Operation on Low-Sulphur Fuels Two-Stroke Engines
In various chemical combinations, the sulphur in the fuel oil has a lubricating effect. The use of DO and GO with a sulphur content close to zero and, at the same time, a low viscosity might cause fuel pump and fuel valve wear and, consequently, the risk of sticking (Fig. 7). But this situation needs to be considered also from a hydrodynamic point of view, so if the viscosity and, thereby, the oil film is thick enough, also low-sulphur fuels can be used. This risk limits the viscosity at the engine........

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