In order to improve driving safety and driving comfort, the technologies of replacing traditional rear-view mirrors with electronic rear-view mirrors or camera monitor systems are sorted out, and the requirements of relevant domestic and foreign laws and standards on camera and monitor parameter design are analyzed. The research status of the monitor in terms of size, angle and position design is summarized. Moreover, the results of the actual car-following test and the simulated driving test are analyzed, and the evaluation indicators in the test are compared, including the physiological performance of the driver in the process of completing the driving task. Considering the subjective scores of drivers, the evaluation system under different test conditions is analyzed. This thesis provides feasible evaluation methods for camera monitor system application.

As an important product of road freight transportation informatization, the application of network freight platform is one of the important ways to help the road freight industry achieve carbon reduction. Based on the investigation and analysis of the carbon reduction status of many network freight enterprises in China and abroad, it is concluded that the integration of logistics resources, replacement of new energy vehicles, deployment of carbon emission management system, and enterprise management carbon reduction are important ways to reduce the carbon emission of road freight. Among them, the integration of logistics resources and the replacement of new energy vehicles have great potential to develop Chinese Certified Emission Reduction (CCER) projects. At present, there is no unified calculation method for carbon emission reduction in China’s road freight industry, the development of a set of methodologies applicable to the CCER trading market at this stage can serve as a good support for the development of carbon reduction projects in the network freight platform under the CCER system.

With the energy and environmental problems becoming increasingly prominent, automobile lightweight as an effective energy-saving and emission reduction technology has become an important development trend in the global automotive industry. This paper elaborates the kinds of aluminum alloys commonly applied in automobile manufacturing, and systematically analyses the weldability of Al/Al and Al/steel. This paper summarizes the advanced joining technologies for aluminum alloy body manufacturing, including resistance spot welding, arc welding, laser welding, friction stir welding, flow drill screw driving, self-piercing riveting, clinching and glue joint. The application status, advantages and disadvantages of aluminum alloy joining technologies are summarized, and the future development trend is prospected.

In automobiles, electronic control components can be connected into a local area network through the CAN protocol for information transmission. The in-car entertainment system plays an important role in interacting with users among these electronic components. In order to meet the users’ ecological needs and provide a friendly interface operation experience, the Android system has been introduced into the in-car entertainment system. This study mainly explores the implementation of accessing the CAN network through Android applications using the Model-View-Controller (MVC), Model-View-Presenter (MVP), and Model-View-View Model (MVVM) design patterns, and compares these 3 design patterns to analyze their advantages and disadvantages in accessing the CAN network. Ultimately, it concludes that the MVVM design pattern is more suitable for the application of accessing the CAN network in the In-Vehicle Infotainment system.

As the main load-bearing component of the traction battery assembly, the structural strength of the battery box has a critical impact on the reliability of the traction battery system. This paper analyzes the battery box of a pure electric passenger car and uses finite element analysis method to analyze the modal and structural strength of the battery box. Improvement suggestions are formulated, and bench tests are completed to verify the improvement plan. For the development of battery boxes, through preliminary design optimization and finite element analysis methods, this paper analyzes the modal and structural strength of the battery box care to achieve rapid iteration of product plans, so as to reduce test risks and ensure the structural reliability of traction battery products.

With the establishment of China’s dual carbon goals and the continuous tightening of regulations, commercial vehicles have also embarked on a path of transformation and upgrading. The domestic commercial vehicle market is gradually saturated, the subsidy policies for new energy commercial vehicles continue to decline. In order to study the development trends of new energy commercial vehicles in China, through literature review and investigation research, the development of commercial vehicles in China is summarized as follows: (1) The commercial vehicle market has shifted from incremental development to stock competition stage, (2) Overseas markets have become new growth poles, (3) The development of new energy commercial vehicles is shifting from policy driven to policy market dual driven, (4) In the short term, multiple technological routes will continue to coexist and evolve, (5) Innovative business models will usher in rapid development.

In the study of stability control for intelligent vehicle, the changes of model parameters and external disturbances such as lateral wind and road adhesion coefficient, which may lead to instability and poor robust stability. In order to improve the riding stability of intelligent vehicles under random interference, a stability control strategy based on Active Front Steering（AFS） and Direct Yaw moment Control（DYC） coordinated control is proposed. Firstly, a two-degree-of-freedom dynamic model of the vehicle is established. Secondly, a front wheel active steering controller based on robust adaptive sliding mode control is designed by combining adaptive law and sliding mode control to suppress the disturbance in the vehicle running, which solves the robust control problem of nonlinear systems with time-varying parameters, uncertainty and unknown disturbance. The yaw moment controller based on genetic optimization fuzzy control is used to solve the additional yaw moment to restore the stable running of the vehicle. Based on Simulink and CarSim simulation platform, the stability control method is simulated under step disturbance, sinusoidal disturbance and mixed disturbance. The results show that the coordinated control significantly reduces the additional yaw torque output of the vehicle, which can be well inhibited interference and fully ensure riding stability of the vehicle.

With the increasing development of braiding process and the continuous improvement of automation level, three-dimensional braided carbon fiber composite materials have become ideal candidates for the design and preparation of complex special-shaped components with main bearing capacity in the high-tech field of manufacturing. In order to further explore the application prospects of 3D braided carbon fiber composites in the automotive industry, the paper investigates the effects of structures, temperatures, load modes on the mechanical properties and failure mechanism of 3D braided composites and expounds the current research status and progress of 3D braided composites at home and abroad, which puts forward suggestions for their application development.

In the environment that the passenger car industry is becoming increasingly prosperous, it is crucial for each automobile enterprise to accurately grasp the development direction of the industry and formulate suitable production goals. In this paper, historical sales, macroeconomic indicators and online search keyword data are selected as variables to establish a variety of sales prediction models for the overall passenger car market in order to improve the prediction accuracy of passenger car sales. Through comparative analysis, the Gradient Boosting Decision Tree (GDBT) algorithm model considering the above 3 variables has the best effect and its Mean Absolute Percentage Error (MAPE) is 10.35%. The model obtained in this paper can help automobile enterprises understand the development of market trends, make targeted production planning and provide a new reference model for the research of sales forecast.

The steer-by-wire technology is the key technology for the future development of pure electric vehicles, as the key execution system of the X-by-wire chassis, the mechanical connection is canceled, the steering operation is directly transmitted by electrical signals, the control mode is more flexible, the modular structure can be realized, the coupling and control freedom between the steering system and other subsystems of the chassis are improved. Therefore, the steer-by-wire system is an important part of the drive-by-wire chassis system. In order to provide a useful reference for R&D units and enterprises related to steer-by-wire technology, this paper uses patent analysis method to sort out key technical points in steering strategies, integrated systems and other aspects from the perspective of patent disclosure trend and patent technology composition. This paper also analyzes the development status of steer-by-wire technology of pure electric vehicles from macro and micro perspectives, proposes the key directions for future patent layout in the field of steer-by-wire for pure electric vehicle in China.