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Only tangentially related, but at the ARPA-E Summit this year, there was a company demonstrating an opposed cylinder, 2-stroke, compression ignition engine that
by flubert 8y ago
Only tangentially related, but at the ARPA-E Summit this year, there was a company demonstrating an opposed cylinder, 2-stroke, compression ignition engine that they had placed in an F-150 as a test bed. They were claiming something like 37 MPG.
https://www.energy.gov/articles/transformative-tech-2018-arpa-e-energy-innovation-summit https://www.energy.gov/articles/transformative-tech-2018-arp...
- ericd 8y agoWas it less polluting than most other 2 stroke engines? Because they're generally horrible polluters compared to 4 stroke engines.
- flubert 8y agoThat is the claim anyway. http://achatespower.com/wp-content/uploads/2018/02/JSAE_s171308_API_2017.pdf http://achatespower.com/wp-content/uploads/2018/02/JSAE_s171... http://achatespower.com/ http://achatespower.com/
- walshemj 8y ago"compression ignition" presumably different to a Diesel?
- flubert 8y agoYes, 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...