LARGE SLOW RUNNING TURBOCHARGED TWO-STROKE INTERNAL COMBUSTION ENGINE WITH CROSSHEAD AND EXHAUST- OR COMBUSTION GAS RECIRCULATION SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide an engine that meets various emission restrictions, and is able to do so economically from both a construction cost and an operation costs point of view.SOLUTION: A large slow running turbocharged two-stroke internal combustion engine 1 with an exhaust gas recirculation system has a predetermined maximum continuous rating. The engine comprises an exhaust gas system, a charging air system and an EGR system connected to the exhaust gas system at a split point 20 and connected to the charging air system at an admixing point 10. A portion of the exhaust gas system downstream of the split point has a specified capacity to handle at the most a mass flow of the exhaust gas that is less than a mass flow of exhaust gas coming from the all of cylinders 4 at the maximum continuous rating. The engine is configured to be operated with the lowest possible EGR ratio that is possible without the mass actually coming from the cylinders minus the mass flow going through the EGR system exceeding the specified capacity.