Can the National IV emission standards for heavy-duty diesel engines be implemented as scheduled on January 1, 2012? This problem has caused many heavy-duty truck companies or engine companies to have some difficulties. In an interview, the Ministry of Environmental Protection, Tang Dagang, was asked: “Why can we implement the heavy-duty diesel engine (hereinafter referred to as “heavy diesel†in the fourth quarter of the year?): “Why can it not be implemented as scheduled? Two major oil giants – PetroChina and Sinopec has made it clear that it will be able to fully provide the country’s fourth-draining vehicle diesel fuel from June 30, 2011. According to our recent understanding from internal combustion engine associations and engine companies, the heavy firewood produced by these companies has not reached the national emission limit. Question: Since June 30, 2011, the oil products have met the requirements, and heavy-duty diesel engines have no problem. Then, what reasons can we postpone the implementation of the fourth national emission on January 1, 2012? For some heavy-duty truck engines, Tang Dagang said that “the engine of some heavy-duty vehicles may not meet the National III standards because of the added diesel oil.†Perhaps the oil used by individual users is not good enough, causing the engine to have some problems. However, this issue only requires If it is not a large area, it will not affect the normal implementation of the National IV emissions." As for whether China's five emissions of light-duty diesel engines were implemented as scheduled on July 1, 2013, Tang Dagang stated that because it is now in 2011 and there is still a long period of time since July 2013, it is not yet feasible to say whether this time can be met. on schedule. Sheet Metal Cold Working Service In metal technology, cold working refers to the processing technology of plastic deformation of metals below the recrystallization temperature, such as cold rolling, cold drawing, cold forging, stamping, cold extrusion, etc. The deformation resistance of cold working is large. While forming the metal, work hardening can be used to improve the hardness and strength of the workpiece. The cold processing of sheet metal processing is suitable for processing metal parts with small cross-sectional size and high requirements for processing size and surface roughness. Sheet Metal Cold Working Service,Sheet Metal Stamping,Commercial Sheet Metal,Stainless Steel Fabrication,Aluminum Sheet Metal Fabrication Pro Success Development Limited , https://www.prosuccess-metal.com
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