Improving Diesel Sound Quality on Engine Level and Vehicle Level - A Holistic Approach HEAD acoustics GmbH

Format:

Conference/Event

Author/Creator:

Sellerbeck, Philipp, author.

Conference Name:

SAE 2007 Noise and Vibration Conference and Exhibition (2007-05-15 : St. Charles, Illinois, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2007

Summary:

Diesel impulsiveness (so called Diesel knocking) present in the cabin of diesel vehicles is perceived as unpleasant because of its impulsive time structure. JD Power data clearly show the customers preference of vehicles with little Diesel knocking over those with severe knocking. Corresponding objective descriptors that reflect the customers' perception are introduced.The occurrence of such noise patterns is influenced by the combustion process itself as well as by all excited mechanical components within the power train. Further the transfer characteristics of the engine structure and various vehicle noise paths do contribute to a poor Diesel Sound Quality. It is essential that all these factors have to be considered in combination. This paper provides an overview about suitable methods and technologies, including Binaural Transfer Path Analysis and Synthesis. The potential of the approach is demonstrated by an example. Investigations are carried out on the complete vehicle and on the engine test bench, and principal improvements on engine level and on vehicle level are derived

Notes:

Vendor supplied data

Publisher Number:

2007-01-2372

Access Restriction:

Restricted for use by site license