柴油品质的两种实际感受

catstone

国内柴油的品质差，是大家都认可的。直观上讲，带有一种褐黄色。要求使用前，必须有72小时以上的沉淀。由于柴油的品质所影响的方面很多，例如，加剧柴油机的磨损，减少使用寿命。与欧3、欧4高性能发动机推广使用不匹配。

本人90年代在国外工作时，看到的柴油几乎都是透明的颜色，在强阳光照射下，朦胧一点微蓝。总之，是很洁净的，而且只一个标号。汽油则是红色，添加剂的缘故。因此，有一个老乡误将柴油当作汽油加到巡洋舰车里，一发动，车后一团很浓的白烟。难为一个泰国技师搞了半天都没有弄明白是什么故障。

各位同仁，如何提高油品质量，也是国人需要下工夫的，不光是发动机。

seven3437

国内柴油s含量高，发动机烧起来排放不好，对后处理系统也有损害
16烷值也不高

羡慕楼主，很早就到国外工作了，一定是一段精彩的经历吧

jianghe0000

来这里学习以下，感谢主楼的分享汽车知识

outcom

Fuels for Diesel Engines - Joint FIE Manufacturers Statement, issued June 2000 Page 1 of 2
Fuels for Diesel Engines
Diesel Fuel Injection Equipment Manufacturers
Common Position Statement
The continual world-wide pressure to reduce engine emissions has necessitated the development of radically improved forms of diesel fuel injection equipment capable of meeting the developing legislation targets. Diesel fuel producers have had to develop improved fuels with, for example, reduced sulfur and aromatic content and increased cetane number to meet these requirements.Together the diesel fuel injection manufacturers and the diesel fuel industry have developed products that are mutually compatible, will perform to their intended standard as originally fitted and continue to achieve this performance through out the useful life of the equipment. As a consequence of this joint effort, new international Standards have been established for diesel fuels that provide the required characteristics for achieving and maintaining the necessary engine
emissions performance. Fuel parameters such as cetane number, viscosity, density, lubricity ,sulphur and aromatic content together with the absence of additional free water and dirtcontamination are key to good emissions performance of equipment in the field. The European fuel Standard EN590 embodies the latest fuel features, an essential part being the inclusion of the lubricity requirement. The avoidance of contamination of fuel by water and dirt is the responsibility of both the fuel supplier and the user.
Fuel injection equipment manufacturers will be unable to guarantee that their products will meet the intended life time performance and emissions targets, unless fuel with similar properties to those recently developed in line with the latest EN590 specification is available for all markets. The responsibility therefore must fall to the equipment user and/or the fuel supplier to ensure that the uels used are compatible with the objectives of the emissions legislation.Demands are now being made for engines in all markets to improve emissions performance. Some of these markets are subject to a wide variation in fuel quality. The responsibility for the maintenance and development of these fuel Standards is different for each of the product markets and end uses,
e.g., agricultural, military, aviation, power generation, heating equipment, etc. Standards recently developed for some low emissions on-highway fuels including values for, sulphur and aromatic content, density and cetane number should apply to other market diesel fuels. It is essential that the lubricity requirement as specified in ISO 12156-2 is achieved.Users of diesel engines are reminded that fuel Standards apply to the fuel only to the point of delivery from the distribution network. From this point on it is the user’s responsibility to protect the fuel from free water and dirt contamination to enable engines to achieve their designed performance, emission,
and durability targets. Engine/vehicle manufacturers should incorporate appropriate fuel conditioning
apparatus for the application, duty cycle, territory, and climate.
Alternative liquid fuels are becoming increasingly available to end users. Some manufacturers have
provided compatible components for use with these fuels, however users should be aware that the
vehicles, engines and equipment were not designed to run on them and are recommended to refer to
the equipment manufacturers 'Limitations of Use' documents for guidance prior to using such fuels.
Fuel injection equipment manufacturers cannot guarantee their products against performance or
emissions failures if inappropriate fuels have been used. Any evidence that the product has fallen
short of the required level of performance directly due to the use of non acceptable fuels will render
the manufacturers’ guarantee null and void.