Automobile Power Research Articles

Топливная экономичность силовой установки автомобиля с электромеханической трансмиссией

Топливная экономичность силовой установки автомобиля с электромеханической трансмиссией

Study on Permanent Magnetic Slip Transmission Mechanism

In order to meet the needs of automobile power transmission and the power transmission does not interrupt when shift, a non-contact permanent magnetic slip transmission mechanism was built, and the structure and working principle of the mechanism was introduced. The static magnetic torque was calculated by using equivalent magnetic charge method, a physical model was created to modify the theoretical calculation formula, and the credible calculation formula of static magnetic torque was attained. Selection of slip transmission conditions as the key research condition on the basis of the analysis of mechanism of two kinds of operating mode, the slip transmission torque was smooth-going by changing the shape and dimension of permanent magnet, the torque ∞uctuation in total within 5% was achieved. The mechanism can realize reliable transmission slip and no slip conditions and a new transmission mechanism structure for the car was proved. It can improve vehicle smooth shift efiectively.

Methods to Protect Global Warming

The promotion of growth of plant and promotion of carbon dioxide assimilation are best methods to protect global warming. Plant growth by eating carbon dioxide, nutrient N and nutrient P. Supply of N and P is key point. Elimination process of Nitrogen oxide (NOx) at automobile exhaust gas and power station flue gas should be stopped. Elimination of phosphate, urea and ammonium salt in drainage should be stopped. By the supply of sufficient N and P, enough growth of plant and enough carbon dioxide assimilation are performed. Then increased absorption of carbon dioxide and heat will protect global warming.

The Research and Design on the Electric Vehicles’ Centrifugal Automatic Transmission

Aiming at the deficiencies of the commonly used AMT and DSG structure in the electric vehicles’ transmission, a kind of three-speed automatic transmission structured by the planetary gear trains is designed. It uses the centrifugal components to realize the gear shifting, while using the electromagnetic brake and the motor reversal to realize the reversing. Based on the design concepts proposed, we did some matching calculations on the transmission system of a three-wheel pure electric vehicle, and finally made the optimization design on the driving motor’s selection and transmission parameters. The designed electric vehicle’s centrifugal automatic transmission has the characteristics of simple structure, small size and shifting smoothness, which can not only meet the requirements of the automobile power, but also improve the efficiency of the driving motor.

Matching Study of Hydraulic Torque Converter and Engine Based on Genetic Algorithm

According to the multiple matching principles of hydraulic torque converter and engine, a multi-objective optimization mathematical model is established. Genetic Algorithm is used to optimize the matching mathematical model, because the search process is not easy to fall into local optimum. The matching example of YJSW315 type hydraulic torque converter and WD615.67G3-28 type engine is optimized. The design variables’ optimization results are obtained and the figure of optimization results is shown. The matching evaluation indicators of automobile power performance and economy are compared before and after optimization. We can find out that maximum output of hydraulic torque converter torque, highly effective rotational speed range, highly effective torque range, average power output of full working condition range and efficient working condition range are all increased, at the same time, average fuel consumption rate of full working condition range and efficient working condition range are decreased. In accordance with the optimization results, we can see that GA can be used to optimize the matching of engine and hydraulic torque converter.

Study on Current Sensor Based on Holzer Reaction Principle in Detection of Automobile Power System

This paper involved how to detect over current monitoring of automobile power system and detect the current size of charge and discharge of automobile battery. The detection conclusion compare with the actual load current to determine whether the fault automobile performance at the presence. This paper discusses how to realize the induction sensor based on the principle of holzer. The current sensor in the application system of automobile current supply. Mainly explain the primary / secondary coil turns on the induced current factor in detail and the output form of the induced current.

Optimization of Automotive Powertrain Based on Genetic Algorithm

In order to improve the performance of the cars, an optimization algorithm of transmission parameters that take into account automotive dynamic and fuel economy based on genetic algorithm was presented in the paper. Firstly, the origin underway accelerate time was chose as the dynamic target function, and the 100 kilometers fuel consumption of 15-cycle driving was used to evaluate fuel economy, and the two objectives functions were putted into a comprehensive objective function. Then, the constraints were established using the requirement of automobile power performance and transmission design, and the genetic algorithm was adopted to do the optimization. At last, a simulation experiment was design to confirm the validity and effectiveness of the proposed method.

Research of On-Line Programming Technology Based on Infineon AUDO FUTURE Series Micro-Controller

The Infineon AUDO FUTURE series micro-controller is widely applied in automobile power system, to solve the online programming problem, paper designed online upgrade system for Infineon AUDO FUTURE series MCU based on CAN Bus, which uses IAP technique to realize triggering bootloader without adding any hardware. Since all ECUs in vehicle are connected to CAN Bus which use ISO15765 protocol to communicate with each other, the entire download process paper designed follow the ISO15765 protocol. This system is suitable for any chip of this series and paper test it based on TC1767. The experimental result shows that this system has strong reliability with high efficiency.

Design of 42V Alternator on Automobile

The advantages and development of the 42V automobile power system are summarized and the operation mode is analyzed. The 42V brushless alternator is designed which is the key part of the system. The excitation rotor and armature winding are redesigned to satisfy the 42V system and increase the efficiency.

Research on the Automotive Hybrid Control System Applications

With the rise of international oil prices and the increasingly scarce of oil energy, the fuel consumption of cars has received more and more attention of the community. In recent years, the number of cars has sharply soared, and its resulting resource consumption and environment are more and more problems, the most direct solution is the production of pure electric vehicles or oil electric hybrid cars, due to pure electric vehicles technology is not yet mature, hybrid cars have become the best choice to solve the energy and environmental problems. This paper first expatiates the characteristics of three kinds of hybrid power system, and introduces the working principle and way of working of the hybrid electric vehicle system; the second part establishes the mathematical model of automobile hybrid, to give the expression form of resistance coefficient, air resistance, rolling resistance and acceleration resistance under the hybrid driven; for the three forms of separate control power system, the third uses MATLAB/ADVISOR control software to carry out simulation, to provide a theoretical reference for the design and application of automobile hybrid power control system.

