During trade fair Nor-Shipping in June engine manufacturer MAN announced the[ds_preview] retrofit of its 20,000th slide fuel-valve, which was first introduced at the turn of the millenium. Slide fuel-valves come as standard on all new MAN B&W engines but can also be retrofitted on MC engines. The slide fuel-valve eliminates the so-called »sac volume«, which reduces fuel-oil consumption and eliminates dripping from the fuel-valve nozzle. Compared to conventional valves, the slide fuel-valve has NOx-reduction potential. The reduced sac volume leads to an improved combustion process, resulting in fewer deposits throughout the gas ways and a reduction in overall emissions, such as HC, NOx and particulate matter. Furthermore, visible smoke conditions are also greatly reduced as a result of the improved combustion. Hence engines fitted with slide fuel-valves does not need to run at high revolutions in order to clean exhaust channels.
