Thermodynamic Potential of Electrical Turbocharging for the Case of Small Passenger Car ICE under Steady Operation

2017-01-0526

03/28/2017

Features
Event
WCX™ 17: SAE World Congress Experience
Authors Abstract
Content
The proposed paper deals with thermodynamic optimization of highly flexible ICE (variable compression ratio, intake/exhaust VVA) while comparing e-turbocharging concept with classical one. The e-turbocharging approach is based on idea that compressor/turbine has its own electric machine (motor/generator) and that additional electric energy can be supplied/attached from/to engine crank train. Hence it allows independent control of compressor/turbine. On the other hand, classical approach is based on a standard mechanical connection between turbine and compressor. The whole system (flexible engine + boost device) is optimized under steady operation – low load (BMEP of 4 bar), medium load (BMEP of 13 bar), high load (BMEP of 30, 25 and 18 bar) and maximum load are considered. Moreover, 3 combustion concepts are considered – classical SI and CI, and ideal RCCI. Sensitivity study of selected parameters is performed: e.g., efficiency of electric machine(s), HP exhaust manifold volume. All the results are achieved by means of simulation using 0-D/1-D SW tool. The data are analyzed and general conclusions are drawn while focusing on thermodynamic potential of e-turbocharging concept under steady operation.
Meta TagsDetails
DOI
https://doi.org/10.4271/2017-01-0526
Pages
11
Citation
Vitek, O., and Macek, J., "Thermodynamic Potential of Electrical Turbocharging for the Case of Small Passenger Car ICE under Steady Operation," SAE Technical Paper 2017-01-0526, 2017, https://doi.org/10.4271/2017-01-0526.
Additional Details
Publisher
Published
Mar 28, 2017
Product Code
2017-01-0526
Content Type
Technical Paper
Language
English