JP7103310B2 - Co2捕捉装置 - Google Patents
Co2捕捉装置 Download PDFInfo
- Publication number
- JP7103310B2 JP7103310B2 JP2019115871A JP2019115871A JP7103310B2 JP 7103310 B2 JP7103310 B2 JP 7103310B2 JP 2019115871 A JP2019115871 A JP 2019115871A JP 2019115871 A JP2019115871 A JP 2019115871A JP 7103310 B2 JP7103310 B2 JP 7103310B2
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- JP
- Japan
- Prior art keywords
- unit
- capture
- exhaust gas
- cooling
- battery
- 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.)
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- 238000002485 combustion reaction Methods 0.000 claims description 92
- 238000001816 cooling Methods 0.000 claims description 89
- 238000000034 method Methods 0.000 claims description 51
- 230000008929 regeneration Effects 0.000 claims description 32
- 238000011069 regeneration method Methods 0.000 claims description 32
- 230000008569 process Effects 0.000 claims description 28
- 239000013618 particulate matter Substances 0.000 claims description 25
- 238000011144 upstream manufacturing Methods 0.000 claims description 12
- 239000007789 gas Substances 0.000 description 138
- 239000000446 fuel Substances 0.000 description 34
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 18
- 239000003054 catalyst Substances 0.000 description 17
- 239000003463 adsorbent Substances 0.000 description 14
- 230000007423 decrease Effects 0.000 description 13
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- 238000010521 absorption reaction Methods 0.000 description 11
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- 229910021536 Zeolite Inorganic materials 0.000 description 9
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 9
- 239000010457 zeolite Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
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- 230000009471 action Effects 0.000 description 7
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- 230000006870 function Effects 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 238000001179 sorption measurement Methods 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000003795 desorption Methods 0.000 description 3
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- 230000009467 reduction Effects 0.000 description 3
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- HEZMWWAKWCSUCB-PHDIDXHHSA-N (3R,4R)-3,4-dihydroxycyclohexa-1,5-diene-1-carboxylic acid Chemical compound O[C@@H]1C=CC(C(O)=O)=C[C@H]1O HEZMWWAKWCSUCB-PHDIDXHHSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/36—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being an exhaust flap
