FORECASTING OF HIGHLY BOOSTED LOCOMOTIVE DIESEL ENGINE PARAMETERS WITH MAXIMUM COMBUSTION PRESSURE LIMITATION
Abstract
The paper features simulation of the operation parameters of the high boosted 12-cylinder medium-speed diesel engine with cylinder bore 185 mm and stroke 285 mm having the break mean effective pressure 2.7 MPa at the rated operation mode. Since the maximum combustion pressure exceeded the limiting value of 22 MPa, the possibilities of its reduction using the turbine bypass of the exhaust gases and retarding of the ignition advance angle were analyzed. A combination of these two methods was chosen, in which the maximum combustion pressure decreased from 30 to 22 MPa and the minimal growth of the brake specific effective fuel consumption was obtained. The brake specific effective fuel consumption increased by 5 g/kWh, though due to a high mechanical efficiency of the high boosted diesel engine, it had a low value of 190 g/kWh.
About the Authors
Alexey V. Krigulsky
MADI
Russian Federation
Russian Federation
undergraduate
Vladislav . Kremnev
MADI
Russian Federation
Russian Federation
undergraduate
Vladimir V. Sinyavsky
MADI
Russian Federation
Russian Federation
Ph.D., associate professor
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