Sunday, 19 May 2024, 4:54 PM
Site: IMI eLearning
Course: IMI eLearning (IMI eLearning)
Glossary: Automotive Glossary
P
Pressure Relief ValveThe valve in an oil or hydraulic circuit that opens to release excess fluid pressure and return fluid to the feed side of the pump. |
Pressure SwitchA pressure sensitive switch used to provide a signal voltage to an instrument, lamp or electronic control module. |
Pressure Wave SuperchargerA supercharger using the exhaust pressure waves to boost the inlet air pressure. This supercharger uses a drum with longitudinal drillings that is rotated in time with the engine and ported to match inlet and exhaust pressure waves together. |
Pressure-feed GunA spray gun equipped with a separate paint container that is pressurized and connected to the spray gun by means of a solvent-resistant fluid hose, in addition to the normal air hose. |
Primary ShoeA brake shoe that has a leading edge making first contact when applied. Also leading shoe. |
Primary WindingThe low tension (primary circuit) coil of wire in an ignition coil. |
PrimerThe first coat of paint applied to a substrate. Depending on the formulation of a particular primer, its function can be to provide any combination of">adhesion, build, scratch-filling, ground coating and corrosion resistance. |
Primer-sealerAn undercoat which improves adhesion of the topcoat, by sealing off old painted surfaces that have been sanded; usually does not require sanding when dry. |
PrimingLifting fuel into the system components to remove air. |
Priming PumpA manually operated pump that lifts fuel into the system. |