A New Powertrain System for Electric Hybrid Vehicles

2014 ◽  
Vol 577 ◽  
pp. 408-411
Author(s):  
Ren Guang Wang ◽  
Ming Jun Zhang ◽  
Chuan Long Shi
Keyword(s):  
Electric Vehicle ◽  
Electric Motor ◽  
Planetary Gear ◽  
Hybrid Vehicles ◽  
Regenerative Braking ◽  
Power Train ◽  
Powertrain System ◽  
Electric Driving ◽  
Left And Right ◽  
Different Parts

A new powertrain system was developed for electric vehicle driving application with adoption of one electric motor and one set of planetary gear set. With the control of fork, the sleeve of synchronizer can mesh two different parts on the left and right side; the system can provide pure electric driving, hybrid driving and regenerative braking operation modes to meet vehicle practical conditions. It can reduce both power train structure size and cost with fewer parts.

New Powertrain Development for Electric Hybrid Vehicles

2014 ◽  
Vol 654 ◽  
pp. 217-220
Author(s):  
Ren Guang Wang ◽  
Ming Jun Zhang ◽  
Chuan Long Shi
Keyword(s):  
Electric Motor ◽  
Lower Cost ◽  
Planetary Gear ◽  
High Energy ◽  
Hybrid Vehicles ◽  
Regenerative Braking ◽  
Operation Modes ◽  
Powertrain System ◽  
Electric Driving ◽  
New Type

A new type of powertrain system was developed for electric hybrid vehicles. It is mainly composed of engine, first electric motor, first shaft, synchronizer mechanism, second electric motor, planetary gear set and second shaft. The adoption of one planetary gear set and synchronizer mechanism make it can be operated in four different operation modes with high energy efficiency and lower cost, its four operation modes are pure electric driving, hybrid driving, independent engine driving and regenerative braking. These four operation modes can fit the vehicle practical conditions according to order from the control system.

Energy management of electric and hybrid vehicles dependent on powertrain configuration

2012 ◽  
Vol 2 (2) ◽  
Author(s):  
Bogdan Varga
Keyword(s):  
Electric Vehicle ◽  
Power Flow ◽  
Internal Combustion Engines ◽  
Combustion Engine ◽  
Planetary Gear ◽  
Internal Combustion ◽  
Hybrid Vehicle ◽  
Hybrid Vehicles ◽  
Electric Machine ◽  
Range Extender

AbstractElectric and hybrid vehicles are going to become the most reliable source of transport for future years. The CO2 and NOx targets in Euro 6 normative puts the producers of vehicles in a dilemma, whether to adapt the internal combustion engines further, or to develop hybrid or electric power trains that are going to reach the pollution limit of the future norms or to go below that. Before acting a well-developed strategy in determining the optimum power flow has to be developed by producers; CRUISE software is a tool with the unique and special characteristics to determine the optimum in this highly important area.Whether electric vehicle, electric vehicle with range extender or a hybrid with CVT or planetary gearbox, the complexity of the mathematical modules remains the same, giving the developer the possibility to create complex functions and distinctive characteristics for each component of the vehicle.With such a powerful tool it becomes extremely easy to evaluate the energy flow in all directions, from electric machine to the battery, from electric machine to the power generator, and from the electric machine to the internal combustion engine. Applying to the (Electric Vehicle, Electric Vehicle with Range Extender, Hybrid vehicle with CVT, Hybrid vehicle with planetary gear set) the ECE-15 in a virtual environment (urban driving cycle) the simulation results show a different usage, rate of storage and efficiency concerning the energy, this being dependent of the power train configuration in most part.

Regenerative braking algorithm for the electric vehicle with a seamless two-speed transmission

2018 ◽  
Vol 233 (4) ◽  
pp. 905-916 ◽  
Author(s):  
Zhou Zhou ◽  
Miaohua Huang
Keyword(s):  
Energy Efficiency ◽  
Electric Vehicle ◽  
Planetary Gear ◽  
Front Axle ◽  
Regenerative Braking ◽  
Motor Speed ◽  
Medium Level ◽  
Braking Torque ◽  
Upper Level ◽  
Braking Process

Better energy efficiency can be acquired by an appropriate shift operation during the regenerative braking process. In this work, an electric vehicle equipped with a two-speed automated transmission was used as the target vehicle. The transmission consists of two-stage planetary gear sets, a helical gear set, and two brakes. A hierarchical algorithm is presented for the electric vehicle. The upper-level algorithm was synthesized to assign braking force among regenerative braking, friction braking, front axle braking, and rear axle braking. Based on the motor external characteristic and ECE-R13 regulations, the work designed the dynamic distribution strategy for maximum use of regenerative braking. In the medium-level algorithm, the motor speed, efficiency characteristics, and assigned regenerative braking torque from upper-level algorithm were used to analyze the optimal shift points for improving regenerative efficiency. Then, a shift points table was drawn. In the lower-level algorithm, the linear control for the transmission was given to ensure seamless and smooth shifting. Finally, hardware-in-loop simulations were carried out. The results show that the proposed algorithm can improve performance in energy efficiency in the experimental braking events.

