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[CN 201610656544.2] Power Switching Control Method of Hydro-mechanical Stepless Transmission


[CN 201610656544.2] Title of Power Switching Control Method for Hydraulic-Mechanical Stepless Transmission: Application Number of Power Switching Control Method for Hydraulic-Mechanical Stepless Transmission: CN 201610656544.2 Applicant: Yanshan University Application Date: 2016-8-12 Patent Type: Invention Application The present invention provides a power switching control method for hydraulic-mechanical stepless transmission, including the following steps: the hydraulic-mechanical stepless transmission controller monitors the key state parameters of the current segment in real time; the ratio of the fixed displacement hydraulic component speed to the input speed is used as the criterion of the ideal shift timing, and the target clutch is controlled to be combined at the ideal shift timing to form two clutches overlap; then the variable displacement hydraulic component is adjusted during the clutch overlap process to compensate for the change in the speed of the target fixed displacement hydraulic component caused by the interchange of hydraulic component functions; finally, the current clutch is separated. By using this method, part of the power transmission can be realized during the segment change process, and there is no change in the speed before and after the segment change, which significantly improves the quality of the hydraulic-mechanical stepless transmission segment change.