엔진의 점화시기 제어장치

• Format: Patent
• Language: Korean
• Published: 30.04.1998
• Subjects: BLASTING; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION; COMBUSTION ENGINES; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; IGNITION, OTHER THAN COMPRESSION IGNITION, FORINTERNAL-COMBUSTION ENGINES; LIGHTING; MECHANICAL ENGINEERING; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES; WEAPONS

본 발명은 엔진의 점화시기 제어장치, 특히 최대의 축 토오크를 발생하는데 필요한 최소점화 진각값(이른바 MBT)이 되도록 점화시기를 제어하는 것에 관한 것으로, 실린더 내 총 가스 중량을 미연 가스밀도 기본값 및 층류 화염속도 기본값으로 나눈 값에 소정의 착화 지연시간을 가산하고, 이 가산값을 크랭크각에 단위변환한 값을 MBT가 얻어지는 기본점화시기로서 연산하는 수단과, 이 기본 점화시기에서 화염점화를 행하는 수단을 포함하는 엔진의 점화시기 제어장치이다. A predetermined firing delay time B1 is added to a value obtained by dividing a total gas weight Gcyl in a cylinder by an unburnt gas density basic value DENS and a laminar flow flame velocity basic value FLML. The value obtained by this calculation is unit converted and then set as a basic ignition timing for which a minimum ignition advance value or MBT is obtained. In this way, ignition timing control is optimized for various engine running conditions without preparing a plurality of maps.