•  
  •  
 

Corresponding Author

M. Awad, M.

Subject Area

Mechanical Power Engineering

Article Type

Original Study

Abstract

The present experimental analysis is carried out to investigate the effect of connecting passage shape and flame initiation point on combustion characteristics in a homogeneous charge torch ignition engine. The main part of experimental program is concerned with the optimization of the combustion process in such engine. This can extend the effective lean burn limit in spark ignition engine. Two different passage shape and three different spark gap projection are used in this study. Engine performance and combustion characteristics at different engine operating variables are studied. The burning rate for the investigated geometry at different equivalence ratio is determined from the measured cylinder pressure vs crankangle diagram Engine cyclic variations are also considered. The obtained results shows that engine performance and combustion characteristics are influenced by these design parameters. Convergent-divergent passage shape and extended spark gap projection appear beneficial. Improved fuel economy, enhancing the combustion rate and extended the effective lean burning limit are recorded.

Share

COinS