本文分析了高海拔地域对内燃机功率的影响,明确了研究高海拔地域内燃机功率补偿技术的重要意义.根据目前内燃机在高海拔地域功率下降的现象,分析了内燃机功率下降的原因,总结了对高海拔地域内燃机进行功率补偿的策略.

Affected by the plateau environment, the combustion deterioration of diesel engine leads to power reduction, increased fuel consumption and more harmful emissions. The use of exhaust gas turbocharging can solve the problems to a certain extent, but there are also shortcomings such as the lag of turbo response, overspeed, surge, and the reduction of boost efficiency with the increase of altitude. To improve its adaptability to the plateau environment, the method of adding one more stage of electric booster was studied. Using GT-SUITE software, the numerical simulation models of a certain type of exhaust gas turbocharged diesel engine for power generation and an electric combined supercharging were established. The electric combined supercharging on the high-altitude performance of diesel engine for generation was analyzed. The results show that the compound electric supercharging can not only restore the output power and torque of the diesel engine effectively, but also reduce the fuel consumption rate. At an altitude of 5 000 m, the output power and torque are increased by 5.7% and 9.2% respectively, and the fuel consumption rate has been reduced by 8.1% at the altitude of 4 500 m. At the same time, it also has a certain effect on reducing the emissions of CO and HC compounds in the exhaust gas.

This paper analyzed the harm of three-phase unbalanced power supply of vehicle mobile power supply to generator set electrical equipment and communication system, and the cause of the harm is analyzed. The three-phase balance control box is designed by adopting the design concept of “three input one output” and “rectifier inverter”. Through the comparison of the experimental data, the feasibility of the three-phase balance control box for the three-phase balance adjustment of the external power supply of the vehicle mobile power supply is verified, so as to achieves the optimization of the three-phase balance power supply and improves the reliability and safety of the external power supply of the vehicle mobile power supply.

With the rapid development of internal combustion engine technology and the widespread popularity of diesel locomotives, the exhaust pollution of internal combustion engines has become a factor that cannot be ignored in air pollution. Particulate matter in diesel engine exhaust is an important culprit in diesel engine exhaust pollution, the harm of which has been widely recognized. This paper introduces the hazards of particulate matter in diesel exhaust, and summarizes DPF for particulate emissions and the regeneration technology of DPF.

高原环境下柴油发电机组要解决低温冷起动和恢复输出功率两大难题.低温冷起动的关键技术在于预热保温技术、低温蓄电池、超级电容并联蓄电池技术,功率恢复的关键技术在于增压技术、燃烧优化技术和热平衡技术.

本文介绍了内燃机新技术的发展路线,分析了军事内燃电源应用中所产生的问题,明确了研究内燃电源高寒地域应急启动技术的重要意义.根据目前内燃电源高寒地域应急启动技术发展遇到的问题,分析了内燃电源高寒地域启动困难的原因,总结了改善内燃电源高寒地域启动困难的策略.

With the gradual depletion of fossil fuels and the increasingly severe form of environmental protection, data analysis shows that the new energy vehicle industry has become the future industry competing for development all over the world. China has also established the development strategy and goal of the new energy vehicle in the future. This paper analyzes the technical route and application data of new energy vehicle and puts forward the development strategy of new energy vehicle industry in view of the current situation and existing problems of the development of new energy vehicle in China. It is necessary to strengthen the formulation of national standards for energy vehicle industry, pay attention to core technology breakthroughs and parts research, improve infrastructure construction, constantly improve the business promotion mode, so as to promote the rapid development of new energy vehicle industry in China.

Power system is a complex nonlinear dynamic system composed of many units, such as power generation equipment, transformer, transmission and distribution lines and electrical equipment. It is difficult to establish an accurate mathematical model and obtain satisfactory dynamic performance with traditional control theory and method. Liquid level control system is a typical non-linear, time-varying and uncertain control object. Based on conventional fuzzy algorithm, the steady-state control of liquid level control system can be realized, but there are also some problems such as poor dynamic performance and long steady-state response time. In terms of these problems, an intelligent control system based on asymmetric fuzzy algorithm is presented. Simulation results show that excellent dynamic performance can be obtained for the liquid control system with the proposed asymmetric fuzzy, and the steady-state convergence time is shorter than the conventional fuzzy control system.

With the development of internal combustion engine technology, internal combustion engine has been widely used in automobile, ship, electric power and other industries due to its advantages of high power density, high heat utilization rate and good economic performance. This paper analysed the advantages, the development process and current situation of internal combustion engine technology, while the development trend of internal combustion engine technology is prospected. Internal combustion engine technology will get greater development in the future.

工程制图以培养学生绘图、看图能力为核心目标,而空间思维能力是掌握绘图、看图基本技能的基础.通过工程制图训练出在生活和社会实践中养成空间思维习惯,利用多媒体资源库和形象化教学培养空间思维能力,通过练习训练和软件实体建模强化空间思维能力,为今后从事专业技术工作奠定良好的基础.

FSMC is an interface technology used when STM32 processor needs to expand its functions in some applications. This paper takes the FSMC bus of stm32f767 as an example, introduces the method that STM32 series chips connect FPGA through FSMC bus, opens a section of FIFO space in FPGA, and connects the FIFO memory to the FSMC bus of STM32. FIFO is used as a memory of STM32. The hardware circuit design and software interface design are given. And the data transmission of heterogeneous dual core is simulated and verified in the experiment, which has certain reference significance to realize the data transmission of heterogeneous dual core processor through FSMC bus.