电动摩托车功率匹配的研究

通过对电动摩托车行驶时各种阻力的分析,确定了其核心部件——电动机匹配的参数,并验证了其可行性。对相关的技术参数如电动机的额定转矩、额定转速、额定电流和摩托车的续驶路程等进行了计算和分析。     

摩托车排放后处理技术现状

简述了为减少摩托车污染物排放而采用的二次空气、多级补气和电控补气、燃油电喷技术等摩托车排放后处理技术,进一步阐述了这些技术与催化剂结合在降低摩托车排放污染物上的应用,分析了各种技术的原理和应用现状,同时对其优势和缺点进行了比较,阐述了目前排放后处理技术中存在的问题,对今后的发展提出了建议。     

摩托车碰撞模型的研究性评估和分析——ISO 13232标准应用研究

随着ISO13232-2005摩托车碰撞系列标准的发布，为评估摩托车产品影响人身和车辆安全考核提供了重要的参考依据。该标准不仅提高了摩托车产品对骑乘人员防护水平的认知，也促进了摩托车产品安全技术的不断提升。本文仅从摩托车碰撞实体模型建立方面，参考ISO13232-2005标准中碰撞试验模型及国际上部分关于摩托车公开碰撞的资料，结合实际检验工作需要，设定了可行性二轮摩托车碰撞模型。     

浅谈QM200GY越野摩托车后平叉焊接强度的提升

通过对6063、6061和日本7×××Zn系列铝合金材料试样进行拉力对比,选用材料6063（Mg＋Si合金）经T6热处理后,强度有很大提高。铝合金MIG焊,焊接接头易出现焊缝成型差、裂纹、气孔、烧穿,未焊透、未熔合和夹渣等缺陷;而TIG焊是一种高效焊接方法,焊接时保护气体从焊枪的喷嘴中连续喷出,在电弧周围形成气体保护层隔绝空气,防止对钨极、熔池及邻近热影响区的有害影响,从而获得优质的焊缝。整改后的后平叉经过跌落试验能达到8500次左右,路试验证也较整改前有明显改善。     

Limit braking of a high-performance motorcycle

A mathematical-model-based study of the limit braking of a high-performance motorcycle and rider is described. Front and rear brakes are operable independently. A dry road and high friction are presumed, such that full braking of the front wheel would lead to an overturn or ‘stoppie’ in colloquial parlance. Effective braking needs to maintain some loading on the rear wheel. A planar but otherwise detailed system model is set up and braking strategies for front and rear are devised. Parameters of the braking control schemes are derived with the help of an optimisation process, minimising the final speed in braking from high speed over a fixed time interval. Simulation results are examined critically and the strategy is developed until efficient use of the friction available is made. The nature of optimal braking events is demonstrated. The influences of slipper-clutch torque setting and the rear-tyre target load chosen are shown.     

A nonlinear virtual rider for motorcycles

This work presents a virtual rider for the guidance of a nonlinear motorcycle model. The target motion is defined in terms of roll angle and speed. The virtual rider inputs are the steering torque, the rear-wheel driving/braking torque and front-wheel braking torque. The virtual rider capability is assessed by guiding the nonlinear motorcycle model in demanding manoeuvres with roll angles of 50° and longitudinal accelerations up to 0.8 g. Considerations on the effective preview distance used by the virtual rider are included.     

浅谈非道路摩托车检测过程中的一些问题

在对非道路摩托车的实际检测中,整车产品质量存在如车架机械强度不够、车辆可靠耐久性不够、最高车速与实际车速不匹配、前后轮制动力不符合要求、排放超标,整车装配及轮辋偏差超标等问题,从中可以看出目前的非道路摩托车产品质量有待进一步提高,各企业唯有从车辆的设计、材料、工艺、装配和性能上全面改进产品,才能使非道路车产业得以长足发展.     

摩托车规费稽查方式探讨

针对摩托车规费依靠稽查征收的原因分析入手．指出了传统稽查方式中存在的缺点, 提出了应采取的正确措施。     

Common underlying steering curves for motorcycles in steady turns

We study the steady turn behaviours of some light motorcycle models on circular paths, using the commercial software package ADAMS-Motorcycle. Steering torque and steering angle are obtained for several path radii and a range of steady forward speeds. For path radii much greater than motorcycle wheelbase, and for all motorcycle parameters including tyre parameters held fixed, dimensional analysis can predict the asymptotic behaviour of steering torque and angle. In particular, steering torque is a function purely of lateral acceleration plus another such function divided by path radius. Of these, the first function is numerically determined, while the second is approximated by an analytically determined constant. Similarly, the steering angle is a function purely of lateral acceleration, plus another such function divided by path radius. Of these, the first is determined numerically while the second is determined analytically. Both predictions are verified through ADAMS simulations for various tyre and geometric parameters. In summary, steady circular motions of a given motorcycle with given tyre parameters can be approximately characterised by just one curve for steering torque and one for steering angle.     

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分析了摩托车运行特性、安全特性及其对城市交通和环境的影响，并基于广义费用建立了摩托车及其可替代方式的出行成本模型。以江门市区摩托车交通为例，通过对居民出行和社会经济状况的调查，得到摩托车交通的出行特征，应用广义费用模型估算出各种交通方式的出行成本，提出了可行的发展对策，供决策者参考。