Calculation and Simulation of Automobile Power Performance Based on the MATLAB

With the rapid increase of automobile, as a transportation tool, the automobile transport efficiency is also put forward higher requirements. Transport efficiency of the automobile depends largely on the power performance. Power performance is the most basic and important performance of the automobile. Power performance is good or bad directly affects the effect of automobile driving on the highway. Generally, a power performance calculation and simulation is necessary in the new car development. It is used to guide the design whether meet the requirements of the design index and use. According to the general method of calculation and simulation about automobile power performance, this paper combining with a car carried on the power performance calculation and simulation. It has reference value for studying, researching and developing automobile.

The Design of Comprehensive Performance Test-Bed of Automobile Electric Power Steering System

A kind of comprehensive performance test-bed of automobile electric power steering system was designed. IPC was applied to the main control system. Testing software was developed based on Visual Basic. AC servo system was assembled to respectively simulate input torque and load torque, the manual input torque can also be realized by operating steering wheel. The motion control card MPC08 is used to control the motion of Servo motor. Test data is collected by using multi-function data collection card. The lifting gears were assembled to install input/output shaft servo motor and EPS. Test results show that the test-bed can verify the control strategies and accurately detect the assist characteristic of EPS.

Analysis of the Main Technical Ways of Automobile Energy Saving

ts significant that auto energy-saving and emission reduction to achieve the whole societys energy-saving and emission reduction, to promote the optimization and upgrading of the automobile industry, to create the modern automobile industry which is characterized by structure optimization, rational layout, advanced technology, and friendly environmental, and ultimately realize the transformation from the automobile power to auto giant. This paper firstly analyses the significance of auto energy saving and emission reduction in China, then points out the six main technical way to realize the vehicle energy-saving and emission reduction, and the existing problems in every kind of current techniques, then puts forward the corresponding measures and suggestions.

Design of a Remote Control Vehicle Based Wireless Communication used for Fighting Fire

Intelligent vehicle get the status information of its body by using sensors. After analyzing data, the vehicle gives the decision results to the driver. In addition, the Smart car also has a good ability to adapt to the environment which can be used in exploration, disaster and other special occasions. An intelligent car was designed to fight forest fire. Wireless remote controlled unmanned forest fire vehicle and remote control PC software was designed. The structure matching and motor coordination of drive the smart car's power and motion control system was studied. By test, it was proved it has have a good stability and reliability.

Multi-Objective Optimization of Automobile Powertrain Based on Genetic Algorithm

Simulation model of automobile power train has been built using ADVISOR, on the basis of Genetic Algorithm Tool Box, the paper takes a mini car as example to carry out performance simulation calculation and power train parametric optimization design. The result show that automobile power performance and fuel economy and emission performance have been greatly improved

Assessment of impact of reactive units to oscillations of an automobile power plant

+7 (495) 223-05-23, eae@list.ru The article summarizes the estimated model of a vehicle powerplant. This model takes into account the oscillations of the power unit along and around the three axes and considers impact of the transmission to the whole picture of the oscillations of the power unit. The mathematical description of the computational model of the power unit is presented on the example of a small class car.

Study of oscillations of the automobile power plant

The article describes an estimated model of a vehicle powerplant. This model takes into account the fluctuations of the power unit along and around the three axes and considers the impact of the transmission to the whole picture of the oscillations of the power unit. The mathematical description of the computational model of the power unit is presented on the example of a small class car.

Electric Automobile Ni-MH Battery Investigation in Diverse Situations

The electronic differential system ensures the robust control of the vehicle comportment on the road. This paper focuses Ni-MH Battery controlled by Buck Boost DC-DC converter power supply for EV. Sliding mode control based on space vector modulation (SVM-SMC) is proposed to achieve the tow rear driving wheel control. The performances of the proposed strategy controller give a satisfactory simulation results. The proposed control law increases the utility EV autonomous under several speed variations. Moreover, the future industrial's vehicle must take into considerations the battery material choice into design steps. The battery material model choice is a crucial item, and thanks to an increasing emphasis on vehicle range and performance, the Ni-MH battery could become a viable candidate that's our proposal battery model in the present work, in this way the present paper show a novel strategy of electric automobile (EA) power electronics studies when the current battery take into account the impact of the sliding mode control based onspace vector machine technique in the several speed variations using the primitive battery SOC of 60% state.

The Simulation for Automobile Power Performance and Fuel Economy

The power performance and the fuel economy are both the important indexes of the automobile. To designing a certain vehicle, when the total weight, distribution of the load and the tyres are specified, in traditional ways, it needs to do a lot of the dynamic calculation work and numerous experiments to get the parameters of proper engine and power train. This paper, Based on mathematical model, the simulation for automobile power performance and economy is designed. The calculation on actual vehicle is taken with this software and calculated values are in good agreement with the practical data. The analysis of influence of some chief factors on automobile power performance and fuel economy is carried out, which can provide the reference guide for automobile design.

Modal Analysis of Electronic Power Steering Based on Finite Element Method

With the application of the software Pro / Engineer, the 3-D model of automobile Electric Power steering system is built. The pre-processing and post-processing of the model are carried in I-DEAS software, while PERMAS solver is used to calculate. The structure design and dynamic characteristic optimization of the model are researched, and on the basis of natural frequencies analysis, several design improvement schemes are brought forward. The optimum scheme is generated through comparison.