Bosch saves the Diesel?

Stuttgart, 26. April 2018

The Diesel is on the ground. In the case of New - and used-car dealers of the auto-ignition is like lead, the threat of driving bans and not scare the consumer. Even helpers can be called a threshing merrily at him. Only six percent of German citizens would choose when buying a new car for a Diesel, so a study of the TÜV-Association. But now, Bosch is to protect the allegedly doomed engine. New developments of the company can assist manufacturers to reduce the nitrogen oxide emissions of vehicles so drastically that they already comply with future legislative limits.

Massive Nitrogen Oxide Reduction

Specifically, it is about the now presented operating in the Real-Real Driving Emissions (in short RDE), the current and also the from 2020, applicable nitrogen oxide limits of a maximum of 120 Milli grams per Kilometer offers. Bosch did not invent the wheel new, but existing technology is further refined. Additional components with consequent additional costs were not necessary. In the case of legally standardized RDE-rides, Bosch has achieved according to a value of only 13 milligrams per Kilometer, even in the expensive city trips, it is only 40 milligrams.

A question of temperature

Two influences were so far vehicles is critical for the reduction of nitrogen oxide emissions in diesel: one is the driver. Bosch has found a rapid response of the air system of the engine, the technical antidote. The dynamic the drive, the more dynamic, the exhaust gas recirculation must be leadership. This is also made possible by the turbocharger, the response is faster than in the past. And with the combination of High - and low-pressure exhaust gas recirculation, the air system is even more flexible. Thus, the driver can start-up quickly, without the emissions are rising strongly. Equally important is the influence of the temperatures is. For an optimum nitrogen oxide conversion in the exhaust gases must be more than 200 degrees – a temperature which trips in the city is often not achieved. Here, one relies on a sophisticated thermal management of a diesel engine. Bosch controls are now active, the exhaust gas temperature: the exhaust system is so hot that she works in a stable temperature range, and the emissions remain at a low level.

No subsequent alterations are possible

The new Bosch solution is based on components available on the market. It is consolidated according to the clients now available and can be included in the series development. With the help of artificial intelligence you want to go a step further and the combustion engine so far does not develop that this pollutes the surrounding air with the exception of CO2 equivalent. However, the innovative Bosch diesel technology has a drawback: it can not be subsequently retrofitted. In addition, you must be from any car manufacturer individually to the respective motors adapted to.

Scheuer against technical modifications

Meanwhile, Federal transport Minister Andreas Scheuer rejects a technical retrofitting of older Diesel cars: My Ministry has the legal, technical and financial concerns about the Diesel conversion", said the CSU politician of the automotive club ADAC. "You would have to draw vehicles and shut out, which have not been retrofitted. And I don't want to."(rh)