A gear selection structure and a gear selection method

Abstract

The invention relates to a mechanical type automatic speed changer technique, in particular to a gear shifting structure and a gear shifting method for a mechanical type automatic speed changer. The gear shifting structure is suitable for the mechanical type automatic speed changer and comprises a reverse gear fork frame, a first gear and second gear fork frame, a third gear and fourth gear fork frame, a fifth gear and sixth gear fork frame, a gear shifting finger, a position sensor and a controller. The controller is used for controlling the movement of the gear shifting finger, the gear shifting finger can shift all fork frames, the fork frames can drive a shifting fork, the shifting fork can shift a synchronizer, and accordingly gear engagement can be achieved. When a vehicle stops and a gear shifting rod is at a neutral gear position, the controller can control the gear shifting finger to be at the position of the reverse gear fork frame. An embodiment of the gear shifting structure solves the position problem of the gear shifting finger when the vehicle stops and the gear shifting rod is at the neutral gear position and further solves the problem that how the gear shifting finger moves.

Description

technical field [0001] The invention relates to a mechanical automatic transmission technology, in particular to a gear selection structure and a gear selection method of the mechanical automatic transmission. Background technique [0002] Under the condition that the overall transmission structure remains unchanged, AMT realizes the automation of shifting by adding an automatic operation system controlled by TCU. The driver only needs to move the shift lever to enter the D gear if he wants to enter the forward gear, and only needs to toggle the gear lever to enter the R gear if he needs to enter the reverse gear. At the same time, the gear selection and shifting actions originally controlled by the driver are controlled by the TCU. Realization of automatic steering system. [0003] Such as figure 1 and figure 2 As shown, when the shift lever is in the N gear position, for the five-speed AMT, the gear selection position is set between the 3 / 4 gears in the mechanical stru...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the embodiments of the present invention is to provide a gear selection structure and a gear selection method, so as to solve the problem of the position of the gear selection finger when the shift lever is in the neutral position after the vehicle stops and how the gear selection finger moves to select gears.

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