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Automotive Acronyms H

Acronym Definition Notes / What Is / Who Is
HC hydrocarbon Released into the atmosphere as a result of incomplete engine combustion of fossil fuels. (oil / gas)
HDDA Heavy Duty Distribution Association Segment of AAIA
HDMA Heavy Duty Manufacturers Association Represents companies participating in the classes 4, 5, 6, 7 and 8 medium and heavy truck original equipment and aftermarket parts manufacturing industry.
HEGO heated exhaust gas oxygen sensor See H02S
HO2S heated oxygen sensor Sensor need to be heated before it will generate a voltage signal. Some systems use up to four O2 sensors and may have 3 or 4 wire leads.
HO2S1 upstream heated oxygen sensor See HO2S above
HO2S2 up or downstream heated oxygen sensor See HO2S above
HO2S3 downstream heated oxygen sensor See HO2S above
hp horsepower The output power of a engine.
HVAC heating ventilation and air conditioning system Control of climate

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Note: An Acronym is a abbreviation that is formed using the individual letter components in a phrase, name, organization or thing. Listings on this page are used throughout the automotive industry.

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