Friday, 19 April 2024, 7:00 PM
Site: IMI eLearning
Course: IMI eLearning (IMI eLearning)
Glossary: Automotive Glossary
P
PerpendicularAt ninety degrees to another plane or line. |
PetrolVolatile hydrocarbon fuel for spark ignition engines. Also gasoline. |
Petroleum JellyA type of grease used for battery terminals. Vaseline is a refined version. |
PferdestärkeThe German word for horsepower. Pferdestärke. 1PS equals 0.986bhp. |
PFIPort Fuel Injection. |
PGPulse Generator. |
PH valueA measure of the acidity of a substance in an aqueous solution. Pure water has a pH value of 7 and is classified as neutral. Below 7 is acid and above 7 is known as basic. The scale is from 0 (strong acid) to 14 (strong base). |
PhaseThe time span between the start and end of a single wave moving from zero to positive and negative positions and returning to zero. |
Phase SensorSensor that indicates camshaft position and hence where the engine is in its cycle. |
Phasing (diesel injection)There are a number of phases of injection: fill phase, spill phase, injection phase and the pressure reduction phase. |