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Bringing clarity to diesel filters

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article image HYDAC’s new Diesel PreCare filter
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HYDAC has released a new pre-filtration system, the Diesel PreCare, designed to ensure the smooth operation of diesel engines while minimising damage from contamination and water. The HYDAC Diesel PreCare filter is based on a two-stage water separation concept that delivers excellent filtration performance.

Several legislations have been introduced to minimise emissions and environmental pollution from vehicles. To achieve these stringent requirements, vehicle manufacturers have adopted design changes that are making components more sensitive to contamination and water in the fuel.

Use of inferior filters in such vehicles can cause serious damage from contamination, culminating in engine failure, while water in the diesel can cause corrosion in the system. Vehicles running on biodiesel are susceptible to the ‘diesel bug’, which refers to a sludge consisting of microorganisms blocking the fuel filter or the injection nozzles, resulting in heavy corrosion building up on fuel tank walls and in the fuel lines.

HYDAC’s new Diesel PreCare filter is based on a two-stage concept for water removal to guarantee smooth operation of diesel engines.

The first stage consists of an all-synthetic filter medium in which fine water droplets combine to form larger ones while particles are filtered out. The all-synthetic filter media has significantly smaller diameter fibres than the usual cellulose materials, achieving very high filtration efficiency with low pressure drop.

The real phase separation between water and diesel fuel takes place in the second stage at the hydrophobic barrier layer. The water droplets drip off the hydrophobic material and trickle downwards due to their higher density. The separated water collects in a trap and can be discharged either manually or automatically. Since the water separation occurs on the clean side, the barrier layer cannot become contaminated and the water separation efficiency remains consistently high throughout the entire service life of the filter element.

In the event the filter elements become clogged, only the elements have to be changed, unlike conventional spin-on cartridges. The filter elements are also completely incinerable.

HYDAC PreCare diesel filters protect sensitive fuel components in the engine from damage by means of effective filtration. The highly efficient filters prevent failure in expensive high pressure pumps and injection systems, reducing costly service work as well as lifecycle costs of the vehicle.

HYDAC‘s range offers perfectly matched pre-filters and main filters. The efficient filtration and water separation capabilities protect the engine as well as the environment.

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