JP6446074B2 - エンジンおよび後処理機構を備えるシステム、およびその制御プロセス - Google Patents
エンジンおよび後処理機構を備えるシステム、およびその制御プロセス Download PDFInfo
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- JP6446074B2 JP6446074B2 JP2017022939A JP2017022939A JP6446074B2 JP 6446074 B2 JP6446074 B2 JP 6446074B2 JP 2017022939 A JP2017022939 A JP 2017022939A JP 2017022939 A JP2017022939 A JP 2017022939A JP 6446074 B2 JP6446074 B2 JP 6446074B2
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- 238000012805 post-processing Methods 0.000 claims description 28
- 238000005457 optimization Methods 0.000 claims description 21
- 239000000446 fuel Substances 0.000 claims description 10
- 238000005259 measurement Methods 0.000 claims description 5
- 230000001052 transient effect Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- 239000003344 environmental pollutant Substances 0.000 claims description 3
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- 238000010586 diagram Methods 0.000 description 8
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- 238000001391 atomic fluorescence spectroscopy Methods 0.000 description 3
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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
- 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
- F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
- F02D41/1406—Introducing closed-loop corrections characterised by the control or regulation method with use of a optimisation method, e.g. iteration
-
- 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
- F02D41/14—Introducing closed-loop corrections
- F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
- F02D2041/1412—Introducing closed-loop corrections characterised by the control or regulation method using a predictive controller
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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
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/06—Fuel or fuel supply system parameters
- F02D2200/0625—Fuel consumption, e.g. measured in fuel liters per 100 kms or miles per gallon
-
- 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
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/08—Exhaust gas treatment apparatus parameters
-
- 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
- F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D41/0047—Controlling exhaust gas recirculation [EGR]
- F02D41/005—Controlling exhaust gas recirculation [EGR] according to engine operating conditions
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Description
動装置を有することができる。エンジンは、後処理サブシステムの排出ガス源とみなすことができる。検知されるエンジン排出ガスの状態量には、ターボチャージャ排出口(WG)、可変容量ターボチャージャ(VGT)、排出ガス再循環(EGR)、噴射開始(SOI)、絞気弁(TV)などの作動装置などの利用可能なエンジン作動装置を操作することにより、一定の範囲内で影響を及ぼすことができる。エンジン運転点のほとんどすべてにおいて、後処理サブシステムの最適な運転のために排出ガス状態量を調整し、または変更するために、様々な自由度を使用することができる。例えば、いくつかの運転領域で検知されるように、現状の後処理サブシステムが低温のために排出物を低減することができないとき、エンジン作動装置は、温度を上昇させるように制御することができ、その結果、エンジン排出ガス排出物は、規定された制限を逸脱しない。他方、現状の後処理サブシステムが、大量の汚染物質を低減することができれば、エンジン作動装置を最良の燃料経済性も実現するように制御することができる。
