Rotating speed control method based on flow demand of hydraulic system, controller and automobile

• Main Authors: WANG FAN, YIN XINGJIA, WANG XIAOJUN, SUN XIAN'AN, LIU ZUNPENG
• Format: Patent
• Language: Chinese; English
• Published: 12.10.2021
• Subjects: BLASTING; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; THERMAL INSULATION IN GENERAL; WEAPONS

The invention discloses a rotating speed control method based on the flow demand of an infinitely variable transmission hydraulic system, an infinitely variable transmission controller and an automobile. According to the invention, actually required flow of the infinitely variable transmission hydraulic system can be calculated in real time, i.e., the sum of a flow demand function of a speed ratio change of an infinitely variable transmission, an oil charge flow demand function of a clutch, an oil leakage flow demand function of the infinitely variable transmission and a cooling lubricating liquid flow demand function of the infinitely variable transmission is calculated as the total actual demand flow of the infinitely variable transmission hydraulic system; correspondingly, after the total actual demand flow is estimated, the demand rotating speed of an oil pump is calculated based on the total actual demand flow, the oil pump is controlled to operate according to the calculated demand rotating speed, and a