In the government work report of 2018, it was pointed out that “to consolidate the achievements of the blue skies in defending the war, the emissions of sulphur dioxide and nitrogen oxides should be reduced by 3% this year, and the concentration of fine particulate matter (PM2.5) in key areas continues to declineâ€. For this reason, the automobile industry must also assume its corresponding social responsibilities. According to the requirements of the government's work report, it is necessary to “initiate special treatment of diesel trucks exceeding the standard emission†in 2018.
"To carry out special treatment of diesel trucks exceeding the standard
For diesel vehicle emission problems, the technical upgrading of engine manufacturing companies must be the top priority for development. The problem of controlling energy-saving and emission-reduction of trucks is not a ring of powertrains but a system, which also includes transmission systems and post-processing systems.
In terms of energy consumption, the engine's work process naturally accounts for the largest proportion, but the energy loss of the power transmission system during the transmission system can not be ignored. The transmission gearbox with high transmission efficiency can not only transmit the power to the drive system maximally, but also can significantly reduce the energy consumption of the entire vehicle, thereby reducing the emission from the source.
At present, in the field of truck transmission, the transmission efficiency of the products with the highest transmission efficiency is as high as 99.7%. This data comes from the gearbox industry giant ZF ’s TraXon automated manual gearbox.
ZF TraXon tiptronic gearbox
According to the China Truck Network reporter, the ZF TraXon manual transmission has the highest transmission efficiency in the industry. The high transmission rate means that the transmission can transmit kinetic energy to the transaxle with the highest efficiency, thus making the vehicle operation more fuel-efficient. ZF's global data analysis shows that the TraXon automatic transmission can consume 5% to 8% less fuel than a manual transmission.
During transportation, TraXon's large gear ratio range can also significantly reduce engine speed and reduce fuel consumption. The reduction in fuel consumption is controlled from the source of emissions of sulfur dioxide, nitrogen oxides and other emissions.
Of course, for the "special emission control", the truck's post-processing system is even more important. The exhaust gas produced by trucks during transportation is the last and most important stage before they reach the post-processing system.
At this stage, domestic post-processing technologies are divided into two types: SCR systems and DPF devices. The DPF device can effectively purify 70%-90% of the particles in the exhaust gas without relying on auxiliary equipment such as urea solution, which is one of the most effective and direct methods for purifying diesel engine particulates. In the field of domestic DPF device research and development, FAW Jiexi Xichai has always been in the leading position.
According to the China Truck Network reporter, in 2009, FAW liberated Xichai for the basic research of the DPF plant, and after eight years of research and development, it successfully developed the first domestic diesel engine with a particle trap (DPF) installed and commercialized. . This engine has now obtained 42 national invention patents, which can effectively purify 90% of the diesel engine's particulate emissions, representing the highest level of environmental protection of domestic diesel engines. If all existing national heavy diesel vehicles are retrofitted, the national motor vehicle PM (particles) emissions will be reduced by 3/4.
FAW Jiefang Xicai DPF device
The reporter learned that at present, FAW Jiefang Xichai has formed an annual production capacity of 200,000 sets of new DPF engines, and the successful release of FAW Jiefang Chai DPF has not only met the national five emission standards, but has also been the follow-up to the six models. Development cleared up technical barriers.
Nowadays, the country’s determination to control air pollution is firm. As one of the pollution sources for diesel vehicles, emission control requirements are bound to become more stringent, and the development of efficient and direct DPF installations will be a general trend.
In 2018, the two associations proposed the “Special Measures for Controlling the Excessive Emissions of Diesel Vehiclesâ€. There is no doubt that commercial vehicles will be given a boost in their environmental protection work. Commercial vehicle manufacturing companies and component manufacturers will further implement the environmental protection work and consolidate them. Blue Sky defends the battle results.
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