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Standard measure of the performance of an engine or aviation fuel
An octane rating, or octane number, is a standard measure of a fuel's ability to withstand compression in an internal combustion engine without causing
Octane_rating
Hydrocarbon compound with the formula C8H18
4-trimethylpentane (commonly called iso-octane), is used as one of the standard values in the octane rating scale. Octane is a component of gasoline and petroleum
Octane
Aviation fuel
lead-containing additive used to aid in lubrication of the engine, increase octane rating, and prevent engine knocking (spark-knock). There are ongoing efforts
Avgas
Fuel for petrol-paraffin engines
defined. For example, gasoline may have an octane rating between 88 and 102. Because TVO has a lower octane rating than petrol, the engine needs a lower compression
Tractor_vaporising_oil
Fuel blend of 85% ethanol and 15% another liquid
cooling properties of ethanol. E85 has an octane rating higher than that of regular gasoline's typical rating of 87, or premium gasoline's 91-93. This
E85
Liquid fuel derived from petroleum
engines) is measured by its octane rating or performance number. Tetraethyl lead was once widely used to increase the octane rating but is not used in modern
Gasoline
Chemical compound (C7H16)
100% heptane fuel is the zero point of the octane rating scale (the 100 point is 100% iso-octane). Octane number equates to the anti-knock qualities of
Heptane
Air compressor for an internal combustion engine
octane rating became a major focus of aero engine development for the remainder of the war, with later fuels having up to a nominal 150-octane rating
Supercharger
Chemical compound
octane (C8H18). This particular isomer is the standard 100 point on the octane rating scale (the zero point is n-heptane). It is an important component of
2,2,4-Trimethylpentane
Agent used to increase a fuel's octane rating
gasoline additive used to reduce engine knocking and increase the fuel's octane rating by raising the temperature and pressure at which auto-ignition occurs
Antiknock_agent
Series of V8 engines built by Chrysler
of squish, are more sensitive to fuel octane rating; a given compression ratio will require a higher octane rating to avoid detonation in a hemi engine
Chrysler_Hemi_engine
Topics referred to by the same term
compression needed for ignition Octane rating, a standard measure of the performance of an engine or aviation fuel Performance Rating, formerly a method of comparing
Rating
Performance measurement of diesel fuel
rating, CN) is an indicator of the combustion speed of diesel fuel and compression needed for ignition. It plays a similar role for diesel as octane rating
Cetane_number
Liquid hydrocarbon mixture condensed from natural gas
API. Natural gasoline is rather volatile and unstable, and has a low octane rating, but can be blended with other hydrocarbons to produce commercial gasoline
Natural_gasoline
Organolead compound
gasoline beginning in the 1920s. This "leaded gasoline" had an increased octane rating that allowed engine compression to be raised substantially and in turn
Tetraethyllead
American chemist (1902–1995)
12, 1902 – March 3, 1995) was an American chemist who invented the octane rating system when he was working at the Ethyl Corporation. Later in his career
Russell_Earl_Marker
Liquids that can be used to create energy
dangerous. Gasoline sold in most countries carries a published octane rating. The octane number is an empirical measure of the resistance of gasoline to
Liquid_fuel
2026 studio album by Don Toliver
Octane is the fifth studio album by American rapper and singer Don Toliver. It was released through Donnway & Co and Cactus Jack under license to Atlantic
Octane_(Don_Toliver_album)
Chemical compound
used as a fuel additive, MTBE is blended into gasoline to increase octane rating and knock resistance, and to reduce unwanted tailpipe emissions. MTBE
Methyl_tert-butyl_ether
Continuous catalytic process used in the refining of cruel oil
octane rating of 87-90.5. If the feedstock is subsequently passed through a Molex-technology column, the end product typically has an octane rating of
Penex
Topics referred to by the same term
transport service Premium gasoline, a grade of gasoline, with the highest octane rating Premium beer, marketing term for beer Premium Processing Service, service
Premium
Component of a petroleum refinery
isobutane and has an octane rating of 100 by definition. There are other products in the alkylate effluent, however, so the octane rating will vary accordingly
