A control method for interruption shift response in static shift of automatic transmission

Abstract

A control method for the gear shifting interruption response in static gear shifting of an automatic transmission comprises the following steps that 1, the rapid oil charge time of a D-gear clutch is acquired; 2, the rapid oil charge pressure of the D-gear clutch is acquired; 3, 4 and 5, the total slow oil charge time is acquired; 6, 7 and 8, the total slope of increase of the oil charge pressure of the D-gear clutch is acquired; 9 and 10, the pressure lowering slope of oil of the D-gear clutch is acquired; 11, the compensation slope of oil pressure lowering of the D-gear clutch is acquired through the rotating speed change rate average value of an input shaft of the automatic transmission; 12, the total slope of oil pressure lowering of the D-gear clutch is acquired; 13, the steps from 1 to 9 are repeated to obtain the rapid oil charge time, the rapid oil charge pressure, the slow oil charge pressure and the oil pressure increase slope of an R-gear clutch are obtained, and oil charge control is carried out on the R-gear clutch; and 14, the oil pressure of the R-gear clutch is controlled to be increased, the clutch is gradually pressed, and finally the whole gear shifting process is completed. According to the control method, the gear shifting time is effectively shortened, the gear shifting quality is guaranteed, and the gear shifting request is rapidly completed.

Description

technical field [0001] The invention provides a control method for interrupting shifting response in static shifting of an automatic transmission, which relates to a shifting control method and belongs to the technical field of automatic transmissions for automobiles. Background technique [0002] Static shift means that when the vehicle is stationary or at low speed, the driver moves the shift handle to cause the transmission to shift gears. During the static shift process, the driver often moves the shift handle again, and the automatic transmission interrupts the current shift and executes a new shift command. , that is, interrupt the current shift and re-execute a new shift before a shift process is completed, and this type of shift is an interrupted shift. When the automatic transmission is interrupted during the static shift, how does the automatic transmission quickly respond to the driver's shift command, quickly realize the driver's driving intention, and complete t...

AI Technical Summary

Problems solved by technology

The traditional control method of interrupted shift response is to continue the current shift until the current shift is completed, then process and respond to the interrupted shift request and execute a new shift, that is, the initial gear and the intermediate gear After the gear shift is completed, the gear shift control method from the intermediate gear to the target gear can be carried out, which can ensure the smoothness of the gear shift, but at the same time, because two complete gear shifts have occurred, the time for gear shifting must be increased.

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