寒冬中的一缕温暖 DODGE Caravan 3.0V6

决定去拍照的这一天,恰逢北京冬天的第—场雪,天空也是无比阴暗,行驶在城市拥堵的公路上,到处都是肮脏的车辆,不时从你身边驶过,扬起一阵泥水,心情也是愈发烦闷。索性把车交给同事,沉沉睡去,也不知过了多久,睁开眼睛,我们已身处郊区,曾经多次走过的国道白得刺眼,两旁层峦叠嶂,竟如史诗般宏伟,我摇下车窗,点燃一支香烟,任寒冷的空气割面,仿佛大梦初醒……     

开车族必备食疗养生知识

1、开车的朋友由于要集中精力,睁大眼睛,观察前方情况,故较费眼神,尤其是在夜间开车,更是用眼过度,易耗肝血,中医认为肝开窍于目,目受血则能视,久视则耗伤肝血,故驾车族应多食用动物的肝脏或血,比如猪肝、羊肝、鸡肝、鸭肝、猪血等,以食养方式滋补肝血,以达明目养肝之目的。2、开车消耗体能较少,许多人又缺乏健身锻炼,身体大多偏胖,因此,驾车族应尽量减少油脂摄入,     

千里马何在!

策马扬鞭傲神州,笑看风云度春秋,三千烦恼皆抛下,十万名山任遨游。马达声声,机器轰鸣,一路向前,披荆斩棘,那种无拘无束、迎风驰骋,让心底的自由、激情和冒险彻底释放。骑着摩托车这一现代化战马,飞驰在大江南北,浪迹天涯,天马行空,观大千世界,乐趣实在无穷。马作为交通工具,几千年来帮助人们解决了出行问题,缩短了出行半径,加快了文明交流和融汇,更给多少人带来内心上无限的自由。     

井盖的故事

1960年春天的一天,我们单位几个年轻的考验员,笑传一个消息:我们的刘组长,被李非处长批评了一顿。刘组长是大好人,建国前参加工作,三十多岁,就是爱叨唠,新领的驾驶本,技术不大熟练。李非是公安局交通管理处的处长,从延安过来的,听说上过抗大,当时在北京市的司机队伍里无人不知。因为他经常在司机安全大会上发表演说,不但嗓音洪亮,而且内容贴切,博古论今,风趣幽默,当然主题不     

沙漠舞者——探访中国石油天然气运输公司沙漠运输公司

塔克拉玛干沙漠,位于新疆塔里木盆地中央,沙漠里水源奇缺,植被稀少,自然条件恶劣,鲜有飞禽走兽,难觅人迹。却又有一群人,在塔克拉玛干沙漠的腹地,与流沙肉搏,与寂寞为伍,他们同数百辆车一道组成了一支运输队,     

张天任:中国绿色动力能源的领航者(上)

"曾经,他感知电能的魔力,从此欲罢不能。如今,他呼吁绿色经济,将财富引入循环。历经修练,曾以神奇,驱动两只魔轮,更以好奇,开拓低碳轨迹。疾进的路上,动力为先,或执著,或癫狂,他蓄存所有能量,绽放光芒。"     

打开顶篷,四处游荡

在我挚爱的广州,珠江就在身旁,开始书写有关青岛的回忆,此刻是双重的眷恋。如果像问东京那样,问一句,为何是青岛?为何不能是大连? Volkswagen EOS,BMW 330i Convertible,Honda S2000对于一群从首都高速驾车前往青岛的年轻人来说,坦诚我们是被啤酒勾引去的,好像有点敏感。那我就否认好了,信与不信的自由我赋予你。再说,我们开着3部敞篷车飞驰而去,当然也是去看望大海,沉浸美景,领略风情,吹风晒太阳。如果没有这些美好元素,啤酒,就仅仅、甚至不再完全是啤酒了。     

现场施工管理之我见

一个工程项目从立项、规划、设计、审核到施工,及至竣工验收,资料归档管理,整个流程,环环相扣,任何环节都不能有丝毫闪失,否则其所引起的损失均是难以估量的。其中,作为施工这一至关重要的一环,是一个将设计意图转换为实际的过程,在此过程中,     

无车记

从深圳地王大厦开始,到香港的中环,这一程没有耗费一滴汽油(Jimny停在上海的家里,找了个好车位,歇了10天)。先坐深圳的地铁到罗湖,步行过关,再坐火车,换地铁,七转八换就到了中环。尽管我背一个包,提一个包,坐在地铁里好像《甜蜜蜜》里的黎明,但总算这一路走得环保,而且省钱。     

汽车与角色扮演

某先生姓王,就是"周吴郑王"的那个王。王先生出生卑微,学历低下,其人庸常无奇,平日开家小店,仅以糊口;谁知道最近否极泰来,趁着股市大起大落,一通误打误撞,他竟然顺便发了。财富于人,不仅仅是数目,更多的时候是标志。这票子有了,房子、车子也就接踵而来,按照常理是女子、儿子依次登场,成就一番"五子登科"     

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.