探析汽车发动机维护与保养

随着人们的生活水平的不断提高,汽车的种类与数量也在不断的增加,汽车的应用给人们的生活带来了很多的便利,使远距离的出行变的更加轻松。不同用途的汽车给人们带来的帮助是不一样的,例如农机的使用提高了农作效率,清扫车的使用减轻了环卫工人的工作量,清洁效果也更好。汽车中最重要的部件就是发动机,发动机一旦出现故障,会加速其他零件的磨损程度,降低汽车的使用寿命。本文主要介绍了汽车发动机容易出现的故障问题并提出了相应的解决措施,讲述了发动机的维护与保养措施,希望对相关的工作人员有所帮助。     

客车柴油发动机冷却系统的维护与保养

简述客车柴油发动机冷却系统维护与保养的重要性和方法。     

汽车底盘维护与保养教学实施报告

党的二十大报告指出要建设交通强国,就要求职业学校培养出更多的实用型人才。本文主要针对快修连锁店维修人员岗位要求,结合培养方案,以汽车底盘维护保养为例,对教学实施报告进行详细的阐述。     

摩托车车架的维护与保养

由于摩托车车架的结构随车型、材质和设计的不同而不同,因此,车架维护保养方式也不尽相同。下而介绍几种常见车架的维护与保养方法。 1 踏板车车架老式的铁壳踏板车,采用大型冲压件车身替代车架受力,车身和车架合二为一,见图1。这种以车     

试论汽车轮胎的保养与维护

汽车轮胎对行驶安全性起着十分重要的作用。文中主要介绍了汽车轮胎保养与维护的前提,研究和论述了汽车轮胎保养的手段、汽车轮胎的正确维护方法及维修技巧。     

混合动力电动汽车的使用与维护

针对混合动力汽车的结构特点,提出正确使用与维护混合动力电动汽车的内容和方法,以确保其各项性能良好发挥.     

HY9.5T鼓式制动前桥维护与保养

前桥是商用车的重要总成,也是保安件,其能否安全可靠高效的运行不仅关系到整车的故障率、出勤率、投资回报率、更关系到车主的安全。对前桥进行科学有效的维护与保养是重要保障条件。本文以HY9.5T鼓式制动前桥为例,简述了前桥维修应具备的条件与手段、装拆要求、保养要求、维修与清洁方法等。     

蓄电池使用保养与维护综述

综述电池的使用保养及维护的相关常识,为维护人员提供参考,以确保蓄电池使用安全和提高蓄电池的使用寿命。     

新型纯电动城市客车抢修车的设计

介绍了纯电动城市客车抢修车的功能要求、总体布局、故障电池更换接驳方案并介绍了实现抢修车功能接驳小车、提升装置、车厢三个主要装置,通过功能装置的试制、试验对接驳小车、提升装置进行了完善。该车经交付城市客车商业化运营单位使用得到了用户的充分肯定。     

信息技术在汽车维修中的应用分析

随着信息网络技术的快速发展,汽车维修行业也逐步埋入信息化时代.现代化技术的大量应用,让汽车不再是传统单一的机械结构,众多复杂的系统与构件也让很多传统维修手段不再适用,如何针对性开发更为高效的汽车维修方案,提高汽车维修效率与质量,已经成为众多行业工作者的关注重点.信息技术与汽车维修行业的结合,让汽车维修技术的发展更为迅速...     

