This article has multiple issues. Please help improve it or discuss these issues on the talk page. (Learn how and when to remove these template messages)
This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "Engine efficiency" – news · newspapers · books · scholar · JSTOR(December 2008) (Learn how and when to remove this message)
This article may be too technical for most readers to understand. Please help improve it to make it understandable to non-experts, without removing the technical details.(January 2018) (Learn how and when to remove this message)
(Learn how and when to remove this message)
Engine efficiency of thermal engines is the relationship between the total energy contained in the fuel, and the amount of energy used to perform useful work. There are two classifications of thermal engines-
Internal combustion (gasoline, diesel and gas turbine-Brayton cycle engines) and
External combustion engines (steam piston, steam turbine, and the Stirling cycle engine).
Each of these engines has thermal efficiency characteristics that are unique to it.
Engine efficiency, transmission design, and tire design all contribute to a vehicle's fuel efficiency.
Engineefficiency of thermal engines is the relationship between the total energy contained in the fuel, and the amount of energy used to perform useful...
turbofan engines. They give higher speed and greater fuel efficiency than piston and propeller aeroengines over long distances. A few air-breathing engines made...
cycle is an ideal case of a mechanical engine. In any case, fully understanding an engine and its efficiency requires a good understanding of the (possibly...
piston type steam engines were the dominant source of power until the early 20th century. The efficiency of stationary steam engine increased dramatically...
improvements resulted in increased engineefficiency that reduced fuel consumption by 10%. The adoption of VVTi, a much higher efficiency single turbocharger than...
An internal combustion engine (ICE or IC engine) is a heat engine in which the combustion of a fuel occurs with an oxidizer (usually air) in a combustion...
theoretical efficiency limit is 100%, based on it being an open cycle engine and therefore not limited by Carnot efficiency. In comparison, the efficiency of a...
internal combustion engine, steam turbine, steam engine, boiler, furnace, refrigerator, ACs etc. For a heat engine, thermal efficiency is the ratio of the...
high. The diesel engine has the highest thermal efficiency (engineefficiency) of any practical internal or external combustion engine due to its very...
links to diagrams) The Aircraft Engine Historical Society Jet Engine Specification Database Aircraft EngineEfficiency: Comparison of Counter-rotating...
unit of fuel consumed. It is dependent on several factors including engineefficiency, transmission design, and tire design. In most countries, using the...
Volumetric efficiency (VE) in internal combustion engine engineering is defined as the ratio of the equivalent volume of the fresh air drawn into the...
other words, the independence of thermal and propulsive efficiencies, as exists with the piston engine/propeller combination which preceded the turbojet, is...
of increasing engine capacity, including increasing the pressure in the cylinders to improve efficiency, increasing the size of the engine, and increasing...
heat sink, thereby increasing its efficiency. The heat is supplied from the outside, so the hot area of the engine can be warmed with any external heat...
concept of entropy. The Carnot engine is the most efficient heat engine which is theoretically possible. The efficiency depends only upon the absolute...
vehicles are propelled by heat engines of some kind, usually an internal combustion engine. The efficiency of a heat engine relates how much useful work...
of GDI can help increase engineefficiency and specific power output as well as reduce exhaust emissions. The first GDI engine to reach production was...
{m}}v_{e}^{2}}{\eta _{combustion}P_{chem}}}} 100% efficiency within the engine (engineefficiency η c = 100 % {\displaystyle \eta _{c}=100\%} ) would...
order to achieve practical thermal efficiency are extreme compared to a non-afterburning airbreathing jet engine. No atmospheric nitrogen is present...
of atmospheric drag, requiring periodic altitude boosts – a high-efficiencyengine (high specific impulse) for station-keeping would be valuable; theoretically...
reduces the efficiency further still. GE Jenbacher's recent J624 engine is the world's first high efficiency methane-fueled 24-cylinder gas engine. When considering...
assemblies, smoother operation at that engine speed, and increased engineefficiency.[citation needed] This engine has been phased out in most markets,...
upper limit on the efficiency of any classical thermodynamic engine during the conversion of heat into work, or conversely, the efficiency of a refrigeration...
The GD engine featured Economy with Superior Thermal Efficient Combustion (ESTEC) technology. Toyota claims they have a maximum thermal efficiency of 44...
limit of heat engineefficiencies, and the equality of this expression is what is called the Carnot efficiency, that is the efficiency of all reversible...
the efficiency of early steam engines, particularly through the work of French physicist Sadi Carnot (1824) who believed that engineefficiency was the...
Conversions of units: While the thermal efficiency (mechanical output to chemical energy in fuel) of petroleum engines has increased since the beginning of...
Global Information
