no-knock mixture

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• knock rating — The standard scale of resistance to knock (the ability of fuel to remain at high temperatures and pressures without causing detonation) of reciprocating engine fuels, measured relative to iso octane. It is expressed as a percentage by volume of… …   Aviation dictionary

• knock — The sound associated with the auto ignition in the combustion chamber of an automobile engine of a portion of the fuel air mixture ahead of the advancing flame front …   Petroleum refining glossary

• spark knock — noun The sound produced, in an internal combustion engine, by the ignition of the fuel air mixture before the piston reaches top dead centre Syn: knocking …   Wiktionary

• knocking/knock — A loud knocking or banging noise made inside a reciprocating engine cylinder during the combustion stroke caused by shock waves produced by the detonating engine. Knocking is an explosion rather than a smooth burning process. It is caused by… …   Aviation dictionary

• Engine knocking — Pinging redirects here. For other uses, see Ping (disambiguation). Knocking (also called knock, detonation, spark knock, pinging or pinking) in spark ignition internal combustion engines occurs when combustion of the air/fuel mixture in the… …   Wikipedia

• Octane rating — or octane number is a standard measure of the anti knock properties (i.e. the performance) of a motor or aviation fuel. The higher the octane number, the more compression the fuel can withstand before detonating. In broad terms, fuels with a… …   Wikipedia

• Homogeneous charge compression ignition — Thermodynamics …   Wikipedia

• petroleum refining — Introduction  conversion of crude oil into useful products. History Distillation of kerosene and naphtha       The refining of crude petroleum owes its origin to the successful drilling of the first oil well in Titusville, Pa., in 1859. Prior to… …   Universalium

• gasoline engine — Most widely used form of internal combustion engine, found in most automobiles and many other vehicles. Gasoline engines vary significantly in size, weight per unit of power generated, and arrangement of components. The principal type is the… …   Universalium

• MythBusters (2009 season) — Country of origin Australia United States No. of episodes 23 (includes 3 specials) Broadcast Original channel …   Wikipedia

• Homogeneous Charge Compression Ignition — Homogeneous Charge Compression Ignition, or HCCI, is a form of internal combustion in which well mixed fuel and oxidizer (typically air) are compressed to the point of auto ignition. As in other forms of combustion, this exothermic reaction… …   Wikipedia