Glossary “vaporize” Definition:
To change of a solid or liquid into a vapor.
v
vapor lock
Glossary “vapor lock” Definition:
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 running or starting.
vapor recovery system
Glossary “vapor recovery system” Definition:
1). Part of the EVAP emissions control system that prevents fuel 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 running. 2). The provisions of a fuel nozzle that prevent fuel vapors from entering the atmosphere when a vehicle is being fueled.
vapor return line
Glossary “vapor return line” Definition:
Hose or line used to carry fuel vapor from the fuel pump or the liquid vapor separator back to the fuel tank.
vapor saver system
Glossary “vapor saver system” Definition:
Term used for vapor recovery system.
vapor liquid ratio
Glossary “vapor liquid ratio” Definition:
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.
vane pump
Glossary “vane pump” Definition:
Pump having small vanes in an elliptically shaped housing.
vanes
Glossary “vanes” Definition:
Specifically designed and positioned fins that direct or redirect fluid flow inside the torque converter.
vapor
Glossary “vapor” Definition:
A gaseous form of matter.
vapor lines
Glossary “vapor lines” Definition:
Lines used to carry gas or vapor.
vane air temperature
Glossary “vane air temperature” Definition:
Sensor located in the vane airflow meter which senses the temperature of the air flowing into the engine. Changes in temperature result in changes in the resistive element of the sensor.
vane airflow meter
Glossary “vane airflow meter” Definition:
Sensor with a movable vane, connected to a potentiometer, calibrated to measure the amount of air flowing through the sensor. The output signal is sent to the processor which then translates the information into the amount of air flowing into the engine.
valvetrain
Glossary “valvetrain” Definition:
Parts that make the valves operate. The valve train includes the camshaft(s), related drive components, the various parts that convert camshaft’s rotary motion into reciprocating motion, and the valves and their associated parts.
van
Glossary “van” Definition:
A box-shaped, light truck with a forward cab.
van conversion
Glossary “van conversion” Definition:
A van that has been customized as a camping vehicle or for some other specific use.
vane
Glossary “vane” Definition:
A flat, extended surface such as that on an impeller of a pump.
valve timing
Glossary “valve timing” Definition:
Actual opening and closing of the valves in relationship to the number of degrees of crankshaft rotation.
valve stem height
Glossary “valve stem height” Definition:
Measurement that reflects how much a valve and valve seat have been ground.
valve stud boss
Glossary “valve stud boss” Definition:
The boss in the cylinder head that supports and holds the rocker-arm stud.
valve tappet
Glossary “valve tappet” Definition:
Term used for valve lifter.