美国工程师研制成真正的稀薄燃烧汽油机。其性能取决于一种新型的气态吸(喷射)油系统,该系统使汽油在与冷的主空气充量混合而进入燃烧室之前被来自汽油机的热量气化。该系统性能的奥妙在于燃油实际上是被气化,而不仅是被破碎成液态微滴。该系统的发明者南安普顿的杰弗里·韦斯特说,不论燃油喷射系统多么先进,喷出的油滴多么微小,终不能使油滴变成油气。对一台日产 American engineers developed a real lean burn gasoline engine. Its performance depends on a new type of gaseous suction (injection) oil system that allows gas to be gasified by heat from a gasoline engine before being mixed with a cold main charge of air into the combustion chamber. The secret of this system’s performance is that the fuel is actually gasified, not just broken into liquid droplets. Jeffrey West, Southampton, inventor of the system, said no matter how advanced the fuel injection system is, the tiny drops of oil they spray can not turn oil droplets into oil and gas. To a Nissan