Device and method for controlling failure of metal belt ring of continuously variable transmission

Abstract

The invention discloses a device and method for controlling failure of a metal belt ring of a continuously variable transmission. The control device includes a camera, a continuously variable transmission, a control device and a failure calculation unit; Between them, the lens axis of the camera is parallel to the axis of the driving wheel shaft, and the lens is facing the metal belt ring of the continuously variable transmission; the control device includes a TCU controller, a motor controller and a failure calculation unit, and the motor controller is connected to the failure calculation unit. The calculation unit is connected with the TCU controller, and the TCU controller is connected with the continuously variable hydraulic system; the failure calculation unit is connected with the camera, and receives the beating signal value of the belt ring captured by the camera. The invention has simple structure and low cost, can reduce the risk of metal belt fracture and failure of the continuously variable transmission under the condition of high rotation speed, and ensures that the continuously variable transmission can be applied to electric vehicles.

Description

technical field [0001] The invention relates to a device and method for controlling failure of a metal belt ring of a continuously variable transmission. Background technique [0002] After scientific and technological research, my country has made significant progress in electric vehicle technology, and the overall technical level is close to the international advanced level. However, in terms of transmission system technology, electric vehicles all use single-speed ratio reducers, which have problems such as large motor volume and energy consumption, high motor temperature at low efficiency stages, low battery life, and insufficient acceleration performance at medium and high speed stages. In the long run, equipping motors with multi-speed transmissions will be the development trend of electric vehicles in the future. Currently used multi-gear transmissions mainly include the following three types: hydraulic automatic transmission (AT), electromechanical automatic transmi...

AI Technical Summary

Problems solved by technology

[0003] Under the condition of high-speed operation of electric vehicles, especially when it exceeds 8000 rpm, the CVT "pulley-metal sheet-belt ring" discontinuity will produce fretting friction and flutter effects when the discontinuity of the CVT contacts, that is, the belt ring is on the saddle surface of the steel sheet Back and forth and up and down, the belt ring is very easy to wear and fatigue cracks will occur, which will eventually lead to the breakage of the belt ring, which will cause the CVT transmission to fail, and the life of the CVT will be greatly reduced

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