A New Type Power Train System of Electric Hybrid Vehicle

2013 ◽  
Vol 385-386 ◽  
pp. 747-750
Author(s):  
Yu Bing Zhang ◽  
Ren Jun Wan ◽  
Hong Tao Chen ◽  
Ren Guang Wang
Keyword(s):  
Planetary Gear ◽  
Transmission Efficiency ◽  
Coupling Mechanism ◽  
Power Train ◽  
Power Coupling ◽  
City Bus ◽  
Power Battery ◽  
Electric Driving ◽  
New Type ◽  
Train System

A new type of electric power train system was designed for fully hybrid electric city bus, which is mainly composed of engine, power coupling mechanism, first motor, second motor, motor controller, power train controller, power battery, and Drive axle. Its main characteristics of power coupling mechanism is adoption of one planetary gear set to realize the function that can be provided by two planetary gear sets. The new power train can be manufactured with lower cost because of its simple structure with higher transmission efficiency and less faults such as oil leakage. The new system can provide five operation modes for city bus, which are hybrid driving, pure electric driving, regenerative braking, grid charging, and stop charging.

Cooperative Brake Control Strategy for Electric Vehicle Equipped With a Two-Speed Uninterrupted Mechanical Transmission

2017 ◽  
Author(s):  
Yuzhuo Tai ◽  
Jian Song ◽  
Liangyao Yu ◽  
Shengnan Fang ◽  
Truong Sinh Nguyen
Keyword(s):  
Electric Vehicle ◽  
Urban Areas ◽  
Cooperative Control ◽  
Fuel Efficiency ◽  
Planetary Gear ◽  
Regenerative Braking ◽  
Mechanical Transmission ◽  
Lagrange Equations ◽  
Braking System ◽  
Dynamic Simulation Model

Regenerative braking of EV (electric vehicle) can enhance fuel efficiency to a great extent in urban areas. In addition, transmission plays a great role on the vehicle fuel economy and comfort and there are some research focus on the multi-speed transmission on EV. However, only limited number of scholars discussed about the influence of multi-speed transmission system on regenerative braking system. This paper focus on the effects of Electric Vehicle equipped with a Two-speed Uninterrupted Mechanical Transmission., which consist of a set of planetary gear, band brake and friction clutch. The transmission is capable of achieving seamless downshift which indicates that it can still transfer torque while downshifting. At the same time, as traction interruption of shift exerted an influence on the comfort during brake, this article put forward with a cooperative control algorithm considering the real response of electrohydraulic braking system in order to compensate the traction interruption and established an dynamic simulation model to testify the algorithm. The transmission dynamic model is developed by utilizing Euler-Lagrange equations to derive the motion while the other models are some simplified models. The whole model is applied by using the SimDriveline library of the MATLAB/Simulink. The simulation results of EV which commit a downshift while brake and the EV keep the gear are compared at the last demonstrate that the downshift strategy can save more energy without excessive oscillations.

scholarly journals An Embedded Controller Application with Regenerative Braking for the Electric Vehicle

2020 ◽  
Vol 26 (1) ◽  
pp. 10-17
Author(s):  
Yusuf Karabacak ◽  
Ali Uysal
Keyword(s):  
Electric Vehicle ◽  
Electric Motor ◽  
Fuzzy Logic Controller ◽  
Pulse Width Modulation ◽  
Experimental Studies ◽  
Experimental Tests ◽  
Regenerative Braking ◽  
Electric Motors ◽  
Motor Mode ◽  
Embedded Controller

Regenerative braking is very important for increasing the total range of an electric vehicle. In this study, an embedded controller, including regenerative braking, is designed and implemented for an electric vehicle. Experimental studies are carried out on an electric vehicle driven by two in-wheel electric motors. In-wheel electric motors are preferred in light electric vehicles, since they are both highly efficient and supports regenerative braking. In our embedded controller application, the in-wheel electric motor is operated in both the motor mode and the regenerative braking mode. The in-wheel electric motor control embedded software is developed in the Matlab/Simulink environment. The developed software is embedded in the DSP STM32F407 microcontroller, which has ARM Cortex-M4 core. The in-wheel electric motor is controlled by a fuzzy logic controller in the motor mode, the in-wheel electric motor - in the regenerative braking mode. Different PWM (Pulse Width Modulation) ratios are applied to the wheel electric motor in the regenerative braking mode. The experimental data are recorded in real-time by transferring to a PC on the electric vehicle. The performance of the study is proven with experimental tests.

