing corrections for particular conditions exterior to the engine
    • F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
    • F02D41/027—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus
    • F02D41/029—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus the exhaust gas treating apparatus being a particulate filter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/30—Controlling fuel injection
    • F02D41/38—Controlling fuel injection of the high pressure type
    • F02D41/40—Controlling fuel injection of the high pressure type with means for controlling injection timing or duration
    • F02D41/402—Multiple injections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/30—Controlling fuel injection
    • F02D41/38—Controlling fuel injection of the high pressure type
    • F02D41/40—Controlling fuel injection of the high pressure type with means for controlling injection timing or duration
    • F02D41/402—Multiple injections
    • F02D41/403—Multiple injections with pilot injections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/30—Controlling fuel injection
    • F02D41/38—Controlling fuel injection of the high pressure type
    • F02D41/40—Controlling fuel injection of the high pressure type with means for controlling injection timing or duration
    • F02D41/402—Multiple injections
    • F02D41/405—Multiple injections with post injections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Processes For Solid Components From Exhaust (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Supercharger (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Description

550333 A7 B7 五、發明說明Ο ) 本發明是有關引擎，尤指汽車引擎，之排氣管內之微 粒過濾器之再生_助系統。 汽車製造廠與零件供應商共有的一個主要課題就是降 低車用引擎在運轉時所造成的污染。 特別是針對柴油引擎。 已經有好幾種方案嘗試著要降低這種引擎的污染程度 〇 例如，曾有提議將微粒過濾器裝入柴油引擎的排氣管 內。 過濾器可以捕捉由這些引擎排出的廢氣中的微粒與煤 煙，並於過濾器再生時燒掉它們。 之前已經發展出數種輔助過濾器再生的裝置。 已知煤煙再生的自然溫度約爲5 5 0〜6 0 0°C。 這樣高的溫度只有在引擎高負載運轉時才能達到。 要促進在低負載時的再生作用，可以將氧化觸媒轉化 器裝在微粒過濾器的上游側。 經濟部智慧財產局員工消費合作社印製 其他的過濾器再生補助系統包括在引擎膨脹期將燃油 噴射進汽缸，以增加廢氣的溫度來輔助過濾器的再生。 這種系統的發展與引擎.汽缸的共通燃油噴射系統，稱 爲〜同軌〃系統，的出現有關。 然而’這些系統有一些缺點，通常是關於燃油後噴射 對於引擎輸出扭矩的影響Ϊ 适是因爲後噴射造成輸出丨]丨:矩相當大的變動，使得車 輛駕駛相當不舒服。 - 4- 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公髮） 550333 A7 _____ B7 五、發明說明e ) 因此本發明的目標是爲了要解決這些問題。 (請先閱讀背面之注意事寫本頁) 最終，本發明提供一種系統來辅助d |擎，尤指汽車引 擎，之排氣管內之微粒過濾器之再生；其中包含在引擎膨 脹期將燃油噴射進一些汽缸’以增加廢氣的溫度來輔助過 濾器的再生的裝置；其特徵爲燃汕噴射裝置可以在引擎膨 脹期的不同的時段，分數次噴射定量的燃油；其中引擎裝 有渦輪壓縮器，系統並且包含調節渦輪壓縮器增壓壓力的 裝置，以減少進入引擎的空氣量。 在讀過下面有範例與圖示說明的敘述後，可以比較容 易瞭解本發明'· -圖1是顯示輔助過濾器再生的系統結構的方塊圖。 一圖2，3與4顯不這種系統的操作。 主要元件對照表 1 引擎 2 排氣管 3 渦輪壓縮器 4 微粒過濾器 經濟部智慧財產局員工消費合作社印製 5 燃油噴射系統. 6 噴油器 7 中央資訊處理器 8 觸媒轉化器 圖1顯示一種系統來_助U擎，尤指汽車引擎，之排 本紙張尺度適用中國國家標準（CNS)A4規格（21〇 X 297公釐） 550333 A7 — B7 五、名务明說明c ) 氣管內Z微粒過爐器之再屯。 在圖1中，廢氣由/]丨擎]流入排氣管2。 排氣管可以加裝渦輪壓縮器3，在這種情況下，廢氣 進入渦輪壓縮器，更明確的說，是進入渦輪葉片部分。 廢氣接著流入微粒過濾器4。 引擎也裝有燃油噴射系統5。其中包含一個將燃油噴 入全部引擎汽缸的共同系統，例如，''同軌〃式，包含了 各汽缸的電動噴油器6。° 電動噴油嘴由中央資訊處理器7所控制。 微粒過濾器4也可以在其上游側加裝氧化觸媒轉化器 8，以輔助其再生。 依照本發明，燃油噴射裝置可以在引擎膨脹期的不同 的時段，分數次噴射定量的燃汕進入某些汽缸。 如此提高了廢氣的溫度來輔助過濾器的再生，而不會 對引擎的輸出扭矩造成顯著的影響。（參照圖2，3與4 )° 圖2顯示了一個沒有再生輔助的引擎運轉的一個階段 。燃油分成兩個階段被噴入，先導噴射I 1是爲隨後的主 要噴射I 2做準備。 4 在有過濾器再生輔助的運轉的一個階段裡，目標是要 在不影響引擎輸出轉矩下，儘「|丨能延長燃燒，以便在燃燒 室內獲得較高溫的氣體，在排氣閥打開時才能提高煤煙的 溫度並啓動其在微粒過濾器內的燃燒。 然後，就如圖3所示，燃汕可以定量地噴入某些汽缸 本紙張尺度適用中國國家標準（CNS)A4規格（210 x 297公釐）-6 - (請先閱讀背面之注意事項寫本頁) 裝 ^5J. 經濟部智慧財產局員工消費合作社印製 550333 A7 _________ B7 五、發明說明$ ) 內。例如，分成3個階段，包括第一個與I 1噴射相同的 先導噴射I / 1以及第二個唢射I / 2，其作用爲提供有 利於第三次噴射I / 3的熱力條件並提供了部分使用者所 需要的扭矩。 I / 2噴射的燃汕量少於成是非常少於I 2所噴射的 燃油量；I 2的噴射時序與I 2相同或延後。 ί / 3噴射提供額外的杻矩以滿足了駕駿人所需的總 扭矩；藉著在膨脹期的延續燃燒來提高廢氣的溫度；以及 依其調整的方式，可以產生未燃燒的碳氫化合物，在流經 過濾器上游的觸媒轉化器8時才|:丨：3觸媒促進燃燒而進一步 提高廢氣溫度。 爲了在不影響引擎輸出扭矩的情況下產生足夠的熱量 ’引擎在低負載運轉時，I / 3噴射的燃油量比I / 2多* 很多，中負載運轉時燃汕噴射設一樣或多一點，高負載時 則較少。I > 3噴射的時序，以丨扣軸角度而言，較I / 2 偏移1 5 °到1 5 0。，這耍視運轉狀況而定。（參照圖4 ) 請注意在此實例，在膨脹期的後噴射時間內有連續兩 次的噴射。 無庸贅言，可以有更多的喷射次數。例如噴射I / 3 ，可以再分爲兩個次噴射，以增加引擎輸出扭矩與廢氣溫 度’並增加可以在觸媒轉化器内燃燒的碳氫化合物。這種 解決方式比起單一次噴射I > 3提供較好的運轉控芾[J。 然而’如果引擎加裝了渦輪壓縮器，爲了不影響輸出 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公爱） (請先閱讀背面之注意事項3寫本頁) FI裝· ' 經濟部智慧財產局員工消費合作社印製 550333 Α7 Β7 五、發明說明θ ) 轉矩，除了多次噴射外，還需要特別設定增壓壓力’以補 償渦輪壓縮器山較熱的廢氣所Μ得的較多的能量。 新的設定點會減少進入引擎的空氣流量，增加廢氣的 濃度及溫度。 在這種情況下，設定點可以由中央資訊處理器7送到 渦輪壓縮器3。 因此，本再生輔助系統的發明可以在不影響引擎輸出 扭矩的條件下，提升熱量使得煤煙可以在過濾器內燃燒。 在相同的輸出扭矩下，要獲得這些熱量，可以藉著在 膨脹期內連續多次將燃油噴射人某些汽缸來延長引擎循環 的燃燒期。而這些噴射可與噴射時所產生的碳氫化合物在 觸媒轉化器內的燃燒與調整引擎渦輪壓縮器的增壓壓力的 設定點相結合。 如此可以在不減少駕駛舒適感的情況下重生過濾器。 亦即在低負載或中負載運轉時（此時引擎自然產生的熱量 不足以讓煤煙燃燒），車麵不會突然加速與減速。 無庸贅言，上述的系統可以有許多不同的具體實例。 (請先閱讀背面之注意事項^^寫本頁) 裝 ·
經濟部智慧財產局員工消費合作社印製 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐）_ 8 -

