Predicting the Emissions and Performance Characteristics of a Wankel Engine

Guido A. Danieli; Colin R. Ferguson; John B. Heywood; James C. Keck

doi:10.4271/740186

1974-02-01

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.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Digital $33.00 Print $33.00

Preview Document

We also recommend:

Standards

SAE MOBILUS®

Publications

News

Events

Professional Development

A World in Motion (K-12)

Participate with SAE

SAE Membership

Donate

Predicting the Emissions and Performance Characteristics of a Wankel Engine 740186

SAE MOBILUS