E 250 Van V8-7.3L DSL (1988)
level.
ANTI-AFTERBURN VALVE (Courier) - Prevents abnormal combustion in the exhaust manifold by increasing fresh air in the intake manifold on
sudden deceleration. This tends to reduce vacuum and fuel flow.
Anti-Backfire Valve
ANTI-BACKFIRE VALVE (Anti-BFV) - Often called a gulp valve, the anti-backfire valve is located downstream from the air bypass valve. Its purpose
is to divert a portion of the thermactor air to the intake manifold when it is triggered by intake manifold vacuum on deceleration. The valve operates only
during periods of sudden decrease in intake manifold pressure.
ASPIRATOR - A device placed in the airstream at the outlet of the turbocharger or in some cases the thermactor. The speed of the air going through the
aspirator creates a venturi vacuum that is used to operate the speed control system during periods when the engine is under heavy load.
AUTOMOTIVE EMISSIONS - Gaseous and particulate compounds that are emitted from a car's crankcase, exhaust, carburetor and fuel tank
(hydrocarbons, nitrogen oxide and carbon monoxide).
B
Backfire Suppressor Valve
BACKFIRE SUPPRESSOR VALVE (BSV) - A device used in conjunction with the early design "Thermactor" exhaust emission system. Its primary
function is to lean-out the excessively rich fuel mixture which follows closing of the throttle after acceleration. Allows additional air into the induction
system whenever intake manifold vacuum increases.
Backpressure Variable Transducer System
BACKPRESSURE VARIABLE TRANSDUCER (BVT) SYSTEM - A system combining a ported EGR valve and a backpressure variable transducer to
control emissions of NO(x). The BVT system is used on most 1.6L and 2.3L passenger car applications.
BAFFLE or BAFFLE PLATE - An obstruction for reducing or deflecting flow of gases or sound.
