Online self-learning method and system for flow characteristics of control valve of supercharger

• Main Authors: ZHANG PENG, ZHANG GUIMING, ZHU HAO, YANG XUEZHU, LI SUWEN, CAI PENG
• Format: Patent
• Language: Chinese; English
• Published: 29.06.2018
• Subjects: BLASTING; COMBUSTION ENGINES; COMBUSTION ENGINES IN GENERAL; CONTROLLING COMBUSTION ENGINES; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; INTERNAL-COMBUSTION PISTON ENGINES; LIGHTING; MECHANICAL ENGINEERING; WEAPONS

The invention provides an online self-learning method for the flow characteristics of a control valve of a supercharger. The method comprises the following steps of judging the working conditions of an engine at a preset period; when the engine is determined to be in a preset working condition which does not affect normal operation of the engine, executing the flowing self-learning operation for the flow characteristics of the control valve of the supercharger: performing self-learning on the pressure of an air source flowing into the control valve of the supercharger so as to enable the outlet pressure of the control valve of the supercharger to serve as the pressure of the air source, and performing self-learning on the characteristics of the control valve of the supercharger so as to obtain a relation table between the actual outlet pressure under different duty ratios and the duty ratios of the control valve of the supercharger; and updating a supercharger characteristic table in asupercharger control alg