what is knocking - EAS

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  1. knocking
    (nŏk)
    v.tr.
    1. To strike with a hard blow
    2. To affect in a specified way by striking hard
    3. To cause to be displaced or unengaged; force
    4. To cause to collide
    5. ...
    v.intr.
    1. To strike a sharp audible blow or series of blows, as on a door.
    2. To collide with something
    3. ...
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    Knocking - definition of knocking by The Free Dictionary

    https://www.thefreedictionary.com/knocking

  2. knocking | internal-combustion engine | Britannica

    https://www.britannica.com/technology/knocking-internal-combustion-engine

    knocking, in an internal-combustion engine, sharp sounds caused by premature combustion of part of the compressed air-fuel mixture in the cylinder. In a properly functioning engine, the charge burns with the flame front progressing smoothly from the point of ignition across the combustion chamber. However, at high compression ratios, depending on ...

  3. Engine knocking - Wikipedia

    https://en.wikipedia.org/wiki/Engine_knocking

    Knocking (also knock, detonation, spark knock, pinging or pinking) in spark ignition internal combustion engines occurs when combustion of some of the air/fuel mixture in the cylinder does not result from propagation of the flame front ignited by the spark plug, but one or more pockets of air/fuel mixture explode outside the envelope of the normal combustion front. The fuel-air charge is meant to be ignited by the spark plug only, and at a precise point in the piston's stroke…

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  4. What is knocking in engine? [How to get rid of this ...

    https://www.theengineerspost.com/knocking-in-engine

    05/08/2018 · A knock or a ping that you can actually hear when it occurs in your engine. The noise or sound is called as engine knocking. Simply naming the sound, though, doesn’t tell the whole story, and you’ll soon see why.

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  5. knock
    ĐỘNG TỪ
    knocking (hiện tại phân từ)
    1. strike a surface noisily to attract attention, especially when waiting to be let in through a door.
      "he strolled over and knocked on a door marked Enquiries" ·
      "I knocked and waited but no one answered"
      từ đồng nghĩa:
      bang · tap · rap · thump · pound · hammer · strike · hit · beat · batter · buffet · pummel
      • strike or thump together or against something.
        "her heart knocked painfully behind her ribs"
      • (of a motor or other engine) make a regular thumping or rattling noise, e.g. through pinking.
    2. collide with (someone or something), giving them a hard blow.
      "he deliberately ran against her, knocking her shoulder" ·
      "he knocked into an elderly man with a walking stick"
      từ đồng nghĩa:
      collide with · bump into · bang into · knock against · hit · strike ·
      be in collision with · run into · crash into · smash into · plough into · slam into · dash against · ram · jolt · impact
    3. informal
      talk disparagingly about; criticize.
      từ đồng nghĩa:
      criticize · find fault with · run down · disparage · belittle ·
      depreciate · deprecate · detract from · give a bad press to · cast aspersions on · scoff at · deride · jeer at · carp at · cavil at · lambast · censure · condemn · denounce · revile · attack
      từ trái nghĩa:
    4. informal
      approach (a specified age).
      "he's younger than his brother—knocking seventy"
    GỐC
    Old English cnocian, of imitative origin.
    Nhiều hơn vềknock
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  6. Knock Definition & Meaning - Merriam-Webster

    https://www.merriam-webster.com/dictionary/knock

    Definition of knock. (Entry 1 of 2) intransitive verb. 1 : to strike something with a sharp blow. 2 : to collide with something. 3 a : bustle heard them knocking around in the kitchen. b : wander …

  7. Knock - definition of knock by The Free Dictionary

    https://www.thefreedictionary.com/knock

    Define knock. knock synonyms, knock pronunciation, knock translation, English dictionary definition of knock. v. knocked , knock·ing , knocks v. tr. 1. To strike with a hard blow: knocked him on the head. 2. To affect in a specified way by striking hard: knocked the...

  8. What is knocking in an I.C. engine? - Quora

    https://www.quora.com/What-is-knocking-in-an-I-C-engine

    Engine knocking is the metallic ping sound generated from the engine. It could be caused due to change in fuel, carbon deposits or poor spark plug. It is also called as detonation or pinging . In SI engines, the spark plug ignites the air fuel mix...

    Engine knocking is the metallic ping sound generated from the engine. It could be caused due to change in fuel, carbon deposits or poor spark plug....
    22
    Knocking mostly occurs in spark ignited engines. It occurs in between compression and power stroke. In normal case, at the end of compression strok...
    31
    Knocking is generally caused in an old engines. knocking is due to auto-ignition of fuel in the cylinder during power stroke. knocking is mainly ca...
    40
    The IC engine or internal combustion engines can be classified into two basic types:- 1.Spark ignition engine 2.Compression ignition engine For eac...
    8
    There is a difference in the knocking mechanism in petrol(spark ignition) and diesel(compression ignition) engines. In petrol engines, the design i...
    10
    Knocking is referred to any unnatural vibration and combustion inside an IC engine. Suppose you have a petrol engine and in that engine, the combus...
    2
    Well if you know how the engine works and are familiar with all technical and theoretical aspects, I would like to explain using a very simple exam...
    3
    The fuel in the I. C. engines burns within a very short time. It can be compared to an explosion. If the fuel burns too fast (faster than speed ass...
    2
    Are you talking about a mechanical knock or a pre ignition "knock"? A mechanical knock is usually a spun rod or crank bearing or other major mechan...
    1
    It would depend on where and when the “knock” occur. It could be mechanical or ignition related. However, the other answers sum it up quite nicely.
    0
    What are methods to control knocking in SI engines?11/04/2018
    What is the difference between knocking and detonation in IC engine ...07/09/2017
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  9. Difference Between Knocking and Detonation | Compare the ...

    https://www.differencebetween.com/difference...
    • Knocking is the making sharp sounds due to uneven combustion of fuel in the cylinder of a vehicle engine. It happens because the air-fuel mixture inside the cylinder does not properly initiate the combustion as a response to ignition by spark plug. A spark plug is a device that can deliver an electric currentfrom an ignition system to a combustion chamber to ignite an air-fuel …
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    • What is Engine Knocking and How Can I Fix It? | Updated 2020

      https://www.cbac.com/media-center/blog/2013/may/...

      02/05/2013 · This can sometimes happen when your engine is at idle, while revving up, or even while rolling along smoothly. In fact, it could also be any combination of the three. This is an issue known as engine knock, and while it’s becoming increasingly rare in modern vehicles, when present, it’s still a difficult issue to fix.

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