- fuel efficiency UK US noun [U] NATURAL RESOURCES► (also fuel economy) the relationship between the amount of fuel a car uses and the distance it travels: »
Hybrids can give up to 40% better fuel efficiency, depending on how they are driven.► a measure of how much energy is produced by an engine in relation to the amount of fuel that it uses: »
Diesel engines generally have better fuel efficiency than gas ones.
Financial and business terms. 2012.
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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… … Wikipedia
fuel efficiency — /ˈfjuəl əfɪʃənsi/ (say fyoohuhl uhfishuhnsee) noun 1. the efficiency of the conversion of the energy input (the amount of fuel consumed) to the energy output (the amount of work that is done). 2. the efficient use of fuel so that the maximum… … Australian English dictionary
fuel efficiency — Although this factor is similar to fuel economy, it differs in that fuel efficiency involves getting the most amount of energy from an amount of fuel. It answers the question, What percent of the fuel does this engine burn? … Dictionary of automotive terms
Fuel Efficiency — The ratio of heat produced by a fuel for doing work to the available heat in the fuel … Energy terms
fuel-efficiency — See fuel efficient. * * * … Universalium
Fuel efficiency — See Miles per gallon. U.S. Dept. of Energy, Energy Information Administration s Energy Glossary … Energy terms
Fuel efficiency in transportation — This page describes fuel efficiency in means of transportation. For the environmental impact assessment of a given product or service throughout its lifespan, see life cycle assessment. Caveats Comparing Fuel efficiency in transportation is a bit … Wikipedia
Fuel economy in automobiles — Fuel consumption monitor from a 2006 Honda Airwave … Wikipedia
Fuel economy-maximizing behaviors — (also known as green driving) describe techniques that drivers can use to optimize their automobile fuel economy. The energy in fuel consumed in driving is lost in many ways, including engine inefficiency, aerodynamic drag, rolling friction, and… … Wikipedia
Fuel saving device — Fuel saving devices are sold on the aftermarket with claims to improve the fuel economy and/or the exhaust emissions of a vehicle. There are numerous different types of device; many purport to optimize ignition, air flow, or fuel flow in some way … Wikipedia