Yes, a gasoline engine. "ABSTRACT: Achates Power has spent the past 12 years modernizing this historically efficient engine architecture to deliver a step-wise

Yes, a gasoline engine. "ABSTRACT: Achates Power has spent the past 12 years modernizing this historically efficient engine architecture to deliver a step-wise improvement in brake thermal efficiency (BTE) over the most advanced conventional four-stroke engines. In addition, with the elimination of parts such as the cylinder head and valve train, it is also less complex and less costly to produce - making it even more appealing to manufacturers. This paper highlights the work done, to date, on the Opposed-Piston Gasoline Compressions Ignition engine and discusses the advantages of the OP engine as an ideal platform for incorporating gasoline compression ignition (GCI) technology, the study of which recently was funded by the U.S. Department of Energy’s Advanced Research Projects Agency–Energy." http://achatespower.com/wp-content/uploads/2018/02/JSAE_s171308_API_2017.pdf http://achatespower.com/wp-content/uploads/2018/02/JSAE_s171...