The Design of Control Boost Air Temperature System on Marine Diesel Engine Based on Trials Curves

Abstract

The air boost temperature cause a change in the specific fuel oil consumption, the exhaust gas amount and gas temperature and (NOx) emissions of the diesel engine. Controlling emissions is becoming a more and more important task in the development of diesel engines. Today the International Maritime Organization (IMO) is close to completing regulations prescribing the upper limits for nitrogen oxides (NOx) emissions from engines running on ships. The charge air temperature is not constant but varies with the engine load. For the execution of this work we have taken as a model a marine diesel engine type Wartsila NSD 12 ZAV 40S installed a board car ferry. Engine manufacturers provide charts on relationships gas flow, power etc experiments on a dynamometers bench and some Trials aboard. This work is based on data curves and trials for modeling of the control system. The paper is divided into three parts Relationship between the different parameters Design of the control loop Verify the controller design through simulation KeywordsMarine diesel enginecooling systemsimulationmodelling