Speed ​​up the pace of energy saving and emission reduction The engineering machinery industry has an arduous task

According to a survey conducted by the Chinese Academy of Sciences, China is one of the countries with the most serious waste of natural resources in the world, ranking 56th among the 59 countries surveyed; according to statistics, China’s energy efficiency is only 26.9% of the United States, Japan 11.5%. Although construction machinery is the second largest industry for internal combustion engine products, its scope of work is limited to construction sites. However, because of its high density, emissions are worse than those of automobiles, and the pollution to the environment is even more serious.

Since the Copenhagen conference, the United States and the European Community have unified their thinking. Since January 1, 2014, the United States and the European Community have unified their thinking. Since January 1, 2014, Tier 4 standards have been imposed. However, Tier 4 standards are still applied in China, and are proposed by energy and environmental protection experts. China will begin to impose a carbon tax on the “Twelfth Five-Year Plan” period. It is unlikely that large quantities of low-level construction machinery will be produced in the future. Therefore, the task of energy-saving and emission reduction in the construction machinery industry is even more arduous.

Compulsory Elimination According to the spirit of national efforts to promote energy-saving and emission-reduction, some experts suggest that reference can be made to the auto industry and through legal means to enforce the mandatory scrapping system for old construction machinery products, which is expected to help the continuous promotion of energy-saving emission reduction policies from the market perspective.

According to reports, most of the engines used in older products are assembled from the new machine to the product. The CO2 emissions of these internal combustion engines are much higher than the industry standards that appear. The use of hydraulic systems on old products, the phenomenon of running, running, and leaking are also one of the main factors that lead to pollution and waste of resources. Although these kits can be solved through replacement, if the entire hydraulic system is dismantled and reworked, the cost is very high. Moreover, it is not known whether the hydraulic systems used in the industry can match the old models.

Experts believe that although China’s construction machinery market’s inventory has only rapidly increased since 2000, the formulation of the scrapping period is not a temporary measure to eliminate existing old products. In a few years, the products produced after 2000 will also begin to age. The internal combustion engine products used at that time are no longer in compliance with the emission standards. The number of products that have accumulated since the beginning of the year has been no exception. If we then legislate by then, the price paid may be even greater. For the mainframe and accessories companies, if they implement the retirement system, they can safely eliminate outdated production capacity when they are renewing their production equipment, and do not have to worry that there is no supply of matching parts when users need to repair old products. This reduces the burden on the company and accelerates the pace of technological innovation in the industry as a whole. In addition, the setting of scrapping time will also reduce the security risks of the industry. The operating intensity of construction machinery products is generally larger, the aging of components and steel is inevitable, and the operating environment has a high risk factor for some products. These factors bring many hidden safety risks to production and life. Imagine a crane that has been in service for a long time. If the boom is broken, the consequences will be disastrous. If the same annual inspection system as the auto industry is applied to products and the retirement system is implemented, the tragedy will be largely avoided.

There are certainly many benefits to implementing the compulsory scrapping system for construction machinery products, but the difficulty of implementation is difficult to measure. Therefore, experts suggest that the enforcement of the mandatory scrapping system for construction machinery products needs to solve three major problems. First, users resisted. Although the forced elimination of old construction machinery products has many advantages, construction machinery products are a kind of industrial production data, which can bring economic benefits to users. If you use them more, you can get more benefits. Does the user accept the mandatory retirement system? It is difficult to determine. For large and medium-sized users, their product update cycle is relatively short, but small businesses and self-employed individuals who own only a few products will inevitably feel resistance. Second, the secondary market is difficult to control. Old construction machinery products no longer flow into the market through the host manufacturing companies. The secondary market has become the main channel for their circulation. Therefore, how to manage the secondary market has become the key. It is very difficult to control the flow of this part of the product, and these products are the most serious pollution to the environment. Third, the distribution of products is too broad and law enforcement is too difficult. A considerable portion of construction machinery products flow to mines or other remote areas. It is difficult to determine whether the law enforcement forces can cover these areas. The law stipulates that with the trailer trucks and mining trucks, the scrapping period is 8 years and the application can be postponed to 12 years. In fact, the majority of these products will not be used until the end of life, and users will naturally dispose of them in a timely manner. However, some construction machinery products, such as bulldozers and loaders, have relatively small operating strengths and may not change much in ten years. How to supervise the products in these areas is also difficult.

At the BICES 2007 in Beijing, Guizhou Zhanyang Power brought a hybrid wheel excavator product. In 2009 BICES, Sany Heavy Industry and Komatsu also launched their own. Hybrid products. There are more and more companies that are making hybrid efforts. This is very encouraging. However, experts believe that this is still a way to stop the symptoms, power loss, battery pollution and safety during the two conversions of power... Each problem is difficult to solve. From an environmental point of view, electricity is a clean energy source that does not produce tail gas emissions, nor does it create carbon dioxide effects. But one thing that cannot be ignored is the environmental issue of the battery itself.

Experts said that solving the emission problem of construction machinery must start with the power system, but this problem has not been paid attention by internal combustion engine companies. Although the sales volume of construction machinery products is large, compared with the automobile industry, it is still a small matter of confusion. Therefore, the R&D focus of internal combustion engine companies is generally focused on the automotive industry where the working environment is relatively stable. Therefore, to solve the problem of energy saving and emission reduction of construction machinery, it must be the cooperation of two industries, or even multiple industries, to be successful. Experts stressed that all companies should actively broaden their thinking in addressing energy-saving and emission reduction issues. You can't get into the air because you already have a hybrid solution. After all, construction machinery is not an electric toy, and relying on electric power is only an expedient measure after all. Every method that can promote the energy saving and emission reduction of construction machinery products is worth encouraging.