Dynamics of Combustion in a Diesel Engine Under the Influence of Air/Fuel Ratio

2000-01-0203

03/06/2000

Event
SAE 2000 World Congress
Authors Abstract
Content
The dynamic stage of combustion - the intrinsic process for pushing the compression polytrope away from the expansion polytrope to generate the indicator work output of a piston engine - was studied to reveal the influence of the air/fuel ratio on the effectiveness with which the fuel was utilized. The results of tests carried out for this purpose, using a 12 liter diesel engine, were reported last year [SAE 1999-01-0517]. Presented here is an analytic interpretation of the data obtained for part-load operation at 1200 and 1800 rpm. A solution is thus provided for an inverse problem: deduction of information on the dynamic features of the exothermic process of combustion from measured pressure record. Provided thereby, in particular, is information on the effectiveness with which fuel was utilized in the course of this process - a parameter reflecting the effect of energy lost by heat transfer to the walls. The results we obtained demonstrate the beneficial influence on its reduction attainable by lean combustion.
Meta TagsDetails
DOI
https://doi.org/10.4271/2000-01-0203
Pages
16
Citation
Oppenheim, A., Spektor, R., Sum, T., Kuhl, A. et al., "Dynamics of Combustion in a Diesel Engine Under the Influence of Air/Fuel Ratio," SAE Technical Paper 2000-01-0203, 2000, https://doi.org/10.4271/2000-01-0203.
Additional Details
Publisher
Published
Mar 6, 2000
Product Code
2000-01-0203
Content Type
Technical Paper
Language
English