GERMANY – Former Volkswagen CEO Martin Winterkorn is set to go on trial Tuesday for his role in the “dieselgate” scandal, nine years after the saga first plunged the German auto titan into crisis.VW admitted in 2015 that it had installed software to rig emissions levels in millions of vehicles worldwide, setting off one of Germany’s biggest post-war industrial scandals.Winterkorn faces charges including fraud over the use of the so-called defeat devices, which made cars appear less polluting in lab tests than they were on the road, and could be jailed for 10 years if convicted. He…