Evaluation of electrified airpath configurations for an opposed piston two stroke compression ignition architecture
by Erik Vorwerk; Patrick O'Donnell; Dennis Robertson; Robert Prucka; Benjamin Lawler; Fabien Redon; Ming Huo; Ashwin Salvi
International Journal of Powertrains (IJPT), Vol. 13, No. 1, 2024

Abstract: Opposed piston two-stroke (OP2S) diesel engines have shown promise in reducing emissions and increasing efficiency compared to conventional four-stroke diesel engines. Airpath design on this architecture is critical to realising these benefits, as OP2S scavenging and internal composition are primarily controlled by intake and exhaust pressure differentials, and most pumping work is incurred external to the engine cylinder. Using 1-D simulation and an experimentally validated baseline model, this research evaluates the influence of airpath design on steady-state performance metrics of a two-cylinder OP2S engine. First, conventional, electrified, and novel compression and expansion devices are considered, as well as a range of scavenging control devices, to develop four viable airpath architectures. These architectures are then compared across their operating ranges, and a sensitivity analysis is performed on various airpath component efficiencies. Overall, it is found that the best layout investigated consists of an electrically assisted turbocharger with a variable geometry turbine.

Online publication date: Tue, 16-Apr-2024

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Powertrains (IJPT):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com