Thursday, 25 April 2024, 12:48 PM
Site: IMI eLearning
Course: IMI eLearning (IMI eLearning)
Glossary: Automotive Glossary
H
Hydraulic PedestalSelf-adjusting support for a finger tappet in the valve opening mechanism. |
Hydraulic PressurePressure applied by a fluid. |
Hydraulic TappetsSelf-adjusting cam followers in valve opening mechanism. |
Hydraulic ValvesValves used to control pressure or flow of a hydraulic fluid. |
HydrocarbonA compound which contains only carbon and hydrogen, which are distillate by-products of petroleum, natural gas and coal. |
Hydrocarbon (HC)Chemical compound which contains only, or principally, Carbon and Hydrogen. The principal constituent of liquid fossil fuels. |
Hydrocarbon EmissionsFuel vapours released into the atmosphere from a vehicle exhaust or fuel tank. |
HydrocrackTo break down (a hydrocarbon) by the process of hydrocracking. This is a catalytic cracking process of breaking down large hydrocarbon molecules into smaller ones |
HydrolysisReaction with water. Usually refers to a decomposition process leading to paint failure. |
HydrometerInstrument used for measuring specific gravity/relative density of a liquid (coolant, battery electrolyte). |