Glossary “HMMWV” Definition:
High Mobility Multipurpose-Wheeled Vehicle.
h
HMIS
Glossary “HMIS” Definition:
Hazardous Materails Identification System
HO
Glossary “HO” Definition:
High Output
HO2S
Glossary “HO2S” Definition:
Acronym for Heated Oxygen Sensor.
hitch pin
Glossary “hitch pin” Definition:
Term used for hitch receiver.
hitch receiver
Glossary “hitch receiver” Definition:
A heavy square tube into which the removable shank supporting the hitch ball is inserted.
hitch weight
Glossary “hitch weight” Definition:
Load imposed to the tow vehicle’s hitch by the trailer tongue, not to exceed 10-15% of the gross trailer weight.
hinged parts
Glossary “hinged parts” Definition:
Parts that swing or open, such as doors, hoods, and decklids.
history code
Glossary “history code” Definition:
A history code is set when a monitor tests fails during a trip, however additional trips shows no continued failure. A history code is stored in memory for 40 warmup cycles.
hitch
Glossary “hitch” Definition:
Device that is attached to the rear of a vehicle to allow it to pull a trailer.
hitch ball
Glossary “hitch ball” Definition:
Steel sphere mounted on top of the hitch to receive the cup-like fitting of a trailer.
high voltage cables
Glossary “high voltage cables” Definition:
The secondary cables that carry high voltage from the distributor to the spark plugs.
higher heating value (HHV)
Glossary “higher heating value (HHV)” Definition:
The measure of the heat that is released when a fuel is burned.
high tension cables
Glossary “high tension cables” Definition:
A term used for spark plug wires.
hign tension voltage
Glossary “hign tension voltage” Definition:
Voltage which is high enough to enable current to jump across the spark pulg gap.
high tension wire
Glossary “high tension wire” Definition:
The wire that transmits high voltage from the coil to the distributor.
high suction
Glossary “high suction” Definition:
Term used when the low-side pressure of a system is higher than normal due to a malfunction of the system.
high swirl combustion (HSC)
Glossary “high swirl combustion (HSC)” Definition:
Ford’s name for a cylinder head and valve design that promotes turbulence in the combustion chamber during the power stroke, contributing to complete and efficient burning of the A/F charge.
high swirl port technology
Glossary “high swirl port technology” Definition:
Cylinder head design with high-speed air flow to pack more A/F mixture into the combustion chamber.
high solids paint
Glossary “high solids paint” Definition:
The non-liquid contents of paint needed to reduce air pollutions or emissions when painting.