Conditions for the Application of an Indirect Method of Estimating the Loads of Diesels According to Fuel Consumption and RIM

摘要

It must be pointed out that the indirect method can be used only when there is no wear and the diesels and their fuel apparatus are properly regulated. Otherwise equations (1) and (2), in which the above assumptions were made, will be unacceptable. Even when this condition is observed, it should be kept in mind that which are assumed to be unchanged for identical states of diesels of the same model, can change owing to a number of factors, and if the influence of these changes on the power of the diesel under investigation is substantial, it is necessary to consider this influence, with the necessary corrections, in order to avoid intolerable errors.nOf all factors upon which and depend, changes in the state of the air at the inlet into the engine and the counter pressure at the outlet Pp can have the greatest influence on them (with identical rpm and loads in diesels of the same model). The state of the air at the engine inlet depends on atmospheric conditions and the manner in which it changes as it travels to the engine (pressure drop and preheating), while Pp depends on the resistance of the specific ship's gas exhaust system.