Claims (1)

  1. I附件4 第89 10635 8號專利申請案 中文申請專利範圍修正本 民國90年3月修疋 1 · 一種用以輔助微粒過濾器（4 )之再生的系統， 此微粒過濾器（4 )係結合入引擎，尤指汽車引擎，之排 氣管（2 )內，其中包含燃油噴射系統（5 )將燃油在膨 U長期噴射進引擎（1 )的至少某些汽缸以提高廢氣的溫度 來_助過濾器的再生；其特徵爲燃油噴射系統（5 )可以 在引擎膨脹期，分數次噴射定量的燃油；其中引擎裝有渦 輪壓縮器（3 )，並且系統包含調節渦輪壓縮器增壓壓力 的屮火fH八處叩器（7 )，以減少進入丨幣的空氣m " 2 ·如申請專利範圍第1項之用以輔助微粒過濾器（ 4 )之再生的系統，其中氧化觸媒轉化器（8 )裝置於微 粒過濾器的上游側。 3 ·如申請專利範圍第1或2項之用以輔助微粒過濾 器（4 )之再生的系統，其中引擎（1 )裝有將燃油噴入 所有汽缸的燃油噴射系統（5 )及噴油器（6 )。 -----------------線 〈請先閱讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐）
TW089106358A 1999-04-06 2000-04-05 System for assisting regeneration of a particle filter TW550333B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9904274A FR2792036B1 (fr) 1999-04-06 1999-04-06 Systeme d'aide a la regeneration d'un filtre a particules integre dans une ligne d'echappement d'un moteur diesel notamment de vehicule automobile

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TW550333B true TW550333B (en) 2003-09-01

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TW089106358A TW550333B (en) 1999-04-06 2000-04-05 System for assisting regeneration of a particle filter

Country Status (9)

Country Link
US (1) US6412276B1 (zh)
EP (1) EP1086304B1 (zh)
JP (1) JP4612197B2 (zh)
AT (1) ATE260407T1 (zh)
DE (1) DE60008470T2 (zh)
ES (1) ES2215630T3 (zh)
FR (1) FR2792036B1 (zh)
TW (1) TW550333B (zh)
WO (1) WO2000060228A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2421546A (en) * 2004-12-22 2006-06-28 Detroit Diesel Corp Method for the regeneration of a particulate filter connected to an i.c. engine including enriching the charge supplied to the engine

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JP3607980B2 (ja) * 1999-12-16 2005-01-05 トヨタ自動車株式会社 内燃機関
US7293407B2 (en) * 2000-06-21 2007-11-13 Daimlerchrysler Ag Method for operating a diesel engine
DE10029502A1 (de) * 2000-06-21 2002-01-31 Daimler Chrysler Ag Beschleunigter Aufbau des Ladedrucks durch ein mehrstufiges Brennverfahren für Dieselmotoren
FR2816356B1 (fr) * 2000-11-03 2003-06-20 Peugeot Citroen Automobiles Sa Systeme d'aide a la regeneration d'un filtre a particules integre dans une ligne d'echappement d'un moteur diesel de vehicule automobile
FR2816357B1 (fr) * 2000-11-03 2003-02-07 Peugeot Citroen Automobiles Sa Systeme d'aide a la regeneration d'un filtre a particules integre dans une ligne d'echappement d'un moteur diesel de vehicule
EP1205647B1 (de) * 2000-11-03 2003-03-05 Ford Global Technologies, Inc., A subsidiary of Ford Motor Company Verfahren zur Regeneration des Partikelfilters eines Dieselmotors
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DE60008470T2 (de) 2005-02-03
JP2002541373A (ja) 2002-12-03
FR2792036A1 (fr) 2000-10-13
ES2215630T3 (es) 2004-10-16
ATE260407T1 (de) 2004-03-15
JP4612197B2 (ja) 2011-01-12
EP1086304B1 (fr) 2004-02-25
DE60008470D1 (de) 2004-04-01
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FR2792036B1 (fr) 2002-06-07
US6412276B1 (en) 2002-07-02

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