Exhaust Backpressure Estimation for an Internal Combustion Engine with a Variable Geometry Turbo Charger

2009-01-0732

04/20/2009

Event
SAE World Congress & Exhibition
Authors Abstract
Content
Exhaust gas recirculation (EGR) is one of the key approaches applied to reduce emissions for an internal combustion engine. Recirculating a desired amount of EGR requires accurately estimating EGR mass flow. This can be calculated either from the gas flow equation of an orifice, or from the difference between charge air mass flow and fresh air mass flow. Both calculations need engine exhaust pressure as an input variable. This paper presents a method to estimate exhaust pressure for a variable geometry turbo charged diesel engine. The method is accurate and simple to fit production ECU application, therefore, saves cost of using a physical sensor.
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DOI
https://doi.org/10.4271/2009-01-0732
Pages
7
Citation
Wang, Y., and Gangopadhyay, A., "Exhaust Backpressure Estimation for an Internal Combustion Engine with a Variable Geometry Turbo Charger," SAE Technical Paper 2009-01-0732, 2009, https://doi.org/10.4271/2009-01-0732.
Additional Details
Publisher
Published
Apr 20, 2009
Product Code
2009-01-0732
Content Type
Technical Paper
Language
English