共查询到20条相似文献,搜索用时 46 毫秒
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"超运证"为何不能联网办理? 四川司机尤女士向记者反映说,她的大货车拉运大型设备急送北京,因只有四川公路局的超限运输证,被公路执法检查人员拦截在川陕交界.费尽周折,耽误了两天,才继续前行. 相似文献
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3月13日上午9时30分左右,在云南省大保高速公路永平境内的马道子隧道,一辆满载日用百货的大货车在行驶过程中发生侧滑,正好横在了隧道口,将隧道堵得水泄不通.…… 相似文献
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城郊农村,一个小院子,主人进城去了,只有一条狼狗在守门。有脚步声传来,狼狗叫起来。来人是主人出嫁的女儿,她特意来看爸爸和继母。她打开门,喊一声狗就不叫了,狗是认识她的。见爸和继母不在家,她坐了一会,就放下礼物,留张纸条要走了。刚要关门,进来一个中年人,模样憨实,农村人装扮,说是一家子,是××的侄儿,住在××村,借用一下摩托车,中午就送过来。她只知道继母的娘家在××村,说得还投合,但不知道有什么亲属,见那人还老实,想不会有错,再看院子里放的摩托车,已经很旧,老爸刚换了一辆新车,骑走了。就没想很多,说:"你看能不能发动着。"那人去试了一下,很快就发动着 相似文献
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事故经过:
某单位一台矿内运输自卸汽车在存矿场进行卸载作业时发生倾倒事故,所幸侧翻时速度较慢,驾驶员反应灵敏,及时采取了自我防护措施,没有受伤,只是受了惊吓.车辆损失较大,两块蓄电池壳体破碎,燃油箱破裂造成燃油泄漏,举升油缸活塞杆轻度弯曲,举升油缸底座与车架连接处断裂. 相似文献
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G. D’Errico T. Lucchini S. Merola C. Tornatore 《International Journal of Automotive Technology》2012,13(3):389-399
A combination of experimental and numerical methodologies is proposed for the investigation of knocking in spark ignition
engines to aid in better understanding the physical and chemical processes that occur and to exploit the capabilities of a
developed computational tool. The latter consists of a thermo-fluid dynamics model, which is part of an advanced 1-D fluid
dynamics code for the simulation of the entire engine, and a complex chemistry model, which can be embedded into the thermo-fluid
dynamics model using the same integration algorithm for the conservation equations and the reacting species. Their mutual
interaction in the energy balance will be considered. The experimental activity was carried out in the combustion chamber
of an optically accessible, single-cylinder P.F.I. engine equipped with a commercial head. The experimental data consisted
of optical measurements correlated to the combustion and auto-ignition processes within the cylinder. The optical measurements
were based on 2-D digital imaging, UV visible natural emission spectroscopy and the chemiluminescence of radical species (OH
and HCO). The engine parameters, the pressure signals of the related data and optical acquisition are compared on an individual
cycle basis in the simulation by running the engine at a constant speed and varying the spark advance from normal combustion
to heavy knock conditions. 相似文献
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Lasse Engbo Christiansen 《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2018,56(2):249-280
In this article a theoretical investigation of the dynamics of a railway bogie running on a tangent track with a periodic disturbance of the lateral track geometry is presented. The dynamics is computed for two values of the speed of the vehicle in combination with different values of the wavelength and amplitude of the disturbance. Depending on the combinations of the speed, the wavelength and the amplitude, straight line forward motion, different modes of symmetric or asymmetric periodic oscillations or aperiodic motions, which are presumably chaotic, are found. Statistical methods are applied for the investigation. In the case of sinusoidal oscillations they provide information about the phase shift between the different variables and the amplitudes of the oscillations. In the case of an aperiodic motion the statistical measures indicate some non-smooth transitions. 相似文献