octane enhancer造句

• Methanex is the world's largest producer of methanol, a prime component in the production of MTBE, a gasoline octane enhancer.
• But Merrill Lynch's Hardiman noted that MMT is substantially cheaper than other octane enhancers used to avoid that unpleasant pinging sound called engine knock.
• In addition to being used as octane enhancers, ethanol and MTBE are used to increase oxygen in fuel, to make it burn more cleanly.
• Refiners are attracted to MMT because it is often roughly half as expensive to use as existing octane enhancers, which make gasoline burn more smoothly.
• MMT was first used as an octane enhancer in leaded gasoline, but was banned in 1977 under a federal rule intended to insure that additives not adversely affect catalytic converters.
• Billed as an " octane enhancer " that increases the power of fuel, MMT has been added to automobile fuel sold in the United States and Canada since the mid-1970s, when use of lead additives was restricted in both countries.
• Environmental groups compare the potential risks to the dangers now associated with tetraethyl lead, a compound containing lead that was the predominant octane enhancer until it was phased out, beginning in 1979, because of its adverse affect on catalytic converters and for health reasons.