Modern engines with their very high injection pressures are a challenge for commercial vehicle diesel fuel filters. Protecting the complex, diesel-carrying components such as the high-pressure pump and injectors from abrasive wear means increased requirements when it comes to particle filtration, for example. The latest generation of fuel filters effectively protects these modern injection systems from contamination and wear by absorbing even the tiniest of particles. This significantly increases the service life of the components in the system, thus avoiding downtime.

High Separation Efficiency Thanks to the New MULTIGRADE F-MB 2000 Filter Medium
Based on the proven MULTIGRADE F-MB 333 fuel filter medium, which has established itself as the standard for highly efficient filters in the commercial vehicle sector in recent years, the experts at leading global filtration specialist MANN+HUMMEL have developed a new filter medium, the MULTIGRADE F-MB 2000, which offers separation efficiency of 99.95 percent down to a particle size of four micrometers. For comparison: These particles are up to 18 times smaller than the width of a human hair. This new filter medium is used in the MANN-FILTER WK 11 051 fuel filter and ensures that 9,995 out of 10,000 streaming particles are retained.

Multi-layer Filter Medium
This excellent ability to separate out even the tiniest of particles is achieved thanks to the filter medium's three-layer structure. The first layer is made from synthetic fibers and retains large particles to protect the subsequent layers and therefore ensure a long service life for the filter. The middle layer ensures the separation of fine particles down to a few micrometers in size through the use of glass fibers embedded in a cellulose matrix. The downstream, pure cellulose layer stabilizes the complex media structure and retains the last particles so that the injection system is supplied with fuel that has been optimally cleaned.

MANN+HUMMEL has already started series production of this highly efficient fuel filter for various vehicle manufacturers. In the independent aftermarket, the MANN-FILTER WK 11 051 is available for Renault Trucks and for Volvo Bus and Trucks. Its seal materials are resistant to, tested with, and ideally suited for standard diesel and biodiesel variants as well as new synthetic diesel fuels such as HVO. They have the relevant OE approvals, and ensure a permanent hold and a complete seal of the filter. HVO (Hydrogenated Vegetable Oils) is a synthetic diesel that is produced by a catalytic reaction of vegetable oils or animal fats with hydrogen (hydrogenation) and is already used as a blending component in standard diesel or even in its pure form in some countries.

Protection Without Wear
To give the fuel filter even better protection against corrosion, a hot-dip aluminized coating is used instead of the conventional zinc coating on some metal components. This improves chemical resistance, especially to biodiesel fuels, and protects against the formation of deposits as well as increased wear on the injectors of the injection system.

To keep commercial vehicles running reliably and efficiently over a long period, fuel filters should be changed regularly at the intervals specified by the vehicle manufacturer.