Final answer:
A backfire flame arrester is used to prevent the ignition of gasoline fumes in an inboard engine backfire.
Step-by-step explanation:
To prevent the ignition of gasoline fumes in an inboard engine backfire, a backfire flame arrester is used. A backfire flame arrester is a device that is installed on the intake manifold of the engine. Its purpose is to prevent flames from traveling back into the intake and igniting any fuel or fumes that may be present.
The backfire flame arrester works by using a series of metal plates or wire mesh to extinguish any flames that may occur. These plates or mesh are designed to allow the flow of air and fuel mixture, but they are also able to stop flames from passing through. By blocking the flames, the backfire flame arrester prevents the ignition of gasoline fumes and reduces the risk of a potentially dangerous backfire.
Overall, the backfire flame arrester is an important safety feature in an inboard engine. It helps protect the engine and passengers from the risks associated with backfires and the ignition of gasoline fumes.