Diesel Gate: Here is the engine that Volkswagen was cheating with – Auto Motor & Sport

One of Volkswagen’s common diesel engines have a cheat mode that reduces emissions when the car test run in the laboratory.

Of Erik Söderholm , Today, 6:27

EA189 engine meet Euro 5 emission requirements. According to Volkswagen, no newer engines that meet the Euro 6 requirements, have the so-called “cheat mode.”

  

The revelation that Volkswagen has cheated with emissions of diesel cars has not escaped anyone. Volkswagen recognizes that as many as eleven million cars may have a special “cheat mode” that temporarily reduces emissions of nitrogen oxides when the vehicle emission testing. But in normal traffic emissions can be up to 40 times higher.

The scandal has become known as Diesel Gate.

engines as they apply Internal Code EA189. It is a 2.0-liter engine that has existed in many different versions of the Volkswagen, Audi, Skoda and Seat. Some of the most used versions with 140 and 170 horsepower.

This revelation, however, began in the US and where is the engine in the Golf, Jetta, Jetta Sportwagen, Beetle and the Audi A3 (model years 2009-2015) and in Passat (model year 2014-2015). Exactly what models and versions that may have the same type of software here in Europe is not entirely clear.

  

When “cheat engine” was replaced , Volkswagen sold 488,123 cars with EA189 engine in the USA under the name “Clean Diesel”. EA189 engine uses a “NOx-trap” which collects NOx, and uses a temporary excess fuel to convert the NOx to water and nitrogen.

The second approach to reducing NOx emissions, called SCR purification. It involves injecting a carefully balanced amount of urea fluid – or “AdBlue”, which was called in Europe – into the exhaust pipe. In the hot exhaust gas is converted to liquid ammonia that reacts with nitric oxide which is converted to water vapor and nitrogen. NOx reduction is very effective, some 90 per cent. The disadvantage is that the SCR purification more expensive diesel models and increases operating costs.

As the engines Volkswagen cheated by not using AdBlue to reduce NOx emissions chose one or some of the company to install the special “cheat mode” instead, until newer engines with AdBlue launched. If not NOx trap is emptied regularly seeping surplus out through the exhaust pipe and the biggest advantage is that you thus saving fuel. The driver experiences no difference and NOx levels are not labeled in any material way, the gases are both odorless and invisible, unless you have special measuring equipment.

When Volkswagen launched engine we are do have a “cheat mode” was described as clean and modern. In the press material for the Volkswagen Jetta from 2011 says that the motor has a so-called NOx trap that Volkswagen calls the storage catalytic converter.

“It guarantees that this TDI engine meets emissions requirements for all 50 states in the US,” wrote Volkswagen.

In the video below, published by Volkswagen during the night of Wednesday, asking the CEO Martin Winterkorn apologized for the faulty software. He says among other things that he knows how dedicated and responsible employees are in the group and points out that the mistakes that “few have made” not to discredit all other work. Remains to be seen how many there were who really knew the software was cheating until the low NOx emissions.

Here you can learn exactly how Volkswagen cheated on diesel emissions.

  
  
   

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I believe that sales of diesel cars will be affected by this revelation (= gas).