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An orthogonal experimental scheme is designed for analyzing the powertrain system based on GT-drive. What extent of engine, gear-box and final drive influence on dynamic and economic performance of vehicle is presented respectively; hence, we can get An optimal matching option is get by comparing the results under different schemes. The effectiveness of this method is proven by real experiment.
A transient model of off-road vehicle powertrain has been established according to the basic laws of thermodynamics and heat transfer. With the utilization of distributed simulation system based on high level architecture (HLA), the transient simulation of powertrain has been executed. A cycle experiment on a off-road vehicle has been designed and conducted, and the models have been verified by the...
In order to improve the performance of the car, the paper mainly introduces the use of fuzzy algorithm for the best match of automotive power train parameters, The author mainly explains the optimized theory and a computer simulation program is developed. Moreover, the author discusses the problems occurring in the object and gives the methods to solve them. The result of simulation is analysed.
To improve the performance of the power split automatic transmission (PSAT), the power split automatic transmission (PSAT) for mini-car is researched. Several projects on stepless speed regulation and power split are analyzed. And the fully electronic regulation power split continuously variable transmission is the final project presented in this paper. The simulation results indicate that the fully...
Control of Clutch is important on the development of Automated Mechanical Transmission (AMT). The course of clutch engaged is studied to solve the problem of clutch control. Mathematical model of Clutch work is constructed. The friction work and the jerk degree of clutch are studied. And a simulation software is developed, which can calculate the friction work and the jerk degree. The characteristic...
The development of Automated Mechanical Transmission (AMT) can lightening drivers' labor intensity, improving vehicle power and economic performance. Simulation technology can accomplish tests rapidly, shorten developing time and save study expense. A Hardware In the Loop Simulation (HILS) system can be developed to debug, examine and evaluate the performance of Automated Mechanical Transmission Electronic...
The engine brake characters and its influence factors are introduced, and the experiment of engine brake performance is expounded. The necessity of control continuously variable transmission (CVT) ratio during engine braking is discussed. When engine braking, the engine brake torque based on object velocity is estimated. With the characteristics curve of the engine brake torque and engine speed-brake...
This article builds up AMT clutch electrical actuator model by using SimulationX (modeling and simulation software), and focuses on the research of back-EMF coefficient Ke and torque coefficient Kt of DC permanent magnet motor, the two parameters are established through motor performance test data, so that motor model simulation results are basically identical with motor test results. Finally, in...
Recent trends shows that hydrogen powered fuel cell vehicles (FCVs) are gaining universal attention, because of the need for more fuel-efficient vehicles. Advancement in fuel-cell technology has ignited interest in all-electric propulsion systems. Regardless of some drawbacks in terms of number of electrical storage components being used and relatively larger capacity of on-board energy storage required,...
The dual motor powertrain (DMP) configuration is composed of gasoline direct injection (GDI) engine, two motors(one motor connects with input shaft of transmission, namely I-motor, another motor connects with output shaft of transmission, namely II-motor), automatic mechanical transmission (AMT), battery package and hybrid control system. The DMP hybrid system has the functions of engine start/stop...
In this paper, based on a battery pure electric city bus, principle researches have been offered on the parameters matching of the power-train and main components. The vehicle system was designed integrated, and then simulation platform was developed and established. The dynamic and economy performance can be predicted based on the above work, results show that the designed pure electric city bus...
According to the design requirements, the powertrain dynamic simulation model of an integrated starter/generator (ISG) hybrid electric vehicle (HEV) was established using Simulink. The parallel electric assist control strategy (PEACS) was researched and designed in this paper. The analysis of dynamics performance and fuel economy of the model was carried out under the FTP drive cycle, which can provide...
To accomplish the demand of minimum fuel consumption and good power performance for continuously variable transmission (CVT) car. Aiming at the whole vehicle model including the engine, the clutch and the CVT, the dynamics mathematical model of CVT system is established according to different stages of clutch engaging, that the dynamic integrated simulation model is developed. A parameter self-adjusting...
This paper discusses a simulation and modeling package developed at Wuhan University of Technology, HEV Simulator (HEVSIM). HEVSIM was written in the Matlab/Simulink graphical simulation language and is portable to most computer platforms. First, comparisons are made for three different hybrid electric topologies according to their power assembly, power-train, control strategies and drive cycles....
Because of lower fuel consumption and emissions, especially unlimited drive mileage, hybrid electric vehicle (HEV) has long term potential for future main stream vehicle. Based on conventional vehicle CHERY A5, this paper analyzes the framework of powertrain and control strategy of the parallel hybrid electric vehicle. A method of powertrain parameters matching is presented. On the basis of engineering...
The control strategy of AMT (automated mechanical transmission) is one of the most popular and heated-discussed problems in the research of automobile transmission. To realize the reasonable control on a vehicle, it is significant to meet the need of dynamics and economy, but it is more important to work out intelligence gearshift and control strategy accord with driverpsilas operating intentions...
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