Saturday, 27 April 2024, 1:59 AM
Site: IMI eLearning
Course: IMI eLearning (IMI eLearning)
Glossary: Automotive Glossary
R
Rocker ArmArm that works on a rocker shaft to open a valve on an overhead valve engine. |
Rocker ShaftA shaft, usually at the top of an overhead valve engine, on which the rockers pivot. |
Rocker SwitchA switch that has two or three positions. Often used with the centre as an off position and then with a voltage reversal process as it is rocked in either direction. |
RollVehicle body movement from side to side. |
Roller BearingA type of bearing consisting of a series of parallel rollers held in a cage between inner and outer bearing tracks. |
Roller PumpA type of fuel pump that uses a rotor and a series of parallel rollers in an elliptical casing to produce the pumping and carrying chambers of the pump. Usually electrically driven and used on many fuel injection systems. |
Roller-Cell PumpA type of fuel pump that uses a rotor and a series of parallel rollers in an elliptical casing to produce the pumping and carrying chambers of the pump. Usually electrically driven and used on many fuel injection systems. |
Rolling ResistanceThe frictional value for the circumferential surface of a rolling component in contact with the track or road on which it runs. An example is the rolling resistance of a road tyre on various road surfaces. |
Rolling RoadRollers set into the ground on which the wheels of a vehicle can be run. The system can then be used to check performance under driving conditions. |
ROMRead Only Memory in a computer, which is the permanent memory that is retained even when the power is switched off. |