Divided-Chamber Diesel Engine, Part II: Experimental Validation of a Predictive Cycle-Simulation and Heat Release Analysis 820274
In this study, a set of performance and emissions data, obtained from a single-cylinder divided-chamber automotive diesel engine over the normal engine operating range, is described and analyzed. The data are used to evaluate a computer simulation of the engine's operating cycle, described in a companion paper, which predicts the properties of gases inside the engine cylinder throughout the cycle, and engine efficiency, power and NOx emissions. Satisfactory agreement between predictions and measurements is obtained over most of the engine's operating range.
The characteristics of the experimental pre- and main-chamber pressure versus crank angle data are then examined in detail. A heat release analysis appropriate for divided-chamber diesel engines is developed and used to obtain heat release rate profiles through the combustion process. A useful method for estimating the heat transfer during combustion from the heat release profile and the heating value of the injected fuel is developed and applied to this data base.
Citation: Kort, R., Mansouri, S., Heywood, J., and Ekchian, A., "Divided-Chamber Diesel Engine, Part II: Experimental Validation of a Predictive Cycle-Simulation and Heat Release Analysis," SAE Technical Paper 820274, 1982, https://doi.org/10.4271/820274. Download Citation
Raja T. Kort, S. Hossein Mansouri, John B. Heywood, Agop Ekchian
Sloan Automotive Laboratory Massachusetts Institute of Technology Cambridge, MA
SAE International Congress and Exposition
Diesel Engine Combustion, Emissions, and Particulates-P-107, SAE 1982 Transactions-V91-A