Devices Providing Backfire Flame Control for Gasoline Engines in Marine Applications
<p>This SAE Standard covers the minimum requirements for design, construction, and testing of devices to prevent the propagation of backfire flame from within the gasoline engine to the surrounding atmosphere.</p>
Rationale: The committee changed the language in the flame arrestor test in the recently revised version to use the greater volume of the standard test chamber OR the intake device volume. Previous versions allowed either one regardless of size. NMMA sent a request for interpretation to the committee on the reasoning for this. In discussing with several individuals involved in the concern, the fact that modern fuel injected engines will not normally fill the intake manifold with an explosive fuel/air mix. After much discussion, the result was a decision to retract the language that had been added in the 2018 revision and restore the test requirements to the 2005 version.