Methyl tert-butyl etherMethyl tert-butyl ether (MTBE), also known as methyl tert-butyl ether and tert-butyl methyl ether, is an organic compound with a structural formula (CH3)3COCH3. MTBE is a volatile, flammable, and colorless liquid that is sparingly soluble in water. Primarily used as a fuel additive, MTBE is blended into gasoline to increase its octane rating and knock resistance, and reduce unwanted emissions. MTBE is manufactured via the chemical reaction of methanol and isobutylene.
PetrobrasPetróleo Brasileiro S.A., better known by the portmanteau Petrobras (ˌpɛtɾoˈbɾas, pet-), is a state-owned Brazilian multinational corporation in the petroleum industry headquartered in Rio de Janeiro, Brazil. The company's name translates to Brazilian Petroleum Corporation — Petrobras. The company was ranked #181 in the most recent Fortune Global 500 list. In the 2020 Forbes Global 2000, Petrobras was ranked as the 65th-largest public company in the world.
IsopentaneIsopentane, also called methylbutane or 2-methylbutane, is a branched-chain saturated hydrocarbon (an alkane) with five carbon atoms, with formula C5H12 or CH(CH3)2(C2H5). Isopentane is a volatile and flammable liquid. It is one of three structural isomers with the molecular formula C5H12, the others being pentane (n-pentane) and neopentane (dimethyl propane). Isopentane is commonly used in conjunction with liquid nitrogen to achieve a liquid bath temperature of −160 °C.
Cetane numberCetane number (cetane rating) is an indicator of the combustion speed of diesel fuel and compression needed for ignition. It plays a similar role for diesel as octane rating does for gasoline. The CN is an important factor in determining the quality of diesel fuel, but not the only one; other measurements of diesel fuel's quality include (but are not limited to) energy content, density, lubricity, cold-flow properties and sulphur content. The cetane number (or CN) of a fuel is defined by finding a blend of cetane and isocetane with the same ignition delay.
RefineryA refinery is a production facility composed of a group of chemical engineering unit processes and unit operations refining certain materials or converting raw material into products of value.
Fuel injectionFuel injection is the introduction of fuel in an internal combustion engine, most commonly automotive engines, by the means of an injector. This article focuses on fuel injection in reciprocating piston and Wankel rotary engines. All compression-ignition engines (e.g. diesel engines), and many spark-ignition engines (i.e. petrol (gasoline) engines, such as Otto or Wankel), use fuel injection of one kind or another.
