backtop


Print 78 comment(s) - last by Ringold.. on Oct 30 at 7:42 PM

MIT researchers work on a ethanol direct injection engine

MIT researchers are developing an automotive power plant that promises up to 30% greater fuel economy than traditional gasoline engines. The new engine, which would be powered by ethanol, would be production ready within five years.

MIT says that it can boost fuel efficiency by directly injecting ethanol into the cylinder. Direct injection technology is already being used on a number of gasoline engine vehicles including the Mazda MazdaSpeed3, Lexus IS350 and Pontiac Solstice GXP. Direct injection allows for a finer control of fuel and injection timings compared to traditional fuel injected vehicles.

Knocking sounds, which are caused by spontaneous combustion, would be eliminated allowing ethanol engines to use heavily-boosted turbocharging systems and much higher compression ratios. The use of direct injection combined with ethanol is what allows for the 30% increase in fuel economy. MIT goes so far as to say that if every vehicle in the United States were equipped with such an engine, yearly automotive fuel consumption would drop from 140 billion gallons to 110 billion gallons.

"To actually affect oil consumption, we need to have people want to buy our engine, so our work also emphasizes keeping down the added cost and minimizing any inconvenience to the driver," said Daniel Cohn, of MIT's Plasma Science and Fusion Center.

MIT researchers believe that an ethanol-based direct injection engine would add just $1,000 to the cost of a new vehicle instead of the $3,000 to $5,000 seen with hybrids. What's more amazing is that the engine will be half the size of conventional gasoline engines. But while all of this sounds nice, the new technology will be for naught if more ethanol pumping stations aren't added to our existing fuel delivery infrastructure.



Comments     Threshold


This article is over a month old, voting and posting comments is disabled

By tygrus on 10/27/2006 8:16:36 PM , Rating: 2
The deep fry oil from resturants and local gressy joe's should be recycled into biodiesel.
Note: You can't put vegetable oil straight into a diesel engine.
Although diesel engines may get around 80% more MPG compared to the petrol equivalent, the carbon content and energy density is about 80% more ie. 10L of petrol (gasoline) is same as 5.5L diesel. It's more complex comparing two different fuels than just MPG.
One of these days I'll investigate what's on the market and the new technology & engine variations. More oil would be saved with improvements to traffic flows and public transport.


By Comdrpopnfresh on 10/28/2006 4:49:01 PM , Rating: 2
NOTE: YOU CANNOT PLACE USED VEGE OIL STRAIGHT INTO A DIESEL ENGINE!
Commercial oils are from fats, so at room temperature and below they congeal. Biodiesel only congeals below freezing.


"Spreading the rumors, it's very easy because the people who write about Apple want that story, and you can claim its credible because you spoke to someone at Apple." -- Investment guru Jim Cramer











botimage
Copyright 2014 DailyTech LLC. - RSS Feed | Advertise | About Us | Ethics | FAQ | Terms, Conditions & Privacy Information | Kristopher Kubicki