| Cylinder Pressure Reconstruction and its Application to Heat Transfer Analysis |
| Journal & Paper No: |
| SAE 2004-01-0922 |
| Authors: |
| Pin Zeng, Dennis N. Assanis |
| Abstract: |
In this paper, a new method for cylinder pressure
reconstruction is proposed based on the concept of a
dimensionless pressure curve in the frequency domain.
It is shown that cylinder pressure profiles, acquired over
a wide range of engine speeds and loads, exhibit
similarity. Hence, cylinder pressure traces collapse into
a set of dimensionless curves within a narrow range
after normalization in the frequency domain. The
dimensionless pressure traces can be described by a
curve-fit family, which can be used for reconstructing
pressure diagrams back into the time domain at any
desired condition. The accuracy associated with this
method is analyzed and its application to engine heat
transfer analysis is demonstrated. |
| Paper: P2004_02.PDF |
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2009
University of Michigan