汽车多线圈点火系统的使用与维修

无分电器点火系统（DIS）的使用超过20年了,最近几年已趋向于应用多线圈点火系统。例如,点火线圈在配加在火花塞上的多线圈点火系统（COP）,每一个缸配一个点火线圈的（CPC）点火系统和点火线圈加装在靠近火花塞（CNP）点火系统,都属于多线圈点火系统。     

浅谈摩托车点火线圈的结构原理与维修

磁电机CDI点火系统中点火线圈的作用是:将CDI储能电容放电时输出的低压电输入点火线圈一次侧线圈,经点火线圈电磁感应后,在线圈二次侧产生火花塞点火所需高压电的高压电器.     

点火线圈的结构与故障检修

点火线圈又称高压线圈、高压包,实际上它是一个电源增压器。在CDI点火系统中,点火线圈将CDI电容放电输出低压电,经初级线圈、次级线圈电磁感应,在次级线圈上感应产生火花塞放电点火所需高压电能。点火线圈的结构。点火线圈主要由初级线圈绕组、次级绕组、铁芯等组成。按结构和外形不同,分为罐式、胶模封装     

1997款风度A32挂档熄火

1997款风度A32(2.0)因发动机怠速抖动,加速无力进厂维修。经认真检查后,判断故障原因为2缸点火线圈损坏。该车采用无分电器各缸单独点火方式点火,共有6个点火线圈,把工作不良的2缸的点火线圈与其他工作正常的点火线圈对调,毛病也随点火线圈而转移。更换一只新的点火     

摩托车点火线圈的几种简易测量方法

点火线圈将车用蓄电池中的直流低电压转换成高电压，并提供给发动机使气缸点火。在摩托车电气电路中，点火系统的点火线圈故障率较高，容易产生点火线圈内部短路、绕组问相互击穿、高低压线圈间断路等故障。     

点火线圈配电发动机失火故障的诊断

简要介绍点火线圈配电点火系的组成和配电原理，详细分析点火线圈配电点火系引起的发动机失火故障的检查方法，指出检修点火线圈配电点火系零部件应注意的问题。     

东风EQ140汽车点火线圈的换用

东风EQ140汽车大部份选用DQ125型点火线圈,其附加电阻不附带在点火线圈上,采用附加电阻线,阻值1.7欧,从点火开关→点火线圈“ ”接线柱,导线外层绝缘为白色。有部份汽车选用DQ130点火线圈,该线圈带有附加电阻,阻值1.4欧。当选用DQ     

摩托车电气故障检修窍门（3）

20、磁电机CDI充电点火线圈损坏修理窍门 国产125～250mL四冲程摩托车，点火方式为磁电机CDI点火，照明系统采用全直流供电或交直流混合供电。若CDI充电点火线圈散热不良、CDI点火器电子元件短路，会引发充电点火线圈发热、线圈绝缘老化、性能下降、线圈匝间短路等故障。     

奇瑞A3轿车点火线圈故障诊断

故障现象 1辆奇瑞A3轿车不能起动,起动机转动正常,发动机明显无着火迹象。 故障原因 点火线圈损坏,火花塞工作不正常,发动机控制单元损坏,点火线圈的搭铁线不能正常搭铁或短路、断路,点火线圈无火线,点火线圈垫铁不良。     

浅谈SR160型摩托车电气系统的结构与故障分析(2)

点火系统的结构与故障的检修SR150摩托车电气系统点火电路分解图,如图6所示。点火系统主要由CDI、点火线圈、火花塞、点火开关、熄火开关、磁电机充电点火线圈以及触发线圈等电器元件组成。从图中可以看出, SR150摩托     

大型客车空调壳与顶蒙皮干涉问题的分析及解决

文章针对大型客车上的空调壳(包括蒸发器和冷凝器)与顶蒙皮存在干涉问题,进行了原因分析及排查,对其安装支架焊接过程、空调侧边轨(固定支座)的制做精度、空调壳下边缘出厂时的精度检验、整个空调安装过程、空调与顶蒙皮之间的弹性件尺寸及安装完工后的检测方式进行了优化和改进,经过一系列的措施实施,验证结果表明,能较好地解决客车空调壳与顶蒙皮存在的干涉问题,避免了客车在市场上因磨穿顶蒙皮出现的漏雨质量问题。     

A path-following driver–vehicle model with neuromuscular dynamics,including measured and simulated responses to a step in steering angle overlay

An existing driver–vehicle model with neuromuscular dynamics is improved in the areas of cognitive delay, intrinsic muscle dynamics and alpha–gamma co-activation. The model is used to investigate the influence of steering torque feedback and neuromuscular dynamics on the vehicle response to lateral force disturbances. When steering torque feedback is present, it is found that the longitudinal position of the lateral disturbance has a significant influence on whether the driver’s reflex response reinforces or attenuates the effect of the disturbance. The response to angle and torque overlay inputs to the steering system is also investigated. The presence of the steering torque feedback reduced the disturbing effect of torque overlay and angle overlay inputs. Reflex action reduced the disturbing effect of a torque overlay input, but increased the disturbing effect of an angle overlay input. Experiments on a driving simulator showed that measured handwheel angle response to an angle overlay input was consistent with the response predicted by the model with reflex action. However, there was significant intra- and inter-subject variability. The results highlight the significance of a driver’s neuromuscular dynamics in determining the vehicle response to disturbances.     

