Glossary “vibration” Definition:
A rapid back and forth motion. A part that is in motion in waves, or cycles.
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vibration damper
Glossary “vibration damper” Definition:
Device designed to dampen or reduce crankshaft torsional (twisting) vibrations that might otherwise cause crankshaft cracks or breakage.
VFCF
Glossary “VFCF” Definition:
Variable Speed Fan Control Output Fault
VFD
Glossary “VFD” Definition:
Vacuum Fluorescent Display
VFS
Glossary “VFS” Definition:
Variable Fuel Sensor
VGT
Glossary “VGT” Definition:
Variable Geometry Turbocharger
VFCDC
Glossary “VFCDC” Definition:
Variable Speed Fan Control Duty Cycle
vertical welding
Glossary “vertical welding” Definition:
The pieces are turned upright. Gravity tends to pull the weld puddle down the joint.
very high frequencies (VHF)
Glossary “very high frequencies (VHF)” Definition:
The band of signal frequencies between 30 and 300 MHz.
very low frequencies
Glossary “very low frequencies” Definition:
Those radio frequencies between 3 and 30 KHz.
Vetronix
Glossary “Vetronix” Definition:
Manufacturer of automotive tools and equipment such as the Mastertech scan tool.
vertical load capacity
Glossary “vertical load capacity” Definition:
The maximum recommended vertical downward force that can be safely applied to a coupling device.
vert
Glossary “vert” Definition:
Acronym form of Vertical.
vertical load
Glossary “vertical load” Definition:
The weight on a tire that serves as the input for a tire’s performance.
vertical position
Glossary “vertical position” Definition:
The position of welding in which the weld axis is approximately vertical.
vernier calipers
Glossary “vernier calipers” Definition:
Precision measuring instrument with both a fixed and a sliding jaw, and a depth gauge; used to measure thickness and depth.
ventilation
Glossary “ventilation” Definition:
To circulate fresh air through a space or system.
venturi
Glossary “venturi” Definition:
1). Narrow area in a pipe through which a liquid or a gas is permitted to flow. 2). The constriction of the air passageway between the choke and throttle plates in a carburetor, so as air flows past this constriction, its velocity increases and a partial vacuum is produced, thereby promoting a flow of fuel from the main jet nozzle.
venturi principle
Glossary “venturi principle” Definition:
Condition of a gas or liquid flowing through a pipe and the pipe diameter is narrow in one place, the flow speeds up in the narrow area, causing a lower pressure in the narrow area, which may be defined as venturi.
venturi vacuum amplifier
Glossary “venturi vacuum amplifier” Definition:
Some EGR systems having a device that uses the weak venturi vacuum signal to regulate the application of strong manifold vacuum to the EGR valve, usually including a reservoir that supplies sufficient vacuum when the engine is producing too little for proper operation.