Der neue BMW-Sechszylinder-Dieselmotor mit Stufenaufladung

Steinparzer, Fritz; Stütz, Wolfgang; Kratochwill, Helmut; Mattes, Wolfgang

doi:10.1007/bf03226736

Cited by 5 publications

(8 citation statements)

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“…It has been demonstrated by the supercharging systems used recently in the mass-produced cars with Diesel engines made by BMW and Opel, very similar in design and described with the term of "Twin-Turbo". In these systems, two turbochargers of different size have been used but -as opposed to the sequential turbocharging -operating in series at certain range of engine speeds [12,14].…”

Section: Wstępmentioning

confidence: 99%

“…Wskazują na to zastosowane ostatnio w seryjnie wytwarzanych samochodach osobowych z silnikami o ZS firm BMW i Opel układy doładowania, bardzo zbliżone konstrukcyjnie i określane terminem "Twin-Turbo". W układach tych również wykorzystane zostały dwie turbosprężarki różnej wielkości, lecz w przeciwieństwie do doładowania zakresowego pracujące w pewnym zakresie prędkości obrotowych silnika również w układzie szeregowym [12,14].…”

Section: Problem Descriptionunclassified

“…Wprowadzając współczynnik udziału wydatku sprężarki pierwszego zakresu W p równe (12), ilość powietrza przepływającego przez każdą sprężarkę wyniesie ( 13) i (14).…”

Section: Efficiency Of a Turbine Setunclassified

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Theoretical analysis of cooperation of a turbocharger with a sequentially turbocharged engine

Danilecki¹

2009

Combustion Engines

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The paper presents fundamentals characterising the operation of turbochargers and the dependencies essential for the calculation (the use of balance equations of a turbocharger this purpose) of the total efficiency of a compressor set with respect to the power balance of the respective devices of a turbine. For the assumed conditions of the engine operation – an optimum power distribution has been carried out on the basis of a theoretical analysis as far as the total efficiency is concerned in the compressor set and in the turbine set of a supercharging device. The required pressure drops in the turbine, essential to ensure the power in the compressor have been carried out with respect to the efficiency of each device.

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Section: Wstępmentioning

confidence: 99%

Section: Problem Descriptionunclassified

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Theoretical analysis of cooperation of a turbocharger with a sequentially turbocharged engine

Danilecki¹

2009

Combustion Engines

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“…Hence, in order to avoid a stepwise change of the torque in the initial phase of the switching, a reduction of the fuel dose is necessary. In this way, the switching is unnoticeable for the driver [28].…”

Section: Multistage Turbocharging Systemsmentioning

confidence: 99%

“…Dlatego, aby uniknąć skokowej zmiany momentu obrotowego w pierwszej fazie przełączania, konieczna jest redukcja dawki wtrysku paliwa. Dzięki temu proces przełączania następuje w sposób zupełnie niezauważalny dla kierowcy [28]. Układ ten sprawdzony został z powodzeniem w silniku wyczynowej wersji BMW X5 podczas Rajdu Dakar w 2004 r., a następnie zastosowany w sześciocylindrowym silniku o ZS, znanym m.in.…”

Section: Multistage Turbocharging Systemsunclassified

Trends in the development of turbocharging systems in automotive vehicles

Danilecki¹

2008

Combustion Engines

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The application of turbocharging systems results in serious problems related to the delivery of appropriate amount of air needed to entirely burn the supplied dose of fuel. This problem is particularly relevant for non-adjustable turbocharging systems (constant geometry turbines). The improvements of the turbocharging systems in compression ignition engines may be implemented through such solutions as two stage or sequential turbocharging that show significant benefits as opposed to a single stage variable turbocharger geometry (VGT) turbocharging. The paper presents adjustable two stage turbocharging and sequential turbocharging finding application in serially manufactured vehicles. The assessment of the properties of these solutions and attempts to describe the trends in the further development of the turbocharging systems have been made. With this background, the results of own research of the author have been presented performed on a SW 680 sequentially turbocharged engine.

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Verbrennungsmotoren

Tschöke¹,

Mollenhauer²

2014

Dubbel

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Der neue BMW-Sechszylinder-Dieselmotor mit Stufenaufladung

Cited by 5 publications

References 0 publications

Theoretical analysis of cooperation of a turbocharger with a sequentially turbocharged engine

Theoretical analysis of cooperation of a turbocharger with a sequentially turbocharged engine

Trends in the development of turbocharging systems in automotive vehicles

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