桑塔纳2000GSi车用发动机故障排除三例

针对搭载4缸电喷发动机的桑塔纳2000GSI型轿车，介绍了采用查30号端子无电原因、固定P3插头、更换转速传感器G28等措施排除其在停车一段时间后无法起动的故障；采用更换正时带排除其仅行驶4600km后在高速公路上不能加速的故障；采用更换燃油泵接地线连接器的措施排除其无规律熄火的故障。     

摩托车发动机水冷化初探

摩托车发动机水冷化需要进行整个系统的设计、分析及计算。由于摩托车发动机本身结构紧凑、体积小,再设计布置水道有一定的难度,最好进行三维实体造型设计。为了在设计时尽量减少投入、简化结构和降低制造成本,在进行水冷化的过程中应注意产品的继承性和通用性。     

力之星摩托车纳米金陶发动机

纳米金陶发动机采用全铝合金纳米陶瓷技术缸体、微弧氧化陶瓷技术活塞及TiN陶瓷活塞环。该系列发动机耐磨、减小摩擦、导热好、提升功率、节油并有利于环境保护。     

发动机点火波形与故障分析

点火波形是发动机点火系工作时点火线圈初级、次级电流及电压随时间（或曲轴转角）变化的关系在专用示波器上的显示，它实时地反映了点火系的工作状况。因此，点火系的故障也必然反映在点火波形上。分析了点火波形的形成、影响点火波形的因素     

发动机转速的应用研究

随着就车检测诊断技术的发展和发动机瞬时转速检测技术的提高，对发动机转速的检测已经成为检测发动机性能，诊断发动机故障的手段。在大量试验和分析的基础上，提出了应用发动机转速作为主要判据的设想。     

发动机试验数据管理系统的开发应用

介绍了发动机试验数据库管理系统的工作原理、结构、功能，发动机试验数据的处理、绘图及试验报告的生成；对系统开发及开发过程中的若干难点进行论述。实践已验证了该系统的正确性、实用性和高效性。     

发动机冷却风扇温控液力驱动系统

本文介绍了发动机冷却风扇温控系统，这种新型的控制系统具有自动测量，微机控制，液压驱动，无级变速等特点，可以使发动机在最佳温度下工作，文中详细介绍了系统构成，测控元件选择及软件设计。     

电控发动机工况实时模拟系统的研制

本文介绍了电控发动机工况实时模拟系统的研制，试验与实际应用证明该系统具有工作稳定，运用可靠等特点，在发动机电控系统开发工作中，该系统是十分有用的工具。     

汽车发动机气道内的流动模拟计算

本文介绍了汽车发动机气道内三维定常可压缩流动数值模拟的模型、算法及算例。为达到能定量分析并应用于实际设计的目的,提出了一种新的计算网格划分法,并开发了计算软件,对提高计算精度、加速收敛等关键问题进行了探索。     

Hardware-in-the-loop testbed for evaluating connected vehicle applications

Connected vehicle environment provides the groundwork of future road transportation. Researches in this area are gaining a lot of attention to improve not only traffic mobility and safety, but also vehicles’ fuel consumption and emissions. Energy optimization methods that combine traffic information are proposed, but actual testing in the field proves to be rather challenging largely due to safety and technical issues. In light of this, a Hardware-in-the-Loop-System (HiLS) testbed to evaluate the performance of connected vehicle applications is proposed. A laboratory powertrain research platform, which consists of a real engine, an engine-loading device (hydrostatic dynamometer) and a virtual powertrain model to represent a vehicle, is connected remotely to a microscopic traffic simulator (VISSIM). Vehicle dynamics and road conditions of a target vehicle in the VISSIM simulation are transmitted to the powertrain research platform through the internet, where the power demand can then be calculated. The engine then operates through an engine optimization procedure to minimize fuel consumption, while the dynamometer tracks the desired engine load based on the target vehicle information. Test results show fast data transfer at every 200 ms and good tracking of the optimized engine operating points and the desired vehicle speed. Actual fuel and emissions measurements, which otherwise could not be calculated precisely by fuel and emission maps in simulations, are achieved by the testbed. In addition, VISSIM simulation can be implemented remotely while connected to the powertrain research platform through the internet, allowing easy access to the laboratory setup.