System and method for detecting addition of engine lubricant

• Main Authors: Gu, Zhuping, Ma, Hongtao, Zheng, Fengliang, Wang, Bingzheng, Chen, Lei, Huang, Lei, Wang, Rong, Ding, Huifeng, Wu, Jiaju
• Format: Patent
• Language: English
• Published: 17.11.2016
• Subjects: BLASTING; CRANKCASE VENTILATING; ENGINE PLANTS IN GENERAL; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; LUBRICATING; LUBRICATING INTERNAL COMBUSTION ENGINES; LUBRICATING OF MACHINES OR ENGINES IN GENERAL; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; STEAM ENGINES; THERMAL INSULATION IN GENERAL; WEAPONS

Abstract The present invention relates to a method for detecting addition of engine lubricant, comprising: determining whether the difference value between the lubricant quantity at a first timing and that at a second timing is s greater than a first threshold value; delaying a period and determining whether the difference value between the lubricant quantity at a third timing and that at a fourth timing is greater than a second threshold value in response to that the difference value between the lubricant quantity at the first timing and that at the second timing is greater than the first threshold o value; and detecting the lubricant increment in response to that the difference value between the lubricant quantity at the third timing and that at the fourth timing is greater than the second threshold value. Determining operation condition of the aircraft; if te Ending the aircraft is in the phase where the process for <--- N o ---> engine is shut: down or the aircraft detecting 1s being powered on or the engine lubricant addition is started Yes 220 Obtaining lubricant quantity at a first time point DT1 Obtaining lubricant quantity at a second time point DT2 No DT2 240 Obtaining lubricant quantity at a third time point DT3 Comparing lubricant quantity at the second time point or the third - time point with that at the first time point Obtaining quantity of lubricant addition Fig.2