JPWO2012059953A1 - 気筒間空燃比ばらつき異常検出装置 - Google Patents
気筒間空燃比ばらつき異常検出装置 Download PDFInfo
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- 239000000446 fuel Substances 0.000 title claims abstract description 169
- 230000005856 abnormality Effects 0.000 title claims abstract description 104
- 238000001514 detection method Methods 0.000 title claims description 61
- 238000002485 combustion reaction Methods 0.000 claims abstract description 56
- 230000005540 biological transmission Effects 0.000 claims abstract description 21
- 239000002699 waste material Substances 0.000 claims abstract description 12
- 230000008859 change Effects 0.000 claims description 25
- 230000001276 controlling effect Effects 0.000 claims description 11
- 230000002596 correlated effect Effects 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 27
- 239000003054 catalyst Substances 0.000 description 26
- 239000012041 precatalyst Substances 0.000 description 24
- 238000002347 injection Methods 0.000 description 23
- 239000007924 injection Substances 0.000 description 23
- 230000002000 scavenging effect Effects 0.000 description 19
- 238000000034 method Methods 0.000 description 14
- 230000008569 process Effects 0.000 description 12
- 230000007423 decrease Effects 0.000 description 7
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- 238000001816 cooling Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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- 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
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- B60W10/101—Infinitely variable gearings
- B60W10/107—Infinitely variable gearings with endless flexible members
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- B60W30/188—Controlling power parameters of the driveline, e.g. determining the required power
- B60W30/1882—Controlling power parameters of the driveline, e.g. determining the required power characterised by the working point of the engine, e.g. by using engine output chart
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
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- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
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- F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
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- F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
- F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
- F02D13/0261—Controlling the valve overlap
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- 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
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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
- F02D41/1439—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the position of the sensor
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- F02D41/02—Circuit arrangements for generating control signals
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- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1493—Details
- F02D41/1495—Detection of abnormalities in the air/fuel ratio feedback system
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
- F02B23/08—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition
- F02B23/10—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition with separate admission of air and fuel into cylinder
- F02B23/104—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition with separate admission of air and fuel into cylinder the injector being placed on a side position of the cylinder
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- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B25/00—Engines characterised by using fresh charge for scavenging cylinders
