New breakthrough in diesel technology to further reduce NOx emissions

According to autonews, the Automotive News website, Robert Bosch said its engineering team has developed a new diesel exhaust treatment system. The exhaust emission value is far lower than the emission legal standard in 2020, which will help automobile manufacturers avoid the implementation of diesel vehicle ban in Europe and continue the life of diesel technology.

Volkmar Denner, Bosch's CEO, said at a news conference in Stuttgart on Wednesday: "this new technological breakthrough has given a new world to diesel technology, which is at the forefront of the storm, and it is expected to end the dilemma faced by the current diesel vehicles."

In addition, automobile manufacturers rely heavily on diesel technology to achieve their CO2 reduction targets. Although the emission of carbon dioxide from diesel engine is lower than that of gasoline engine, diesel engine produces more nitrogen oxides, which leads to harmful haze phenomenon and the decline of urban air quality.

Low emission under actual driving conditions:

NOx emissions are as low as 13 mg / km

Since 2017, European laws require new passenger cars to be tested on actual driving roads such as cities, suburbs and expressways, and the emissions per kilometer should be less than 168 mg. By 2020, the emission limit will be further reduced to 120 mg / km. However, diesel vehicles equipped with Bosch's latest technology have been able to reduce NOx emissions to 13 mg / km in actual driving emission tests, which is only one tenth of the legal emissions to be implemented in 2020. Even in the urban road environment, and the test standards are strict with the law, the average emission of Bosch test vehicles is as low as 40 mg / km. In the past few months, Bosch engineers have made breakthroughs. They combine advanced fuel injection technology, newly developed air management system and intelligent temperature management to achieve further significant emission reduction. With this innovative technology, no matter how fast or slow the driving speed is, whether the external temperature is high or low, on the highway or the congested urban road conditions, the NOx emissions of vehicles will be lower than the legal standards under various driving conditions. "For both business people and office workers, diesel vehicles will still be a big choice for urban transportation." Dr dunnar added.

Heat treatment technology

It is understood that Bosch's new tail gas treatment process optimizes the heat treatment technology of tail gas temperature, and greatly reduces the emission of nitrogen oxides, only about one tenth of that of Peugeot permitted by law. The new process does not require new hardware, and the system's tail gas treatment level remains very stable at low temperatures, dunnar said. New technologies will not increase the cost of making cars, and fuel consumption and carbon dioxide emissions will not be affected.

"With the advent of this new exhaust treatment technology, the ban on diesel vehicles sweeping the world's major cities will no longer be a problem," dunnar said. Why is that? This is because we already have the technology to substantially reduce NOx emissions on the actual road. "