It was shown in this article that innovative air management strategy was successfully applied to a turbocharged diesel aircraft engine. Operating the turbocharged diesel aircraft engines with closed waste-gate up to the critical altitude makes possible to attain superior BMEP values resulting in very high power-to-engine displacement ratios. It was shown that proposed air management strategy is not only capable of compensating for lean operation of the diesel engine but it also enables attaining much higher BMEP values compared to turbocharged gasoline engines especially at lower altitude operation. However, boost pressure decreases towards the critical altitude when applying the proposed air management strategy resulting in proportional reduction of the engine power if air-fuel ratio is maintained at approximately constant value. If maximum operating altitude of the engine is attained before maximum turbocharger speed is reached, the proposed control strategy enables very simple and reliable engine controlling, since waste-gate acts only as an additional safety device and not as a part of the control strategy. However, care should be devoted when selecting air management components, since adequate matching of engine, intercooler, and turbocharger is crucial for taking the full advantage of the proposed air management strategy. Improved engine performance up to the critical altitude resulting from the application of the proposed air management strategy does not lead in performance penalty above the critical altitude, if such operating region could not be avoided, since it is still possible to control the engine by opening the waste-gate above the critical altitude if required.


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    Title :

    Innovative approach to air management strategy for turbocharged diesel aircraft engines


    Additional title:

    Innovative Näherung zur Luftraum-Mannagementstrategie für Turbo-Diesel-Flugzeugmotoren


    Contributors:
    Katrasnik, T. (author) / Trenc, F. (author)


    Publication date :

    2012


    Size :

    14 Seiten, 7 Bilder, 2 Tabellen, 25 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English






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    REINERS, N. M. / SCHWAB, W. D. | SAE Technical Papers | 1957


    Cummins turbocharged diesel engines

    Reiners, N.M. / Schwab, W.D. | Engineering Index Backfile | 1957


    TURBOCHARGED DIESEL ENGINES AT WORK

    LUX, W. J. | SAE Technical Papers | 1958