Standards that regulate minimum req

Standards that regulate minimum requirements are indispensible for communication between engine manufacturers
and fuel producers, retailers and consumers. Here too, much
has changed positively in terms of suitability and environmental compatibility. While every country formerly had its
own specifications, the standard EN 590 has been in effect
for all of Europe since 1993 [4-1] and applies to all the
countries represented in the European Committee for Standardization (CEN). However, every country may enact
(additional) individual regulations in a national appendix.
Special classes specifying flow characteristics during cold
weather with correspondingly low CFPP (cold filter plugging point) and CP (cloud point) were implemented for
arctic countries. EN 590 has largely defined every relevant
fuel parameter at a relatively high level of quality. The most
recent version from 2008 is currently undergoing the process of adoption (Table 4-4). Section 4.1.8 outlines the
individual parameters.
Regular revision of the standards and the test methods
applied guarantees the inclusion of new or modified criteria for requirements. For instance, wear protection (lubricity)
and limits on polyaromatics have been newly incorporated
in recent years.
The test methods applied in the standard and to ongoing
quality control are also based on standardized laboratory
methods. By performing extensive tests in complete engines
for example, working groups from the engine and petroleum
industry and independent institutes ensure that the standardized methods are relevant to the application of fuel in
vehicles.