In 2009, the overall economic situation in China improved, and the commercial vehicle market in China has fully recovered. The production and sales of commercial vehicles have all broken 3 million. Rejoicing, we must clearly understand the gap between domestic commercial vehicle technology and internationally renowned commercial vehicle companies. How to improve the technical level and develop independent brands is an urgent problem to be solved in the future development of commercial vehicle companies in China. Raising the Technical Level in Three Aspects and Strengthening the Lightweight Development of Automobiles At present, domestic commercial vehicle technology continues to innovate and develop. In terms of comfort, domestic commercial vehicles pay more attention to humanistic design. Commercial vehicles produced by some manufacturers are comparable to high-end passenger vehicles in their indoor and outdoor driving settings. In terms of safety, the performance of domestic commercial vehicle owners and passive safety systems has reached national standards. In terms of environmental protection, while domestic commercial vehicles increase engine power, various energy conservation and emission reduction levels are also increasing. However, the process of stepping forward is not all the way. Take the example of improving environmental protection technologies, China's commercial vehicles are seeking development in the game trade-offs. According to Tong Jingen, China National Heavy Duty Truck Chief Economist, the international mainstream commercial vehicle engine emission standards Euro III, Euro IV, and Euro V are proposed by developed countries and are strongly advocated globally. He said that on the one hand, of course, we must unswervingly increase the level of emission reduction; on the other hand, we must not blindly engage in "equipment competitions" with developed countries, consume empty enterprise development potential, and must gradually improve the environmental performance of our products. In solving the most important propositions of the automotive industry, energy saving and environmental protection, it is not difficult to understand the advantages of lightweighting because it is an effective way to solve this problem. With its light weight, fuel consumption will surely decrease. But many consumers think that if the car is light, is it not safe? In this regard, Zhang Xiaoping, director of the Department of Mechanical and Electrical Engineering of the School of Automobile Engineering at Chang’an University, said: The weight of a car is not necessarily linked to safety. The two are not contradictory. In fact, the safety of cars has different requirements for different parts. For example, there is no buffer on the left and right sides, and it is necessary to improve the safety by hitting rigid bodies such as steel beams. For the front and rear parts of the buffer zone, the energy absorption of the bumper, engine, and trunk is more important. Lightweight can also bring better control. As the vehicle is light, the acceleration performance at the start is better, and the braking distance at the time of braking is shorter. The fuel consumption of a car mainly depends on the displacement of the engine and the total mass of the car. Under the premise of keeping the overall quality, performance, and cost of the car unchanged or even optimized, reducing the weight of the car can increase output power, reduce noise, improve handling, and reliability. Improve vehicle speed, reduce fuel consumption, reduce exhaust emissions, and increase safety. The safety of the vehicle is mainly based on the protection of the person when the accident occurs, rather than on the degree of damage to the car. Heavy cars collide with light cars, and heavy cars have less damage, but the degree of damage is closely related to energy-absorbing body design and active and passive safety configurations. Nowadays, many vehicles use sunken engines and so on. In order to crash, the engine will automatically sink and will not cause harm to passengers. Therefore, lightweight technology itself does not contradict security. The truly safe body should be "rigid when rigid, deformed when deformed." Just in reality, it may be that the "lightweightness" of some models is not due to technological advancement, but rather to the so-called jerry-building cuts, which will affect vehicle body safety. An unpublished survey report completed by the China Association of Automobile Manufacturers in the second half of 2009 shows that there have been lighter weight and fuel consumption tests on hundreds of domestic models. The results show that there is a significant gap between self-owned brands and joint venture brands, European and American brands, and Japanese brands. Everyone says that he is the “fuel economy king†car market. This report gives specific answers and future trends. Lightweight structural design and analysis are currently the fastest growing domestic and foreign lightweight technologies. Car consumers are increasingly demanding vehicle safety. However, the entire society is increasingly calling for environmental protection and energy conservation. Automobile manufacturers have to turn to more solid, lighter materials for vehicle construction. At present, European large-scale automobile manufacturers are carrying out "ultra-light car" projects, and on the basis of stabilizing prices, reducing the weight of cars by 30%. In the design of ultra-lightweight car bodies in Europe, the proportion of high-strength steels exceeds 80%. In the situation where the new energy route is not yet clear, lighter weight has become the global mainstream automobile company and it is in line with the