DICTIONARY OF AUTOMOTIVE TERMS - "Bt"
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BTDC
- Acronym for Before top dead center.
Spark occurs on the
Compression stroke, before the
Piston reaches
Top dead center.
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B thread
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B-Train
- Colloquial term for a truck tractor pulling two semi trailers where the second
trailer sits on a fifth wheel that is permanently attached and extends off the rear
of the lead trailer. Most commonly used on flatbeds or tank trailers. The B-train is
considered a more stable double trailers configuration.
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BTS
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- Acronym for Battery Temperature Sensor
- Acronym for Bureau of Transportation Statistics. An organization
which compiles, analyzes, and publishes statistics relevant to the US nation's
transportation system. Created to improve the knowledge base for public
decision-making and to improve public awareness of the nation's transportation
system, BTS collects information on transportation and other areas as needed.
The Bureau's largest data collection programs are the Commodity Flow Survey and
the American Travel Survey, conducted jointly with the Bureau of the Census to
identify where freight and people go by all modes of transportation.
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BTSI
- Acronym for Brake Transmission Shift Interlock
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BTU
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- Acronym for British thermal unit.
The amount of heat that must be added to one pound of water to raise its
temperature one Fahrenheit degree.
- Acronym for Board of Trade unit equal to 1 kWhr.
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BTU Gas
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BTX
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- Industry term referring to the group of aromatic hydrocarbons
benzene, toluene and xylene
- Acronym for benzene, toluene, xylene