- F02B25/14—Engines characterised by using fresh charge for scavenging cylinders using reverse-flow scavenging, e.g. with both outlet and inlet ports arranged near bottom of piston stroke
- F02B25/145—Engines characterised by using fresh charge for scavenging cylinders using reverse-flow scavenging, e.g. with both outlet and inlet ports arranged near bottom of piston stroke with intake and exhaust valves exclusively in the cylinder head
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- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
- F02B29/04—Cooling of air intake supply
- F02B29/0406—Layout of the intake air cooling or coolant circuit
- F02B29/0425—Air cooled heat exchangers
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- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
- F02B29/04—Cooling of air intake supply
- F02B29/0406—Layout of the intake air cooling or coolant circuit
- F02B29/0437—Liquid cooled heat exchangers
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- 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
- F02D2041/001—Controlling intake air for engines with variable valve actuation
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- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2400/00—Control systems adapted for specific engine types; Special features of engine control systems not otherwise provided for; Power supply, connectors or cabling for engine control systems
- F02D2400/12—Engine control specially adapted for a transmission comprising a torque converter or for continuously variable transmissions
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- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/008—Controlling each cylinder individually
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Abstract
Description
多気筒内燃機関の排気通路に設置されたターボチャージャのタービンと、
前記タービンをバイパスするバイパス通路を開閉するウェイストゲートバルブと、
前記バイパス通路の出口よりも下流側の前記排気通路に設置された空燃比センサと、
前記空燃比センサの出力の変動度合いに基づいて気筒間空燃比ばらつき異常を検出する異常検出手段と、
前記内燃機関に連結された無段変速機と、
エンジン回転数とエンジントルクによって規定される座標系における所定の動作線上を前記内燃機関の実際の動作点が移動するように、前記内燃機関および無段変速機を制御する制御手段と、
前記ばらつき異常の検出時に、前記座標系内のウェイストゲートバルブ開領域外に前記実際の動作点があるとき、この実際の動作点が前記ウェイストゲートバルブ開領域内に移動するよう、前記動作線を変更する変更手段と、
を備えたことを特徴とする気筒間空燃比ばらつき異常検出装置が提供される。
多気筒内燃機関の排気通路に設置されたターボチャージャのタービンと、
前記タービンよりも下流側の前記排気通路に設置された空燃比センサと、
前記空燃比センサの出力の変動度合いに基づいて気筒間空燃比ばらつき異常を検出する異常検出手段と、
前記内燃機関に連結された無段変速機と、
エンジン回転数とエンジントルクによって規定される座標系における所定の動作線上を前記内燃機関の実際の動作点が移動するように、前記内燃機関および無段変速機を制御する制御手段と、
前記ばらつき異常の検出時に、前記座標系内のスカベンジ領域内に前記実際の動作点があるとき、この実際の動作点が前記スカベンジ領域外に移動するよう、前記動作線を変更する変更手段と、
を備えたことを特徴とする気筒間空燃比ばらつき異常検出装置が提供される。
多気筒内燃機関の排気通路に設置されたターボチャージャのタービンと、
前記タービンよりも下流側の前記排気通路に設置された空燃比センサと、
前記空燃比センサの出力の変動度合いに基づいて気筒間空燃比ばらつき異常を検出する異常検出手段と、
前記内燃機関に連結された無段変速機と、
エンジン回転数とエンジントルクによって規定される座標系における所定の動作線上を前記内燃機関の実際の動作点が移動するように、前記内燃機関および無段変速機を制御する制御手段と、
前記ばらつき異常の検出時に、前記座標系内のスカベンジ領域内に前記実際の動作点があるとき、吸気弁および排気弁のバルブオーバーラップを禁止するようバルブタイミングを変更する変更手段と、
を備えたことを特徴とする気筒間空燃比ばらつき異常検出装置が提供される。
前記パラメータは、異なる二つのタイミングにおける前記空燃比センサ出力の差に基づく値である。
[気筒間空燃比ばらつき異常検出]
[第1実施例]
(1)エンジンの暖機が終了している。例えば水温センサ65で検出された水温が所定値以上であるとき暖機終了とされる。
(2)少なくとも触媒前センサ60が活性化している。
(3)ストイキ制御中である。
(4)吸入空気量Gaが所定値以上である。
[第2実施例]
Claims (8)
- 多気筒内燃機関の排気通路に設置されたターボチャージャのタービンと、
前記タービンをバイパスするバイパス通路を開閉するウェイストゲートバルブと、
前記バイパス通路の出口よりも下流側の前記排気通路に設置された空燃比センサと、
前記空燃比センサの出力の変動度合いに基づいて気筒間空燃比ばらつき異常を検出する異常検出手段と、
前記内燃機関に連結された無段変速機と、
エンジン回転数とエンジントルクによって規定される座標系における所定の動作線上を前記内燃機関の実際の動作点が移動するように、前記内燃機関および無段変速機を制御する制御手段と、
前記ばらつき異常の検出時に、前記座標系内のウェイストゲートバルブ開領域外に前記実際の動作点があるとき、この実際の動作点が前記ウェイストゲートバルブ開領域内に移動するよう、前記動作線を変更する変更手段と、
を備えたことを特徴とする気筒間空燃比ばらつき異常検出装置。 - 前記変更手段は、前記実際の動作点が、前記座標系内の同一の等出力線上で前記ウェイストゲートバルブ開領域内に移動するよう、前記動作線を変更する
ことを特徴とする請求項1に記載の気筒間空燃比ばらつき異常検出装置。 - 前記動作線が、燃費が最良となるような燃費最適線である
ことを特徴とする請求項1または2に記載の気筒間空燃比ばらつき異常検出装置。 - 多気筒内燃機関の排気通路に設置されたターボチャージャのタービンと、
前記タービンよりも下流側の前記排気通路に設置された空燃比センサと、
