共查询到18条相似文献,搜索用时 140 毫秒
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《世界汽车》2014,(11)
Q1:我对别克全新SUV昂科威非常感兴趣,听说它的四驱系统比较特别,请编辑老师介绍一下。
上海读者:杜天宇
A1:昂科威搭载的是适时四驱系统,提供两种不同版本供消费者选择,官方将两种四驱分别命名为“智能四驱”与“全路况智能四驱”,二者主要区别在于左右后轮动力分配。官方公布的资料显示,智能四驱主要会配备在精英版与豪华版车型上,其后桥配备一个多片离合器式限滑差速器,正常情况下以前驱为主,当系统监测到车轮打滑时,通过压紧离合器片将部分动力传递至后轮,以达到分配前后动力的目的。这套智能四驱系统的后桥限滑差速器装配在靠近左后轮的位置,在车轮不打滑时,后轮是不会获得任何动力的。由于是以前驱为主的四驱车型,如果两个前轮均处于打滑状态,车辆脱困则更多依靠车轮上的电子限滑辅助系统对车轮进行制动,从而达到脱困的效果。全路况智能四驱系统配备于旗舰版与运动旗舰版车型上,其与智能四驱系统主要区别在于它后桥上布置了两个多片离合器式限滑差速器,从前桥而来的动力可以通过两个限滑差速器按需分配给左右后轮,这样的方式无论在城市路面行驶还是在复杂路况下行驶时对车辆的行驶稳定性以及通过性都有很大的帮助。总体而言,昂科威的适时四驱系统结构并不算复杂,通过布置于后桥的多片离合器式限滑差速器达到分配后轮转矩的目的。 相似文献
上海读者:杜天宇
A1:昂科威搭载的是适时四驱系统,提供两种不同版本供消费者选择,官方将两种四驱分别命名为“智能四驱”与“全路况智能四驱”,二者主要区别在于左右后轮动力分配。官方公布的资料显示,智能四驱主要会配备在精英版与豪华版车型上,其后桥配备一个多片离合器式限滑差速器,正常情况下以前驱为主,当系统监测到车轮打滑时,通过压紧离合器片将部分动力传递至后轮,以达到分配前后动力的目的。这套智能四驱系统的后桥限滑差速器装配在靠近左后轮的位置,在车轮不打滑时,后轮是不会获得任何动力的。由于是以前驱为主的四驱车型,如果两个前轮均处于打滑状态,车辆脱困则更多依靠车轮上的电子限滑辅助系统对车轮进行制动,从而达到脱困的效果。全路况智能四驱系统配备于旗舰版与运动旗舰版车型上,其与智能四驱系统主要区别在于它后桥上布置了两个多片离合器式限滑差速器,从前桥而来的动力可以通过两个限滑差速器按需分配给左右后轮,这样的方式无论在城市路面行驶还是在复杂路况下行驶时对车辆的行驶稳定性以及通过性都有很大的帮助。总体而言,昂科威的适时四驱系统结构并不算复杂,通过布置于后桥的多片离合器式限滑差速器达到分配后轮转矩的目的。 相似文献
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在BaumaChina201O期间,伊顿公司与厦门厦工机械股份有限公司签订长期合作协议,并向厦工提供渐进式限滑差速器应用在型号为XG95611的5t轮式装载机上,这是伊顿渐进式限滑差速器产品首次在装载机上应用。 相似文献
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Y. S. Pyoun H. T. Kim Y. C. Lee A. Gafurov H. Kim D. H. Jung 《International Journal of Automotive Technology》2008,9(1):61-70
Surface topology, cone angle and the forces acting on the cone of the clutch type limited slip differential (LSD) are major
design parameters for the bias ratio and the noise condition. Therefore much research has been dedicated to these developments
but the results have been used to submit patents. A new cone type limited slip differential for sport utility vehicles and
recreational vehicles, which has a very simple structure and easy compliance with the vehicle performance, has been developed
by the axiomatic approach and the ultrasonic nano crystal surface modification (UNSM) technology. The design criteria and
optimal value of the design parameters are determined by the axiomatic approach utilizing CAE tools. Test methodologies in
a test rig and in a vehicle were also developed. Test results showed good performance of bias ratio and noise level but durability
is still under testing. This study is an extension of F2006P266, FISITA 2006. 相似文献
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In a dynamic vehicle simulation, longitudinal tire force is primarily based on the longitudinal slip (ratio). In the longitudinal
slip formula, state variables are used in the denominator. This causes a divergence problem for numerical simulations of vehicle
dynamics. To avoid this numerical singularity, a differential slip calculation method was developed for use in dynamic vehicle
simulations. However, this method also causes a singularity when the wheel velocity approaches zero in a pure slip state,
such as during sudden braking. In this paper, a new longitudinal slip calculation method, which can overcome singularities
in all velocity conditions, is proposed. For this purpose, the Taylor series is adapted to the slip formula and the idea of
virtual wheel rotation stiffness is introduced for the development of the slip equation. The physical phenomenon at the zero
slip state is analyzed. Finally, the proposed slip formula is used to solve the numerical singularity problem, and the non-singular
slip (NSS) calculation method is proposed. The proposed NSS method is applied to tire model performance test (TMPT) simulations
to validate its performance. 相似文献
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《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2012,50(5):533-550
This paper presents a semi-active differential, magneto-rheological fluid limited slip differential, which allows us to bias the torque between the driving wheels. It is based on the magneto-rheological fluid employment, by which it is possible to change, in a controlled manner, the internal friction torque and, consequently, the torque bias ratio. This device is an adaptive one and allows us to obtain an asymmetric torque distribution in order to improve vehicle handling. The device modelling and the control algorithm, realised for this activity, are described. The illustrated results highlight the advantages that are attainable regarding directional behaviour, stability, and traction. 相似文献
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新的轮式驱动电动车电子差速控制算法的研究 总被引:11,自引:2,他引:9
提出了一种用于轮式驱动电动车的电子差速控制算法,将转弯时转矩分配计算和基于车轮滑移率的开关控制相结合,对车辆左右驱动轮输入不同的转矩,同时根据轮胎偏转角的变化率确定目标滑移率。仿真研究证明,与采用机械差速器相比,新的电子差速控制系统鲁棒性好,车辆的驾驶更安全平稳,并能获得更优异的转向性能和更快的响应特性。 相似文献