| 摘要 |
<p>The invention relates to a method for the operation of a longitudinally scavenged two-stroke large diesel engine (1), having a piston (20) being arranged to be movable to and fro in a cylinder (2) along a running surface between a bottom dead centre (UT) and a top dead centre (OT), wherein a fuel is fed into the cylinder (2) of the large diesel engine (1) by an injection nozzle and scavenging slots (3) are provided at an inlet region of the cylinder (2) for the supply of a predetermined amount of scavenging air (4). An outlet valve (5) is provided at a cylinder cover of the cylinder (2) for the expulsion of a combustion gas (6), wherein, in said method, a fresh air (7) available at an environmental pressure is sucked in by a first exhaust gas turbocharger (8, 81) and / or by a second exhaust gas turbocharger (8, 82) and said fresh air (7) is supplied to the cylinder (2) as the scavenging air (4) at a predetermined charge air pressure via the scavenging slots (3), so that an ignition gas mixture is generated in the cylinder (2) from the scavenging air (4) and the fuel. According to the invention, at least one reducing-means (9, 91, 92, 93) for reducing an exhaust gas-flow through the first exhaust gas turbocharger (8, 81) and / or through the second exhaust gas turbocharger (8, 82) is provided, and wherein, in said method, the exhaust gas-flow through the first exhaust gas turbocharger (8, 81) and / or through the second exhaust gas turbocharger (8, 82) is reduced in dependence of a given value of an operational parameter of the large diesel engine (1). Furthermore the invention relates to a longitudinally scavenged two-stroke large diesel engine (1) for the carrying out of the method.</p> |