前記空燃比センサの出力の変動度合いに基づいて気筒間空燃比ばらつき異常を検出する異常検出手段と、
前記内燃機関に連結された無段変速機と、
エンジン回転数とエンジントルクによって規定される座標系における所定の動作線上を前記内燃機関の実際の動作点が移動するように、前記内燃機関および無段変速機を制御する制御手段と、
前記ばらつき異常の検出時に、前記座標系内のスカベンジ領域内に前記実際の動作点があるとき、この実際の動作点が前記スカベンジ領域外に移動するよう、前記動作線を変更する変更手段と、
を備えたことを特徴とする気筒間空燃比ばらつき異常検出装置。 - 前記変更手段は、前記実際の動作点が、前記座標系内の同一の等出力線上で前記スカベンジ領域外に移動するよう、前記動作線を変更する
ことを特徴とする請求項4に記載の気筒間空燃比ばらつき異常検出装置。 - 多気筒内燃機関の排気通路に設置されたターボチャージャのタービンと、
前記タービンよりも下流側の前記排気通路に設置された空燃比センサと、
前記空燃比センサの出力の変動度合いに基づいて気筒間空燃比ばらつき異常を検出する異常検出手段と、
前記内燃機関に連結された無段変速機と、
エンジン回転数とエンジントルクによって規定される座標系における所定の動作線上を前記内燃機関の実際の動作点が移動するように、前記内燃機関および無段変速機を制御する制御手段と、
前記ばらつき異常の検出時に、前記座標系内のスカベンジ領域内に前記実際の動作点があるとき、吸気弁および排気弁のバルブオーバーラップを禁止するようバルブタイミングを変更する変更手段と、
を備えたことを特徴とする気筒間空燃比ばらつき異常検出装置。 - 前記異常検出手段は、前記空燃比センサ出力の変動度合いに相関するパラメータの値に基づいてばらつき異常を検出し、
前記パラメータは、異なる二つのタイミングにおける前記空燃比センサ出力の差に基づく値である
ことを特徴とする請求項1〜6のいずれか一項に記載の多気筒内燃機関の気筒間空燃比ばらつき異常検出装置。 - 前記空燃比センサは、前記排気通路のうち、各気筒の排気ガスが集合する集合部に設置されている
ことを特徴とする請求項1〜7のいずれか一項に記載の多気筒内燃機関の気筒間空燃比ばらつき異常検出装置。
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JP5333058B2 (ja) * | 2009-08-27 | 2013-11-06 | トヨタ自動車株式会社 | 内燃機関の空燃比気筒間インバランス判定装置 |
JP2012126197A (ja) * | 2010-12-14 | 2012-07-05 | Ygk:Kk | ハイブリッド車両 |
US9890694B2 (en) * | 2012-07-05 | 2018-02-13 | Toyota Jidosha Kabushiki Kaisha | Internal combustion engine |
BR112015001448B1 (pt) * | 2012-07-25 | 2021-06-08 | Toyota Jidosha Kabushiki Kaisha | aparelho de controle para motor sobrealimentado |
JP5737276B2 (ja) * | 2012-12-04 | 2015-06-17 | トヨタ自動車株式会社 | 気筒間空燃比ばらつき異常検出装置 |
JP5765350B2 (ja) * | 2013-02-04 | 2015-08-19 | トヨタ自動車株式会社 | 多気筒内燃機関の気筒間空燃比インバランス検出装置 |
JP6107378B2 (ja) * | 2013-04-25 | 2017-04-05 | トヨタ自動車株式会社 | 空燃比インバランス判定装置 |
JP6232793B2 (ja) * | 2013-07-17 | 2017-11-22 | 三菱自動車工業株式会社 | エンジンの制御装置 |
JP5850009B2 (ja) * | 2013-08-22 | 2016-02-03 | トヨタ自動車株式会社 | 内燃機関の制御装置 |
JP5890453B2 (ja) * | 2014-03-11 | 2016-03-22 | 富士重工業株式会社 | 気筒間ばらつき異常検知装置 |
JP6044575B2 (ja) * | 2014-03-28 | 2016-12-14 | マツダ株式会社 | ターボ過給器付きエンジンの異常検出装置 |
US10030593B2 (en) | 2014-05-29 | 2018-07-24 | Cummins Inc. | System and method for detecting air fuel ratio imbalance |
JP6090238B2 (ja) * | 2014-06-05 | 2017-03-08 | トヨタ自動車株式会社 | 車両の制御装置 |
US9759148B2 (en) * | 2015-05-14 | 2017-09-12 | Ford Global Technologies, Llc | Method and system for determining air-fuel ratio imbalance via engine torque |
JP2017008770A (ja) * | 2015-06-19 | 2017-01-12 | トヨタ自動車株式会社 | 内燃機関の制御装置 |
FR3096085B1 (fr) * | 2019-05-16 | 2021-05-28 | Continental Automotive Gmbh | Procédé de contrôle d’une sonde lambda |
JP6741131B1 (ja) * | 2019-07-31 | 2020-08-19 | トヨタ自動車株式会社 | 内燃機関の状態検出システム、データ解析装置、及びハイブリッド車両 |
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US7032550B2 (en) * | 2003-07-22 | 2006-04-25 | Toyota Jidosha Kabushiki Kaisha | Inter-cylinder variation detection device and inter-bank variation detection device of internal combustion engine |
CN1730926A (zh) * | 2005-08-18 | 2006-02-08 | 河北工业大学 | 气体燃料多点顺序喷射控制系统 |
DE602007000538D1 (de) * | 2006-11-17 | 2009-03-26 | Honda Motor Co Ltd | Steuersystem für einen Verbrennungsmotor |
US8001782B2 (en) * | 2007-09-26 | 2011-08-23 | Ford Global Technologies, Llc | Approach for identifying and responding to an unresponsive wastegate in a twin turbocharged engine |
JP5035688B2 (ja) * | 2008-03-03 | 2012-09-26 | トヨタ自動車株式会社 | 空燃比センサの異常診断装置 |
JP4876107B2 (ja) | 2008-07-18 | 2012-02-15 | 日立オートモティブシステムズ株式会社 | 内燃機関の診断制御装置 |
JP4900347B2 (ja) * | 2008-08-29 | 2012-03-21 | トヨタ自動車株式会社 | 内燃機関の制御装置 |
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JP5099266B2 (ja) | 2012-12-19 |
CN103221661B (zh) | 2015-05-13 |
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US20120283931A1 (en) | 2012-11-08 |
US8433499B2 (en) | 2013-04-30 |
CN103221661A (zh) | 2013-07-24 |
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