JP2017096113A - 蒸発燃料処理装置 - Google Patents
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- 239000000446 fuel Substances 0.000 title claims description 36
- 239000002828 fuel tank Substances 0.000 claims abstract description 32
- 230000000903 blocking effect Effects 0.000 claims description 47
- 238000004364 calculation method Methods 0.000 abstract description 14
- 238000001514 detection method Methods 0.000 abstract description 12
- 238000007789 sealing Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 11
- 238000010926 purge Methods 0.000 description 10
- 230000007613 environmental effect Effects 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 238000004590 computer program Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 239000003463 adsorbent Substances 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
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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
- F02D41/003—Adding fuel vapours, e.g. drawn from engine fuel reservoir
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0407—Constructional details of adsorbing systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0454—Controlling adsorption
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- 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
- F02D41/004—Control of the valve or purge actuator, e.g. duty cycle, closed loop control of 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
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
- F02D41/2425—Particular ways of programming the data
- F02D41/2429—Methods of calibrating or learning
- F02D41/2438—Active learning methods
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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
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
- F02D41/2425—Particular ways of programming the data
- F02D41/2429—Methods of calibrating or learning
- F02D41/2441—Methods of calibrating or learning characterised by the learning conditions
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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
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
- F02D41/2425—Particular ways of programming the data
- F02D41/2429—Methods of calibrating or learning
- F02D41/2451—Methods of calibrating or learning characterised by what is learned or calibrated
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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
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
- F02D41/2425—Particular ways of programming the data
- F02D41/2429—Methods of calibrating or learning
- F02D41/2451—Methods of calibrating or learning characterised by what is learned or calibrated
- F02D41/2464—Characteristics of actuators
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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
- F02D41/30—Controlling fuel injection
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
- F02M25/089—Layout of the fuel vapour installation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/702—Hydrocarbons
- B01D2257/7022—Aliphatic hydrocarbons
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/45—Gas separation or purification devices adapted for specific applications
- B01D2259/4516—Gas separation or purification devices adapted for specific applications for fuel vapour recovery systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/035—Fuel tanks characterised by venting means
- B60K15/03504—Fuel tanks characterised by venting means adapted to avoid loss of fuel or fuel vapour, e.g. with vapour recovery systems
- B60K2015/03514—Fuel tanks characterised by venting means adapted to avoid loss of fuel or fuel vapour, e.g. with vapour recovery systems with vapor recovery means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/035—Fuel tanks characterised by venting means
- B60K2015/0358—Fuel tanks characterised by venting means the venting is actuated by specific signals or positions of particular parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/035—Fuel tanks characterised by venting means
