In marine propulsion systems there may occur operating conditions in which speed is severely reduced while the mean effective pressure remains constant. Tests were carried out on a medium-speed four-stroke engine with a high mean effective pressure and using both constant-pressure and impulse turbocharging in which speed was reduced by up to 35 % at constant mep. The thermal load of the components surrounding the combustion chamber proved to be the major problem not to mention the known difficulty of compressor surging. The outlet valve is in particular danger. The trapped air/fuel ratio gives a primary indication, of the temperature changes to be expected.
The thermal load of highly supercharged four-stroke engines at reduced speed
Die thermische Belastung von hochaufgeladenen Viertakt-Dieselmotoren bei reduzierter Drehzahl
1975
33 Seiten, 11 Bilder
Aufsatz (Konferenz)
Datenträger
Englisch
First ship with highly supercharged engines
Engineering Index Backfile | 1954
Two-stroke-cycle engines with unsymmetrical control diagrams -- Supercharged engines
Engineering Index Backfile | 1939
|First ship with highly supercharged engines
Engineering Index Backfile | 1954
Emerald Group Publishing | 1932
|Engineering Index Backfile | 1932
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