JP2012047107A - 作業車両の排気ガス浄化システム - Google Patents
作業車両の排気ガス浄化システム Download PDFInfo
- Publication number
- JP2012047107A JP2012047107A JP2010190215A JP2010190215A JP2012047107A JP 2012047107 A JP2012047107 A JP 2012047107A JP 2010190215 A JP2010190215 A JP 2010190215A JP 2010190215 A JP2010190215 A JP 2010190215A JP 2012047107 A JP2012047107 A JP 2012047107A
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- exhaust gas
- temperature
- engine
- purification system
- work vehicle
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- 238000004140 cleaning Methods 0.000 title abstract 2
- 230000008929 regeneration Effects 0.000 claims abstract description 78
- 238000011069 regeneration method Methods 0.000 claims abstract description 78
- 238000001514 detection method Methods 0.000 claims description 55
- 238000000746 purification Methods 0.000 claims description 45
- 239000013618 particulate matter Substances 0.000 claims description 31
- 230000007935 neutral effect Effects 0.000 claims description 28
- 230000006866 deterioration Effects 0.000 abstract description 9
- 230000007423 decrease Effects 0.000 description 24
- 238000009825 accumulation Methods 0.000 description 16
- 239000000446 fuel Substances 0.000 description 15
- 239000003054 catalyst Substances 0.000 description 12
- 238000002347 injection Methods 0.000 description 12
- 239000007924 injection Substances 0.000 description 12
- 230000003647 oxidation Effects 0.000 description 12
- 238000007254 oxidation reaction Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 238000004891 communication Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 230000004913 activation Effects 0.000 description 4
- 238000011144 upstream manufacturing Methods 0.000 description 4
- 230000008602 contraction Effects 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 208000031513 cyst Diseases 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
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Classifications
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- 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
- F01N3/025—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 using fuel burner or by adding fuel to exhaust
- F01N3/0253—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 using fuel burner or by adding fuel to exhaust adding fuel to exhaust gases
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- 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
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/2058—Electric or electro-mechanical or mechanical control devices of vehicle sub-units
- E02F9/2062—Control of propulsion units
- E02F9/2066—Control of propulsion units of the type combustion engines
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2246—Control of prime movers, e.g. depending on the hydraulic load of work tools
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2278—Hydraulic circuits
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- 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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
- F01N13/0097—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series the purifying devices are arranged in a single housing
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- 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
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- 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
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- 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
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/105—General auxiliary catalysts, e.g. upstream or downstream of the main catalyst
- F01N3/106—Auxiliary oxidation catalysts
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- 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
- F01N9/00—Electrical control of exhaust gas treating apparatus
