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March 10, 2008 11:51 AM PDT

Transonic: the best of both diesel and gasoline?

by Richard Stuebi

Whereas diesel engines have made great strides in the European auto markets, here in the U.S., gasoline still dominates. Apparently, the prospect of much higher fuel mileage and lower CO2 emissions from diesels doesn't overcome the objections of U.S. environmental regulatory authorities concerned mainly about local air quality issues. I suspect that, even if (when?) these objections are overcome by continued refinement, diesels will still find it difficult to win market share in the U.S., largely because of the wider availability of gasoline.

A possible win-win solution may be forthcoming. A California firm named Transonic Combustion is working on technology that would allow gasoline engines to work at high compression ratios, thus enabling much better energy conversion ratios comparable to what is achieved in the typical diesel engine. Sounds like a great idea to me; hope it works. I wonder, though, if it will provide the throaty sound of those big-block V-8's that Americans seem to love so much.

Richard T. Stuebi is the BP Fellow for Energy and Environmental Advancement at The Cleveland Foundation, and is also the Founder and President of NextWave Energy, Inc.

Richard Stuebi is the BP Fellow for Energy and Environmental Advancement at the Cleveland Foundation. He is a member of the CNET Blog Network and is not an employee of CNET.
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Transonic: the best of both diesel and gasoline?
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by Jacobush March 10, 2008 12:32 PM PDT
It is, in fact, a good thing that the EPA not only cares how much CO2 comes out of a tailpipe, but also in what form. Soot from diesel engines is a problem as is the SOX, NOX, and VOC (if the engine is really old or in really bad shape). Some of these chemicals have Global Warming potentials ten thousand times that of CO2. The production of these chemicals is inherent to the diffusion flame burning process used in diesel engines.
So I applaud Transonic Combustion for their work, but I would warn Richard not to see their work as an attempt to reach the Holy Grail offered by diesel engines. I would in fact say that while both systems are imperfect, a gasoline engine will burn cleaner yet a little less efficiently than the diesel.
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by csauceda2 March 10, 2008 12:58 PM PDT
Global Warming is an elaborate ruse, wake up people, gas prices are the poster child of the Econ 101, Supply and Demand concepts, regardless of what that media-darling Al Gore says...

Higher prices have facilitated new technology, hybrids specifically, and I support conservation to minimize economic impact on our economy, NOT to get a slap on the back from the fear mongers... I mean global warming supporters... Wish I could fast forward time about 5 years just to have a good laugh at the 2007 "Nobel Price" winner...

http://apnews.myway.com/article/20080310/D8VAI73G0.html
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by robert_expr February 27, 2009 1:43 AM PST
It sounds excellent that Transonic Combustion involves in making technology that supports gasoline engines to work at high compression ratios. How does this help us to prevent from global warming which in turn effectively help us to improve the growth of companies like BGI Worldwide Logistics (http://www.bgiworldwide.com) .
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Neal Dikeman is a founding Partner at Jane Capital Partners LLC, advising the technology and venture arms of multi-national energy companies in cleantech. While at Jane Capital, he has cofounded superconducting technology company SC Power Systems, Inc. (now Zenergy Power plc), and wireless technology startup WaiterPad POS Systems, and he is currently involved in launching a new venture in carbon credits. The Cleantech Blog includes posts by Neal and other authors about biofuels, solar, and global warming.


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