IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0452636
(2003-06-03)
|
우선권정보 |
JP-0163970 (2002-06-05) |
발명자
/ 주소 |
- Asanuma, Takamitsu
- Tanaka, Toshiaki
- Hirota, Shinya
- Ueda, Takanori
- Yamashita, Tetsuya
- Nakano, Yasuaki
|
출원인 / 주소 |
- Toyota Jidosha Kabushiki Kaisha
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
17 인용 특허 :
7 |
초록
▼
An exhaust gas collecting apparatus, of an internal combustion engine including a collection vessel that can hold exhaust gas, an exhaust gas taking-out passage through which exhaust gas is introduced from an exhaust passage to the collection vessel, an exhaust gas introduction passage through which
An exhaust gas collecting apparatus, of an internal combustion engine including a collection vessel that can hold exhaust gas, an exhaust gas taking-out passage through which exhaust gas is introduced from an exhaust passage to the collection vessel, an exhaust gas introduction passage through which the exhaust gas is introduced from the collection vessel to the exhaust passage at a position upstream from the catalytic converter, a first valve that is switchable between a position where the introduction of the exhaust gas from the exhaust passage to the exhaust gas taking-out passage is permitted and a position where the introduction of the exhaust gas is prevented, and a second valve that is switchable between a position where the introduction of the exhaust gas through the exhaust gas introduction passage is permitted and a position where the introduction of the exhaust gas is prevented.
대표청구항
▼
1. An exhaust gas purifying method for purifying exhaust gas from an internal combustion engine by using a catalytic converter, the method comprising:a process of collecting at least a part of the exhaust gas discharged from the internal combustion engine into a collection vessel during a period fro
1. An exhaust gas purifying method for purifying exhaust gas from an internal combustion engine by using a catalytic converter, the method comprising:a process of collecting at least a part of the exhaust gas discharged from the internal combustion engine into a collection vessel during a period from a starting time of the internal combustion engine to satisfaction of a predetermined collection terminating condition; and a process of recirculating the exhaust gas collected in the collection vessel to an upstream side from the catalytic converter, wherein, in the collection process, a part of the exhaust gas is introduced to the catalytic converter, and a remaining part of the exhaust gas is collected into the collection vessel, the part of the exhaust gas introduced to the catalytic converter flowing to the atmosphere without being collected into the collection vessel. 2. The exhaust gas purifying method according to claim 1, wherein the collection terminating condition includes that an activation state of the catalytic converter has reached a predetermined level.3. The exhaust gas purifying method according to claim 1, wherein the collection terminating condition includes that a collection state of the exhaust gas into the collection vessel has reached a predetermined limit.4. The exhaust gas purifying method according to claim 1, wherein the recirculating of the exhaust gas from the collection vessel is prohibited at the time of starting the collection of the exhaust gas into the collection vessel, and the prohibition of the recirculating is cancelled when a predetermined recirculating permission condition has been satisfied.5. The exhaust gas purifying method according to claim 1, wherein the recirculating of the exhaust gas from the collection vessel is started after an activation state of the catalytic converter has reached the predetermined level.6. The exhaust gas purifying method according to claim 1, further comprising a process of stopping the collection of the exhaust gas into the collection vessel when the collection terminating condition has been satisfied.7. The exhaust gas purifying method according to claim 1, wherein, in the collection process, a total quantity of the exhaust gas is collected into the collection vessel.8. The exhaust gas purifying method according to claim 1, wherein, in the recirculating process, the exhaust gas is recirculated to an intake passage.9. The exhaust gas purifying method according to claim 1, wherein, in the collection process, the exhaust gas is compressed and collected into the collection vessel.10. The exhaust gas purifying method according to claim 1, wherein the exhaust gas is introduced into the collection vessel from an exhaust passage at a position upstream from the catalytic converter.11. The exhaust gas purifying method according to claim 10, further comprising a process of heating the catalytic converter with a heating device, in parallel with the collection of the exhaust gas into the collection vessel.12. The exhaust gas purifying method according to claim 1, wherein, in the recirculating process, the exhaust gas is recirculated to the exhaust passage at a position upstream from the catalytic converter.13. The exhaust gas purifying method according to claim 12, wherein pressure is applied to the exhaust gas in the collection vessel, to return the exhaust gas to the exhaust passage.14. An exhaust gas purifying apparatus that purifies exhaust gas from an internal combustion engine by using a catalytic converter, the apparatus comprising:a collection vessel that can hold exhaust gas; an exhaust gas taking-out passage through which exhaust gas is introduced from an exhaust passage of the internal combustion engine to the collection vessel; an exhaust gas introduction passage through which the exhaust gas is introduced from the collection vessel to an upstream side from the catalytic converter; a first valve device that is switchable between a position where the introduction of the exhaust gas from the exhaust passage to the exhaust gas taking-out passage is permitted and a position where the introduction of the exhaust gas is prevented; a second valve device that is switchable between a position where the introduction of the exhaust gas to the upstream side from the catalytic converter through the exhaust gas introduction passage is permitted and a position where the introduction of the exhaust gas is prevented; and a valve control device that controls the first valve device such that at least a part of the exhaust gas discharged from the internal combustion engine is collected into the collection vessel through the exhaust gas taking-out passage during a period from a starting time of the internal combustion engine to satisfaction of a predetermined collection terminating condition. wherein the first valve device is switchable to a position where a part of the exhaust gas is introduced to the catalytic converter, and a remaining part of the exhaust gas is introduced to the exhaust gas taking-out passage, the part of the exhaust gas introduced to the catalytic converter flowing to the atmosphere without being collected into the collection vessel. 