A Reduced Order Model for a Passenger Car Turbo Charging System and Application to Engine Output Torque Profile Control

2015-01-1981

09/01/2015

Event
JSAE/SAE 2015 International Powertrains, Fuels & Lubricants Meeting
Authors Abstract
Content
Downsizing engines with a turbocharging system have been widely applied to passenger cars to improve fuel economy. Engine torque response to accelerator operation is one of important features in addition to steady state performance of the system. Torque profile management for turbocharged internal combustion engines is one of required technologies.
A turbocharging system for a car is a system with a positive feedback loop in which compressed air drives the compressor after the combustion process. A reduced order model was derived for the charging system. Pressure ratio of a compressor is proportional to square of turbine speed and the turbine speed is a first order delay system to throttle opening in the model.
Model structure was designed from mathematical equations that describe turbine and compressor works. Model parameters were identified from measured data. An output torque profile control strategy based on the derived model is investigated.
Meta TagsDetails
DOI
https://doi.org/10.4271/2015-01-1981
Pages
8
Citation
Togai, K., and Fujinaga, N., "A Reduced Order Model for a Passenger Car Turbo Charging System and Application to Engine Output Torque Profile Control," SAE Technical Paper 2015-01-1981, 2015, https://doi.org/10.4271/2015-01-1981.
Additional Details
Publisher
Published
Sep 1, 2015
Product Code
2015-01-1981
Content Type
Technical Paper
Language
English