A New Power Train for Electric Hybrid Vehicle

2013 ◽  
Vol 694-697 ◽  
pp. 1587-1590 ◽  
Author(s):  
Zhen Lin Yang ◽  
Ren Guang Wang ◽  
Lin Tao Zhang ◽  
Chao Yu ◽  
Guang Kui Shi
Keyword(s):  
Mode Selection ◽  
Operation Mode ◽  
Planetary Gear ◽  
Hybrid Vehicle ◽  
Selection Mechanism ◽  
Power Train ◽  
Driving Mode ◽  
Vehicle Load ◽  
Electric Driving ◽  
Power Mode

A new kind of power train was developed for electric hybrid vehicle, which is mainly consisted of engine, two generator/motors, two sets of planetary gear, power mode selection mechanism. The power mode selection mechanism has three positions, it make the power train have three different operation modes which are pure electric driving mode, pure engine driving mode and hybrid driving mode. Different operation mode is corresponding to different vehicle load conditions for economy and dynamics requirements.

CONVERTING THE VEHICLE BY REPLACING THE INTERNAL COMBUSTION ENGINE

2019 ◽  
pp. 29-35
Author(s):  
Oleksandr Gryshchuk ◽  
Volodymyr Hladchenko ◽  
Uriy Overchenko
Keyword(s):  
Internal Combustion Engine ◽  
Electric Vehicle ◽  
Electric Motor ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Environmental Safety ◽  
Environmental Conservation ◽  
Sales Forecasts ◽  
Financial Investments ◽  
Near Future

This article looks at some comparative statistics on the development and use of electric vehicles (hereinafter referred to as EM) as an example of sales and future sales forecasts for EM in countries that focus on environmental conservation. Examples of financial investments already underway and to be made in the near future by the largest automakers in the development and distribution of EM in the world are given. Steps are taken to improve the environmental situation in countries (for example, the prohibition of entry into the city center), the scientific and applied problem of improving the energy efficiency and environmental safety of the operation of wheeled vehicles (hereinafter referred to as the CTE). The basic and more widespread schemes of conversion of the internal combustion engine car (hereinafter -ICE) to the electric motor car (by replacing the gasoline or diesel electric motor), as well as the main requirements that must be observed for the safe use and operation of the electric vehicle. The problem is solved by justifying the feasibility of re-equipment of the KTZ by replacing the internal combustion engine with an electric motor. On the basis of the statistics collected by the State Automobile Transit Research Institute on the number of issued conclusions of scientific and technical expertise regarding the approval of the possibility of conversion of a car with an internal combustion engine (gasoline or diesel) to a car with an electric motor (electric vehicle), the conclusions on the feasibility of such conclusion were made. Keywords: electricvehicles, ecological safety, electricmotor, statistics provided, car, vehicle by replacing.

scholarly journals The Structure and Optimal Gear Tooth Profile Design of Two-Speed Transmission for Electric Vehicles

Energies ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3736
Author(s):  
Jae-Oh Han ◽  
Won-Hyeong Jeong ◽  
Jong-Seok Lee ◽  
Se-Hoon Oh
Keyword(s):  
Electric Vehicle ◽  
Electric Vehicles ◽  
Automobile Industry ◽  
Bending Strength ◽  
Gear Tooth ◽  
Planetary Gear ◽  
Maximum Speed ◽  
Compact Structure ◽  
Simple Method ◽  
Paris Climate Agreement

As environmental regulations have been strengthened worldwide since the Paris Climate Agreement, the automobile industry is shifting its production paradigm to focus on eco-friendly vehicles such as electric vehicles and hydrogen-battery vehicles. Governments are banning fossil fuel vehicles by law and expanding the introduction of green vehicles. The energy efficiency of electric vehicles that use a limited power source called batteries depends on the driving environment. Applying a two-speed transmission to an electric vehicle can optimize average speed and performance efficiency at low speeds, and achieve maximum speed with minimal torque at high speeds. In this study, a two-speed transmission for an electric vehicle has been developed, to be used in a compact electric vehicle. This utilizes a planetary gear of a total of three pairs, made of a single module which was intended to enable two-speed. The ring gear was removed, and the carrier was used in common. When shifting, the energy used for the speed change is small, due to the use of the simple method of fixing the sun gear of each stage. Each gear was designed by calculating bending strength and surface durability, using JGMA standards, to secure stability. The safety factor of the gears used in the transmission is as follows: all gears have been verified for safety with a bending strength of 1.2 or higher and a surface pressure strength of 1.1 or higher. The design validity of the transmission was verified by calculating the gear meshing ratio and the reference efficiency of the gear. The transmission to be developed through the research results of this paper has a simple and compact structure optimized for electric vehicles, and has reduced shift shock. In addition, energy can be used more efficiently, which will help improve fuel economy and increase drive range.

Sign in / Sign up

Export Citation Format

Share Document