A trench type power MOSgated device has a plurality of spaced trenches lined with oxide and filled with conductive polysilicon. According to one embodiment, a trace operation is initiated. When the engine is temporarily stopped by engine intermittent operation control, while the low-pressure fuel pump is stopped, actuation of the electromagnetic relief valve is prohibited. , that contain a color-stable amine electron donor in an initiation system for initiating polymerization of the composition.