Experimental and Computational Analysis of Different EGR Systems for a Common Rail Passenger Car Diesel Engine

F. Millo; C. V. Ferraro; M. Gianoglio Bernardi; S. Barbero; P. Pasero

doi:10.4271/2009-01-0672

2009-04-20

Experimental and Computational Analysis of Different EGR Systems for a Common Rail Passenger Car Diesel Engine 2009-01-0672

Different EGR system layouts (a Long Route, a Short Route, and a combination of the two) were evaluated by means of both numerical simulation and experimental tests.

In particular, a one-dimensional fluid-dynamic engine model was built in order to evaluate the potential of a Long Route EGR system as well as the potential of different EGR combinations between Long and Short Route.

By means of the one-dimensional model, used as a virtual test bench, the estimations of the NOx emissions, based on the Extended Zeldovich Mechanism (EZM), for the different solutions, were compared and valuable information for the calibration of the coordinated EGR LR, EGR SR and Variable Geometry Turbine (VGT) control systems was obtained.

Using the Long Route EGR layout, or a proper combination of LR and SR, substantial reductions of the NOx emissions both under steady state and transient operating conditions were achieved, while the numerical simulation allowed obtaining some fundamental knowledge for controlling the EGR flow rate more accurately.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Digital $37.00 Print $37.00

Preview Document

We also recommend:

Standards

SAE Mobilus®

Publications

News

Events

Professional Development

A World in Motion (PreK-12)

Participate with SAE

SAE Membership

Donate

Experimental and Computational Analysis of Different EGR Systems for a Common Rail Passenger Car Diesel Engine 2009-01-0672

SAE MOBILUS