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陈庚周莉博刘宗阁段明双 《汽车电器》2017,(6):1-4
纯电动汽车搭载有高压动力电池和低压辅助铅酸蓄电池,高压动力电池作为动力系统的驱动电源,而铅酸蓄电池作为低压部件的工作及信号转换、传输电源。本文讨论的是利用DC/DC变换器及整车控制器VCU,检测并自动间歇性补充铅酸蓄电池电量,可基本解决因暗电流过大引起的车辆无法起动问题。 相似文献
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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…… 相似文献
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在发达国家,摩托车早已成为休闲娱乐的道具,是生活方式的标榜,是个性主张的宣言。自第一台粗陋的摩托车问世起,经过100多年的进化,摩托车已经发展得高度成熟,分化越来越细致,种类越来越丰富,不同个性、不同喜好的骑手都能找到适合自己的车型——激情如火的跑车,特立独行的定制摩托车,招摇张狂的滑胎车,乐山乐水、云游四方的旅行摩托车,威风气派的巡航车,挑战难度的探险摩托车……车如其人,坐驾为骑手亮出了性格的护照! 相似文献
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对一名车迷而言,如果说超级跑车是梦想,是速度的象征,那么敞篷跑车就是一种诱惑,是自由的代名词。敞篷跑车,是为那些热爱生活,向往自由,渴望挣脱束缚,并且始终坚持自我的人准备的。它不仅仅是一种交通工具,还是一种生活态度。敞篷跑车注定不属于高楼林立的城市森林,它只属于阳光和煦的鲜花小镇,属于海风拂面的滨海大道……驾着一辆敞篷跑车,就是驾驭着一种惬意享受的自由心境。阳光、海风、美景、空气,不一样的道路,映衬着不同类型的敞篷跑车,撩人心魄,引人向往。这些通常只能在好莱坞电影中出现的画面主角,如今星辉车模把这一切带到了车迷们的 相似文献
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1998年,川崎仿古街车W650面世,主要定位于欧洲和日本市场。质朴简洁的造型,经典怀旧的韵味,可靠的性能,迅速赢得了一批怀旧的粉丝。不过,由于日渐高涨的环保呼声,采用化油器的W650不再能满足日趋严格的排放标准,于2008年停产,让很多复古迷们惆怅不已。好消息终于传来,2011年W650的新一代接班人浮出水面,在继承W650古色古香的造型和韵味的同时,搭载了排量更大的电喷并列双缸,让等候多时的川崎迷们得偿夙愿。 相似文献
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作为一家私营企业的老板,庞青年在高档客车领域创造了一个市场占有率的神话,150万元以上客车市场接近70%的占有率.从无到有,庞青年的成功,绝非是一种偶然.现在,他正在努力打造属于自己的汽车产业链,从客车、卡车,再到轿车.庞青年的未来,想要怎样? 相似文献
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《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2012,50(4):573-596
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. 相似文献
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预应力曲线箱梁和异形箱梁的研究 总被引:7,自引:0,他引:7
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 相似文献
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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. 相似文献
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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。 相似文献
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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。 相似文献
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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. 相似文献