valve bypass
31gulp 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… …
32thermostatic bypass valve — A valve that is integral to an oil cooler system. It maintains the proper oil temperature by varying the proportion of the total oil flow passing through the oil cooler. The valve has a spring loaded thermostatic element, two inlet ports, and one …
33air bypass valve — (ABPV or ABV) a backfire suppressor valve used in air injection systems. During high engine vacuum conditions such as deceleration, it vents pressurized air from the air pump to the atmosphere in order to prevent backfiring. At other times, it… …
34air control valve — (ACV) a vacuum controlled diverter valve (or a combination bypass/diverter valve) in an air injection system that diverts air pump air to either the upstream (exhaust manifold) or downstream (oxidation catalyst) air injection points as necessary …
35diverter valve — [1] A valve which adds an amount of air to the rich air fuel mixture entering the intake manifold during deceleration. [2] Used in air injection system to channel airflow to either the exhaust manifold or oxidation catalyst under different… …
36cross-flow valve — A valve meant to bypass hydraulic fluid from the landing gear upline to the downline when the landing gear is being extended. The weight of the landing gear, when it is released, is so great that it falls very rapidly. Under these conditions,… …
37anti-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.… …
38idle air control valve — (IAC) on fuel injection vehicle, a valve that allows air to bypass the throttle plate(s), increasing idle speed. The valve is operated by an electric solenoid or motor. The vehicle computer controls the amount of opening to regulate idle speed… …
39thermactor air control valve — Combines a bypass (dump) valve with a diverter (up/down stream) valve; controls the flow of the thermactor air in respond to vacuum signals to its diaphragms …
40cooler bypass — See oil cooler bypass valve …
