DICTIONARY OF AUTOMOTIVE TERMS - "Cf"

CF
  1. Acronym for the distance from the back of a truck's cab to the end of its frame. Also CE or LP are used for the same distance.
  2. CF

    API CF category

    An API classification for indirect-injected diesel engine service and other diesel engines that use a broad range of fuel types, including those using fuel with high sulfur content; for example, over 0.5% wt. Effective control of piston deposits, wear and copper-containing bearing corrosion is essential for these engines, which may be naturally aspirated, turbocharged or supercharged. Oils designated for this service have been in existence since 1994 and replaces API Service Category CD.

CF-2
CF-2

API CF-2 category

An API classification for Diesel engine oil for severe-duty two-stroke cycle diesel engines requiring highly effective control over cylinder and ring-face scuffing and deposits. Oils designed for this service have been in existence since 1994 and may be used when API Service Category CD-II is recommended. These oils do not necessarily meet the requirements of API CF or CF-4 unless they pass the test requirements for these categories.

CF-4
CF-4

API CF-4 category

An API classification for Diesel engine oil for high speed, four-stroke cycle diesel engines. Introduced in 1990, API CF-4 oils exceed the requirements for the API CE category, providing improved control of oil consumption and piston deposits. These oils should be used in place of API CE oils. They are particularly suited for on-highway, heavy-duty truck applications. When combined with the appropriate S category, they can also be used in gasoline and diesel powered personal vehicles i.e., passenger cars, light trucks and vans when recommended by the vehicle or engine manufacturer. Replaced by CI-4.

CFC
  1. Acronym for Chlorofluorocarbon.
  2. Acronym for coasting fuel cut
CFC gases
Chlorofluorocarbon gases.
CFFP
Acronym for Clean Fuel Fleet Program
CFI
  1. Acronym for Central fuel injection. A Ford fuel injection system that uses an injector mounted throttle body assembly
  2. Acronym for Continuous Fuel Injection
CFM
Acronym for Cubic Feet per Minute. This is the rating of the Volume of air moved.
CFPP
Acronym for Cold Filter Plugging Point
CFR
Acronym for Cooperative Fuel Research Engine A single cylinder, overhead valve, variable compression ratio engine used for measuring octane or cetane quality.
CFR Diesel fuel testing unit
A standard engine employed in making Cetane number tests of diesel engine fuels.
cfs
Acronym for Cubic feet per second -- a measurement of the flow of liquid, esp. gasoline.
CFV
  1. Acronym for clean-fuel vehicle
  2. Acronym for Critical Flow Venturi