fuel knock

fuel knock

Dictionary of automotive terms. 2015.

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  • knock — [1] A general term used to describe various noises occurring in an engine; may be used to describe noises made by loose or worn mechanical parts. [2] Preignition, or detonation. Also see anti knock agent carbon knock diesel knock engine knock… …   Dictionary of automotive terms

  • 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

  • knock-rating — knockˈ rating noun The measurement of freedom from knocking of a fuel in an internal combustion engine, as compared with a standard fuel • • • Main Entry: ↑knock …   Useful english dictionary

  • 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

  • Fuel protests in the United Kingdom — The fuel protests in the United Kingdom were a series of campaigns held in the United Kingdom over the cost of petrol and diesel for road vehicle use. There have been 3 notable campaigns amongst many other protests in the 21st century. The first… …   Wikipedia

  • knock sth off — UK US knock sth off (sth) Phrasal Verb with knock({{}}/nɒk/ verb [T] INFORMAL ► to take a particular amount away from a price, value, etc.: »Living next door to an empty home can also knock 10% off the value of your own property, say experts.… …   Financial and business terms

  • knock sth off sth — UK US knock sth off (sth) Phrasal Verb with knock({{}}/nɒk/ verb [T] INFORMAL ► to take a particular amount away from a price, value, etc.: »Living next door to an empty home can also knock 10% off the value of your own property, say experts.… …   Financial and business terms

  • knock — backfire ackfire, back fire ack fire 1. A fire started ahead of a forest or prairie fire to burn only against the wind, so that when the two fires meet both must go out for lack of fuel. [Webster 1913 Suppl.] 2. (a) A premature explosion in the …   The Collaborative International Dictionary of English

  • 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

  • Ethanol fuel — is ethanol (ethyl alcohol), the same type of alcohol found in alcoholic beverages. It can be used as a fuel, mainly as a biofuel alternative to gasoline, and is widely used in cars in Brazil. Because it is easy to manufacture and process and can… …   Wikipedia

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