GEAR SHIFT CONTROLLER FOR VEHICLE IN HIGH ACCELERATION

摘要

PROBLEM TO BE SOLVED: To set a gear shift point when opening fully by taking change of change rate of turbine rotation speed by torque phase after outputting an up shift command into account and to shift gear stably in the vicinity of target maximum rotation speed without being affected by difference of individual in hardware of a transmission device.

SOLUTION: Virtual maximum rotation speed (gntista) which is the maximum rotation speed when turbine rotation speed (NT) is changed by reference rotation change rate (gdntm) is obtained based on turbine rotation speed (ntsftchg) when outputting the up shift command, invalid time (tista) from the up shift command to start of inertia phase, and the reference rotation change rate (gdntm) determined in advance to compensate a gear shift point (nomchg) when opening fully so that the virtual maximum rotation speed (gntista) approaches the target maximum rotation speed (ntm).

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