Rainer Diez

Das Abgassystem für den BMW- Reihensechszylinder-Ottomotor mit Twin-Turbo-Technik

Die Turboaufladung konnte eine Schlusselrolle bei der Entwicklung zukunftsweisender Ottomotoren spielen. Neue Laderkonzepte leisten einen wichtigen Beitrag zur Losung des Zielkonflikts zwischen dem Wunsch nach hoherer Motorleistung und groserer Fahrdynamik und der Forderung nach verbesserter Wirtschaftlichkeit moderner Automobile. Nach Vorgaben von BMW und in enger Zusammenarbeit mit verschiedenen Partnerunternehmen hat Boysen das Abgassystem fur den 3,0-l-Reihensechszylinder-Ottomotor mit Twin-Turbo-Technik entwickelt. Im Zusammenhang mit der Integration der beiden Turbolader stand der Abgassystem-Spezialist vor neuen Herausforderungen hinsichtlich Strukturdynamik, Stromungstechnik und Akustik.

Higher efficiency with cylinder-bank comprehensive exhaust manifold

In close interdisciplinary cooperation with BMW Group, Boysen has developed an air-gap-insulated exhaust manifold that encompasses both banks of the 4.4 I V8 spark-ignition twin turbo engine of the BMW X5 M and BMW X6 M. The manifold merges the exhaust gas flow from the cylinders of the left-hand and right-hand cylinder banks in opposing pairs, thus optimising gas exchange. Due to improvements in response, torque and power characteristics of the engine, the cylinder-bank comprehensive exhaust manifiold helps achieve high fuel efficiency.

Effizienzsteigerung durch Zylinderbank-Übergreifenden Krümmer

In enger interdisziplinarer Zusammenarbeit mit der BMW Group hat Boysen fur den 4,4-l-V8-Ottomotor mit Twin-Turbo-Technologie des BMW X5 M und BMW X6 M einen Zylinderbank-ubergreifenden luftspaltisolierten Krummer entwickelt. Der Krummer fuhrt die Abgase aus jeweils einem Zylinder der linken und der rechten Bank paarweise zusammen und optimiert auf die Weise den Ladungswechsel. Durch die Verbesserung des Ansprechverhaltens, der Drehmoment- und der Leistungscharakteristik tragt der bankubergreifende Krummer zu einem effizienten Kraftstoffeinsatz bei.

Das Abgassystem für den BMW-Reihensechszylinder-Ottomotor mit Twin-Turbo-Technik

Turbocharging is likely to play a key role in the development of trend-setting spark-ignition engines of the future. New turbocharger concepts are making a major contribution towards solving the conflict of objectives between the desire for higher engine output and greater driving dynamics on the one hand and the demand for improved fuel economy in modern vehicles on the other. Based on BMW specifications and in close cooperation with various partner companies, Boysen has developed the exhaust system for the 3.0-l six-cylinder inline spark-ignition engine with twin turbo technology. Integrating the two turbochargers presented new challenges for the exhaust system specialist in terms of structural dynamics, flow technology and acoustics.Turbocharging is likely to play a key role in the development of trend-setting spark-ignition engines of the future. New turbocharger concepts are making a major contribution towards solving the conflict of objectives between the desire for higher engine output and greater driving dynamics on the one hand and the demand for improved fuel economy in modern vehicles on the other. Based on BMW specifications and in close cooperation with various partner companies, Boysen has developed the exhaust system for the 3.0-l six-cylinder inline spark-ignition engine with twin turbo technology. Integrating the two turbochargers presented new challenges for the exhaust system specialist in terms of structural dynamics, flow technology and acoustics.

The exhaust system for the BMW six-cylinder inline spark-ignition engine with twin turbo technology

Turbocharging is likely to play a key role in the development of trend-setting spark-ignition engines of the future. New turbocharger concepts are making a major contribution towards solving the conflict of objectives between the desire for higher engine output and greater driving dynamics on the one hand and the demand for improved fuel economy in modern vehicles on the other. Based on BMW specifications and in close cooperation with various partner companies, Boysen has developed the exhaust system for the 3.0-l six-cylinder inline spark-ignition engine with twin turbo technology. Integrating the two turbochargers presented new challenges for the exhaust system specialist in terms of structural dynamics, flow technology and acoustics.Turbocharging is likely to play a key role in the development of trend-setting spark-ignition engines of the future. New turbocharger concepts are making a major contribution towards solving the conflict of objectives between the desire for higher engine output and greater driving dynamics on the one hand and the demand for improved fuel economy in modern vehicles on the other. Based on BMW specifications and in close cooperation with various partner companies, Boysen has developed the exhaust system for the 3.0-l six-cylinder inline spark-ignition engine with twin turbo technology. Integrating the two turbochargers presented new challenges for the exhaust system specialist in terms of structural dynamics, flow technology and acoustics.