Alkylation_unit
Petroleum conversion process
replaced by catalytic cracking, which yields greater volumes of high octane rating gasoline; and produces by-product gases, with more carbon-carbon double
Fluid_catalytic_cracking
Facility that processes crude oil
order to: increase their crude oil processing capacity, increase the octane rating of their product gasoline, lower the sulfur content of their diesel
Oil_refinery
Internal combustion engine designed to run on gasoline
as E10 and E85). They may be designed to run on petrol with a higher octane rating, as sold at petrol stations. Most petrol engines use spark ignition
Petrol_engine
Topics referred to by the same term
4-Trimethylpentane or iso-Octane Octane rating, a motor-fuel classification Octane (Spock's Beard album), 2005 Octane (Don Toliver album), 2026 Octane (film), a 2003
Octane_(disambiguation)
Gasoline additives may increase gasoline's octane rating, thus allowing the use of higher compression ratios for greater efficiency and power, or act
List_of_gasoline_additives
English chemist, inventor, and defence adviser (1885–1959)
inventor and Rector of Imperial College, who developed the modern "octane rating" used to classify petrol, helped develop radar in World War II, and
Henry_Tizard
Chemical compound
Lejeune, who called it trimethylisopropylmethane. Due to its high octane rating (112–113 RON, 101 MON) triptane was produced on alkylation units starting
Triptane
Type of biofuel
it to burn cleanly, producing carbon dioxide and water, and its high octane rating makes it suitable for high-compression engines. Most ethanol is produced
Ethanol_fuel
in government specifications. In 1929, the octane rating scale was adopted, and in 1930, the first octane specification for aviation fuels was established
History_of_gasoline
Index of the ignition quality of residual fuel oil
ignition quality of the fuel. For spark-ignition engines the fuel has an octane rating. For diesel engines it depends on the type of fuel, for distillate fuels
Calculated Carbon Aromaticity Index
Calculated_Carbon_Aromaticity_Index
Motor fuel brand of Shell plc
assessed, categorised and sold by an octane rating. Generally, in most areas of the world, the Research Octane Number (RON) is used, but in North America
Shell_V-Power
Alcohols used as fuel for internal combustion engines
gasoline than the simpler alcohols (while still retaining over 25% higher octane rating); however, biobutanol is currently more difficult to produce than ethanol
Alcohol_fuel
Facility that sells gasoline and diesel
such as gasoline (petrol), often as multiple products with different octane ratings) and diesel fuel, as well as liquified petroleum gas (LPG, i.e. autogas)
Filling_station
Reciprocating internal combustion engine
increased output to 440 bhp (330 kW; 450 PS) when using fuel with a minimum octane rating of 97 RON. The Red Rose upgrade included reshaped intake and exhaust
TVR_Speed_Eight_engine
Chemical element with atomic number 25 (Mn)
manganese tricarbonyl is an additive in some unleaded gasoline to boost octane rating and reduce engine knocking. Manganese(IV) oxide (manganese dioxide,
Manganese
Combustion chamber capacity ratio
operation on tractor vaporising oil with an octane rating between 55 and 70. Motorsport engines often run on high-octane petrol and can therefore use higher compression
Compression_ratio
Swedish manufacturer of high-performance sports cars
ethanol, and in any mixture between these two fuels. Ethanol has a higher octane rating compared to regular fuel. In 2009, Koenigsegg released information about
Koenigsegg
Mixtures of common ethanol fuel types
mixtures are used in some racing engine applications as the very high octane rating of ethanol is compatible with very high compression ratios. Ethanol
Common_ethanol_fuel_mixtures
Topics referred to by the same term
mid-1950s US helicopter Remote online notarization Research Octane Number, a type of fuel octane rating Resilient Overlay Network, an Internet application architecture
Ron
Petroleum naphtha product
content, benzene being a human carcinogen. Though Coleman fuel has an octane rating of 50 to 55 and a flammability similar to gasoline, it has none of the
Coleman_fuel
Problem in internal combustion engines
following techniques: retarding ignition timing the use of a fuel with high octane rating, which increases the combustion temperature of the fuel and reduces
Engine_knocking
2003 British film
