Parts recall is a trend

Due to the defects of the same parts, on April 27, 2009, Shanghai GM Co., Ltd., Chongqing Changan Ford Mazda Automobile Co., Ltd., and FAW Car Co., Ltd. jointly recalled three models of 1.3549 million cars. Many car companies have announced recalls on the same day due to quality problems of the same parts, which is rare in the history of Chinese auto recalls.

Coincidentally, since the second half of 2009, Toyota and other internationally renowned big-name cars have announced recalls worldwide one after another, mainly because of the quality problems of parts supplied by suppliers.

With the continuous recall, the quality of parts and components is getting more and more attention from the society. Car analyst Jia Xinguang said that behind the recall incident is one after another, a component production, inspection process control errors, component quality problems. Relevant experts have appealed that the scope of Chinese auto recall should be extended to parts and components companies.

Parts recall is a convention in developed countries

Since the implementation of the recall of automobiles in China, as of the end of 2009, China has completed the recall of 3.21 million defective vehicles, which has saved the society nearly 3 billion yuan in direct economic losses. At present, all types of vehicles (except motorcycles) of the M1 category (9 buses with download passengers), M2, M3 buses, N vehicles, and O vehicles have been included in the recall management of defective products. Just as Hui Boyang, deputy director of the quality department of the General Administration of Quality Supervision, Inspection and Quarantine, said at the publicity meeting of the truck recall system held on August 28, 2009, China's auto recall has achieved sound development. This is a qualitative leap.

However, a car consists of tens of thousands of parts. As long as one part has quality problems or design flaws, it will cause unsafe hidden dangers for the car. In the past six years since the recall was implemented, China has been recalling the entire vehicle and has not begun to recall the Auto Parts. According to statistics, from 2004 to 2009, the proportion of recalls due to defects in auto parts accounted for 30% of the total number of recalls in five years. Among them, the brake fittings have the most problems. There have been recall experts told reporters that the reason why the recall of parts and components has not yet been implemented, mainly because there are not many powerful parts and components companies in China, a parts and components company can provide services to a number of vehicle companies, multi-brand. Once the parts have problems, the scope of the recall is too great, and at present, China's parts and components companies have poor anti-risk capabilities.

The reporter has learned that recalling auto parts is a common practice abroad. In 2008 alone, NHTSA (US National Highway Traffic Safety Administration) recalled a total of 778 vehicles, including 20 tire recalls and 66 component recalls. Obviously, the recall of parts and components has become a general trend.

Parts quality drags industry development

It is an indisputable fact that China has become the world’s largest automobile production and marketing country. However, there is still a big gap between China and the world in terms of research and development capabilities, technological level, scientific and technological content, and added value of products. In particular, self-owned brand vehicles that account for 40% of the market share of passenger cars have lower grades and relatively lower quality stability. difference. One of the important reasons is that the auto parts industry in the Chinese auto industry is still not adapted to the needs of vehicle development and has dragged the healthy development of the Chinese auto industry.

There are more than 7500 parts and components companies in China, but there are few parts and components companies that can produce high-quality, high-tech parts. Most of them are in imitation or partial development. The gap between China's spare parts equipment and foreign countries is about 15 years. How the parts and components companies can effectively control the quality of parts and components is a matter that matters to the survival of the company and the lives of the majority of owners. In response, Zhao Ying, a researcher at the Institute of Industrial Economics of the Chinese Academy of Social Sciences, said in an interview with reporters that if there are not a number of Chinese auto parts companies that are internationally competitive and can produce high-quality products, the Chinese auto industry will become stronger and stronger. Aspirations cannot be achieved. He suggested that China's parts and components companies should persist in opening up to the outside world, strengthen cooperation with foreign small and medium-sized parts and components companies, and increase basic technological strength. Cooperation with foreign parts and components companies, purchase of products, process technology and key process equipment are the key to improving core competitiveness. He believes that some comprehensively-integrated parts and components enterprise groups should timely acquire or join foreign small and medium-sized spare parts enterprises in trouble, obtain the brand and technology of the products, lengthen the industrial chain, and achieve leapfrog development. In addition, the parts and components companies should also actively expand the international aftermarket parts and accessories market for developing countries, and strive to improve the level of international auto parts in China.

Car companies must learn to share risks

Prior to the formal recall of parts and components companies, to avoid the risk of large-scale recalls, experts suggest that auto companies can “step on two boats” when choosing a part manufacturer, which can share the recall risk.

The experience recalled by General Motors in March 2010 illustrates this point. According to GM’s sources, the cars produced in the Chinese market did not purchase the same parts and components as those in overseas markets, thus reducing the losses in the Chinese market. When Toyota recalled in a large area in the United States in 2009, the Chinese market was relatively calm, and it was also because of the difference between China Toyota's and American Toyota's parts suppliers. According to Toyota Motor insiders, when Toyota makes purchases of goods from global suppliers, it will be divided into two situations. A type of so-called "Toyota Map", which is a Toyota-designed component structure diagram, is provided to local suppliers for production processing after discussion. The second type, called the "recognition chart," is where Toyota makes technical requirements to its suppliers, and parts suppliers develop it independently. Toyota uses their parts after Toyota's technology license is reached. The implementation of the two procurement “maps” enabled GAC Toyota to effectively avoid large-scale recalls.

Led street light, compared with the traditional lighting technology, led lamps and lanterns have higher efficiency, and longer service life.Thus become the preferred bulb type, in order to reduce the energy consumption of indoor/outdoor lighting, get energy saving effect.
For street lamps, higher efficiency and longer life are indispensable for cost reduction.Designed for the LED power supply switch power supply, also must have a high efficiency and durability, to ensure that it has as long as the LED life without maintenance.Here, the resonant converter is one of the most popular power supply topology, this is because compared with previous power supply topology, their performance has brought higher power efficiency, and can reduce EMI.Soft switch is an important characteristic of resonant converter.But the resonant converter used in parasitic diodes (bodydiode) can sometimes lead to system failure.Stored in the parasitic diodes charge must be clear, to avoid large current and voltage surge, including topology structure of high dv/dt and di/dt.

LED Streetlight

Led Streetlight,Hight Power Led Streetlight,Led Street Lamp ,Led Solar Streetlight

NINGBO ZHENHAI BOLANG METAL PRODUCT FACTORY , https://www.blcastings.com