The exhaust system for the BMW six-cylinder inline spark-ignition engine with twin turbo technology@@@Das Abgassystem für den BMW-Reihensechszylinder-Ottomotor mit Twin-Turbo-Technik

Turbocharging is likely to play a key role in the development of trend-setting spark-ignition engines of the future. New turbocharger concepts are making a major contribution towards solving the conflict of objectives between the desire for higher engine output and greater driving dynamics on the one hand and the demand for improved fuel economy in modern vehicles on the other. Based on BMW specifications and in close cooperation with various partner companies, Boysen has developed the exhaust system for the 3.0-l six-cylinder inline spark-ignition engine with twin turbo technology. Integrating the two turbochargers presented new challenges for the exhaust system specialist in terms of structural dynamics, flow technology and acoustics.Turbocharging is likely to play a key role in the development of trend-setting spark-ignition engines of the future. New turbocharger concepts are making a major contribution towards solving the conflict of objectives between the desire for higher engine output and greater driving dynamics on the one hand and the demand for improved fuel economy in modern vehicles on the other. Based on BMW specifications and in close cooperation with various partner companies, Boysen has developed the exhaust system for the 3.0-l six-cylinder inline spark-ignition engine with twin turbo technology. Integrating the two turbochargers presented new challenges for the exhaust system specialist in terms of structural dynamics, flow technology and acoustics.

Modular exhaust aftertreatment system for a six-cylinder inline spark-ignition engine

Boysen helped to develop a modular exhaust aftertreatment system for the six-cylinder inline spark-ignition engines from BMW. The assembly comprises innovative tubular manifolds and close-coupled catalytic converters. The flexible design allows the manifold/catalytic converter unit to be easily adapted to the installation situation in different vehicle series. An extensive common parts strategy enabled considerable cost savings to be achieved.

Modular aufgebautes Abgasreinigungssystem eines Reihensechszylinder-Ottomotors

Boysen hat fur die Reihensechszylinder-Ottomotoren von BMW ein modular aufgebautes Abgasreinigungssystem mitentwickelt. Die Baugruppe besteht aus innovativen Rohrkrummern und motornahen Katalysatoren. Die Konzeption ist so flexibel angelegt, dass sich die Einheit von Krummer und Katalysator mit geringem Aufwand an die Einbausituationen in unterschiedlichen Fahrzeugbaureihen anpassen lasst. Durch eine weitreichende Gleichteilestrategie konnten erhebliche Kosteneinsparungen erzielt werden.

The exhaust system of the BMW M5

The new BMW M5 is the world’s first high-performance sports saloon to be fitted with a high-revving V10 engine. For the 373 kW power unit, Boysen has developed a dual-line exhaust system consisting of two 5-into-1 equal-length tubular manifolds, two close-coupled and two underfloor metallic catalytic converters, a middle silencer and twin rear silencers. The complete system has been consistently optimised with regard to weight and backpressure and its gas dynamics have been tuned for maximum engine output and optimum torque.

Das Abgassystem des BMW M5

Der neue BMW M5 ist die erste leistungsstarke Serien-Sportlimousine der Welt mit einem V10-Zylinder-Hochdrehzahlmotor. Boysen hat fur den 373 kW starken Motor ein zweiflutiges Abgassystem entwickelt, bestehend aus zwei 5-in-1-Rohrfacherkrummern, je zwei motornahen und zwei Unterbodenkatalysatoren aus Metall, einem Mittel- und vier Nachschalldampfern. Das System ist konsequent gewichts- und gegendruckoptimiert und gasdynamisch auf maximale Motorleistung und optimales Drehmoment ausgelegt.