-
- 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
- F01N2250/00—Combinations of different methods of purification
- F01N2250/10—Combinations of different methods of purification cooling and filtering
-
- 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
- F01N2410/00—By-passing, at least partially, exhaust from inlet to outlet of apparatus, to atmosphere or to other device
- F01N2410/12—By-passing, at least partially, exhaust from inlet to outlet of apparatus, to atmosphere or to other device in case of absorption, adsorption or desorption of exhaust gas constituents
-
- 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
- F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
- F01N2570/10—Carbon or carbon oxides
-
- 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
- F01N2590/00—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
- F01N2590/11—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for hybrid vehicles
-
- 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
- F01N2900/104—Battery status
-
- 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
- F01N2900/16—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust apparatus, e.g. particulate filter or catalyst
- F01N2900/1602—Temperature of exhaust gas apparatus
-
- 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
-
- 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
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- 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
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Hybrid Electric Vehicles (AREA)
- Exhaust Gas After Treatment (AREA)
- Processes For Solid Components From Exhaust (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Description
該電動機に電力を供給すると共に該内燃機関の出力によって充電可能なバッテリと、
を備えると共に、前記内燃機関が前記内燃機関から排出される排気ガスを流通させる排気通路を備える、ハイブリッド車両に搭載されたCO2捕捉装置であって、
前記排気通路から分岐された分岐通路と、
前記分岐通路に設けられ且つ流入した前記排気ガス中のCO2を捕捉するCO2捕捉部と、
前記バッテリの電力を用いて前記CO2捕捉部を冷却する冷却部と、
前記分岐通路に流入する前記排気ガスの流量を調整する流量調整部と、
前記冷却部及び前記流量調整部を制御するCO2捕捉制御部と、
を備え、
前記CO2捕捉制御部は、前記バッテリの充電率が所定のSOC閾値以下になった場合には、前記冷却部による冷却を停止させると共に、前記CO2捕捉部への前記排気ガスの流通を遮断するように前記流量調整部を制御する、CO2捕捉装置。
前記CO2捕捉制御部は、前記パティキュレートフィルタの温度をフィルタ再生温度に保持するフィルタ再生処理が行われている場合には、前記冷却部による冷却を停止させると共に、前記CO2捕捉部への前記排気ガスの流通を遮断するように前記流量調整部をさらに制御する、上記(1)に記載のCO2捕捉装置。
前記CO2捕捉装置は、前記排気通路への合流位置と前記CO2捕捉部との間において前記分岐通路に設けられた開閉弁をさらに含み、
前記CO2捕捉制御部は、前記バッテリの充電率が所定のSOC閾値以下になった場合、前記開閉弁を閉状態にするように前記開閉弁を制御する、上記(1)乃至(3)のいずれか一つに記載のCO2捕捉装置。
前記CO2捕捉制御部は、前記バッテリの充電率が前記所定のSOC閾値以下になった場合には、前記吸引部による吸引をさらに停止させる、上記(1)乃至(5)のいずれか一つに記載のCO2捕捉装置。
≪ハイブリッド車両の構成≫
