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Although a month has passed since the 2016 Hannover Motor Show in Germany, the new products and technologies displayed will continue to influence the future direction of global commercial vehicles. In addition to popular truck owners, European axle manufacturers such as BPW and SAF have also brought us front-end axle technologies such as carbon fiber axles and hub brake power generation. In this article, the author will analyze the four major trends in the development of trailer axles from the aspects of new technology and new materials for axles displayed at the Hannover Vehicles, Germany.
â— Lightweight use more new materials and new technologies
With the development of ultra-active vehicles for vehicles, the current long-distance vehicles are mainly based on standard-load transportation. Under the premise that the total weight limit is not changed, how to reduce the vehicle's self-respect is an urgent problem to be solved by the majority of vehicle owners. The weight of vehicles has been taken seriously by everyone. Many people are concerned about the lightweight of the tractors, but everyone ignores the trailer axles. At the 2016 Hanover Motor Show, trailer axle manufacturers in Europe achieved lightweighting of axles with new materials and technologies. These means of achieving weight reduction are worthy of reference by domestic axle manufacturers. In the future, the lightweighting of trailer axles will be the main trend of domestic axle development. 
At the Hanover Motor Show, BPW showed us an axle made of carbon fiber material. Compared to a traditional steel axle, the carbon fiber axle can significantly reduce the axle weight and reduce the weight of the axle under the premise of ensuring the strength to meet the needs of use. Vehicles can carry more cargo. 
If you say that carbon fiber axles are too far away from us, the lightweight axles produced by BPW are within easy reach. The lightweight axles exhibited by BPW at the show use lightweight components that can reduce the weight of an axle to 370 kg. This light weight benefits from light trailing arms and aluminum alloy wheels developed by BPW. Among them, the light trailing arm is forged from multi-stage hollow material. Compared with the traditional arm made of steel, this new type of vertical arm can reduce the weight of the axle by 14Kg. 
In addition, this axle also uses aluminum alloy wheels. The application of high-strength aluminum wheels can reduce the weight of the module by 18Kg. The use of light trailing arms in conjunction with aluminum hubs will reduce the weight of an axle to 370 kg. It is understood that BPW is developing a new type of material, FRC, which has a lower density than aluminum and a higher strength than steel. The application of FRC material can reduce the weight of the entire axle by 80Kg.
◠intelligent tire pressure monitoring system with brake <br> <br> popularity in the domestic main car tire pressure monitoring system is not popular today, the European trailer axle tire pressure monitoring has been promoting the popularity of the trailer. At the Hanover Motor Show BPW brings AirSave, an automatic tire pressure monitoring system. Compared with the traditional tire pressure monitoring system, the AirSave system is unique in its unique “automatic†character. The system can automatically control the tire and adjust the pressure of the tire in real time. 
The most common and traditional tire pressure monitoring system today is to monitor the deviation between the actual tire pressure and the optimal pressure through a remote information management system. It is found that the tire pressure is abnormal and an alarm is issued and it is not possible to perform deflation. The automatic tire pressure monitoring system of BPW can realize tire pressure monitoring to automatically pressurize the tires, so that the tires are always at the best pressure value, so as to reduce the chance of tire bursting and increase the service life of the tire. 
At present, trailer tire pressure monitoring systems can already be seen in China, but monitoring technology for trailer braking systems has not yet appeared. At the Hannover Motor Show, BPW exhibited a technology for monitoring the braking system. This technology enables the monitoring of the degree of wear and the braking temperature of the brake pads of the brake system. The owner can obtain data through the cargofleetDriverApp, according to the brake pads. The amount of wear determines when the axle brake system will be serviced.
Whether it is tire pressure monitoring or brake monitoring, its purpose is to increase traffic safety and reduce vehicle operating costs. In China, these two systems are basically blank. Intelligent tire pressure monitoring and braking system monitoring will also be one of the development trends of domestic trailer axles.
â—Energy saving and environmental protection hub power generation to help energy recovery 
In order to save energy and protect the environment and reduce vehicle fuel consumption, European engineers are also doing their best. At the Hannover Motor Show, BPW presented an axle with an energy recovery system called ePower. The working principle of this system is very simple. The axle hub has a generator. When the vehicle goes downhill, it can realize braking power generation. 
The system is suitable for trailers such as refrigerated trucks that consume a relatively large amount of electricity. Generally, two hub-generators are mounted on an axle, and sufficient power can be generated during the braking process for the cooling of the refrigerator, ultimately reducing fuel consumption. Realize energy saving and environmental protection.
â— Maintenance-free axle maintenance mileage reaches 800,000 kilometers
In recent years, China's logistics has developed rapidly. Whether it is a logistics company or an individual transporter, the annual mileage of vehicles is constantly increasing. There are many people with annual mileage of more than 200,000 yuan, and for some large logistics companies with adequate supply. The annual mileage of their vehicles is even more, and they even reach an annual mileage of more than 300,000 kilometers. High-mileage vehicle users are more demanding for maintenance-free, long-serving trailer axles. The maintenance-free axles on the market are increasingly favored by users. 
At present, the domestic trailer axles are generally maintained for 100,000 kilometers. If the annual mileage is 200,000 kilometers, it is necessary to maintain the hub twice a year. The second axle bridge maintenance delays the efficiency of transportation, and it also involves some of the user's operating energy. The use of maintenance-free axles does not require this, and it will focus more on vehicle operations. 
At the Hanover Show, both BPW and SAF have exhibited long maintenance, maintenance-free axles, which have been widely used in Europe. For domestic market demand, long maintenance and maintenance-free axles will be another major trend in the development of domestic trailer axles. 
At present, vehicles that use maintenance-free axles can already be seen on the road. Although the proportion is not large, the market demand is increasing every year. The long-maintained axle brands currently visible in China are mainly Fuhua, BPW and other brands. For example, BPW can provide users with 400K and 800K axles, of which the 400K axle can achieve 400,000 kilometers maintenance-free, while the 800K axle maintenance mileage reaches an astonishing 800,000 kilometers. The long maintenance mileage will greatly help improve the transportation efficiency.
It was once said that the countries of Europe and the United States are our tomorrow. This sentence is particularly valid for the commercial vehicle industry. Many of the trailer axle technologies introduced in this article have been widely used in Europe, and many people in China have never heard of it. Although the domestic trailer axle company has also made continuous progress in recent years, there is still a big gap with European manufacturers. In the future, lightweight, intelligent, energy-saving, and maintenance-free will be the four major development trends of domestic trailer axles, because these are related to the immediate interests of users, and which brands of axles can save users' peace of mind and save money. It will also win the market.
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Emulate Europe! Four major trends of domestic trailer axles