black smoke definition
black smoke means smoke having the color of emissions produced by the incomplete combustion of toluene in the double wall combustion chamber of a smoke generator.
black smoke means smoke in the exhaust emissions of a diesel-powered motor vehicle which has a dark achromatic visual value and produces no predominant hue.
black smoke means smoke in the exhaust emissions of a diesel-powered motor vehicle which has a dark achromatic visual value and produces no predominant hue. “Blue smoke” means smoke in the exhaust emissions of a diesel-powered motor vehicle which has a hue of the portion of the visible light spectrum which lies between green and violet.
More Definitions of black smoke
black smoke means smoke which would appear to be dark as, or darker than, shade 4 on the Ringelman Chart as provided for in British Standard 2742C: 1957;
black smoke means smoke that appears black or approximately black.