JP5035805B2 - エンジンの制御装置 - Google Patents
エンジンの制御装置 Download PDFInfo
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- JP5035805B2 JP5035805B2 JP2008239990A JP2008239990A JP5035805B2 JP 5035805 B2 JP5035805 B2 JP 5035805B2 JP 2008239990 A JP2008239990 A JP 2008239990A JP 2008239990 A JP2008239990 A JP 2008239990A JP 5035805 B2 JP5035805 B2 JP 5035805B2
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- JP
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- Prior art keywords
- fuel
- engine
- purge
- abnormality
- fuel supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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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
- F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
- F02D19/0623—Failure diagnosis or prevention; Safety measures; Testing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
- F02D19/08—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed simultaneously using pluralities of fuels
- F02D19/082—Premixed fuels, i.e. emulsions or blends
- F02D19/084—Blends of gasoline and alcohols, e.g. E85
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
- F02D19/08—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed simultaneously using pluralities of fuels
- F02D19/082—Premixed fuels, i.e. emulsions or blends
- F02D19/085—Control based on the fuel type or composition
- F02D19/087—Control based on the fuel type or composition with determination of densities, viscosities, composition, concentration or mixture ratios of fuels
- F02D19/088—Control based on the fuel type or composition with determination of densities, viscosities, composition, concentration or mixture ratios of fuels by estimation, i.e. without using direct measurements of a corresponding sensor
-
- 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
- F02D41/22—Safety or indicating devices for abnormal conditions
- F02D41/221—Safety or indicating devices for abnormal conditions relating to the failure of actuators or electrically driven elements
-
- 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
- F02D2200/0611—Fuel type, fuel composition or fuel quality
- F02D2200/0612—Fuel type, fuel composition or fuel quality determined by estimation
-
- 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
- F02D41/003—Adding fuel vapours, e.g. drawn from engine fuel reservoir
- F02D41/0032—Controlling the purging of the canister as a function of the engine operating conditions
-
- 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
- F02D41/1486—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor with correction for particular operating conditions
- F02D41/1488—Inhibiting the regulation
-
- 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
- F02D41/3809—Common rail control systems
-
- 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
- Y02T10/30—Use of alternative fuels, e.g. biofuels
-
- 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)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)
Description
図1は、本発明に係る制御装置を含むエンジンシステムの概略構成を示す図である。図1に示すエンジン11は、吸気管噴射型(Multi Point Injection)の多気筒エンジン、例えば、直列4気筒エンジンであり、エンジン本体12には、4つの気筒13が並設されている。各気筒(燃焼室)13には、それぞれ点火プラグ(図示なし)が配されると共に、吸気ポート及び排気ポート(図示なし)が設けられている。そして吸気ポートには吸気マニホールド14が接続され、排気ポートには排気マニホールド15が接続されている。
図5は、実施形態2に係る異常判定手順の一例を示すフローチャートである。なお同一工程には同一符号を付し、重複する説明は省略する。またエンジンシステムの構成自体は実施形態1と同様であるため説明は省略する。
以上、本発明の実施形態について説明したが、本発明は、このような実施形態に限定されるものではない。例えば、上述の実施形態では、リターンレス方式のエンジンを例示して本発明を説明したが、勿論、本発明は、デリバリパイプと燃料タンクとの間にリターン流路を有するリターン方式のエンジンの制御装置にも適用することができる。また例えば、上述の実施形態では、吸気管噴射型のエンジンを例示して本発明を説明したが、勿論、本発明は、例えば、筒内噴射型等、他のタイプのエンジンの制御装置にも適用することができることは言うまでもない。
11 エンジン
12 エンジン本体
13 気筒
14 吸気マニホールド
15 排気マニホールド
16 燃料供給装置
17 燃料噴射弁
18 デリバリパイプ
19 燃料パイプ
20 燃料タンク
21 キャニスタ
22 パージ通路
23 吸気管(吸気通路)
24 パージ弁
25 排気管(排気通路)
26 三元触媒
27 O2センサ
28 ECU
Claims (3)
- 燃料供給系がリターンレス方式の燃料供給装置で構成されたエンジンの制御装置であって、
アルコールが混合された混合燃料を使用可能なエンジンの排気空燃比を検出する空燃比検出手段と、
