Fuel efficiency

While windtunnels have long been employed in aerospace and all forms of race engineering, we’re likely to see them employed more frequently in future in the quest for improved fuel efficiency from our automobiles. Ecomodder.com’s Darin Cosgrove recently added this 1.37 tailpiece to his Pontiac Firefly to improve its drag coefficient from 0.34 to 0.23 and its fuel efficiency by 15.1 percent at 90kmh (56mph).  Read More

From more than 100 entrants, 43 teams and 53 vehicles have now advanced to the most important, and possibly exciting, stage of the $10 million Progressive Insurance Automotive X Prize – performance and safety testing. The 43 teams represent 10 countries, 18 U.S. states, and six fuel types and all have passed the fuel-efficiency competition’s Design Judging phase. Vehicles must be able to achieve more than 100mpg or energy equivalent (MPGe), as well as being vehicles that people want to buy, meeting market needs for price, size, capability, safety and performance.  Read More

By manipulating matter at the nanoscale level, engineers from North Carolina State University led by Dr. Jagdish Narayan have developed a new material that could make it possible to manufacture terabyte memory chips the size of a fingernail, boost vehicles' fuel economy significantly and reduce heat dissipated by semiconductors, with applications ranging from spintronics to solar panel technology.  Read More

Daihatsu's stand at the opening day of the 2009 Tokyo Motor Show featured six mini concept cars focused very much on practicality in an urban environment. Somewhat strangely, the company's concepts stood out because, unlike many other vehicles on the showfloor, none of the cars are electric or electric gasoline hybrid. Daihatsu has instead tried to refine existing technology both in lightweight manufacturing and engine efficiency to improve on fuel economy, but that's not to say the company isn't aiming for a zero-local emissions future - this is only the first step in its road map for powertrains that will culminate in a switch to a fuel cell based system.  Read More

Even before entering the Progressive Automotive X-Prize competition, Jack McCornack had started to pull together all the things needed to knock out a sporty two-seater car capable of achieving 100 miles per gallon. Fueled by the desire to make his creation a template for others to repeat and determined to bring it together within a strict budget, the race was on to bring MAX into the world - a Lotus Seven replica which just happens to run on vegetable oil. Paul Ridden traces the history of this fascinating project.  Read More

Most of the efforts to produce more environmentally-friendly cars in recent years have focused on alternative fuels and more efficient engines. UK-based engineering company, Torotrak, has instead decided to turn its expertise to another vehicle component with the development of a new generation transmission that it claims can not only slash CO2 emissions and improve fuel efficiency, but also boost performance.  Read More

The two engine technologies tend to be regarded as completely separate, so we rarely contemplate how gasoline and diesel can work together. But, in a series of tests conducted at the University of Wisconsin, scientists have used an engine’s fuel injection to produce the optimal diesel-gas mix for any given moment. The results are impressive: an average 20% greater fuel efficiency; combustion temperatures reduced by up to 40%; and effortless meeting of the stringent EPA 2010 emission regulations. Plus, the researchers believe that if their findings were implemented into every gasoline and diesel engine in the US, the savings could be as great as 4 million barrels of oil daily.  Read More

In 1974 Porsche introduced the 911 Turbo (Porsche 930 in the U.S.) and it became an instant classic with its swollen wheel-arches, whale tale spoiler, distinctive exhaust rasp, demanding handling and 256 bhp of eye-popping acceleration. Now Porsche is poised to release a next generation 911 Turbo at Frankfurt Motor Show next month and the extensive check list of techno-wizardry highlights just how far automotive technology has progressed in a third of a century – driving dynamics have improved dramatically from previous turbos, it uses less than half the fuel (24 mpg) of the original and produces TWICE the power.  Read More

Gizmag is always on the lookout for alternative means of powering vehicles and saving precious fossil fuels. But, in truth, the vast majority of us still drive exclusively petrol-powered cars. And the even sadder truth, outlined in a new research from the University of Michigan, is that the average fuel efficiency of a US vehicle has improved only three miles per gallon since the days of the Ford Model T.  Read More