Efficient Exhaust Silencers for Downsized Gasoline Engines J. Eberspächer GmbH and Company KG

Format:

Conference/Event

Author/Creator:

Krueger, Krueger, author.

Contributor:

Conrath, Matthias

Pommerer, Michael

Conference Name:

7th International Styrian Noise, Vibration & Harshness Congress: The European Automotive Noise Conference (2012-06-13 : Graz, Austria)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2012

Summary:

In recent years, the ANC technology was adapted for intake andexhaust systems on several passenger vehicles with a variety ofdiesel and gasoline engines. In these predevelopment activities,the active components (actuators, electronic hardware and software)were rigorously improved and its durability professionallyvalidated leading to an increased system performance even undervery harsh conditions. Depending on the customer targets, thisyielded several benefits when compared to conventional exhausts.For example, a passive conventional dual exhaust system of a highlyefficient 4-cylinder gasoline engine could be replaced by an activesingle exhaust line without compromising on the acoustic targetsbut saving a considerably amount of design space and weight. Inparticular, the space advantage can be utilized to createinnovative exhaust layouts.To support future downsizing of engines, for example, anultra-compact exhaust layout is proposed. By concentrating allparts of the exhaust close to the engine, e.g., within the enginebay, further space in the underbody of a vehicle is released andcan be used for installing other equipment (e.g., batteries inhybrid electric vehicles) or optimizing underbody flow conditions.Consequently, the active exhaust technology leads to an overalloptimization of the vehicle design and could eventually support aneven lower CO₂ emission of future vehicles with downsized andhybrid engines

Notes:

Vendor supplied data

Publisher Number:

2012-01-1563

Access Restriction:

Restricted for use by site license