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Vane

A flat, extended surface such as that on an impeller of a pump.

Vane Pump

A pump having small vanes in an elliptically shaped housing.

Vanes

The scientifically designed and positioned fins that direct or redirect fluid flow inside the torque converter.

Vapor

A gaseous form of matter.

Vapor Lines

Lines used to carry gas or vapor.

Vapor Liquid Ratio

A measurement of the ratio of vapor to liquid at a given temperature used to help determine a gasoline's tendency to contribute to vapor lock in an automotive fuel system.

Vapor Lock

A condition in carbureted engines where excessive heat has caused the fuel in the fuel line or fuel pump to boil, blocking the flow of fuel to the carburetor and preventing the engine from starting.

Vapor Recovery System

1. That part of the evaporative-emissions control system that prevents gasoline vapors from escaping to the atmosphere by trapping them in the charcoal canister to be drawn into the engine and burned when the engine is started. 2. The provisions of a fuel nozzle that prevent gasoline vapors from entering the atmosphere when a vehicle is being fueled.

Vapor Return Line

A hose used to carry fuel vapor from the fuel pump or the liquid vapor separator back to the fuel tank.

Vapor Saver System

A term used for vapor recovery system.

Vapor/Fuel Separator

A term used for vapor/liquid separator.

Vaporization

The process of tuning a liquid, such as gasoline, into a vapor which is often accomplished after the atomized fuel leaves the carburetor.

VAPS

Variable assist power steering.

VAR

Volts amps resistance.

Varactor

A semiconductor diode whose capacitance varies with the applied voltage, used extensively for automatic tuning in radio receivers.

Variable Resistor

A resistor that provides for an infinite number of resistance values within a specific range, such as a rheostat or potentiometer.

Variable Venturi Carburetor

A carburetor having an aperture that increases or decreases in size as controlled by intake manifold vacuum.

Variable-Aperture Carburetor

A term used for variable venturi carburetor.

Variable-Capacitor

A capacitor whose capacitance can be adjusted by rotating a shaft or crew.

Variable-Displacement Pump

A pump that automatically regulates output volume of fluid based on the needs of the transmission.