A regenerative braking continuously variable transmission for vehicles

Abstract

The invention belongs to the technical field of vehicle power drive, and relates to a regenerative braking stepless transmission for vehicles. A hydraulic accumulator, an electromagnetic switch valve, a variable pump-motor and a variable motor-pump are used for performing power transfer and conversion, confluence and shunting, so that the stepless transmission with the regenerative braking function is formed. The driving force generated from regenerative braking can start engines and drive the vehicles. The stepless transmission enables the engines or electric motors to be mainly operated in areas with the optimal economic working condition, the installed power of the engines is reduced, the volume of a power transmission system is reduced, the efficiency of the power transmission system is improved, and at the same time, the regenerative braking function is achieved. The structure of the regenerative braking stepless transmission is compact, the cost of the transmission system is reduced, the supported technology is mature, and the regenerative braking stepless transmission is suitable for buses, passenger vehicles, trucks, engineering machinery and the like, and has wide application fields and market prospects.

Description

Technical field: [0001] The invention belongs to the technical field of vehicle power transmission, and relates to a vehicle regenerative braking continuously variable transmission, which realizes the function of the vehicle power transmission system based on a hydraulic motor, a hydraulic pump and an electromagnetic switch valve. Background technique: [0002] At present, energy and environmental issues have become the focus of restricting the development of human society. Research on energy-saving, green and environmentally friendly power and energy storage systems is an important measure to deal with energy crisis and environmental pollution. More than 60% of China's oil consumption is in the field of transportation, mainly the energy consumption of automobiles. The average utilization rate of fuel heat energy in automobiles is 14%. When electric vehicles use thermoelectricity, the utilization rate of fossil energy to wheel power is only 16%. Therefore, reducing the consu...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the defects of large size and complex structure caused by the excessive dependence of the continuously variable transmission device, vehicle transmission system and technology on the planetary gear system, clutch, etc. in the prior art, and seek a design to provide a regenerative braking system for vehicles Continuously variable transmission, using hydraulic accumulator, electromagnetic switch valve, variable pump-motor and variable motor-pump for power transmission conversion, confluence and diversion, forming a continuously variable transmission with regenerative braking function, the driving force generated by regenerative braking The driving force of the engine or the electric motor does not converge and synthesize through the planetary gear system, and the power interruption, connection or speed change does not rely on the clutch. The driving force generated by regenerative braking can realize engine starting and vehicle driving, etc. The continuously variable transmission makes the engine Or the motor mainly works in the best economic working condition area, reducing the installed power of the engine, reducing the volume of the power transmission system, improving the efficiency of the power transmission system, and realizing the regenerative braking function at the same time

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