Incorporating Thermo- and Aerodynamic Losses into Compressor Models for Real-Time Applications Robert Bosch GmbH

Format:

Conference/Event

Author/Creator:

Meddahi, Meddahi, author.

Contributor:

Chamaillard, Yann

Charlet, Alain

Fleck, Christian

Conference Name:

SAE 2015 World Congress & Exhibition (2015-04-21 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2015

Summary:

AbstractCompressor models play a major role as they define the boost pressure in the intake manifold. These models have to be suitable for real-time applications such as control and diagnosis and for that, they need to be both accurate and computationally inexpensive. However, the models available in the literature usually fulfill only one of these two competing requirements. On the one hand, physics-based models are often too complex to be evaluated on line. On the other hand, data-based models generally suffer insufficient extrapolation features.To combine the merits of these two types of models, this work presents an extended approach to compressor modeling with respect to thermo- and aerodynamic losses. In particular, the model developed by Martin and others [1] is augmented to explicitly incorporate friction, incidence and heat transfer losses. The resulting model surpasses the extrapolation properties of data-based models and facilitates the generation of extended lookup tables.In conclusion, the three main advantages of the developed approach are first, a high fitting quality resulting in accurate lookup tables for the real-time application, second, little measurement data are required and third, the identification process supports the high model accuracy

Notes:

Vendor supplied data

Publisher Number:

2015-01-1715

Access Restriction:

Restricted for use by site license