Modeling of Direct Injection Diesel Engine Fuel Consumption

971142

02/24/1997

Event
SAE International Congress and Exposition
Authors Abstract
Content
Due to their inherent high efficiency and the ease of starting once the engine is hot, turbocharged direct injection (TDI) diesel engines have emerged as one of the contending powerplants for PNGV hybrid vehicles. The interest in applying diesel engines in hybrid vehicles has prompted the modeling of direct injection diesel engine fuel consumption. The empirical equation developed in this study, which models engine friction and indicated efficiency as functions of engine operating speed and load, shows excellent agreement with test data gathered from public sources. The engine speed dependence of the friction and indicated efficiency are determined by fitting available data. Several assumed load dependences are considered. (If public data were available on engine cylinder pressure by crank angle as a function of engine speed and load, the load dependence could be determined empirically.) The resulting model parameters for the diesel engines modeled and comparisons with test data are presented and discussed.
Meta TagsDetails
DOI
https://doi.org/10.4271/971142
Pages
15
Citation
Wu, W., and Ross, M., "Modeling of Direct Injection Diesel Engine Fuel Consumption," SAE Technical Paper 971142, 1997, https://doi.org/10.4271/971142.
Additional Details
Publisher
Published
Feb 24, 1997
Product Code
971142
Content Type
Technical Paper
Language
English