In order to meet emission standards, Pacific Automotive Network is equipped with particle traps. Most Japanese models do not have particle traps, but most German models have them. Different types of fuel have different types of particle traps. Diesel-only vehicles are equipped with DPF particle traps, while gasoline-only vehicles are equipped with GPF particle traps.
Exquisite document Motor vehicle transportation technology review: Which of the four mainstream motor vehicle exhaust particle traps is better?
4.5 points (more than 95 documents) 1892 reads 37 downloads 2014-02-20 upload 17 pages collection share transfer report APP client open If black, gray and white are used to evaluate the health effects of particulate matter The U.S. Environmental Protection Agency (EPA) believes that particulate matter is the cause of shortening life span and inducing asthma, and it is judged as black; the U.S. Food and Drug Administration (FDA) judges it as "gray that is infinitely close to black"; Germany The Ministry of Environment announced investigation results saying that diesel vehicle exhaust, which mainly contains particulate matter, is several times or even ten times more carcinogenic than gasoline vehicles. It believes that not only large trucks, but also small trucks and passenger cars should be equipped with particulate filters (DPF). Not only Germany, but most European countries that are actively committed to environmental issues believe that the harm of particulate matter to human health is "of course black". The automobile exhaust regulations "Euro 4" (Euro
4) that have been implemented since 2005 In fact, it is a requirement that vehicles must be equipped with particle traps.
The National Cancer Center of Japan also believes that particulate matter is carcinogenic and made a "black" judgment. In the Amagasaki Public Nuisance Litigation Case, the Kobe District Court also recognized that particulate matter can cause damage to the health of residents along roads and required relevant parties to take measures to control vehicle exhaust emissions.
As a countermeasure against particulate matter, the use of particle traps is one of the most effective methods. There are four companies in the world that are the first to launch particle trap products, but their characteristics are different and their technical levels are distinct. Based on the premise of "using low-sulfur diesel fuel below 50ppm", the order of "Nikkei Machinery" (now "Nikkei Manufacturing") magazine is: 1. Johnson Matthey, a catalyst manufacturer in the United Kingdom, 2. The United States, which produces environmentally friendly technology products Engelhard Company (now BASF Catalyst Company), 3 French Peugeot Company, 4 Japanese Isuzu Company.
Using a simple structure to realize low cost, the particle trap "CRT" (Continuously Regenerating Trap) developed by Johnson Matthey (Figure
1) ranked first.
The reason is that its structure is simple and its cost is low.
It only needs to be installed after the vehicle exhaust manifold to treat particulate matter. Since it is heated from the outside, there is no need to prepare additives, etc.
Figure 1 The particle trap "CRT" (Johnson Matthey) that can process particulate matter using only the waste heat of a diesel engine.
Patented in 1989.
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