What Future For Two Stroke Engines?

by Pascal Köppler
(France)

First of all, four stroke engines do NOT exist in the nature. 3.5 billion years of evolution has lead to electrical engines (flagella engines) or two stroke ones like our heart. If the four stroke concept would be an advantage, you can be sure Mother Nature would be using it everywhere. But nothing is there!

Direct Injection for two-stroke engines is a real step forward. VCR (Variable Compression Ratio, allowing multi-carburation and huge fuel savings at lower charges) will be another one, as well as closed circuit lubrication and asymmetric timing ports. The ultimate two-stroke engine will be able to work alternatively with fuel or methane gas (natural gas or methane coming from our organic waste methanisation processes: fermentation and chemical methanation of plastics, wood and almost all the waste we have buried in our soils for decades).

That's the putative future for two-stroke engines. I like it!