図1は、本実施形態に係るハイブリッド車両1の構成を概略的に示す図である。図1に示されるように、ハイブリッド車両1(以下、車両1ともいう)は、内燃機関2と、第一電動発電機3と、第二電動発電機4と、パワーコントロールユニット(PCU)5と、バッテリ6と、CO2捕捉装置20と、電子制御ユニット(ECU)30と、を備える。
図2を用いて、本実施形態に係る内燃機関及びCO2捕捉装置の構成を説明する。図2は、本実施形態に係る内燃機関2及びCO2捕捉装置20の構成を概略的に示す図である。図2には、内燃機関2及びCO2捕捉装置20が示されている。
図3は、ECU30のCPUにおける機能ブロック図である。図3に示されるように、本実施形態では、ECU30のCPUは、機能モジュールとして、HV制御部31と、CO2捕捉制御部32と、を備える。本実施形態では、ECU30は、メモリに記憶されたプログラム等を実行することによって、HV制御部31及びCO2捕捉制御部32として機能する。
以下、本実施形態に係るハイブリッド車両1における制御の概要について説明する。
以下、CO2捕捉部24においてCO2を捕捉する方法について説明する。上述したCO2捕捉装置20では、流量調整弁22が開状態に制御され且つ吸引部25が作動している場合、排気通路2bを流通して分岐通路21との分岐位置に到達した排気ガスの一部は分岐通路21を流通する。なお、流量調整弁22が開状態に設定されているときには、吸引部25が作動されていなくても少量であれば排気ガスが分岐通路21を流通する。
ところで、上述したように、内燃機関2から排出された排気ガスは高温であり、ゼオライトは高温になると吸着していたCO2を脱離させる。したがって、高温の排気ガスがそのままCO2捕捉部24に流入すると、CO2捕捉部24が高温になって、CO2捕捉部24におけるCO2の捕捉能力が低下し、捕捉されていたCO2がCO2捕捉部24から脱離してしまう。
図4は、本実施形態に係るCO2捕捉制御部32における制御ルーチンを示すフローチャートである。図示した制御ルーチンは、一定の時間間隔毎に実行される。
次に、上述したような構成を有するCO2捕捉装置20によって奏される他の作用・効果について説明する。
次に、第二実施形態に係るCO2捕捉装置について説明する。第二実施形態に係るCO2捕捉装置の構成は、基本的に第一実施形態に係るCO2捕捉装置の構成と同様である。以下では、第一実施形態に係るCO2捕捉装置の構成と異なる部分を中心に説明する。
内燃機関2から排出された粒子状物質(PM)を捕集するために、内燃機関2の排気通路2b内にパティキュレートフィルタ(以下、「フィルタ」という)2dが設けられている。斯かるフィルタ2dでは、フィルタ2d上へのPMの堆積量が増大すると、フィルタ2dに目詰まりが生じ、フィルタ2dでの排気ガスの圧力損失が増大する。この圧力損失の増大は、排気ガスが流れにくくなることによる内燃機関2の出力の低下や燃焼の悪化を招いてしまう。
そこで、本実施形態では、CO2捕捉制御部32は、バッテリ6のSOCが所定のSOC閾値以下である場合に加え、フィルタ再生処理が行われている場合にも、CO2捕捉部24への排気ガスの流通を遮断するように流量調整弁22を制御する。その結果、フィルタ再生処理が行われた場合であっても、フィルタ再生処理によって高温になった排気ガスがCO2捕捉部24に流入することが抑制される。そのため、フィルタ再生処理が行われた場合であっても、CO2捕捉部24におけるCO2の捕捉能力の低下ひいてはCO2の脱離が抑制される。
図5は、本実施形態に係るCO2捕捉制御部32における制御ルーチンを示すフローチャートである。図示した制御ルーチンは、一定の時間間隔毎に実行される。なお、図5のステップS22乃至S27はそれぞれ図4のステップS12乃至S17と同様であるため、説明を省略する。
本実施形態では、CO2捕捉制御部32は、バッテリ6のSOCが所定のSOC閾値以下である場合に加え、内燃機関2においてフィルタ再生処理が実行中である場合にも、ステップS22において吸引部25による吸引を停止させている。その結果、吸引部25による吸引のための電力が削減されるため、走行に必要な電力が不足する事態が生じることが抑制される。
次に、第三実施形態に係るCO2捕捉装置について説明する。第三実施形態に係るCO2捕捉装置の構成は、基本的に第一実施形態に係るCO2捕捉装置の構成と同様である。以下では、第一実施形態に係るCO2捕捉装置の構成と異なる部分を中心に説明する。
本実施形態では、ECU30は、リーンバーンモードとストイキ燃焼モードとの間で内燃機関2の運転モードを切り替える。リーンバーンモードは、理論空燃比よりもリーン側に設定された空燃比を目標とする運転モードである。ストイキ燃焼モードは、理論空燃比又はその近辺の空燃比を目標とする運転モードである。例えば、内燃機関2の燃料噴射弁における燃料噴射量の指令値が内燃機関2の目標回転速度に基づいて設定されるリーンバーン領域内の値からこのリーンバーン領域外の値になった場合、内燃機関2の運転モードはリーンバーン燃焼モードからストイキ燃焼モードへと切り替えられる。一方、内燃機関2の燃料噴射弁における燃料噴射量の指令値がリーンバーン領域外の値からリーンバーン領域内の値になった場合、内燃機関2の運転モードがストイキ燃焼モードからリーンバーンモードへと切り替えられる。リーンバーンモードからストイキ燃焼モードへの切り替えるときには、例えば、内燃機関2の燃焼室に供給される吸気ガスが減量される。
そこで、本実施形態では、CO2捕捉制御部32は、バッテリ6のSOCが所定のSOC閾値以下である場合に加え、排気ガス中のCO2濃度が所定の濃度閾値以下の場合にも、冷却部23による冷却を停止させると共に、CO2捕捉部24への排気ガスの流通を遮断するように流量調整弁22を制御する。その結果、CO2捕捉部24におけるCO2の捕捉効率が悪い場合には、CO2捕捉部24におけるCO2の捕捉が抑制されるとともに、冷却部23における電力消費が低減される。そのため、CO2捕捉部24において効率的にCO2が捕捉されると共に、走行に必要な電力が不足する事態が生じることが抑制される。
