Electronically controlled electric six-speed automatic shift system

Abstract

The invention discloses an electronic-control electric six-gear automatic gear-shifting system, which comprises a parallel shaft gearbox, a driving motor, a gear-shifting mechanism and an electronic-control unit, wherein the gear-shifting mechanism is composed of a first-gear and second-gear shifting mechanism, a third gear and fourth-gear shifting mechanism and a fifth-gear and sixth-gear shifting mechanism. The first-gear and second-gear shifting mechanism comprises a third ball screw shaft, a third ball screw nut, a third gear-shifting motor, a third gear-shifting square support shaft, a fourth sensor and a first-gear and second-gear shifting poking fork. The third gear-shifting square support shaft is inserted in a square through hole of the first-gear and second-gear shifting poking fork, the end of an input shaft of the fourth sensor is inserted into a U-shaped groove of the third gear-shifting square support shaft to be fixedly connected with the U-shaped groove, and the third ball screw nut is sleeved on the third ball screw shaft. Trunnions on two sides of the third ball screw nut are movably connected with an opening positioned at one end of the first-gear and second-gear shifting poking fork by assembly, and an output shaft of the third gear-shifting motor is inserted into a square inserting groove positioned at one end of the third ball screw shaft 3 to be fixedly connected with the square inserting groove.

Description

technical field [0001] The present invention relates to an automatic transmission device for vehicles, more specifically, the present invention relates to an electronically controlled electric six-speed automatic shifting system applied to electric vehicles and hybrid vehicles. Background technique [0002] Environmental pollution and energy crisis have made people pay more and more attention to environmental protection and effective and rational use of energy. High-efficiency, energy-saving and environmentally friendly electric vehicles have gradually become the development trend of the automotive industry, and their technology has also been greatly developed and improved. EVs and HEVs have different needs for automatic shifting systems than conventional vehicles. At present, most of the automatic shifting systems used are electronic control-hydraulic automatic shifting system and electric control-pneumatic automatic shifting system. The electric control pneumatic automatic...

AI Technical Summary

Problems solved by technology

At present, most of the automatic shifting systems used are electronic control-hydraulic automatic shifting system and electric control-pneumatic automatic shifting system. The electric control pneumatic automatic shifting system is useful for large or heavy vehicles with air source. However, in cars, due to the high requirements for shifting quality, there are relatively few applications. Although the electronically controlled hydraulic automatic shifting system has the advantages of large capacity, simple operation, easy to achieve safety protection, and certain ability to absorb shocks and shocks, etc., However, in a system controlled by a high-speed switching valve, the performance of its actuator is greatly affected by temperature changes, resulting in poor shifting quality of the car. In addition, the structure of the electronic control-hydraulic system is complicated and difficult to manufacture. The processing accuracy is very high, especially the processing of high-speed solenoid valves, which is difficult for ordinary manufacturers to process, so the cost is high

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