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Old 02-09-2017, 11:13 PM   #334 (permalink)
RustyLugNut
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Transonic is a dead company and so are most of it's pages.

tscombustion.com was their main gateway.

There are, fortunately, vestigial links around the web but the most readable is this discussion from AutoblogGreen.

AutoblogGreen Q&A with Transonic Combustion: Can supercritical fluids give a 30% mpg boost? - Autoblog

There is still a Wiki up and running and the source notes at the bottom are informative though some are in German ( we have a fluent German speaker on staff simply because much of the good research comes out of Germany).

https://en.wikipedia.org/wiki/Transonic_Combustion

Source 1 is the link to their 2010 SAE paper abstract. They have a 5 page review that allows you to parse more detailed information about the test engine in discussion such as it's 17.5:1 compression ratio.

Transonic Combustion - A Novel Injection-Ignition System for Improved Gasoline Engine Efficiency


They could run the engine over a range of loads without a throttle but as I understand it, there was the need to throttle the engine for emission reasons over other operating regimes. A three way catalytic converter was to be employed. When un-throttled, the engine could run at 50:1 AFR. Un-throttled operation was much like that found in diesel engines.

And here are some claims as posted in an article from an MIT Publication.

https://www.technologyreview.com/s/4...e-passes-test/

I hope this gives you some food for thought.
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