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- 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
- F01N9/00—Electrical control of exhaust gas treating apparatus
- F01N9/002—Electrical control of exhaust gas treating apparatus of filter regeneration, e.g. detection of clogging
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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
- F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
- F02D29/04—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving pumps
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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
- F02D41/0215—Introducing corrections for particular conditions exterior to the engine in relation with elements of the transmission
- F02D41/0225—Introducing corrections for particular conditions exterior to the engine in relation with elements of the transmission in relation with the gear ratio or shift lever position
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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
- F02D41/0245—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 by increasing temperature of the exhaust gas leaving the engine
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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
- F02D41/027—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
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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
- F02D41/14—Introducing closed-loop corrections
- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
- F02D41/1448—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an exhaust gas pressure
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- 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
- F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
- F01N2900/06—Parameters used for exhaust control or diagnosing
- F01N2900/10—Parameters used for exhaust control or diagnosing said parameters being related to the vehicle or its components
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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
- F02D2041/026—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 using an external load, e.g. by increasing generator load or by changing the gear ratio
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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
- F02D2200/00—Input parameters for engine control
- F02D2200/50—Input parameters for engine control said parameters being related to the vehicle or its components
- F02D2200/502—Neutral gear position
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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
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/08—Introducing corrections for particular operating conditions for idling
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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
- F02D41/14—Introducing closed-loop corrections
- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
- F02D41/1446—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being exhaust temperatures
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- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- 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
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- 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
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Toxicology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Processes For Solid Components From Exhaust (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Exhaust Gas After Treatment (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
【解決手段】自動再生中に、ゲートロックレバー5がロック入り状態にあり、作業を行わない場合、排気温度検出装置37により検出した排気ガス温度が閾値未満であると、昇温アシストが開始される。最小エンジン出力PS1(ポンプ吐出圧P1・ポンプ吐出流量Q1)からエンジン出力PS2(ポンプ吐出圧P2・ポンプ吐出流量Q2)にして、エンジン1に油圧的な負荷をかけることにより、排気ガス温度が上昇する。再生中に作業を再開するとき、オペレータがゲートロックレバー5を第1位置Aに下げ操作すると、最小エンジン出力PS1(ポンプ吐出圧P1・ポンプ吐出流量Q1)に戻り、昇温アシストは停止される。昇温アシストが停止されても、自動再生は継続する。
