A Large Scale Mixing Model for a Quiescent Chamber Direct Injection Diesel 961040
The methodology for predicting the transient mixing rate is presented for a direct injection, quiescent chamber diesel. The mixing process is modeled as a zero-dimensional, large-scale phenomena which accounts for injection rate, cylinder geometry, and engine operating condition. As a demonstration, two different injection schemes were investigated for engine speeds of 1600, 2100, and 2600 rpm. In the first case, the air-fuel ratio was fixed while the injection rate was allowed to vary, but for the second case, the injection duration was fixed and the air-fuel ratio was allowed to vary. For the former case, the resulting mixing rate was also compared with the experimentally determined fuel burning rate. These two quantities appeared to be correlated in some manner for the various engine speeds under investigation.
Citation: Schihl, P., Bryzik, W., and Atreya, A., "A Large Scale Mixing Model for a Quiescent Chamber Direct Injection Diesel," SAE Technical Paper 961040, 1996, https://doi.org/10.4271/961040. Download Citation
Author(s):
Peter Schihl, Walter Bryzik, Arvind Atreya
Affiliated:
US Army TARDEC
Pages: 9
Event:
International Congress & Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Multidimensional Engine Modeling-SP-1169, Modeling of SI and Ci Engines-SP-1168, The Diesel Engine-PT-109, SAE 1996 Transactions - Journal of Engines-V105-3
Related Topics:
Air / fuel ratio
Scale models
Engine cylinders
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