Английская Википедия:Cubic inch
Шаблон:Short description Шаблон:Use American English Шаблон:Use mdy dates Шаблон:More citations needed Шаблон:Infobox unit
The cubic inch (symbol in3) is a unit of volume in the Imperial units and United States customary units systems. It is the volume of a cube with each of its three dimensions (length, width, and height) being one inch long which is equivalent to 1/231 of a US gallon.[1]
The cubic inch and the cubic foot are used as units of volume in the United States, although the common SI units of volume, the liter, milliliter, and cubic meter, are also used, especially in manufacturing and high technology. One cubic inch is approximately Шаблон:Val.
One cubic foot is equal to exactly Шаблон:Convert because 123 = 1,728.Шаблон:Citation needed
Notation conventions
- The following abbreviations have been used to denote the cubic inch: cubic in, cu inch, cu in, cui, cu. in.
- The IEEE standard symbol is: in3[1]
- In internal combustion engines, the following abbreviations are used to denote cubic inch displacement: c.i.d., cid, CID, c.i., ci
Equivalence with other units of volume
One cubic inch (assuming an international inch) is equal to:
- Шаблон:Convert (1 cu ft equals 1,728 cu in)
- Roughly 1 tablespoon (1.0 U.S. gallon = 256 U.S. tablespoons = 231 cubic inches)
- About Шаблон:Convert
- About Шаблон:Convert
- About 0.06926407 American/English cups
- About Шаблон:Convert
- About Шаблон:Convert
- About Шаблон:Convert
- About Шаблон:Convert (1.0 gallon equals 231 cu in exactly [3 in × 7 in × 11 in])
- About Шаблон:Convert of crude oil (1.0 barrel equals 42 gallons, by definition, or 9,702 cu in)
- Exactly Шаблон:Convert (1.0 liter is about Шаблон:Convert)
- Exactly Шаблон:Convert or cubic centimeters (which in turn is approximately Шаблон:Convert)
- Exactly Шаблон:Convert (Шаблон:Val is about Шаблон:Convert)
Uses of the cubic inch
Electrical box volume
The cubic inch was established decades ago in the National Electrical Code as the conventional unit in North America for measuring the volume of electrical boxes. Because of the extensive export of electrical equipment to other countries, some usage of the non-SI unit can be found outside North America.
Engine displacement
North America
The cubic inch was formerly used by the automotive industry and aircraft industry in North America (through the early 1980s) to express the nominal engine displacement for the engines of new automobiles, trucks, aircraft, etc. The cubic inch is still used for this purpose in classic car collecting. The auto industry now uses liters for this purpose, while reciprocating engines used in commercial aircraft often have model numbers based on the cubic inch displacement. The fifth generation Ford Mustang has a Boss 302 version that reflects this heritage - with a five-liter (302 cubic inch) engine similar to the original Boss. Chevrolet has also revived this usage on its 427 Corvette. Dodge has a "Challenger 392" (a conversion from its 6.4 liter V8 engine).
See also
References
Шаблон:Imperial units Шаблон:United States Customary Units
