Journal of Engineering Research

Compared with traditional diesel engines, electronic fuel injection common rail diesel engines have advantages including optimizing fuel injection, reducing fuel consumption, reducing the minimum smoke emission and reducing emissions of NOx. All this due to the improvement of its injection system. These optimization methods enable common rail diesel engines to achieve good atomization and full combustion at both high and low loads. However, the development time of common rail diesel engine is not long, and there is still a lot of knowledge and experience to supplement for diesel engine management personnel. MAN L48/60CR diesel engine is a new type of common rail electronic fuel injection four-stroke diesel engine, which is less assembled in domestic ships and less experienced in daily management and troubleshooting. Based on the attitude of learning this type of diesel engine and comparing with the traditional four-stroke diesel engine, the author briefly introduces the speed control and detection of MAN L48/60CR diesel engine, summarizes the advantages and disadvantages of this kind of design, so as to deepen the impression and provide reference for managers First of all, the paper introduces the traditional diesel engine speed control and detection process in order to understand function of main components; Secondly, the speed control and testing process of MAN L48/60CR common rail electronic fuel injection four-stroke diesel engine are described to understand the functions of related components. Finally, the relationship between the function of speed control and detection components of this two types of engines is clarified, and the advantages and disadvantages of this design are summarized.

Vessel；Electronic fuel injection；Common rail; Diesel engine；Speed control；Speed detection; MAN L48/60 CR