High charge-air pressure, turbochargers with a high overall efficiency and exhaust systems which contribute little towards utilization of the exhaust pulses at part load, result in there being a shortage of charge-air pressure at reduced engine speed, e.g. when fixed-pitch propellers are operating at part load. To overcome this deficiency there are a number of possible measures, such as auxiliary blowers, turbochargers with auxiliary drive, pulse charging at part load, blowing off air or exhaust gas at full load, provision of a bypass from compressor to turbine - with or without heat exchanger - variable equivalent nozzle area of the turbines, 'sequential' turbocharging, as well as variable or fixed valve timings optimized for part load with increased charge-air pressure. The results, presented herein, of an exhaustive thermodynamic investigation should enable the most suitable solution to be chosen for given conditions.
Part-load operation of very high turbocharged four-stroke marine diesel engines
Teillastbetrieb sehr hoch aufgeladener Viertakt-Schiffsdieselmotoren
1983
21 Seiten, 14 Bilder, 12 Quellen
Aufsatz (Konferenz)
Datenträger
Englisch
Part-loaded operation of very high turbocharged four-stroke marine diesel engines
Kraftfahrwesen | 1983
|Load acceptance of turbocharged Diesel engines
Kraftfahrwesen | 1978
|Notes on turbocharged two-stroke cycle diesel engines
Engineering Index Backfile | 1956
|NOTES ON TURBOCHARGED TWO-STROKE CYCLE DIESEL ENGINES
SAE Technical Papers | 1956
|