Japan's new auto sales slip 1.1 percent in August

TOKYO, Sept. 3 (UPI) -- Japan's domestic new automobile sales slipped 1.1 percent in August year-on-year to 366,754 units, the country's dealers association said.

Bombardier lines up tentative deal to sell 50 airliners in Russia

MONTREAL, Aug. 28 (UPI) -- Canadian aircraft maker Bombardier Aerospace said Wednesday it has signed a letter of intent with a Russian company for 50 jetliners worth about $1.7 billion.

AutoOutlook: Ford lowers C-Max mpg rating, GM suspends ops in Egypt

U.S. automaker Ford Motor Co. said this week it will lower the fuel efficiency rating on the C-Max, a hybrid vehicle, from 47 miles per gallon in combined city and highway driving to 43 mpg.
PAT NASON, United Press International

The almanac

UPI Almanac for Friday, Aug. 9, 2013.
By United Press International

CACI reports intel community contracts

ARLINGTON, Va., Aug. 1 (UPI) -- CACI International reports it received intelligence-related contracts worth more than $425 million in its fiscal year 2013, which ended in June.

Global fears of running out of oil unwarranted, U.S. researchers say

PALO ALTO, Calif., July 10 (UPI) -- U.S. researchers say fears of running out of oil are unwarranted, as the demand for oil -- but not the supply -- will reach a peak and then decline.

Toyota Prius worldwide sales tops 3 million

TOKYO, July 4 (UPI) -- Japanese automaker Toyota Motor Corp. announced worldwide cumulative sales of its Prius gasoline-electric hybrid car have topped 3 million.
Corollas, Jeeps, buttons, knobs and backup cameras

Corollas, Jeeps, buttons, knobs and backup cameras

I had a girlfriend in college who had a 1970 Toyota Corolla. Back in the day the boxy Japanese compact was a novelty, sort of like what early buyers of Hyundai and Kia vehicles experienced when they drove South Korean cars in the early 1990s.
Obama to seek limit on existing power plant CO2 fumes

Obama to seek limit on existing power plant CO2 fumes

WASHINGTON, June 20 (UPI) -- President Obama plans to limit existing U.S. power plants' carbon dioxide fumes, officials said, as Obama said slowing global warming required "bold action."

Dreamliner makes its debut in China

CHICAGO, June 1 (UPI) -- Boeing Co. said the delivery of the first Dreamliner Saturday to China Southern Airlines indicates a "strengthening partnership between Boeing and China.

GE Aviation enhancing facility

NEWARK, Del., May 22 (UPI) -- GE Aviation reports it will invest $27 million into a facility in Delaware that makes aircraft engine components from ceramic matrix composites.
United relaunches 787 Dreamliner

United relaunches 787 Dreamliner

CHICAGO, May 20 (UPI) -- U.S. carrier United Airlines Monday relaunched its 787 Dreamliner jets following four months of grounding due to safety concerns.

Obama optimistic despite partisan rancor

ATLANTA, May 20 (UPI) -- President Obama Sunday told a Democratic National Committee event in Atlanta politics are to blame for the difficulty in getting anything done in Washington.

Bell unveils new tilt-rotor helo

FORT WORTH, Texas, April 11 (UPI) -- A new tilt-rotor helicopter, called the V-280 Valor, was unveiled by Bell Helicopter this week.
Page 3 of 5
Fuel Efficiency
President Barack Obama (C) delivers remarks alongside Environmental Protection Agency (EPA) Administrator Lisa Jackson (R) and Transportation Secretary Ray LaHood prior to signing a series of executive orders during a ceremony in the East Room at the White House in Washington on January 26, 2009. The executive orders will give states more control over car emissions and increase vehicle fuel efficiency standards. (UPI Photo/Kevin Dietsch)

Fuel efficiency, is a form of thermal efficiency, meaning the efficiency of a process that converts chemical potential energy contained in a carrier fuel into kinetic energy or work. Overall fuel efficiency may vary per device, which in turn may vary per application, and this spectrum of variance is often illustrated as a continuous energy profile. Non-transportation applications, such as industry, benefit from increased fuel efficiency, especially fossil fuel power plants or industries dealing with combustion, such as ammonia production during the Haber process. The United States Department of Energy and the EPA maintain a Web site with fuel economy information, including testing results and frequently asked questions.

In the context of transportation, "fuel efficiency" more commonly refers to the energy efficiency of a particular vehicle model, where its total output (range, or "mileage" ) is given as a ratio of range units per a unit amount of input fuel (gasoline, diesel, etc.). This ratio is given in common measures such as "liters per 100 kilometers" (L/100 km) (common in Europe and Canada) or "litres per mil" (Norway/Sweden) or "miles per gallon" (mpg) (prevalent in the USA, UK, and often in Canada, using their respective gallon measurements) or "kilometres per litre"(kmpl) (prevalent in Asian countries such as India and Japan). Though the typical output measure is vehicle range, for certain applications output can also be measured in terms of weight per range units (freight) or individual passenger-range (vehicle range / passenger capacity).

This ratio is based on a car's total properties, including its engine properties, its body drag, weight, and rolling resistance, and as such may vary substantially from the profile of the engine alone. While the thermal efficiency of petroleum engines has improved in recent decades, this does not necessarily translate into fuel economy of cars, as people in developed countries tend to buy bigger and heavier cars (i.e. SUVs will get less range per unit fuel than an economy car).

This article is licensed under the GNU Free Documentation License.
It uses material from the Wikipedia article "Fuel Efficiency."
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