Exploring the Next Frontier in Efficiency with the Opposed-Piston Engine English Free Members only

The Achates Power Opposed Piston Engine delivers a demonstrable incremental improvement in brake thermal efficiency compared with the most advanced conventional four-stroke engines. With the elimination of components such as the entire cylinder head and valvetrain, the Achates Power OP Engine is also less complex and costly to produce.
After a brief overview of the opposed-piston architecture’s inherent efficiency benefits this technical paper features detailed performance and emissions results of a multi-cylinder 4.9L Achates Power opposed-piston engine tested on dynamometer and configured to meet current commercial truck requirements.
The second part of this paper presents the results from testing various transient test-cycles on the multi-cylinder 4.9L engine including aftertreatment performance.
After a brief description of a light duty engine concept and how it improves fuel consumption by 30% over an advanced light duty diesel 4-stroke engine the paper discusses the next step in technology development for the OP engine: The gasoline compression ignition opposed piston engine.

INGENIEURS DE L'AUTO SE DIGITALISE

 

 

La revue Ingénieurs de l’Auto est maintenant diffusée en print et on line. Une grande première pour la SIA avec ce numéro 865, disponible au format numérique.

Cette version digitale sera, à chaque numéro, réservée aux membres de la SIA abonnés.

Exceptionnellement pour ce premier numéro on line, et en lien avec la situation de confinement et de télétravail de beaucoup d’ingénieurs de notre industrie, la version digitale du numéro de Mai est accessible à tous.

 

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