IMEP Estimation from Instantaneous Crankshaft Torque Variation

900617

02/01/1990

Event
International Congress & Exposition
Authors Abstract
Content
Crankshaft torque fluctuation has been theoretically analyzed and possible sources of error have been reviewed in the cases of determining the indicated mean effective pressure (Pmi) from measurement of the flywheel angular-speed fluctuation.
The specific objective of this study was to develop a new approach to determine Pmi from the crankshaft torque of a SI engine, and it has successfully proven that using an appropriate data processing for the angular-speed fluctuation, Pmi in low- to medium-speed ranges can be estimated with very high accuracy in terms of 99% or higher coefficient of correlation to the in-cylinder pressure sensor.
Meta TagsDetails
DOI
https://doi.org/10.4271/900617
Pages
15
Citation
lida, K., Akishino, K., and Kido, K., "IMEP Estimation from Instantaneous Crankshaft Torque Variation," SAE Technical Paper 900617, 1990, https://doi.org/10.4271/900617.
Additional Details
Publisher
Published
Feb 1, 1990
Product Code
900617
Content Type
Technical Paper
Language
English