ただし、g(xi,vi,ui,yi−1)≦0;i=0,1,...,N。
得られた最適な定常状態マップは、
i番目の後処理サブシステムまたはエンジンに関するオンライン部分(実時間)は、図3に示すことができる。制御装置は、エンジンおよびAFSと統合することができる。エンジンまたはAFS_i41はそれぞれ、x0またはxiの内部状態を有することができる。作動装置入力u0またはui43はそれぞれ、エンジンまたはAFS_i41に進むことができる。作動装置入力43は、制御装置0または制御装置i42からそれぞれ来ることができる。制御装置42は、記号
本開示の要約を以下に提供する。エンジンおよび後処理システムは、エンジン、エンジンに接続する後処理機構、ならびにエンジンおよび後処理機構に接続する制御装置を含むことができる。制御装置は、最適化プログラムを有することができる。最適化プログラムは、1つのシステムとして統合されたエンジンおよび後処理機構の性能を最適化するためのものとすることができる。最適化された性能は、排出物を低減することと、1つのシステムの流体効率を増加させることとを含むことができる。
本システムおよび/または方法を少なくとも1つの例示的な例に関して説明してきたが、本明細書を読むと直ちに、当業者には多くの変形形態および変更形態が明らかになろう。したがって、そうしたすべての変形形態および変更形態を含む関連技術を考慮して、添付の特許請求の範囲をできる限り広く解釈するものとする。
Claims (4)
- システムであって、前記システムは、
エンジン、
前記エンジンに接続する後処理機構、ならびに
前記エンジンおよび前記後処理機構に接続する制御装置
を含む、システムであって、前記制御装置は、前記システムのセンサから信号を受け取り、前記信号を処理し、最適化プログラムに従って前記システムの作動装置に信号を提供し、
前記制御装置は、前記最適化プログラムを含み、前記最適化プログラムは、オンライン部分およびオフライン部分を備え、
前記最適化プログラムのオフライン部分において、前記制御装置は、最適なエンジンマップを提供する制約条件付の最適化問題を含み、前記エンジンマップは、前記センサからの測定変数、および前記エンジンの1つ以上の運転点のためのエンジンの作動装置の位置に関する、設定点および制約条件を規定し、前記エンジンマップは、前記システムの変数により媒介変数化され、
前記最適化プログラムのオンライン部分において、前記制御装置は、1つのシステムとして統合された前記エンジンおよび前記後処理機構の性能を最適化するように、前記最適化プログラムの前記オフライン部分で提供される規定される設定点および制約条件を実現するために、前記エンジンの作動装置に入力を提供する、
エンジンおよび後処理システム。 - 前記制御装置は、
外乱排除、経時変化による前記エンジン性能のばらつきの影響の最小化、および/または前記エンジンの過渡運転中の前記後処理機構の必要な性能の提供のためのフィードバックループを有し、
前記エンジンの作動装置は、可変容量ターボチャージャ(VGT)、排出ガス再循環(EGR)、および絞気弁(TV)の少なくとも1つを有する、
請求項1に記載のシステム。 - 結合されたシステムを制御するためのプロセスであって、
エンジンを提供するステップと、
結合されたシステムをもたらすために1つまたは複数の後処理サブシステムを加えるステップと、
前記1つまたは複数の後処理サブシステムの1つを前記エンジンの排出ガス出力部に接続するステップと、
オンライン部分およびオフライン部分を備える最適化プログラムに従って、前記1つまたは複数の後処理サブシステムの最適な運転、および前記エンジンの最適な運転のために前記排出ガスの状態量を変化させるように、前記エンジンの作動装置を操作するステップと、を含み、
前記最適化プログラムのオフライン部分は、1つ以上の最適なエンジンマップを提供する制約条件付の最適化問題を含み、前記エンジンマップは、測定変数、および、前記エンジンの1つ以上の動作点のためのエンジンの作動装置の位置に関する設定点および制約条件を規定し、前記エンジンマップは、前記結合されたシステムの変数により媒介変数化され、
前記最適化プログラムのオンライン部分は、前記エンジンの作動装置の操作を含む、
プロセス。 - 前記排出ガスの状態量を変化させるために、前記排出ガス中の汚染物質の量を規定された大きさ以下の大きさまで低減するステップと、
前記1つまたは複数の後処理サブシステムが、前記排出ガス中の汚染物質の量を前記規定された大きさ以下の大きさまで低減するとき、前記エンジンの燃料経済性を増加させるために、前記エンジンの前記作動装置を操作するステップと、
前記エンジンおよび前記1つまたは複数の後処理サブシステムに接続する、1つまたは複数の制御装置を提供するステップと、をさらに含み、
前記1つまたは複数の制御装置は、前記設定点を確実に認識し、および/または、
前記1つまたは複数の制御装置は、前記制約条件を確実に満たす、請求項3に記載のプロセス。
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US13/290,025 US20130111905A1 (en) | 2011-11-04 | 2011-11-04 | Integrated optimization and control of an engine and aftertreatment system |
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JP2012243443A Division JP2013096418A (ja) | 2011-11-04 | 2012-11-05 | エンジンおよび後処理システムの統合された最適化および制御 |
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JP2017022939A Active JP6446074B2 (ja) | 2011-11-04 | 2017-02-10 | エンジンおよび後処理機構を備えるシステム、およびその制御プロセス |
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US11619189B2 (en) | 2023-04-04 |
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US20130111905A1 (en) | 2013-05-09 |
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US20220010745A1 (en) | 2022-01-13 |
US11156180B2 (en) | 2021-10-26 |
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