IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0853157
(2001-05-11)
|
우선권정보 |
JP-0149824 (2000-05-17) |
발명자
/ 주소 |
- Yoshizaki, Kouji
- Sasaki, Shizuo
- Gotoh, Masato
- Ito, Takekazu
|
출원인 / 주소 |
- Toyota Jidosha Kabushiki Kaisha
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
9 인용 특허 :
3 |
초록
▼
An internal combustion engine has an EGR passage provided with an EGR control valve and a catalyst for purifying the EGR gas. When the internal combustion engine operates in a low-temperature combustion mode in which the amount of EGR gas supplied to a combustion chamber is larger than that of EGR g
An internal combustion engine has an EGR passage provided with an EGR control valve and a catalyst for purifying the EGR gas. When the internal combustion engine operates in a low-temperature combustion mode in which the amount of EGR gas supplied to a combustion chamber is larger than that of EGR gas with which the amount of soot produced reaches a peak, and almost no soot is produced, a controller reduces an opening amount of the exhaust gas recirculation control valve so as to increase an exhaust gas temperature, and reduces an opening amount of the throttle valve so as to suppress an increase in the amount of the EGR gas, thereby to reduce reductions in the temperature of the EGR gas and the temperature of the catalyst.
대표청구항
▼
An internal combustion engine has an EGR passage provided with an EGR control valve and a catalyst for purifying the EGR gas. When the internal combustion engine operates in a low-temperature combustion mode in which the amount of EGR gas supplied to a combustion chamber is larger than that of EGR g
An internal combustion engine has an EGR passage provided with an EGR control valve and a catalyst for purifying the EGR gas. When the internal combustion engine operates in a low-temperature combustion mode in which the amount of EGR gas supplied to a combustion chamber is larger than that of EGR gas with which the amount of soot produced reaches a peak, and almost no soot is produced, a controller reduces an opening amount of the exhaust gas recirculation control valve so as to increase an exhaust gas temperature, and reduces an opening amount of the throttle valve so as to suppress an increase in the amount of the EGR gas, thereby to reduce reductions in the temperature of the EGR gas and the temperature of the catalyst. lyoxal. 12. A method according to claim 11, wherein the dialdehyde is glutaraldehyde. 13. A method according to claim 10, wherein the dialdehyde is activated by treatment with a mineral acid. 14. A method according to claim 7, wherein the cross-linking agent comprises an iron (III) salt. 15. A method according to claim 7, wherein the cross-linking agent comprises a zirconium salt. 16. A method according to claim 7, wherein the cross-linking agent comprises a titanium salt. 17. A method according to claim 7, wherein the cross-linking agent comprises a chromium compound. 18. A method according to claim 7, wherein the cross-linking agent comprises pentahydroxy(tetradecanoate)dichromium. 19. A method according to claim 7, wherein the cross-linking agent comprises a pentahydroxy(tetradecanoate) derivative. 20. A method according to claim 19, wherein the cross-linking agent of the first substance comprises one or more of: boric acid; a boron salt; an aldehyde; and a transition metal compound. 21. A method according to claim 20, wherein the cross-linking agent comprises a Group I or Group II metal borate. 22. A method according to claim 20, wherein the cross-linking agent comprises formaldehyde. 23. A method according to claim 20, wherein the cross-linking agent comprises a dialdehyde. 24. A method according to claim 23, wherein the dialdehyde is glyoxal. 25. A method according to claim 23, wherein the dialdehyde is glutaraldehyde. 26. A method according to claim 23, wherein the dialdehyde is activated by treatment with a mineral acid. 27. A method according to claim 20, wherein the cross-linking agent comprises an iron (III) salt. 28. A method according to claim 20, wherein the cross-linking agent comprises a zirconium salt. 29. A method according to claim 20, wherein the cross-linking agent comprises a titanium salt. 30. A method according to claim 20, wherein the cross-linking agent comprises a chromium compound. 31. A method according to claim 20, wherein the cross-linking agent comprises pentahydroxy(tetradecanoate)dichromium. 32. A method according to claim 20, wherein the cross-linking agent comprises a pentahydroxy(tetradecanoate)dichromium derivative. 33. A method according to claim 7, wherein the cross-linking agent comprises boric acid and the inhibitor comprises at least one metal salt which reacts with the cross-linking agent to form an insoluble borate. 34. A method according to claim 7, wherein the cross-linking agent comprises a metal borate and the inhibitor comprises at least one metal salt which reacts with the cross-linking agent to form an insoluble borate. 35. A method according to claim 7, wherein the cross-linking agent comprises at least one transition metal complex and the inhibitor comprises at least one alkylenediaminetetraacetic acid. 36. A method according to claim 7, wherein the cross-linking agent comprises at least one transition metal complex and the inhibitor comprises at least one alkylenediaminetetraacetic acid derivative. 37. A method according to claim 3, wherein the inhibitor constitutes 0.5 to 50 wt % of the second substance. 38. A method according to claim 3, wherein the third substance comprises at least one compound capable of taking part in a free-radical polymerisation reaction, the first substance comprises at least one component of a free-radical generating system and the second substance comprises an inhibitor for the free-radical generating system. 39. A method according to claim 38, wherein the third substance comprises at least one further component of the free-radical generating system. 40. A method according to claim 38, wherein the polymerisable compound is an acrylamide. 41. A method according to claim 40, wherein the acrylamide is grafted onto a polymeric compound. 42. A method according to claim 41, wherein the polymeric compound is polyvinyl alcohol. 43. A method according to claim 38, wherein the free-radical generating system is an oxidative system and the second su
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