预应力曲线箱梁和异形箱梁的研究

近年来 ,国内外学者对曲线箱梁和异形箱梁的静力分析理论和计算方法作过大量的研究 ,但这些理论和方法在某种程度上都存在着一定的局限性 ,特别是在实际设计工作中 ,运用起来不能得心应手。为此本文在综合前人已取得经验下 ,针对桥梁结构设计中分析曲线箱梁、异形箱梁 ,经常遇到的难题进行了研究 ,建立一个较为完善的理论和方法 ,编制了等参元空间分析程序。在实际工程中进行实桥试验 ,验证了本文理论和方法的正确性。本文的研究工作更准确描述了箱梁的荷载响应 ,为设计人员提供直观的设计依据。对曲线箱梁和异形箱梁受力特性有了更一步的理解 ,并提出了新的见解     

Development of quantitative measuring technique to find critical flow conditions for preventing soot deposit accumulated in the diesel exhaust system using main muffler composed of three chambers

If a vehicle that meets emission regulations operates sufficiently for a long time under low speed and low load conditions, soot contained in the exhaust gas is accumulated on the inner surface of the exhaust system. This soot deposition problem occurs frequently in all diesel cars. However, when a vehicle is placed under the conditions of sudden start and sudden acceleration after city mode driving for a long time, the deposited soot is abruptly blown up with the soot produced during fuel combustion. In the present study, the main cause of the abrupt outburst of deposited soot is investigated to overcome this adverse phenomenon. First, we developed a method to quantify the amount of the exhausted soot particles (or the accumulated soot particles) by measuring the opacity that represents the contamination level of the exhaust gas due to soot particles. Using this measuring scheme for deposited soot, we found the critical conditions for engine speeds and load conditions at which soot particles are emitted into the air without accumulation in the exhaust system using main muffler composed of three chambers. In order to meet these critical conditions and thus to drastically reduce soot accumulation, the exhaust system using the main muffler applied in this study must be designed to ensure that the flow velocity of the exhaust gas is higher than 62 m/s when the back pressure at the exit of the turbocharger is under 0.08 bars.     

超薄磨耗层沥青混合料的应用研究

该文从研究超薄磨耗层的级配的选择入手,简单分析了超薄磨耗层的结构特点和强度形成机理,给出了几种国内外常用的超薄磨耗层级配范围,并提出了将SAC-10做为其研究的设计级配。在研究超薄磨耗层沥青混合料配合比设计的基础上,通过对SAC-10沥青混合料的马歇尔试验,确定了该沥青混合料的矿料级配和最佳沥青含量。最后采用车辙试验、浸水马歇尔和冻融劈裂试验及小梁弯曲试验等一系列试验,检测超薄磨耗层沥青混合料的各项路用性能,为在实际工程中的应用提供理论依据。     

汶川地震百花大桥震害调查分析

介绍汶川大地震的地震作用特征,通过实地调查,对在汶川大地震中遭到严重损坏的百花大桥进行详细的研究.主要研究第5联整体倒塌过程以及下部结构和上部结构的主要损坏特征,对震害的成因进行分析,并对连续梁桥的震害进行总结.     

农村公路建养要以质量保证为前提

农村公路在建设中和投入使用后,要承受车辆荷载、自然因素的影响。为了充分保证使用性能,必须在建设中和建成后确保其自身的质量,以更好地服务于广大群众。该文对农村公路建养的管理措施及有关注意事项进行了阐述,可供专业人员参考。     

基于DDS技术的发动机爆震信号仿真研究

基于直接数字频率合成(DDS)技术,通过设计相应的硬件电路来模拟发动机的爆震信号,在发动机平均值模型的基础上添加改进的双区燃烧模型,用以计算分析缸内燃烧过程,进而预测、判断爆震,并以爆震等级强弱等信息作为模型的输出量,最终驱动硬件电路产生信号。对信号的发生及处理过程作了针对性的研究。试验结果表明,模拟信号的幅值、频率等参数均可调,实时性满足系统的要求。     

轿车油箱锁紧盖失效原因分析

某汽车公司2001年底投放市场的轿车,在我国海南使用中有个别车的油箱锁紧盖回油管座根部出现裂纹,存在燃油渗漏故障。针对该车的相关零部件(油箱、油管及油箱锁紧盖)进行了测试,结合车辆具体结构和海南的使用条件,通过分析得出了油箱锁紧盖的失效原因并提出了改进方案。通过对改进后的油箱锁紧盖进行的试验测试,证明了对该油箱锁紧盖失效原因的分析是正确的,改进方案可行。     

Scavenging a sub-chamber type CNG fueled engine

The sub-chamber type gasoline engine was suggested to be a type of clean engine, but the presence of residual gas in the sub-chamber was a serious fault. In this experimental study, the CNG direct injection method was applied to scavenge residual gas from the sub-chamber. The CVC (constant volume chamber) is divided into the sub-chamber and main-chamber and used as the main experimental apparatus. Because each combustion chamber of the CVC has an injector, the injector can be used freely, at the same time or individually. Therefore, the scavenging efficiency can be improved by changing injection times for the sub-chamber. The experimental results demonstrated that when all the fuel was injected into the sub-chamber, the combustion duration was shortened by 30% compared to that of injection into the main-chamber. Although residual gas was observed in the CVC, when the frequency of injections into the sub-chamber increased, good combustion characteristics were obtained.