挪威的壳牌公司(Shell)研制出一种使发动机性能更佳的忾油添加剂。这种添加剂含有聚合物型的钾化合物,能促使更多的电子能量进入点火,以提高燃烧温度,并可除去内壁沉淀,减少燃料消耗和排气中的热量散发。它能使排出的一氧化碳减少26％。英国Shell化学公司将生产基本的化学物质;法国的Shell化学公司将这些化学物质掺合在一起制成添加剂,英国的Shell公司再将添加剂稀释并与汽油相混合。该公司每年将配置这种含稀释添加剂的汽油60亿吨。(出处同上) Shell, the Norwegian company, has developed a grease additive to make the engine better. This additive contains a polymeric potassium compound that encourages more electron energy into the ignition to increase the temperature of the combustion and remove the inner wall deposits and reduce fuel consumption and heat dissipation in the exhaust gas. It reduces the amount of carbon monoxide emitted by 26%. Shell Chemical Company of the United Kingdom will produce basic chemicals; France’s Shell Chemical will blend these chemicals to make additives, and Shell in the UK will then dilute the additive and mix it with gasoline. The company will allocate 6 billion tons of gasoline with diluted additives each year. (Ibid.)