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2、利用专用检测仪读取故障码 为了方便、准确、快捷地对汽车电子控制系统进行故障诊断.目前国内外为此开发研制出多种多样的专用的汽车检测仪.这些仪器有的称为汽车电脑检测仪,有的称汽车扫描仪,有的称为汽车电脑解码器,还有称电路测试箱等。 相似文献
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汽车检测设备的机电一体化设计 总被引:1,自引:0,他引:1
分析了传统结构设计的汽车检测设备,及其不能满足在汽车正常行驶状态下检测某些性能的要求。论述了汽车检测设备机电一体化的必要性,并分别介绍了由微电脑控制的动检测仪和汽车侧滑检测仪。探讨了汽车检测设备机电一体化设计中存在的若干问题。 相似文献
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为了保证夜间行车的安全.机动车应装备有良好的照明灯具(前照灯),以便照亮车辆前方的路面.及时发现道路障碍物及其它突发事件。而汽车制造厂出厂质保线的大灯检测仪和汽车检测线的大灯检测仪正是确保车辆前照灯状态良好的有力保证。 相似文献
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本文根据汽车前轮摆振机理分析了引起汽车前轮摆振故障的原因,并介绍了现代汽车检测仪在此类故障诊断中的应用。 相似文献
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浅析汽车前照灯光束照射位置的检测和判断 总被引:1,自引:0,他引:1
汽车前照灯光束照射位置是确保汽车安全行驶的必检项目之一。分析了自动追踪光轴检测仪不能自动检测灯光高度 ,无法自动判断前照灯光轴下偏移是否合格。分析了目前检测站常见的几种检测方法 ,检测距离与光强、光束照射位置检测的互相关系 ,并对前照灯检测仪的改进设计和简化前照灯检测标准提出建议 相似文献
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汽车故障专用电脑检测仪。汽车故障电脑解码器(简称解码器),它是一个小型电脑(如下图),用软件储存不同牌号和车型的汽车电脑及控制系统的检测程序和数据资料,并配有各种专用检测接头,使用时,在具有电脑自诊断故障系统的汽车仪表板下方设置一个故障检测专用插座,将电脑检测仪上的插头,插入专用插座,然后接通点火开关, 相似文献
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汽车故障专用电脑检测仪。汽车故障电脑解码器(简称解码器)。它是一个小型电脑(如下图),用软件储存不同牌号和车型的汽车电脑及控制系统的检测程序和数据资料。并配有各种专用检测接头。使用时,在具有电脑自诊断故障系统的汽车仪表板下方设置一个故障检测专用插座,将电脑检测仪上的插头,插入专用插座。然後接通点火开关,就可以根据汽车电脑故障自诊断电路的功能范围和检测要求. 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