Burning of a mixture through the induction system in a reciprocating engine. It is the process of extended combustion into the air intake manifold, supercharger, and carburetor or by mechanical faults. The popping sound heard at the moment of switching off the engine is an indication of backfiring. A loud bang from a reciprocating engine is the result of the premature ignition of the fuel-air mixture in the induction system while the intake valve is still open. The flame travels through the inlet valve and along the induction manifold. A lean fuel-air mixture is a common reason for backfiring.

Aviation dictionary. 2014.

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  • backfire — [bak′fīr΄] n. ☆ 1. a fire started to stop an advancing prairie fire or forest fire by creating a burned area in its path 2. a premature ignition of fuel or an explosion of unburned exhaust gases in an internal combustion engine, sometimes… …   English World dictionary

  • backfire — UK [ˌbækˈfaɪə(r)] / US [ˈbækˌfaɪr] verb [intransitive] Word forms backfire : present tense I/you/we/they backfire he/she/it backfires present participle backfiring past tense backfired past participle backfired 1) if a plan or idea backfires, it… …   English dictionary

  • backfire — [[t]bæ̱kfa͟ɪ͟ə(r), AM faɪr[/t]] backfires, backfiring, backfired 1) VERB If a plan or project backfires, it has the opposite result to the one that was intended. The President s tactics could backfire... [V on/against n] It all backfired on me!… …   English dictionary

  • backfire — /bak fuyeur /, v., backfired, backfiring, n. v.i. 1. (of an internal combustion engine) to have a loud, premature explosion in the intake manifold. 2. to bring a result opposite to that which was planned or expected: The plot backfired. 3. to… …   Universalium

  • backfire — /bækˈfaɪə / (say bak fuyuh) verb (i) (backfired, backfiring) 1. (of an internal combustion engine) to have a premature explosion in the cylinder or in the admission or exhaust passages. 2. Chiefly US to check a forest or prairie fire by burning… …   Australian English dictionary

  • backfire — v. & n. v.intr. 1 undergo a mistimed explosion in the cylinder or exhaust of an internal combustion engine. 2 (of a plan etc.) rebound adversely on the originator; have the opposite effect to what was intended. n. an instance of backfiring …   Useful english dictionary

  • backfiring — noun see backfire II …   Useful english dictionary

  • anti-backfire valve — (anti BFV) Valve used in air injection reaction (exhaust emission control) system to prevent backfiring during the period immediately following sudden deceleration by diverting the air coming from the air pump away from the exhaust ports.… …   Dictionary of automotive terms

  • Back-fire — For other meanings of the term see backfire. A Back fire or backfire is an explosion in the inlet manifold, carburetor/throttle body or air cleaner of an internal combustion engine.cite book last =Afgan first = authorlink = coauthors =Naim Afgan …   Wikipedia

  • Классификация НАТО — Кодовые обозначения (англ. NATO reporting names) используются НАТО для обозначения военной и авиационной техники СССР (теперь России), Китая и в редких случаях других стран. Они используются для унификации иноязычных (для стран НАТО) наименований …   Википедия

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