燃料电池在中国的发展及其在电动车辆上的应用

综述了燃料电池在中国的发展现状。指出可以用于电动车辆动力源的燃料电池种类,包括碱性燃料电池、磷酸燃料电池、固体氧化物燃料电池和质子交换膜燃料电池,中国近年来燃料电池发动机的研发则主要集中在质子交换膜燃料电池上。质子交换膜燃料电池在汽车上的规模应用有助于降低燃料消耗,减少大气污染。燃料电池技术应用于电动车辆的过程中还需要解决一系列问题,这些问题涉及燃料的制备、储存和分配以及燃料电池发动机的小型化、燃料电池汽车整车的重新设计、成本的降低等。笔者对这些问题进行了初步的分析。     

Design of safety-oriented control allocation strategies for overactuated electric vehicles

The new vehicle platforms for electric vehicles (EVs) that are becoming available are characterised by actuator redundancy, which makes it possible to jointly optimise different aspects of the vehicle motion. To do this, high-level control objectives are first specified and solved with appropriate control strategies. Then, the resulting virtual control action must be translated into actual actuator commands by a control allocation layer that takes care of computing the forces to be applied at the wheels. This step, in general, is quite demanding as far as computational complexity is considered. In this work, a safety-oriented approach to this problem is proposed. Specifically, a four-wheel steer EV with four in-wheel motors is considered, and the high-level motion controller is designed within a sliding mode framework with conditional integrators. For distributing the forces among the tyres, two control allocation approaches are investigated. The first, based on the extension of the cascading generalised inverse method, is computationally efficient but shows some limitations in dealing with unfeasible force values. To solve the problem, a second allocation algorithm is proposed, which relies on the linearisation of the tyre–road friction constraints. Extensive tests, carried out in the CarSim simulation environment, demonstrate the effectiveness of the proposed approach.     

某新型航空地面电源车的使用与维护体会

航空地面电源车主要用于飞机地面启动和通电检查等场合。介绍了我部新装备的某新型航空地面电源车的特性,对使用过程中曾出现的故障进行了分析,结合电源车的特点总结出了维护建议。     

A modified integral sliding mode control to lateral stabilisation of 4-wheel independent drive electric vehicles

This paper presents a novel sliding mode controller (SMC) and its application in the lateral stability control of a 4-wheel independent drive electric vehicle. The structure of the SMC is modified and online-tuned to ensure vehicle system stability, and to track the desired vehicle motion references when an in-wheel motor fault happens. The proposed controller is faster, more accurate, more robust, and with smaller chattering than common SMCs chatter. The effectiveness of the introduced approach is investigated through conducted simulations in the CARSIM and MATLAB software environments.     

新能源汽车的发展现状与前景的研究

发展节能与新能源汽车是减少汽车燃料消耗量,缓解燃油供求矛盾,促进汽车产业技术进步和优化升级的重要举措。新能源汽车的发展是大势所趋,而液化天然气(LNG)汽车、混合动力汽车(HEV)和纯电动汽车(PEV)必将是新能源汽车里最耀眼的三颗明星。本文主要介绍了这三种新能源汽车的发展现状并对其发展前景进行了研究。     

深入分析电子诊断在现代化汽车维修技术中的应用

为更好的提升汽车维修的成效,压缩维修周期,为消费者提供更为高效的维修服务。汽车维修人员将电子诊断作为维修工作升级重点,对现有的维修手段、策略做出调整,并取得了较好的成效。文章从实际角度出发,认真梳理汽车电子诊断框架下汽车维修的方式方法,旨在为积极推进汽车维修方法的创新,发挥电子诊断在汽车设备故障诊断、维修方面的积极作用。     

A control strategy for parallel hybrid electric vehicles based on extremum seeking

An energy management control strategy for a parallel hybrid electric vehicle based on the extremum-seeking method for splitting torque between the internal combustion engine and electric motor is proposed in this paper. The control strategy has two levels of operation: the upper and lower levels. The upper level decision-making controller chooses the vehicle operation mode such as the simultaneous use of the internal combustion engine and electric motor, use of only the electric motor, use of only the internal combustion engine, or regenerative braking. In the simultaneous use of the internal combustion engine and electric motor, the optimum energy distribution between these two sources of energy is determined via the extremum-seeking algorithm that searches for maximum drivetrain efficiency. A dynamic programming solution is also obtained and used to form a benchmark for performance evaluation of the proposed method based on extremum seeking. Detailed simulations using a realistic model are presented to illustrate the effectiveness of the methodology.