19th May 2016, 16:42
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| | Dieselgate at GM? Defeat devices claimed to be found in Opel cars
Forbes Auto 12-05-2016
Experts from Germany’s TÜV Nord found defeat devices in diesel cars made by General Motor’s European arm, the Opel Group, reports from Germany say. According to Germany’s Spiegel Magazin, these defeat devices cause “the exhaust gas treatment in those car to be severely limited, allowing the emissions of more poisonous NOx than permissible by law. Experts say this is illegal.” |
The tests counter claims by Opel and by Germany’s Transport Ministry that “no defeat devices like in vehicles made by Volkswagen were found in cars by other makers.”
Weeks ago, after various EU automakers were found applying very liberal interpretations of a loophole in EU emissions rules that allows the exhaust treatment to be turned off at certain temperatures to avoid damages to the catalytic converter due to condensation, Opel admitted that the exhaust treatment of a diesel-powered Opel Zafira would be fully operational only in a narrow temperature window “between 20 and 30 degree centigrade.” However, the testing and certification organization TÜV Nord now reportedly has found a number of other cases where Opel defeats its exhaust treatment.
According to the report, new tests, and an analysis of the engine computer’s code reveal that the exhaust treatment of the Opel car are switched off:
#When the engine runs at higher revolutions than 2400 rpm
#When the car goes faster than 145 km/h (90 mph)
#When the barometric pressure is less than 915 millibar, indicating an elevation of more than 850 meters (2,788 feet).
The pressure group targets both General Motor’s Opel, and the German Transport Ministry, which has “actively looked the other way,” as DUH General Manager Juergen Resch told Der Spiegel.
Contacted by Der Spiegel, Opel answered with “technical sophistry,” according to the magazine. Opel said in a statement Thursday, “we do not deploy any software that recognizes whether a car is undergoing an exhaust emissions test.” According to Der Spiegel, the effect of the defeat devices used by Opel amounts to the same, “namely that the exhaust treatment only works when the car is being tested.”
Soon after dieselgate broke, I met engineers at other large automakers who were appalled by the crudeness of the Volkswagen cheat, and who claimed that there are more sophisticated methods of cheating. If the findings of the report are confirmed, GM’s cheating definitely would be state-of-the-art. In an attempt to avoid a large-scale diesel backlash, which would be devastating in diesel-heavy Europe, the auto industry has tried desperately to paint the diesel scandal as an isolated act limited to Volkswagen, while environmentalists have claimed that the cheating is widespread.
The DUH (Deutsche Umwelt Hilfe) environmental group today lofted an especially heavy caliber missile in the direction of Opel’s Ruesselsheim. DUH published the “results of months of test in labs and on the road, and an analysis of the software of the engine computer of the Opel Zafira 1.6CDTi.” The group says that “as a result of the defeat devices, these cars poison the air in 90% of the time.” The group sent the results to Germany’s Transport Ministry, along with a request for “an immediate stop of registration of all affected Opel vehicles,” accompanied by a “revocation of the type approval, and an official recall order.”
and Forbes Auto 18-05-2016
Last edited by Rehaan : 24th May 2016 at 20:38.
Reason: As per my earlier PM to you...