IGNITION TIMING DETECTOR FOR DIESEL ENGINE

• Main Authors: MATSUMOTO HISASHI, HASEGAWA KOUICHI, INOUE TOKUTA, SUZUKI YUTAKA, IKEDA SHINJI, YASUURA NOBUSHI, TSUZUKI YOSHIHIKO, OOSUGA ISAO, IBUKI NORITAKA, AOKI KEIJI
• Format: Patent
• Language: English
• Published: 17.09.1985
• Subjects: BLASTING; COMBUSTION ENGINES; COMBUSTION ENGINES IN GENERAL; CONTROLLING COMBUSTION ENGINES; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; IGNITION, OTHER THAN COMPRESSION IGNITION, FORINTERNAL-COMBUSTION ENGINES; INTERNAL-COMBUSTION PISTON ENGINES; LIGHTING; MECHANICAL ENGINEERING; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES; WEAPONS

PURPOSE:To make the sticking of soot much reducible and, if any, make it possible to be burned off with a combustion flame, by situating the detection surface of an optical detector in a position being more recessed than a combustion chamber where an air-fuel ratio is lean as well as in such a position as being subjected to the direct combustion flame. CONSTITUTION:When an injection pump 16 is driven with a signal out of an electrical control circuit 23, fuel is spouted to a combustion chamber 14 from an injection nozzle 15 and ignited with high pressure, high temperature air by the ascent of a piston 12. At this time, inside the combustion chamber 14, there is relatively rich mixture and soot is liable to be produced but the position of a detecting part 18 of an optical detector 17 is more recessed than the combustion chamber 14 so that this part is relatively lean in mixture, so generation of the soot is little, if any. And, when an engine is warmed up, temperature in the flame subjected to the detecting part 18 goes up, thus the sticking soot can be burned off. With this constitution, accurate and stable ignition timing is detectable for a long period of time.