low energy consumption tradeoff line. In this regard, the time left for China is not much. The arrival of new energy era Commodity vehicle energy-saving technology must speed up The "Auto Industry Adjustment and Revitalization Plan" has clearly stated that by 2011, the goal of 500,000 production capacity will be formed. In 2009, it may be called China's first year of new energy vehicle development. From Beijing to Tianjin and from Shanghai to Tangshan, new energy auto industry bases have been established in various regions. Domestic commercial vehicle companies also accelerate the development of new energy vehicles. It is understood that the development path of new energy vehicles of FAW Group will be based on hybrid vehicles, pure electric vehicles, and fuel cells. It plans to build an annual output in 2012. The production base of 11,000 hybrid cars and 1,000 hybrid buses. "Daikin Dragon" took the development of new energy buses as a bright spot for expanding domestic and overseas markets, and established a multi-sector new energy bus R&D center. In early 2009, after cooperating with Dongfeng Electric Vehicle Co., Ltd. to develop and produce 100 hybrid buses and deliver them to Wuhan Bus Company, in May 2009, it successfully developed a batch of new energy buses to enter Singapore. Achieved the first export of domestic self-owned brand hybrid buses and took Daijinlong's first big step in expanding overseas markets. From January to November of 2009, the sales volume of LPG passenger cars, LNG buses, and hybrid buses increased by 178.98% to 3,034 vehicles. Compared to the cold ride in the passenger vehicle market, these "new energy vehicles" have begun to grow rapidly in China's commercial vehicle market. In 2010, the country will further promote the development of new energy vehicles. New energy vehicles have risen to the national strategy and have been separated from the limitations of the automotive industry. We have reason to believe that the upcoming new energy automobile industry in 2010 will drive the development of related industries and enter the "fast track" of development.
Take a deep breath, close your eyes, the world has the freshest oxygen ... Yu Quan's "Deep Breath" is well known to us, but as the environmental problems become more and more serious, the haze sky also increases, PM2.5 PM10 and so on Vocabulary has also been mentioned more and more, and air purifiers have quickly become popular on the market with this "air quality" trend. Along with this, the air-clean brand has sprung up, and various technologies are dazzling. Which ones are indeed effective and which are just tasteless propaganda? How does the Air Purifier bother us to get rid of pollution? And look at the editors for you.
Analysis of air purifier
The critical value of PM2.5 content is 75 μg / m3
The pollutants in the air mainly include soot, total suspended particulates, inhalable particulates (PM2.5) and fine particulates (PM10). The smaller the diameter of the particulates, the deeper the part that can enter the respiratory tract. 10 micron diameter particles It is deposited in the upper respiratory tract, and particles below 2 microns can penetrate 100% into the bronchiole and alveoli.
1k-5k air purifier prices vary greatly
The air purifier products on the market not only have various functions, but also have prices ranging from thousand yuan to tens of thousands. The pricing of imported products is generally higher than that of domestic brands. Except for the core technology of many brands, the promotion of purification effects is similar, and consumers need to choose according to demand.
The air quality standard of 74 key cities is only 4.1%
According to the data of the press conference held by the State Council Information Office on June 4, according to the new "Ambient Air Quality Standards", the six pollutants SO2, NO2, PM10, PM2.5, CO and O3 were evaluated, 74 new standards In the first phase of monitoring and implementation, the proportion of cities that met the ambient air quality standards was only 4.1%, and the other 256 cities implemented the old air quality standards, and the proportion of cities that met the standards was 69.5%.
Air purifier sales increased by 90.5% compared with last year
According to a report recently released by the China Electronics and Information Industry Development Institute, due to the haze weather, air purifiers have become the most concerned home appliance products, with sales of nearly 2.4 million units nationwide last year, a year-on-year increase of 90.5%; retail The amount reached 5.6 billion yuan, a year-on-year increase of 105.9%.
HEPA filter needs to be replaced in March
The filter of the air purifier Air Cleaner is the same as the filter of the water purifier, and it is not effective for a long time. After long-term use, the accumulation of dust on the surface of the filter will also cause the filter to gradually fail. Therefore, when the haze is more serious, the non-washable HEPA filter needs to be replaced every three months.
Merchants claim that the purification rate is more than 99% for the concept of stealing
99% or even 99.99% seems to have become a slogan for many air purifiers on the market. Many brands of products promote their high removal rate of PM2.5 and formaldehyde. In fact, this kind of publicity is more of a kind. The slogan of stealing the concept, the removal rate of 99% is the effect of the material itself on PM2.5 and formaldehyde, not the effect of actually running in space.
Air Purifier with carbon filter Air Filtration System,Much Function Air Filtration System,Smart Air Filtration System,Household Air Filtration System Ningbo Zhe Kai Electric Appliance Co.,Ltd , https://www.cnairpurifiers.com