antiknock


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antiknock

a compound, such as lead tetraethyl, added to petrol to reduce knocking in the engine

antiknock

[′an·tē‚näk]
(materials)
Resisting detonation or pinging in spark-ignited engines.
A substance, such as tetraethyllead, added to motor and aviation gasolines to increase the resistance of the fuel to knock in spark-ignited engines. Also known as antidetonant.
References in periodicals archive ?
Coordinating Research Council, "Fuel Antiknock Quality-Engine Response to RON versus MON," CRC, Alpharetta, GA, 2011.
In 2002, of the published patents and patent applications 57% described deposit control additives, 26% antiknock agents, 5% combustion improvers, 5% water stabilizers in petrol, 3% antioxidants, inhibitors, stabilizers, and others (emission reducing additives, antiwear agents, de-emulsifiers, etc.
Was it because antiknock research had systematically examined all the alternatives and selected the best, as Loeb implies?
8~ that resembles benzene but is less volatile, flammable, and toxic, is produced commercially from light oils from coke-oven gas and coal tar and from petroleum, and is used as a solvent, in organic synthesis, and as an antiknock agent for gasoline.
Octel is one of the world's leading producers of octane-enhancing fuel additives for leaded, antiknock gasoline.
The RON procedure measures the antiknock quality of a fuel while the intake air temperature is maintained at 52[degrees]C.
Premium Gasoline: Gasoline having an antiknock index, i.
Among large number of alternative fuels methanol has both fine combustion properties similar to gasoline and advantages such as high octane number low emissions high antiknock and low cost so it has been used as an alternative fuel for gasoline [2].
005 g / liter, corresponding to the ID 11 in Table B1 of section 265 of the Customs Code and antiknock characteristic index search method 98, delivered the station;- Untaxed diesel and diesel for boaters with a flash point below 120 A C (60-103 nf t) delivered to the station.
An example of this trend is the development of superior types of gasoline from the standpoint of power production, which function is closely related to antiknock value.
Leaded gasoline was introduced in the American market in 1923, less than a year after Thomas Midgely and his co-workers at the General Motors Research Corporation in Dayton, Ohio, discovered that adding tetraethyl lead to gasoline as an antiknock agent gave cars more zip and allowed them to go farther on a tank of gas.
other, safer antiknock additives-used to increase gasoline octane and counter engine "knock"-were known and available to oil companies and the makers of lead antiknocks before the lead additive was discovered, but they were covered up and denied, then fought, suppressed and unfairly maligned for decades to follow;