• On GameSpot: Wii Fit tells 10-year-old she's fat
March 10, 2008 11:51 AM PDT

Transonic: the best of both diesel and gasoline?

Posted by Richard Stuebi
  • Font size
  • Print

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.
Recent posts from Cleantech
Elon Musk talks Tesla IPO, funding
Jump in my (green) bed
Oil consumption peaks for world's No. 3 consumer
Coal on the offensive
Save the suds and water with Eco Touch Waterless Car Care
Clothing, optional
Transonic: the best of both diesel and gasoline?
The week in sustainable energy stocks
Add a Comment (Log in or register) 2 comments
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.
Reply to this comment
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
Reply to this comment
advertisement
Click Here

In the news now

Slowing expectations at a green-tech start-up

Six months ago, biofuels start-up Mascoma had the wind in its sails, as did the rest of the clean-tech sector. Now, the company is treading carefully and scaling back.


With JavaFX, Sun seeks new coders, new revenue

With the launch of JavaFX 1.0, Sun is trying to reclaim Java's strength as a foundation for rich Internet applications. But it's no longer the incumbent.


Tim Lincecum, motion capture star

San Francisco Giants pitcher, who won the Cy Young award last month, dons a motion capture suit for 2K Sports' Major League Baseball 2K9 video game.


About Cleantech

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.


Add this feed to your online news reader

Cleantech topics

Blogroll

advertisement

Inside CNET News

Scroll Left Scroll Right