286
Views
27
CrossRef citations to date
0
Altmetric
Original Articles

Controlling D.I. Diesel Engine Emissions Using Multiple Injections and EGR

Pages 257-278 | Received 24 Feb 1998, Accepted 19 Jun 1998, Published online: 25 Apr 2007
 

Abstract

Experiments have been performed using a modern heavy-duty direct-injection diesel engine equipped with a common-rail, electronically-controlled high-pressure fuel injection system. The experimental results demonstrate the utility of using multiple or split fuel injections in combination with EGR for giving significant emissions reduction over the entire engine operating range. The mechanisms of emission reduction have been revealed by means of combustion visualization and CFD modeling. Soot is reduced due to the fact that the soot producing regions at the tip of the sprays are not replenished with fresh fuel when each injection is terminated and then restarted. The large reduction in soot possible with multiple injections allows the use of higher levels of EGR than is possible with single injections, so that NOx can be reduced significantly while soot levels are simultaneously kept low.

Additional information

Notes on contributors

R.D. REITZ

e-mail: [email protected]

Reprints and Corporate Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

To request a reprint or corporate permissions for this article, please click on the relevant link below:

Academic Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

Obtain permissions instantly via Rightslink by clicking on the button below:

If you are unable to obtain permissions via Rightslink, please complete and submit this Permissions form. For more information, please visit our Permissions help page.