Octane (released as Pulse in the United States) is a 2003 horror film directed by Marcus Adams and starring Madeleine Stowe, Mischa Barton, and Norman
Octane_(film)
Mixture formation system
induction to produce high power reliably from low-quality gasoline with an octane rating of only 87. In addition, the fighter's engine did not stall in negative‑G
Gasoline_direct_injection
Expansion rate of a flame front in a combustion
kinetics Deflagration G-Equation Burn rate (chemistry) Wobbe index Octane rating Griffiths, J.F.; Barnard, J.A. (1995). Flame and Combustion. Springer
Flame_speed
Natural number
wheels and tracks of real railroads. 87 is by far the most commonly used octane rating of gasoline in the United States, Canada, Australia, and New Zealand
87_(number)
Pine tree found in North America
availability of this hydrocarbon in pure form made it the basis of the modern octane rating in the late 1920s. The largest specimen, by trunk volume, is the Eureka
Pinus_jeffreyi
Chemical process used to remove sulfur in natural gas and oil refining
catalytic reforming units that are subsequently used to upgrade the octane rating of the naphtha streams. The industrial hydrodesulfurization processes
Hydrodesulfurization
Fuel for internal combustion engines
(Motor octane number) of 78 (with a resulting "(R+M)/2 pump octane number" of 87, as used in North America) while t-butanol has octane ratings of 105
Butanol_fuel
List of definitions of terms and concepts related to automobiles
fastening member between a fifth-wheel and semi-trailer. knock rating See octane rating. knocking knockout axle A type of detachable axle, usually on a
Glossary_of_automotive_terms
Second generation of Mercedes-Benz C-Class
or flex-fuel. Based on premium fuel. Performance may vary with fuel octane rating as specified in Operator's Manual. 1 Please see 2007 Operator's Manual
Mercedes-Benz_C-Class_(W203)
Low-density mixture of hydrocarbon liquids
range of hydrocarbons distilled from crude oil. Natural gasoline has an octane rating of about 30 to 50, which is enough for the low-compression engines of
Natural-gas_condensate
Motor vehicle
nationally available fuel available at the beginning of 1952 had an octane rating of just 70, which enforced relatively low compression ratios: this reduced
Austin_A30
Internal combustion engine type
ratio). The octane rating of a given fuel is a measure of the fuel's resistance to self-ignition. A fuel with a higher numerical octane rating allows for
Four-stroke_engine
Fuel used to power aircraft
in aviation context. Although it comes in many different grades, its octane ratings are generally much higher than those of road motor gasoline. Alternatives
Aviation_fuel
Topics referred to by the same term
modified crop MON 863, a Monsanto genetically modified crop Motor octane number, an octane rating for fuel Music On! TV, M-On, a Japanese TV channel Martin O’Neill
Mon
Topics referred to by the same term
heights to facilitate traffic flow Cetane rating, a measure of diesel fuel's combustion quality Octane rating, also called gasoline grade, the measure
Grade
Methods of transforming crude oil
order to: increase their crude oil processing capacity, increase the octane rating of their product gasoline, lower the sulfur content of their diesel
Petroleum_refining_processes
Chemical compound
leaded gasoline, MMT was later used in unleaded gasoline to increase the octane rating. Following the implementation of the Clean Air Act (United States) (CAA)
Methylcyclopentadienyl manganese tricarbonyl
Methylcyclopentadienyl_manganese_tricarbonyl
British engineer (1885-1974)
research into the physics of internal combustion that led to the use of octane ratings, was instrumental in development of the sleeve valve engine design,
Harry_Ricardo
Futures contract
oxygenates like ethanol or methyl tertiary butyl ether (MTBE), to improve octane rating and reduce air pollution. RBOB is refined from crude oil and about half
Reformulated Blendstock for Oxygenate Blending
Reformulated_Blendstock_for_Oxygenate_Blending
Aircraft engine family
with increased octane ratings. Numerous detail changes were made internally and externally to the engine to withstand increased power ratings and to incorporate
Rolls-Royce_Merlin
Type of saturated hydrocarbon compound
which reason its distillate was designated as the zero point for one octane rating. Floral scents have also long been known to contain volatile alkane
Alkane
American fuel station chain owned by Phillips 66
