还不放心的话你看看这个:2008年纽约时报的一个新闻,翻译是自动翻译
A spokesman for Porsche North America, Tony Fouladpour, added a caveat. “If you want the car to performXSS at its maximum capability, the best choice would not be 87,” he said. “But we do not forbid it.”
Specifying premium fuel lets a car manufacturer squeeze out more horsepower. BMW, for example, recommends that all the cars it sells in the United States use premium fuel, but they will run on regular.
“There generally isn’t any harm done to the engine by using lower-octane fuel,” said a BMW spokesman, Thomas Plucinsky. “Because our engines do have very good forms of knock sensing and are able to deal with lower-octane fuels, you will not have any drivability issues. You will, however, lose some of the performance.”
How much of a loss? Some indication can be found in the peak horsepower numbers Hyundai recently released for its new Genesis sedan. On premium, the 4.6-liter V-8 engine is rated at 375 horsepower. On 87-octane regular, it is 368.
That seven-horsepower difference — less than 2 percent — seems a small penalty for saving 30 cents a gallon, especially when you can regain that performance simply by filling up with premium.
Does using lower-octane fuel reduce mileage or increase emissions, as some drivers believe? Not according to the Environmental Protection Agency. “E.P.A. fuels engineers say that there isn’t a meaningful difference between regular and premium gasoline,” said Dale Kemery, a spokesman for the agency.
保时捷北美公司的发言人托尼·福拉德普尔补充了一条警告。“如果你想让汽车发挥最大的能力,最好的选择将不是87,”他说。“但我们不禁止。”
指定优质燃料让汽车制造商挤出更多马力。例如,宝马公司建议,在美国销售的所有汽车都使用优质燃料,但它们会定期运行。
宝马公司发言人托马斯·普林斯基说:“使用低辛烷值的燃料不会对发动机造成任何损害。”“因为我们的引擎确实有非常好的敲打感应形式,并且能够处理低辛烷值燃料,所以你不会有任何驾驶问题。不过,你会失去一些表演。”
损失有多大?一些迹象可以发现,高峰马力数字现代最近发布的新成因轿车。溢价,4.6升V-8发动机的额定功率为375马力。按87辛烷值规则计算,是368。
这7马力的差距——不到2%——似乎是为节省30美分一加仑的成本而付出的小小的代价,尤其是当你只需加满溢价就可以重新获得这种性能的时候。
使用低辛烷值的燃料会减少英里数或增加排放量吗,就像一些驾驶者认为的那样?根据环境保护局的说法是不行的。该机构发言人戴尔·凯默里Dale Kemery说,“环保局的燃料工程师说,普通汽油和高级汽油之间没有明显的区别。”
这个87#是老美那边的马达法(MON)标注,大致相当于欧盟和我国使用的研究法(RON)标注的 92#。
[本回复最后由 林宝塔夫 于2018-03-20 10:43:08 编辑]