- air gulp system
- A system in vehicles with secondary air injection or induction, which prevents an very rich mixture of air-fuel from entering the inlet manifold during deceleration. If it did enter, unburned fuel would be forced over the hot exhaust system causing backfiring (i.e., uncontrolled detonation). The air gulp system prevents this condition by allowing a quantity of air to combine with the rich mixture in the inlet manifold.
Dictionary of automotive terms. 2015.
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gulp system — See air gulp system … Dictionary of automotive terms
gulp valve — A vacuum controlled valve that admits fresh air to the inlet manifold during deceleration to prevent backfiring in the exhaust system; its vacuum signal is governed by a thermovalve and a solenoid valve to ensure that the gulp valve action does… … Dictionary of automotive terms
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