前記空燃比検出手段で検出された排気空燃比を目標空燃比に近づけるように燃料噴射量をフィードバック制御するフィードバック制御手段と、
前記空燃比検出手段で検出された排気空燃比と前記フィードバック制御手段による燃料噴射量の補正量とに基づいて前記混合燃料のアルコール濃度を推定する濃度推定手段と、
前記フィードバック制御手段によるフィードバック制御が開始されてから前記燃料供給装置を構成する燃料供給路内の燃料がタンク内の燃料に置換されるまでの期間内における前記補正量の変化のみに基づいて前記燃料供給系の異常を判定する異常判定手段と、を具備し、
該異常判定手段は、前記補正量が一定期間以上継続して所定値以上となっている場合に、燃料供給系に異常があると判定することを特徴とするエンジンの制御装置。 - 前記濃度推定手段は、前記異常判定手段が前記燃料供給系に異常があると判定した場合に、前記混合燃料のアルコール濃度の推定を中止することを特徴とする請求項1に記載のエンジンの制御装置。
- 前記エンジンが、蒸発燃料を蓄えるキャニスタと、該キャニスタと吸気系とを接続するパージ通路とを具備するものであり、
このパージ通路を開閉制御して前記吸気系へパージされる蒸発燃料のパージ量を制御するパージ制御手段をさらに具備し、
該パージ制御手段が、前記期間中における蒸発燃料の前記吸気系へのパージをカットすることを特徴とする請求項1又は2に記載のエンジンの制御装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008239990A JP5035805B2 (ja) | 2008-09-18 | 2008-09-18 | エンジンの制御装置 |
US12/561,883 US7729846B2 (en) | 2008-09-18 | 2009-09-17 | Control device for engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008239990A JP5035805B2 (ja) | 2008-09-18 | 2008-09-18 | エンジンの制御装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2010071201A JP2010071201A (ja) | 2010-04-02 |
JP5035805B2 true JP5035805B2 (ja) | 2012-09-26 |
Family
ID=42006125
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2008239990A Expired - Fee Related JP5035805B2 (ja) | 2008-09-18 | 2008-09-18 | エンジンの制御装置 |
Country Status (2)
Country | Link |
---|---|
US (1) | US7729846B2 (ja) |
JP (1) | JP5035805B2 (ja) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4717108B2 (ja) * | 2008-11-17 | 2011-07-06 | 三菱電機株式会社 | 内燃機関の制御装置 |
JP5534281B2 (ja) * | 2011-05-10 | 2014-06-25 | トヨタ自動車株式会社 | Ffvにおけるキャニスタのパージ方法及び同方法を使用するffvにおけるキャニスタのパージ機構 |
FR2983243B1 (fr) * | 2011-11-24 | 2013-12-20 | Peugeot Citroen Automobiles Sa | Systeme embarque de vehicule |
MY156399A (en) * | 2013-04-04 | 2016-02-15 | Nissan Motor | Diagnostic device of bi-fuel and diagnostic method of bi-fuel |
US9470669B2 (en) | 2013-12-11 | 2016-10-18 | Honda Motor Co., Ltd. | System and method for flexible fuel ethanol concentration and hardware malfunction detection |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4989570A (en) * | 1989-04-19 | 1991-02-05 | Japan Electronic Control Systems Co., Ltd. | Fail detecting system for sensor monitoring concentration of a fuel in blended multi-fuel for internal combustion engine and fail-safe system in lambda-control |
US5007398A (en) * | 1990-04-12 | 1991-04-16 | Japan Electronic Control Systems Co., Ltd. | Alcohol sensor failure detection system for internal combustion engine |
JP2956237B2 (ja) | 1991-03-05 | 1999-10-04 | トヨタ自動車株式会社 | 内燃機関の燃料性状検出装置 |
JPH0571400A (ja) * | 1991-09-13 | 1993-03-23 | Mitsubishi Motors Corp | 混合燃料使用機関の運転制御方法 |
US5400762A (en) * | 1992-08-24 | 1995-03-28 | Chrysler Corporation | Method for determining fuel composition |
US5947089A (en) * | 1997-10-29 | 1999-09-07 | Chrysler Corporation | Method of compensating for a failed sensor in a flexible fueled vehicle |
US6343571B1 (en) * | 1998-12-17 | 2002-02-05 | Clean Fuels Technology, Inc. | Fuel emulsion detection method and system for an electronically controlled engine |
JP2001329894A (ja) * | 2000-05-19 | 2001-11-30 | Denso Corp | 内燃機関の燃料系異常診断装置 |
JP2004251135A (ja) * | 2003-02-18 | 2004-09-09 | Nissan Motor Co Ltd | 内燃機関の燃料性状推定装置 |
JP4529957B2 (ja) * | 2006-07-14 | 2010-08-25 | 株式会社デンソー | 内燃機関の燃料濃度学習装置 |
JP2008051063A (ja) * | 2006-08-28 | 2008-03-06 | Toyota Motor Corp | 内燃機関の制御装置 |
US7616103B2 (en) * | 2006-11-20 | 2009-11-10 | Gm Global Technology Operations, Inc. | Flexible fuel prediction and driver message display |
US7685995B2 (en) * | 2007-06-13 | 2010-03-30 | Denso Corporation | Controller for internal combustion engine |
-
2008
- 2008-09-18 JP JP2008239990A patent/JP5035805B2/ja not_active Expired - Fee Related
-
2009
- 2009-09-17 US US12/561,883 patent/US7729846B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP2010071201A (ja) | 2010-04-02 |
US7729846B2 (en) | 2010-06-01 |
US20100065031A1 (en) | 2010-03-18 |
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