図6は、本実施形態に係るCO2捕捉制御部32における制御ルーチンを示すフローチャートである。図示した制御ルーチンは、一定の時間間隔毎に実行される。なお、図6のステップS32乃至S37はそれぞれ図4のステップS12乃至S17と同様であるため、説明を省略する。
本実施形態では、CO2捕捉制御部32は、バッテリ6のSOCが所定のSOC閾値以下である場合に加え、排気ガス中のCO2濃度が所定の濃度閾値以下である場合にも、ステップS22において吸引部25による吸引を停止させている。その結果、吸引部25による吸引のための電力が削減されるため、走行に必要な電力が不足する事態が生じることが抑制される。
次に、第四実施形態に係るCO2捕捉装置について説明する。第四実施形態に係るCO2捕捉装置の構成は、基本的に第一実施形態に係るCO2捕捉装置の構成と同様である。以下では、第四実施形態に係るCO2捕捉装置の構成と異なる部分を中心に説明する。
図7は、本実施形態に係る内燃機関2及びCO2捕捉装置20の構成を概略的に示す図である。図7に示されるように、CO2捕捉装置20は、第一実施形態における構成要素に加えて、開閉弁26を備えるとともに、分岐通路21がCO2捕捉部24よりも排気ガス流れ方向下流側で排気通路2bと合流するように接続されている。すなわち、本実施形態では、分岐通路21を流通した排気ガスは、排気通路2bと合流して排気通路2bを介して大気に放出される。
図8は、本実施形態に係るCO2捕捉制御部32における制御ルーチンを示すフローチャートである。図示した制御ルーチンは、一定の時間間隔毎に実行される。なお、図8のステップS41、S42、S44、S45、S47はそれぞれ図4のステップS11、S12、S14S15、S17と同様であるため、説明を省略する。
次に、第五実施形態に係るCO2捕捉装置について説明する。図9は、本実施形態に係るCO2捕捉制御部32における制御ルーチンを示すフローチャートである。なお、図9のステップS52乃至S57はそれぞれ図4のステップS12乃至S17と同様であるため、説明を省略する。
次に、第六実施形態に係るCO2捕捉装置について説明する。図10は、本実施形態に係るCO2捕捉制御部32における制御ルーチンを示すフローチャートである。なお、図10のステップS62乃至S67はそれぞれ図4のステップS12乃至S17と同様であるため、説明を省略する。
以上、本開示に係る好適な実施形態を説明したが、本開示はこれら実施形態に限定されるものではなく、特許請求の範囲の記載内で様々な修正及び変更を施すことができる。
2 内燃機関
2b 排気通路
2c 排気浄化触媒
2d パティキュレートフィルタ
21 分岐通路
22 流量調整弁
23 冷却部
24 CO2捕捉部
25 吸引部
32 CO2捕捉制御部
Claims (7)
- 動力源としての内燃機関及び電動機と、
該電動機に電力を供給すると共に該内燃機関の出力によって充電可能なバッテリと、
を備えると共に、前記内燃機関が前記内燃機関から排出される排気ガスを流通させる排気通路を備える、ハイブリッド車両に搭載されたCO2捕捉装置であって、
前記排気通路から分岐された分岐通路と、
前記分岐通路に設けられ且つ流入した前記排気ガス中のCO2を捕捉するCO2捕捉部と、
前記バッテリの電力を用いて前記CO2捕捉部を冷却する冷却部と、
前記分岐通路に流入する前記排気ガスの流量を調整する流量調整部と、
前記冷却部及び前記流量調整部を制御するCO2捕捉制御部と、
を備え、
前記CO2捕捉制御部は、前記バッテリの充電率が所定のSOC閾値以下になった場合には、前記冷却部による冷却を停止させると共に、前記CO2捕捉部への前記排気ガスの流通を遮断するように前記流量調整部を制御する、CO2捕捉装置。 - 前記内燃機関は、前記排気通路において前記CO2捕捉装置よりも排気ガス流れ方向上流側に設けられ且つ前記排気ガス中の粒子状物質を捕集するパティキュレートフィルタを備え、
前記CO2捕捉制御部は、前記パティキュレートフィルタの温度をフィルタ再生温度に保持するフィルタ再生処理が行われている場合には、前記冷却部による冷却を停止させると共に、前記CO2捕捉部への前記排気ガスの流通を遮断するように前記流量調整部をさらに制御する、請求項1に記載のCO2捕捉装置。 - 前記CO2捕捉制御部は、前記排気ガス中のCO2濃度が所定の濃度閾値以下の場合には、前記冷却部による冷却を停止させると共に、前記CO2捕捉部への前記排気ガスの流通を遮断するように前記流量調整部をさらに制御する、請求項1又は2に記載のCO2捕捉装置。
- 前記分岐通路は、前記CO2捕捉部よりも排気ガス流れ方向下流側で前記排気通路と合流するように接続され、
前記CO2捕捉装置は、前記排気通路への合流位置と前記CO2捕捉部との間において前記分岐通路に設けられた開閉弁をさらに含み、
前記CO2捕捉制御部は、前記バッテリの充電率が所定のSOC閾値以下になった場合、前記開閉弁を閉状態にするように前記開閉弁を制御する、請求項1乃至3のいずれか一項に記載のCO2捕捉装置。 - 前記CO2捕捉制御部は、前記CO2捕捉部への前記排気ガスの流通を遮断するように前記流量調整部を制御した後、前記冷却部による冷却を停止する、請求項1乃至4のいずれか一項に記載のCO2捕捉装置。
- 前記バッテリの電力を用いて前記排気通路から前記排気ガスを吸引して該吸引した排気ガスを前記分岐通路に流入させる吸引部をさらに備え、
前記CO2捕捉制御部は、前記バッテリの充電率が前記所定のSOC閾値以下になった場合には、前記吸引部による吸引をさらに停止させる、請求項1乃至5のいずれか一項に記載のCO2捕捉装置。 - 前記CO2捕捉制御部は、前記吸引部を停止させた後に、前記CO2捕捉部への前記排気ガスの流通を遮断するように前記流量調整部を制御する、請求項6に記載のCO2捕捉装置。
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