IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0156072
(2011-06-08)
|
등록번호 |
US-8347850
(2013-01-08)
|
우선권정보 |
DE-10 2008 061 769 (2008-12-11) |
발명자
/ 주소 |
- Schenk, Martin
- Guenthner, Michael
|
출원인 / 주소 |
- Bayerische Motoren Werke Aktiengesellschaft
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
4 |
초록
▼
An internal-combustion engine can be operated in a homogeneous charge compression ignition mode at least under certain operating conditions. The combustion mixture present in the combustion chamber reaches auto-ignition conditions and ignites itself. The internal-combustion engine includes a trigger
An internal-combustion engine can be operated in a homogeneous charge compression ignition mode at least under certain operating conditions. The combustion mixture present in the combustion chamber reaches auto-ignition conditions and ignites itself. The internal-combustion engine includes a triggering unit for triggering the auto-ignition during the homogeneous charge compression ignition mode before the auto-ignition conditions have been reached. The triggering unit is constructed as a corona ignition system and can be operated for triggering the auto-ignition during the homogeneous charge compression ignition mode, particularly by generating a non-thermal plasma.
대표청구항
▼
1. An internal-combustion engine operable in a homogeneous charge compression ignition mode at least under certain operating conditions, the engine comprising: a triggering unit operatively configured to trigger auto-ignition during the homogeneous charge compression ignition mode before a combustio
1. An internal-combustion engine operable in a homogeneous charge compression ignition mode at least under certain operating conditions, the engine comprising: a triggering unit operatively configured to trigger auto-ignition during the homogeneous charge compression ignition mode before a combustion mixture in a combustion chamber of the internal-combustion engine reaches auto-ignition conditions to auto-ignite;wherein the triggering unit is a corona ignition system operable for triggering the auto-ignition during the homogeneous charge compression ignition mode by a generated non-thermal plasma, and as a result of a generated corona discharge, an initialization of a spatial auto-ignition, which is targeted with respect to time, occurs, such that radicals form along corona threads of the corona ignition system, which initializes a rapid ignition along the corona threads, and the auto-ignition is thus triggered in remaining regions of the combustion chamber. 2. The internal-combustion engine according to claim 1, further comprising: an ignition system operatively configured to ignite the combustion mixture outside of the homogeneous charge compression ignition mode; andwherein the corona ignition system is configured as the ignition system for igniting the combustion mixture outside of the homogeneous charge compression ignition mode. 3. The internal-combustion engine according to claim 1, wherein during the homogeneous charge compression ignition mode, the combustion mixture present in the combustion chamber in a condition close to an auto-ignition threshold is caused to auto-ignite by a corona discharge of the corona ignition system. 4. The internal-combustion engine according to claim 1, wherein during the homogeneous charge compression ignition mode, the combustion mixture present in the combustion chamber in a condition close to an auto-ignition threshold is caused to auto-ignite by a corona discharge of the corona ignition system. 5. The internal-combustion engine according to claim 3, wherein the corona discharge is generated as a function of a desired optimal ignition point-in-time. 6. The internal-combustion engine according to claim 4, wherein the corona discharge is generated as a function of a desired optimal ignition point-in-time. 7. The internal-combustion engine according to claim 2, wherein at least one of an ignition energy, an ignition point-in-time, an ignition duration, and a modulation of a voltage course of the corona ignition system is predefined in a variable manner for triggering the auto-ignition during operation of the internal-combustion engine within the homogeneous charge compression ignition mode and/or outside of the homogeneous charge compression ignition mode. 8. The internal-combustion engine according to claim 1, wherein the corona ignition system is ignitable multiple times within one working cycle of the internal-combustion engine. 9. The internal-combustion engine according to claim 1, wherein the corona ignition system is additionally operable as a mixture processing unit for the radical-chemical processing of the combustion mixture. 10. The internal-combustion engine according to claim 1, wherein the corona ignition system is additionally operable as an ignition unit for igniting a mixture present in the combustion chamber during an intermediate compression phase. 11. The internal-combustion engine according to claim 9, wherein the corona ignition system is additionally operable as an ignition unit for igniting a mixture present in the combustion chamber during an intermediate compression phase. 12. A process for controlling an internal-combustion engine during a homogeneous charge compression ignition mode in which a combustion mixture present in a combustion chamber ignites upon reaching auto-ignition conditions, the process comprising the acts of: generating a non-thermal plasma via a corona ignition system operating as a triggering unit; andtriggering the auto-ignition with the generated non-thermal plasma during the homogeneous charge compression ignition mode, before the auto-ignition conditions have been reached,wherein, as a result of a generated corona discharge, an initialization of a spatial auto-ignition, which is targeted with respect to time, occurs, such that radicals form along corona threads of the corona ignition system, which initializes a rapid ignition along the corona threads, and the auto-ignition is thus triggered in remaining regions of the combustion chamber. 13. The process according to claim 12, wherein the triggering act further comprises the acts of: bringing the combustion mixture present in the combustion chamber into a condition close to an auto-ignition threshold; andsubsequently triggering the auto-ignition via the corona discharge generated by the corona ignition system. 14. The process according to claim 13, wherein the corona discharge for triggering the auto-ignition in the homogeneous charge compression ignition mode is generated as a function of a desired optimal ignition point-in-time. 15. The process according to claim 12, further comprising the acts of: predefining in a variable manner at least one of an ignition energy, an ignition point-in-time, an ignition duration, and a modulation of a voltage course of the corona ignition system; andauto-igniting the combustion mixture in the homogeneous charge compression ignition mode based upon the predefined characteristic. 16. The process according to claim 12, wherein several corona discharges are initiated within one working cycle. 17. The process according to claim 12, further comprising the act of: additionally operating the corona ignition system as at least one of an ignition system for igniting the combustion mixture outside the homogeneous charge compression ignition mode and a mixture processing unit for radical-chemical processing of the combustion mixture. 18. The process according to claim 12, wherein the corona ignition system is additionally operated as an ignition unit for igniting a mixture present in the combustion chamber during an intermediate compression phase. 19. The process according to claim 17, wherein the corona ignition system is additionally operated as an ignition unit for igniting a mixture present in the combustion chamber during an intermediate compression phase.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.