1实例1 故障现象: 一辆某品牌50mL排量摩托车行驶2.6万km后,突然出现负载时加油门熄火、行驶时一冲一顿的故障.维修工更换过火花塞、高压包以及电子点火器等点火系统零件,又调整过化油器油位和混合气配气螺钉,始终未见任何效果,故障原因不详.
In the motorcycle industry,the European Union has taken the lead in the technical regulation(EU 168/2013)to clearly put forward the requirements for improving the safety of braking systems.For the people's personal security and the future development of the country,it is inevitable to improve the safety of transportation.Combined Brake System(CBS)is the entry level safety brake system for motorcycle.A suitable braking system that matches the whole vehicle will make the rider more comfortable and safer to drive.It can guarantee the vehicle safety to exert maximum performance and the highest driving degree.The design theory of combined braking system(CBS)for L3 motorcycle is to establish the design parameters and design concept of the brake system that match the whole vehicle.
The ISO international standard system for motorcycles was one of the foundations for the early establishment of Chinese motorcycle standard system.The current national standard system for emissions,infield,and electric motorcycles in China is established based on the basic characteristics of the motorcycle industry in China and relevant international standards(such as ISO and the European Union standard).The ISO international standard system now plays a crucial role in technology leads and technology integrating in many industries worldwide,and the motorcycle industry is no exception.At present,China is in a leading position in the formulation of ISO international standards for electric vehicles and intelligent connected vehicles,and has led the formulations of many international standards.This article will summarize and introduce the international standards related to motorcycles under the ISO international standard system.
In order to measure the acceleration noise effectively and accurately,the instantaneous speed of the motorcycle entering the test road should be accurately measured according to the standard requirements.In this paper,a wireless transmission type comprehensive road tester is designed.According to the time difference of the signal generated between each pressure belt and the distance between the pressure belts,the speed of the vehicle passing through the two pressure belts is calculated,so as to realize the speed measurement of the vehicle.The test data adopts wireless data communication between the measuring end and the receiving end,and the data acquisition port can be expanded according to the different standards and test requirements.It is easy to measure the speed of multiple vehicles and easy to operate.The test data is calculated and wrapped at the measuring end and then transmitted to avoid the data distortion caused by interference and realize the speed measurement of the vehicle.
This article studies the design of the rear suspension with a four link mechanism and analyzes the characteristics of the suspension type.Through adoption of motion simulation of UG software,it studies the stiffness curve of the rear shock absorber.At the same time,the force situation of the connecting object is simulated and analyzed.By comparing the changes in spring stiffness,force situation,and compression stroke etc.,a complete corresponding relationship is formed between the rear wheel load,rear wheel displacement size,and compression situation,Ultimately,the optimal design results are obtained by optimizing parameters,improving the design efficiency.
