Peak Pressure Position Estimation from Structure-Borne Sound Ruhr-Universitäat Bochum

Format:

Conference/Event

Author/Creator:

Villarino, Ruben, author.

Conference Name:

SAE 2005 World Congress & Exhibition (2005-04-11 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2005

Summary:

Combustion control strategies based on the peak pressure position (PPP) can be used to optimize the engine efficiency in a torque producing sense. Though the methods are easy to implement, the direct acquisition of the in-cylinder pressure requires sensors that are expensive and have a reduced lifetime. This paper addresses the problem of obtaining reliable PPP estimates with structure-borne sound signals from accelerometers mounted on the engine's surface. Measurement data collected from a four cylinder SI test bed engine are used to validate the proposed approach. It is observed that, compared to the amplitude, the position of the pressure maximum can be robustly estimated with moderate sampling rates. The results are improved by combining several accelerometers into a multichannel signal

Notes:

Vendor supplied data

Publisher Number:

2005-01-0040

Access Restriction:

Restricted for use by site license