15. The exhaust gas purifying apparatus according to claim 14, wherein the collection terminating condition includes that an activation state of the catalytic converter has reached a predetermined level.16. The exhaust gas purifying apparatus according to claim 14, wherein the collection terminating condition includes that a state of collecting the exhaust gas into the collection vessel has reached a predetermined limit.17. The exhaust gas purifying apparatus according to claim 14, wherein the valve control device controls the second valve device so as to prohibit the recirculating of the exhaust gas from the collection vessel at the time of starting the collection of the exhaust gas into the collection vessel, and cancel the prohibition of the recirculating when a predetermined recirculating permission condition has been satisfied.18. The exhaust gas purifying apparatus according to claim 14, wherein the valve control device controls the second valve device so as to start the recirculating of the exhaust gas from the collection vessel after an activation state of the catalytic converter has reached the predetermined level.19. The exhaust gas purifying apparatus according to claim 14, wherein the valve control device controls the first valve device so as to stop the collection of the exhaust gas into the collection vessel when the collection terminating condition has been satisfied.20. The exhaust gas purifying apparatus according to claim 14, wherein the first valve device is switchable to a position where a total quantity of the exhaust gas is introduced to the exhaust gas taking-out passage.21. The exhaust gas purifying apparatus according to claim 14, wherein the exhaust gas introduction passage is connected to an intake passage.22. The exhaust gas purifying apparatus according to claim 14, further comprising a compressing device that compresses the exhaust gas to feed the exhaust gas into the collection vessel.23. The exhaust gas purifying apparatus according to claim 14, wherein the collection vessel is formed in a shape of a bag whose volume is variable.24. The exhaust gas purifying apparatus according to claim 14, wherein the exhaust gas taking-out passage is branched from the exhaust passage at a position upstream from the catalytic converter.25. The exhaust gas purifying apparatus according to claim 24, further comprising a heating device that heats the catalytic converter and a heating control device that causes the heating device to perform heating in parallel with the collection of the exhaust gas into the collection vessel.26. The exhaust gas purifying apparatus according to claim 14, wherein the exhaust gas introduction passage is connected to the exhaust passage at a position upstream from the catalytic converter.27. The exhaust gas purifying apparatus according to claim 26, further comprising a pressurizing device that applies pressure to the exhaust gas within the collection vessel to feed the exhaust gas to the exhaust passage.28. An exhaust gas collecting apparatus of an internal combustion engine, comprising:a collection vessel that can hold exhaust gas discharged from the internal combustion engine; an exhaust gas taking-out passage through which exhaust gas is introduced from an exhaust passage of the internal combustion engine to the collection vessel; an exhaust gas introduction passage through which the exhaust gas is introduced from the collection vessel to the exhaust passage at a position upstream from a catalytic converter; a first valve device that is switchable between a position where the introduction of the exhaust gas from the exhaust passage to the exhaust gas taking-out passage is permitted and a position where the introduction of the exhaust gas is prevented; and a second valve device that is switchable between a position where the introduction of the exhaust gas from the exhaust gas introduction passage to the exhaust passage is permitted and a position where the introduction of the exhaust gas is prevented, wherein the first valve device is switchable to a position where a part of the exhaust gas is introduced to the catalytic converter, and a remaining part of the exhaust gas is introduced to the exhaust gas taking-out passage, the part of the exhaust gas introduced to the catalytic converter flowing to the atmosphere without being collected into the collection vessel. 29. The exhaust gas collecting apparatus according to claim 28, wherein the exhaust gas taking-out passage is branched from the exhaust passage at a position upstream from the catalytic converter.30. The exhaust gas collecting apparatus according to claim 28, wherein the first valve device is switchable to a position where a total quantity of the exhaust gas is introduced to the exhaust gas taking-out passage.31. The exhaust gas collecting apparatus according to claim 28, further comprising a pressurizing device that applies pressure to the exhaust gas within the collection vessel to feed the exhaust gas to the exhaust passage.32. The exhaust gas collecting apparatus according to claim 28, further comprising a compressing device that compresses the exhaust gas to feed the exhaust gas into the collection vessel.33. The exhaust gas collecting apparatus according to claim 28, wherein the collection vessel can be deformed according to a quantity of collected exhaust gas.
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