in case the vehicle is driving and the engine is off, keep the speed virtually...

in case the vehicle is driving and the engine is off, keep the speed virtually at Max(gearboxSpeed, Idlespeed)

VectoCore/VectoCore/Models/SimulationComponent/Impl/StopStartCombustionEngine.cs

@@ -84,7 +84,10 @@ namespace TUGraz.VectoCore.Models.SimulationComponent.Impl
 				//throw new VectoSimulationException("Combustion engine cannot supply outtorque when switched off (T_out: {0})", outTorque);
 			}
 			CurrentState.EngineOn = false;
-			CurrentState.EngineSpeed = DataBus.VehicleInfo.VehicleStopped || outAngularVelocity.IsEqual(0) ? ModelData.IdleSpeed : outAngularVelocity; //ModelData.IdleSpeed;
+			CurrentState.EngineSpeed = DataBus.VehicleInfo.VehicleStopped || outAngularVelocity.IsEqual(0) 
+				? ModelData.IdleSpeed 
+				: VectoMath.Max(outAngularVelocity, ModelData.IdleSpeed);
+
 			CurrentState.EngineTorque = 0.SI<NewtonMeter>();
 			CurrentState.EngineTorqueOut = 0.SI<NewtonMeter>();
 			CurrentState.EnginePower = 0.SI<Watt>();