【選択図】図1
Description
〜構成〜
以下、本発明の第1実施形態を図面を用いて説明する。
図4はコントローラ4の機能ブロックを示す図である。コントローラ4は、車体コントローラ41と、エンジンコントローラ43とを含み、これらのコントローラは通信ライン44を介して相互に接続され、車体ネットワークを構成している。エンジンコントロールダイヤル2の指令信号、位置検出装置35、差圧検出装置36、排気温度検出装置37の検出信号は車体コントローラ41に入力され、回転数検出装置3の検出信号はエンジンコントローラ43に入力される。
第1実施形態の排気ガス浄化システムの動作を説明する。図7は理解の補助の為に示す、排気ガス温度の時間経過の一例である。
第1実施形態の排気ガス浄化システムの効果を説明する。
以上に本発明の一実施形態を説明したが、本発明はこれに制限されるものではなく、本発明の精神の範囲内で種々の変形が可能である。以下にその変形例を列挙する。
第1実施形態において、制御弁30とポンプ11のレギュレータとこれらを制御する車体コントローラ41の一機能は、油圧ポンプ11の吐出圧と吐出流量を調整し、エンジン1に油圧的な負荷をかけ、再生時の昇温をアシストする昇温アシスト手段を構成するが、昇温アシスト手段はこれに限定されない。
第1実施形態において、作業車両は油圧ショベルであり、ゲートロックレバー5は、油圧ショベルのフロント作業機102の操作を不能にして動作を停止する動作停止手段を構成するが、作業車両の動作停止手段はこれに限られない。
1a 電子ガバナ
2 エンジンコントロールダイヤル
3 回転数検出装置
4 コントローラ
5 ゲートロックレバー
11 油圧ポンプ
12 パイロットポンプ
13 油圧モータ
14,15 油圧シリンダ
17〜19 流量制御弁
20 パイロット油圧源
21 パイロットリリーフ弁
22 メインリリーフ弁
23 電磁切換弁
24 パイロット油路
25,26,27 リモコン弁
28,29 操作レバー
30 制御弁
31 排気管
32 フィルタ
33 酸化触媒
34 DPF装置
35 位置検出装置
36 差圧検出装置
37 排気温度検出装置
38 再生スイッチ
39 再生用燃料噴射装置
41 車体コントローラ
43 エンジンコントローラ
44 通信ライン
51 空気量検出装置
52 ブースト圧検出装置
61 アクセルペダル
62 パーキングブレーキ
63 シフトレバー
66 パーキングブレーキ操作位置検出装置
67 シフトレバー操作位置検出装置
100 下部走行体
101 上部旋回体
102 フロント作業機
104a,104b 走行モータ
105 旋回モータ
106 エンジンルーム
107 運転室
108 運転席
111 ブーム
112 アーム
113 バケット
114 ブームシリンダ
115 アームシリンダ
116 バケットシリンダ
200 ホイールローダ
201 車体前部
202 車体後部
204 フロント作業装置
206 運転席
207 操作レバー装置
208 ハンドル
211 バケット
212 ブーム
213 バケットシリンダ
214 ブームシリンダ
Claims (8)
- ディーゼルエンジンと、
前記エンジンの動力により駆動される被駆動体と、
前記被駆動体の動作を指令する操作手段と、
前記被駆動体の動作を停止する動作停止手段と、
を有する作業車両に備えられ、
前記エンジンの排気系に配置され、排気ガス中に含まれる粒子状物質を捕集するためのフィルタを含むフィルタ装置と、
前記排気ガスの温度を上昇させ、前記フィルタに堆積した粒子状物質を焼却除去する再生装置と、
前記再生装置の作動の開始と停止を制御する再生制御装置と
を備えた作業車両の排気ガス浄化システムにおいて、
前記再生装置の昇温をアシストする昇温アシスト手段を更に備え、
前記再生制御装置は、前記再生装置の作動中に、前記被駆動体の動作を停止するように前記動作停止手段が操作されたとき、前記昇温アシスト手段の作動を開始させる
ことを特徴とする作業車両の排気ガス浄化システム。 - 請求項1記載の作業車両の排気ガス浄化システムにおいて、
前記排気ガスの温度を検出する排気温度検出装置を更に備え、
前記再生制御装置は、前記再生装置の作動中に、前記被駆動体の動作を停止するように前記動作停止手段が操作され、前記排気温度検出装置が閾値未満の温度を検出したとき、前記昇温アシスト手段の作動を開始させる
ことを特徴とする作業車両の排気ガス浄化システム。 - 請求項1記載の作業車両の排気ガス浄化システムにおいて、
前記再生制御装置は、前記被駆動体の動作停止を解除するように前記動作停止手段が操作されたとき、前記昇温アシスト手段の作動を停止させる
ことを特徴とする作業車両の排気ガス浄化システム。 - 請求項1記載の作業車両の排気ガス浄化システムにおいて、
前記作業車両は、前記エンジンにより駆動される油圧ポンプを有し、
前記昇温アシスト手段は、前記油圧ポンプの吐出圧と吐出流量の少なくともいずれか一方を調整し、前記エンジンに油圧的な負荷をかける
ことを特徴とする作業車両の排気ガス浄化システム。 - 請求項1記載の作業車両の排気ガス浄化システムにおいて、
前記作業車両は前記エンジンを制御するエンジン制御装置を備え、
前記昇温アシスト手段は、前記再生装置の作動中に、エンジンの回転数をアイドル回転数より高い所定回転数になるように、前記エンジン制御装置に指令する
ことを特徴とする作業車両の排気ガス浄化システム。 - 請求項1記載の作業車両の排気ガス浄化システムにおいて、
前記動作停止手段は、前記被駆動体の動作を可能とする第1位置と前記被駆動体の動作を不能とする第2位置とに選択的に操作されるゲートロックレバーである
ことを特徴とする作業車両の排気ガス浄化システム。 - 請求項1記載の作業車両の排気ガス浄化システムにおいて、
前記動作停止手段は、作業車両の駐車時に走行を制動するように操作される駐車用ブレーキである
ことを特徴とする作業車両の排気ガス浄化システム。 - 請求項1記載の作業車両の排気ガス浄化システムにおいて、
前記動作停止手段は、前進位置と中立位置と後進位置とに選択的に切換られるシフトレバーである
ことを特徴とする作業車両の排気ガス浄化システム。
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JP2010190215A JP5548882B2 (ja) | 2010-08-27 | 2010-08-27 | 作業車両の排気ガス浄化システム |
US13/171,663 US20120047883A1 (en) | 2010-08-27 | 2011-06-29 | Exhaust gas cleaning system for engineering vehicle |
EP11174577.4A EP2423481B1 (en) | 2010-08-27 | 2011-07-19 | Exhaust gas cleaning system for engineering vehicle |
CN201110224263.7A CN102383900B (zh) | 2010-08-27 | 2011-08-02 | 一种液压挖掘机 |
KR1020110085048A KR101810692B1 (ko) | 2010-08-27 | 2011-08-25 | 작업 차량의 배기 가스 정화 시스템 |
US14/602,553 US20150135685A1 (en) | 2010-08-27 | 2015-01-22 | Exhaust gas cleaning system for engineering vehicle |
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CN102383900A (zh) | 2012-03-21 |
US20150135685A1 (en) | 2015-05-21 |
KR20120020071A (ko) | 2012-03-07 |
EP2423481B1 (en) | 2021-03-03 |
JP5548882B2 (ja) | 2014-07-16 |
US20120047883A1 (en) | 2012-03-01 |
CN102383900B (zh) | 2015-11-25 |
KR101810692B1 (ko) | 2018-01-25 |
EP2423481A1 (en) | 2012-02-29 |
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