A Parametric Study of SI Engine Efficiency and of Energy and Availability Losses Using a Cycle Simulation

910005

01/01/1991

Event
Autotechnologies Conference
Authors Abstract
Content
A parametric study of SI engine efficiency was carried out using a two-zone cycle simulation. The simulation models are first validated and then used to study the effects of different engine function parameters on the engine efficiency and on energy and availability losses. The following parameters are considered in this study: combustion duration, spark timing, spark plug position, combustion chamber heat isolation and compression ratio. The availability balance has been developed with the purpose of recovering the energy lost. It indicates the percentage of energy that could be recovered out of the total energy lost (in the exhaust system, for instance). This study requires detailed information on the gas state (temperature, pressure) and on the temperatures of the combustion chamber walls and of the cylinder head. Some of these temperatures are almost impossible to measure experimentally with the material available at this time. That is why we resort to cycle simulation.
Meta TagsDetails
DOI
https://doi.org/10.4271/910005
Pages
14
Citation
Zhecheng, L., Brun, M., and Badin, F., "A Parametric Study of SI Engine Efficiency and of Energy and Availability Losses Using a Cycle Simulation," SAE Technical Paper 910005, 1991, https://doi.org/10.4271/910005.
Additional Details
Publisher
Published
Jan 1, 1991
Product Code
910005
Content Type
Technical Paper
Language
English