- B60K2015/0358—Fuel tanks characterised by venting means the venting is actuated by specific signals or positions of particular parts
- B60K2015/03585—Fuel tanks characterised by venting means the venting is actuated by specific signals or positions of particular parts by gas pressure
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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
- F02D2200/0602—Fuel pressure
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)
Abstract
【解決手段】開弁開始位置検出手段16aは、封鎖弁24の開弁動作開始後、燃料タンク15の内圧を検出して、内圧の変化量が所定値以上のとき、そのときの封鎖弁24の開弁位置を開弁開始位置として検出する。学習手段16bは、開弁開始位置検出手段16aによる開弁開始位置を、封鎖弁24の開弁制御を行う際の開弁開始位置の学習値として記憶する。学習値制限手段16cは、学習手段16bにより記憶されている前回の学習値に対して、開弁開始位置検出手段16aによる開弁開始位置が予め決められた許容変化幅を超えて変化するとき、その許容変化幅内の上限値及び/又は下限値である制限値を新たな学習値とする。
【選択図】図1
Description
図1は、本発明の第1実施形態の概要を示す。この実施形態の蒸発燃料処理装置は、燃料タンク15内で発生した蒸発燃料をベーパ通路22を介してキャニスタ21に吸着している。図示を省略したが、キャニスタ21に吸着された蒸発燃料は、エンジンに供給されてパージされている。ベーパ通路22中には封鎖弁24が介挿され、封鎖弁24は、開弁手段24aにより開弁制御されている。封鎖弁24は、弁座24bに対する弁体24cの開弁方向への移動量が初期状態から所定量以内では閉弁状態に維持される構成とされている。封鎖弁24としては、図1に示すように、弁体24cの移動方向に対向して弁座24bを持つグローブ弁の他、貫通孔の開いたボールが回動することで流路の開閉が行われるボール弁等を採用してもよい。グローブ弁及びボール弁は、共に公知であるので細部の説明は省略する。
図2は、本発明の第2実施形態の概要を示す。第2実施形態が上述の第1実施形態に対して特徴とする点は、学習値を制限値に設定する際の判定を早めるようにした点である。その他の部分は、両実施形態とも同一であり、再度の説明は省略する。
11 エンジン本体
12 吸気通路
14 スロットル弁
15 燃料タンク
16 制御回路
16a 開弁開始位置検出手段
16b 学習手段
16c 学習値制限手段
16d 判定手段
16e 第1判定手段
16f 第2判定手段
17 給油口
20 蒸発燃料処理装置
21 キャニスタ
21a 活性炭
22 ベーパ通路
23 パージ通路
24 封鎖弁
24a 開弁手段
24b 弁座
24c 弁体
25 パージ弁
26 圧力センサ(内圧センサ)
28 大気通路
Claims (5)
- 燃料タンク内の蒸発燃料をベーパ通路を介して吸着するキャニスタと、前記ベーパ通路に介挿された封鎖弁とを備え、該封鎖弁は、開弁手段により開弁制御されて、弁座に対する弁体の移動量が初期状態から所定量以内では閉弁状態に維持される構成とされた蒸発燃料処理装置であって、
前記封鎖弁の開弁動作開始後、燃料タンク内の空間圧力を内圧として検出して、その内圧の変化量が所定値以上のとき、そのときの封鎖弁の開弁位置を開弁開始位置として検出する開弁開始位置検出手段と、
該開弁開始位置検出手段によって検出された開弁開始位置を、封鎖弁の開弁制御を行う際の開弁開始位置の学習値として記憶する学習手段と、
該学習手段により記憶されている前回の学習値に対して、前記開弁開始位置検出手段によって検出された開弁開始位置が予め決められた許容変化幅を超えて変化するとき、その許容変化幅内の上限値及び/又は下限値である制限値を新たな学習値とする学習値制限手段と
を備える蒸発燃料処理装置。 - 請求項1において、
前記学習値制限手段は、
前記開弁開始位置検出手段により検出された開弁開始位置と、前記学習手段により記憶されている前回の学習値に予め決められた許容変化幅を加えた制限値とを比較し、前記開弁開始位置が前記制限値内か否かを判定する判定手段を備え、
該判定手段により、前記開弁開始位置が前記制限値外と判定されると、前記制限値を新たな学習値とし、前記開弁開始位置が前記制限値内と判定されると、前記開弁開始位置を新たな学習値とする蒸発燃料処理装置。 - 請求項1において、
前記学習値制限手段は、
前記封鎖弁の開弁量と、前記学習手段により記憶されている前回の学習値に予め決められた許容変化幅を加えた第1制限値とを比較し、前記封鎖弁の開弁量が前記第1制限値を超えているか否かを判定する第1判定手段を備え、
該第1判定手段により前記封鎖弁の開弁量が前記第1制限値を超えていると判定されると、前記第1制限値を新たな学習値とし、
前記第1判定手段により前記封鎖弁の開弁量が前記第1制限値を超えていないと判定され、しかも前記開弁開始位置検出手段により開弁開始位置が検出されると、該開弁開始位置における開弁量と、前記学習手段により記憶されている前回の学習値から予め決められた許容変化幅を減じた第2制限値とを比較し、前記開弁開始位置における開弁量が前記第2制限値より小さいか否かを判定する第2判定手段を備え、
該第2判定手段により、前記開弁開始位置における開弁量が前記第2制限値より小さいと判定されると、前記第2制限値を新たな学習値とし、前記開弁開始位置における開弁量が前記第2制限値より大きいと判定されると、前記開弁開始位置を新たな学習値とする蒸発燃料処理装置。 - 請求項1又は2において、
前記学習値制限手段における前記制限値は、前記封鎖弁の開弁量が学習値より大きい側の上限値である蒸発燃料処理装置。 - 請求項1又は2において、
前記学習値制限手段における前記制限値は、前記封鎖弁の開弁量が学習値より小さい側の下限値である蒸発燃料処理装置。
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JP2015226576A JP6534604B2 (ja) | 2015-11-19 | 2015-11-19 | 蒸発燃料処理装置 |
DE102016122235.6A DE102016122235B4 (de) | 2015-11-19 | 2016-11-18 | Kraftstoffdampfverarbeitungsvorrichtung |
US15/355,972 US10006386B2 (en) | 2015-11-19 | 2016-11-18 | Fuel vapor processing apparatus |
CN201611022982.XA CN106907254B (zh) | 2015-11-19 | 2016-11-18 | 蒸发燃料处理装置 |
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JP2017133411A (ja) * | 2016-01-27 | 2017-08-03 | トヨタ自動車株式会社 | 蒸発燃料処理装置 |
JP6683594B2 (ja) * | 2016-12-21 | 2020-04-22 | トヨタ自動車株式会社 | 蒸発燃料処理装置 |
JP6619324B2 (ja) * | 2016-12-21 | 2019-12-11 | トヨタ自動車株式会社 | 蒸発燃料処理装置 |
JP2018159305A (ja) * | 2017-03-22 | 2018-10-11 | トヨタ自動車株式会社 | 蒸発燃料処理装置 |
CN113107712B (zh) * | 2021-03-31 | 2022-02-22 | 浙江吉利控股集团有限公司 | 一种用于orvr车型的脱附系统及车辆 |
Citations (4)
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JPH0874530A (ja) * | 1994-08-31 | 1996-03-19 | Nippondenso Co Ltd | エンジンの弁動作タイミング調整装置 |
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JP2005155335A (ja) * | 2003-11-20 | 2005-06-16 | Toyota Motor Corp | 大気圧学習装置 |
JP2015110914A (ja) * | 2013-12-06 | 2015-06-18 | 愛三工業株式会社 | 蒸発燃料処理装置 |
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CN106907254B (zh) | 2020-03-20 |
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