The Proceedings of Mechanical Engineering Congress, Japan
Online ISSN : 2424-2667
ISSN-L : 2424-2667
2022
Session ID : W071-02
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Recent Advances in Opposed Piston Engines for Ultralow Emissions
Laurence J. FrommFabien Redon
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Abstract

Over the last several years, the development and demonstration of opposed-piston (OP) engines has advanced rapidly. This paper presents results of the Heavy Duty Diesel Demonstration Program, funded by the California Air Resources Board, that provide evidence a diesel OP engine can achieve ultralow levels of tailpipe NOx while also reducing fuel consumption (and CO2 emissions) compared to a reference vehicle using a modern, conventional diesel engine. It is important to note that the OP engine achieved these results using only conventional, underfloor aftertreatment systems. No additional emissions control technologies were required.

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© 2022 The Japan Society of Mechanical Engineers
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