Predicting the Emissions and Performance Characteristics of a Wankel Engine 740186
A performance model of a Wankel engine is developed which performs a leakage mass balance, accounts for heat transfer and flame quenching, and predicts the mass fraction burned as a function of chamber pressure. Experiments were performed on a production Wankel engine to obtain chamber pressure-time diagrams, and engine performance and emissions data. Model predictions of mass burned, global heat transfer, and hydrocarbon emission gave good agreement with measurements. Predictions of oxides of nitrogen are higher than measurements, especially at low loads. This is thought to be due to the adiabatic core gas assumption in the model. The need for a Wankel boundary layer study is identified.
Citation: Danieli, G., Ferguson, C., Heywood, J., and Keck, J., "Predicting the Emissions and Performance Characteristics of a Wankel Engine," SAE Technical Paper 740186, 1974, https://doi.org/10.4271/740186. Download Citation
Author(s):
Guido A. Danieli, Colin R. Ferguson, John B. Heywood, James C. Keck
Affiliated:
Department of Mechanical Engineering, Massachusetts Institute of Technology
Pages: 16
Event:
1974 Automotive Engineering Congress and Exposition
