Glossary “rotary vacuum valve” Definition:
Part of a vacuum control used to divert a vacuum signal for operation of doors, switches, and/or valves.
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rotary valve
Glossary “rotary valve” Definition:
Semi-circular disc in a two-stroke engine that opens and closed the intake port.
rotary valve steering gear
Glossary “rotary valve steering gear” Definition:
Type of power steering gear.
rotary flow
Glossary “rotary flow” Definition:
Torque converter oil flow associated with the coupling stage of operation.
rotary oil flow
Glossary “rotary oil flow” Definition:
Condition caused by the centrifugal force applied to the oil as the converter rotates around its axis.
rosin core solder
Glossary “rosin core solder” Definition:
Type of solder design to be used for electrical wiring repairs.
rotary
Glossary “rotary” Definition:
The turning motion around an axis.
rotary combustion engine (RC engine)
Glossary “rotary combustion engine (RC engine)” Definition:
A four-cycle engine having a revolving triangular-shaped rotor to transfer power thrust via eccentric(s) to the output shaft.
rotary diesel
Glossary “rotary diesel” Definition:
A rotary combustion engine operating on diesel principles in which the fuel injected into the combustion chamber at the end of the compression phase is ignited by the heat produced during compression, rather than by the spark from a plug.
rotary engine
Glossary “rotary engine” Definition:
A engine with a three-sided rotor in a slightly hourglass-shaped oval chamber.
rope seal
Glossary “rope seal” Definition:
Type of seal used on crankshafts shaped much like a small, thin rope.
ROSCM
Glossary “ROSCM” Definition:
Rear Object Sensor Control Module
rosette weld
Glossary “rosette weld” Definition:
Term used for plug weld.
roof panel
Glossary “roof panel” Definition:
A large panel that fits over the passenger compartment.
room temperature vulcanizing (RTV)
Glossary “room temperature vulcanizing (RTV)” Definition:
Trade name for rubber-like sealing compound.
root bead
Glossary “root bead” Definition:
A weld bead that extends into, or includes part or all of the joint root.
roots supercharger
Glossary “roots supercharger” Definition:
A mechanically driven, positive displacement blower with hourglass-shaped rotors.
RON
Glossary “RON” Definition:
Research Octane Number.
roof bows
Glossary “roof bows” Definition:
Any of several side-to-side structural arches that support the roof. The bows are attached to the roof rails, between the front and rear header panels.
rolling radius
Glossary “rolling radius” Definition:
The distance between the center of the wheel and the contact points of the tire on the ground under the weight of a vehicle.