engine knock

engine knock
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Англо-русский словарь промышленной и научной лексики. 2014.

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  • engine knock — When the engine is operating, an audible noise may be heard when the fuel in the cylinders is ignited too early and/or spontaneously, resulting in colliding flame fronts and shock waves which cause high thermal and mechanical stress, and can… …   Dictionary of automotive terms

  • 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

  • knock — I n. thumping noise 1) engine knock 2) a gentle; loud knock 3) a knock at, on (a knock at/on the door) blow (colloq.) 4) hard knocks (she has taken some hard knocks in her life) II v. 1) ( to rap ) to knock loudly 2) (colloq. ) (d; intr.) ( to… …   Combinatory dictionary

  • 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

  • knock — I. verb Etymology: Middle English knoken, from Old English cnocian; akin to Middle High German knochen to press Date: before 12th century intransitive verb 1. to strike something with a sharp blow 2. to collide with something 3. a. bustle …   New Collegiate Dictionary

  • knock — [näk] vi. [ME knokken < OE cnocian, akin to ON knoka, MHG knochen, to press < echoic base > KNACK] 1. to strike a blow or blows with the fist or some hard object; esp., to rap on a door 2. to bump; collide; clash 3. to make a thumping,… …   English World dictionary

  • Engine tuning — is the adjustment, modification or design of internal combustion engines to yield optimal performance, either in terms of power output or economy. It has a long history, almost as long as the development of the car in general, originating with… …   Wikipedia

  • 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 (1) Internal combustion (gasoline, diesel and gas… …   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

  • Engine control unit — An engine control unit (ECU) is an electronic control unit which controls various aspects of an internal combustion engine s operation. The simplest ECUs control only the quantity of fuel injected into each cylinder each engine cycle. More… …   Wikipedia

  • knock — knock1 W3S1 [nɔk US na:k] v ▬▬▬▬▬▬▬ 1¦(door)¦ 2¦(hit and move something)¦ 3¦(hit somebody hard)¦ 4¦(hit part of your body)¦ 5 knock on doors 6 be knocking on the door 7¦(remove wall)¦ 8 knock a hole in/through something 9¦(criticize)¦ …   Dictionary of contemporary English


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