A start-up control method for a hybrid continuously variable transmission

Abstract

The invention discloses a starting control device and a control method of a hybrid continuously variable transmission. The device includes a forward and reverse gear mechanism, a gear starting mechanism, a speed reduction mechanism and wheels; the forward and reverse gear mechanism includes a planetary gear system; The input shaft, the planet carrier are connected with the engine, the reverse gear brake is set between the ring gear and the car body, and the forward gear clutch is set between the sun gear and the planet carrier; the gear starting mechanism includes gear Ⅰ, gear Ⅱ and gear Ⅲ meshed in sequence ; Clutch Ⅰ is provided between gear Ⅰ and the planet carrier; Clutch Ⅱ is provided between the rotating shaft of gear Ⅱ and the output shaft of the motor; Clutch Ⅲ is provided between the rotating shaft of gear Ⅲ and the rotating shaft of the generator, and the rotating shaft of gear Ⅲ and the reduction mechanism A clutch IV is arranged between the input shafts of the motor; the generator is connected to the motor and the storage battery through the inverter; the output shaft of the reduction mechanism is connected to the wheels. The invention can provide a larger torque for the vehicle, improve the starting performance of the continuously variable transmission, and make the gear shifting of the vehicle stable.

Description

technical field [0001] The invention relates to a starting control device and a control method of a hybrid continuously variable transmission. Background technique [0002] In traditional vehicles, the continuously variable transmission often only provides driving power through the fuel engine. Although it can provide enough power for the transmission system, it is not environmentally friendly. Electrification and intelligence are the main trends in the development of automobiles today. It is estimated that by 2024, the production and sales of new energy vehicles in the Chinese market will reach 10 million, and the production and sales of smart cars will reach 16 million. With the gradual emergence and development of concepts such as electrification, networking, intelligence, and sharing, the new energy vehicle industry is undergoing tremendous changes. How to create more energy-saving, efficient, and safe travel has become the ultimate goal of the automotive industry's tran...

AI Technical Summary

Problems solved by technology

However, the acceleration performance of CVT is slightly worse, the maximum torque it can bear is relatively small, and the stability is relatively poor, especially when the vehicle needs a large torque in other complex working conditions such as starting conditions and uphill conditions, the CVT The torque transmitted by the transmission steel belt is relatively limited

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