COMMON RAIL INJECTOR LEAK TESTING Scholz, Celestýn; Starý, Petr
Journal of Middle European Construction and Design of Cars,
12/2013, Volume:
11, Issue:
3
Journal Article
Peer reviewed
Open access
SHRNUTÍ
Članek popisuje obecne možnosti zjišťovani vnitřni a vnějši těsnosti jednotlivych časti injektoru pro vysokotlaky palivovy system Common Rail. Na konkretnim injektoru Bosch pro motor Cummins ...se presentuje vlastni metoda měřeni těsnosti trysky, kuličkoveho ventilu a vnitřni časti tyčky ovladajici jehlu trysky. Testovani teto vnitřni časti injektoru je důležite pro ověřeni vlivu uprav, ktere jsou potřebne pro měřeni a vyzkum pohybu jehly trysky.
In this work, we present an original numerical approach developed to evaluate injection performances of a new injection system (More
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) designed for siderurgic applications. The system ...exploits a supersonic jet of oxygen to inject carbon particles into the slag. A precise characterization of the injection process by experimental analysis is extremely difficult and costly because of the complex chemico-physical mechanisms controlling transport, burn-out and devolatilization of carbon particles inside the oxidizing, high temperature environment of the electric arc furnace. In this work, we use numerical simulations to test and characterize injector performances for conditions corresponding to a 120
ton capacity electric furnace. We exploit the best available, state of the art numerical techniques to characterize the fluid-dynamics and chemico-thermal environment seen by carbon particles, which we couple to
ad hoc research tools (Lagrangian tracking routines and complex chemistry schemes) to reproduce carbon consumption due to thermally and chemically controlled kinetics. These data are used to analyse the factors controlling injector performances, to identify a most critical configuration of the injector in the furnace and to obtain a conservative estimate of the injection yield of carbon particles. The performances of the injection device are evaluated in two different geometries and for three different types of carbon particles. Numerical results confirm that the supersonic injection promotes high injection yields: (i) by decreasing drastically the residence time of carbon particles inside the furnace and (ii) by modifying the hot reacting environment seen by carbon particles.
In this review, the essential aspects of gas chromatography are discussed. The article begins with a very brief discussion of basic chromatographic theory, followed by an in-depth treatment of the ...instrumentation involved. This discussion starts a discussion of chromatographic columns, the distinctions among which are used to classify the different modes of gas chromatography. Following this is an in-depth discussion of instrumentation, the treatment of which follows the classification by column types. This discussion includes the operational principles and applications of injectors, detectors and data handling systems. In conclusion, a listing of suggested further reading is provided.
Die präzise Kraftstoffdosierung spielt bei der Benzin-Direkteinspritzung eine wesentliche Rolle im Hinblick auf Abgasemissionen und Verbrauch. Fertigungsbedingte Injektor-zu-Injektor-Streuungen und ...Bauteildriften müssen ausgeglichen werden. In dieser Arbeit wird ein neuartiges Kalibrierungsverfahren für Magnet-Injektoren vorgestellt, das den während der Kraftstoffeinspritzung emittierten Körperschall zur
Övrig anknytning: Liedbeck, Alarik
Other affiliation: Liedbeck, Alarik
AB Bofors Nobelkrut. Nitroglycerinfabrik. Man ser nitreringsapparaten med sina kylspiraler av bly. I apparaten sitter insatt den ...glycerininjektor, som Alarik Liedbeck på sin tid konstruerade. I taket till vänster hänger glycerinbehållaren. Apparaten användes för 42 kg glycerin per sats.
Övrig anknytning: Liedbeck, Alarik
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