the 1776 United States Declaration of Independence, and was also the octane rating of the gasoline in 1932. 76 signs are orange balls with a 76 legend
76_(gas_station)
German sports car built 1976–1988
from 9.7:1 to 10.2:1, the knock-on effect being an increase in the octane rating, up from 91 RON to 95. This made the 924S slightly faster than the base
Porsche_924
Chemical compound (C5H12)
1990s US and 3.6–11% in the US in 2011. It has a substantially higher octane rating (RON 93.7) than n-pentane (61.7), and therefore there is interest in
Isopentane
Chemical compound
straight chain or slightly branched hydrocarbons that can increase the octane rating of a particular petroleum-based fuel. Triflic acid reacts exothermically
Triflic_acid
Piston engine with 12 cylinders in V-configuration
petrol produced in the 1920s and 1930s had lower octane rating, leading to lower engine performance ratings, and vibration isolating engine mounts were rarely
V12_engine
Reciprocating internal combustion engine
motor and has higher compression ratio, taking advantage of higher octane rating of the fuel. In this configuration the engine runs in Atkinson cycle
Hyundai_Gamma_engine
Chemical compound (H2SO4)
isobutane with isobutylene to give isooctane, a compound that raises the octane rating of gasoline (petrol). Sulfuric acid is also often used as a dehydrating
Sulfuric_acid
Chemical process used in oil refining
reformates, which are premium "blending stocks" for high-octane gasoline. The process converts low-octane linear hydrocarbons (paraffins) into branched alkanes
Catalytic_reforming
Inline four-cylinder automobile engine
half point of compression; 9.5:1 to 10.0:1. Premium fuel with a 91 octane rating or higher was recommended for these engines due to the compression ratio
Quad_4_engine
Motor vehicle
use of regular leaded, low lead or unleaded gasoline of at least 91 octane rating per GM corporate mandate in anticipation of the catalytic converters
Chevrolet Impala (fifth generation)
Chevrolet_Impala_(fifth_generation)
additive and was sold as either regular gasoline (octane rating of 89) or high test (octane ratings of 91 or higher) until leaded petrol was phased out
List_of_retronyms
Liquefied petroleum gas when it is used as a fuel in internal combustion engines
30% lower compared to petrol, and NOx is reduced by 50%. It has an octane rating (MON/RON) that is between 90 and 110 and an energy content (higher heating
Autogas
the differences among the hosting countries on national coverage and octane rating. Kerosene for Turbine: Commercially available kerosene for airlines
Formula_One_engines
Soviet military light utility vehicle
inline-four engine as the UAZ-452 and is able to run on gasoline with an octane rating as low as 72 (although 76 was preferred). This engine was used in a
UAZ-469
Crude oil analysis
Energy Chemistry API gravity Cetane index K factor (crude oil refining) Octane rating Petroleum coke PONA number Ramsbottom carbon residue Reid vapor pressure
Crude_oil_assay
Process breaking down complex organic molecules into simpler ones
[citation needed] The gasoline produced in the FCC unit has an elevated octane rating but is less chemically stable compared to other gasoline components
Cracking_(chemistry)
Motor vehicle
use of fuel synthesized from coal which was expected to have a lower octane rating than the “normal” fuel used at the time. The larger-engined car also
Mercedes-Benz_W142
Flammable organic fuel (C4H10)
2012-12-03. Crosstex Energy, L.P. FORM 10-K. Sec.gov. Jechura, John. "octane rating" (PDF). Colorado School of Mines. Archived (PDF) from the original on
Butane
Swedish mid-engine sports car
chambers along with the added boost, made possible by ethanol's higher octane rating when compared to gasoline. Due to the lower specific energy content
Koenigsegg_CCX
Fuel for heating, cooking and vehicles
non-corrosive and free of tetraethyllead or any additives, and has a high octane rating (102–108 RON depending on local specifications). It burns more cleanly
Liquefied_petroleum_gas
Flammable liquid hydrocarbon mixture
has seen very little use and suffers from lower efficiency and low octane ratings, typically 40 to 70 RON. It can be used to run unmodified diesel engines
Naphtha
Motor vehicle
of 2 mm. Compression is 8.5, and the fuel required is petrol with an octane rating of 91 RON. The Spider's engine had "teething troubles", but is a compact
NSU_Spider
Combustion engine using an eccentric rotary design
a compression of ε=9 runs well on mediocre-quality gasoline with an octane rating of just 91 RON. If in a reciprocating engine the compression must be
