Sistema de injeção eletrônica para motores propulsores de dois tempos

Abstract

The search for fuel economy and the need to comply with more stringent environmental requirements related to atmospheric pollutant emissions have led to the introduction of electronic injection control in marine propulsion engines. This monograph uses the two-stroke engines of the MAN B & W manufacturer, one of the largest in the industry, as a basis for the study, and briefly describes the main physical and operational differences between the engines with electronic injection control and the traditional purely mechanical motors produced by this manufacturer. Also highlighted are the mechanical, electronic and hydraulic components added to the engines with electronic control and the way these new parts offer a greater ability to control the firing cycle, allowing to achieve the expected performance gains. Other points discussed are the control system and the supervisory system, emphasizing the possibilities of interaction between the operator and the engine in the setting of the firing cycle and in the search for and resolution of possible failures. For the entire descriptive study, manuals and course materials offered by the motor manufacturer were used. It has also contributed to the development of the content all the technical knowledge of the author, acquired over five years of experience working with this equipment.