backfire

backfire

1. in an internal-combustion engine

a. an explosion of unburnt gases in the exhaust system

b. a premature explosion in a cylinder or inlet manifold

2. a controlled fire started to create a barren area that will halt an advancing forest or prairie fire

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backfire [′bak‚fīr]

(civil engineering)

A fire that is started in order to burn against and cut off a spreading fire.

(electronics)

arcback

(engineering)

Momentary backward burning of flame into the tip of a torch. Also known as flashback.

(mechanical engineering)

In an internal combustion engine, an improperly timed explosion of the fuel mixture in a cylinder, especially one occurring during the period that the exhaust or intake valve is open and resulting in a loud detonation.

(ordnance)

Rearward escapement of gases or cartridge fragments upon firing a gun.