Wankel_engine
Topics referred to by the same term
visits the same restaurant, pub, store, transit provider, etc. Regular octane rating of gasoline, as a differentiation from "premium" and similar variants
Regular
Hydrocarbon compound (C6H6)
into benzene. As a gasoline (petrol) additive, benzene increases the octane rating and reduces knocking. As a consequence, gasoline often contained several
Benzene
German inverted V-12 aircraft engine
375:1 high ratio drive Fuel system: direct fuel injection Fuel type: 87 octane rating gasoline Oil system: Pressure feed at 4–6 atm (59–88 psi; 4.1–6.1 bar)
Junkers_Jumo_211
Transformation of the chemical structure of a molecule or ion
hydrocarbons are favored for internal combustion engines for their higher octane rating. Diesel engines however operate better with straight-chain hydrocarbons
Isomerization
American engineer at UCI
director of the National Fuel Cell Research Center. He pioneered the octane rating method adopted in the United States and was named a White House “Champion
Scott_Samuelsen
Motor vehicle
and in consequence had retarded ignition settings to tolerate the low octane rating of the fuels available to avoid the engine knocking or 'pinking' condition
Austin_A40_Somerset
Series of Diesel cycle aircraft engines for general aviation
(i.e. engines that require leaded aviation gasoline with a very high octane rating).[citation needed] A Centurion engine complete with constant speed unit
Thielert_Centurion
Form of matter
as "gasoline" is primarily defined through source, properties and octane rating. Every chemical substance has one or more systematic names, usually
Substance_(chemistry)
American car model
low-lead or unleaded gasoline with a research octane rating of 91 or higher (equivalent to 87 octane by today's octane measurements). For 1972, there were minor
Oldsmobile_Cutlass
Timing of the release of a spark in a combustion engine
air-fuel ratio. It is a common myth that burn speed is linked with octane rating. Setting the ignition timing while monitoring engine power output with
Ignition_timing
Sports prototype developed by Lola Cars
When forced to run on commercially available "pump fuel", with a lower octane rating than the "Avgas" permitted under American rules, engine failures related
Lola_T70
American energy company
allowed customers of Sunoco service stations to choose from several octane ratings through a single pump. Sunoco stations offered as many as eight grades
Sunoco
Grade of fuel in North America, c. 1910s–1960s
both usage of the term and formulation of the product varied widely. Octane ratings varied similarly, between 33 and 45. Early railroad motor cars and tractors
Distillate_(motor_fuel)
travel, tourism, insurance
OCTANE RATING
OCTANE RATING
Boy/Male
African French
Plant.
Girl/Female
Spanish
From the forest.
Girl/Female
Greek
Form of Oceanus. In Greek mythology Oceanus was a Titan father of rivers and water nymphs.
Girl/Female
Basque Spanish
Health.
Girl/Female
Australian, Christian, French, Latin
Rising; Dawning; Golden
Girl/Female
Hindu, Indian
Responsible
Female
French
French form of Roman Latin Leontina, LÉONTINE means "lion-like."
Girl/Female
French
Rising.
Girl/Female
Latin
An Amazon.
Girl/Female
French, German
Rising; Green
Girl/Female
German
Elfin spear.
Female
English
French from of Latin Oriana, possibly ORIANE means "golden."
Male
English
English unisex name derived from the vocabulary word, from Latin oceanus, from Greek okeanos, OCEAN means "ocean."
Boy/Male
French
Fountain; water source.
Girl/Female
Latin
Born eighth.
Surname or Lastname
English
English : nickname, most likely for a tall, thin man with long legs, from Middle English cran ‘crane’ (the bird), Old English cran, cron. The term included the heron until the introduction of a separate word for the latter in the 14th century.Dutch : variant spelling of Krane.English translation of German Krahn or Kranich.The American writer Stephen Crane (1871–1900) was named for a NJ ancestor who was a delegate to the Continental Congress. He was descended from a Stephen Crane who, coming probably from England or Wales, settled at Elizabethtown, NJ, as early as 1665.
Boy/Male
French American
Born eighth.
Girl/Female
Australian, French, German, Greek
Form of Oceanus
Boy/Male
Biblical
A disturber, that disorders.
Girl/Female
French, German
Elfin Spear; Wealthy
OCTANE RATING
OCTANE RATING
OCTANE RATING
OCTANE RATING
OCTANE RATING
OCTANE RATING
OCTANE RATING
travel, tourism, insurance