How to extend the long-term stability of your fuels and ensure the reliable operation of emergency power systems

Fuel cleaning and tank care for emergency power systems: CJC® Fluid Care Systems for heating oil and diesel

Fuel cleaning and tank care are a MUST if …

  • You are annoyed because you have to dispose of your fuel from the storage and day tanks every few months or years.

  • you are dissatisfied because diesel plague and deposits require expensive rinsing and cleaning work.

  • you want to minimize unplanned disruptions and failures to ensure the highest possible operational reliability.

The solution for emergency power systems: a CJC® Fluid Care System for fuel cleaning and tank care. Achieve the highest fuel purity for maximum service life — quickly, efficiently and cost-effectively.

Your challenge: contaminated fuel

During the months or even years of storage in the storage tanks, the quality of the fuel continuously deteriorates. Impurities such as particles and water enter the tank from the outside, e. g. via leaks, leaks, condensation and tank ventilation. Even the fuel itself often does not correspond to the desired cleanliness, e. g. because there is a high risk of dirt entry during transport and transfer to your tank or the specified fuel cleanliness is unavailable on short notice in an emergency. But also oxidation and additive depletion accelerated by the impurities shorten the storage time prematurely and lead to severe consequences for the tank and emergency power system.

Damage caused by contaminated fuel

Water in the fuel is the perfect food source for microorganisms (bacteria, fungi and yeasts), which spread more frequently. Microorganisms produce sludge-like biomass in the tank and lead to microbial corrosion. If you use such contaminated fuel in your engine, the fuel system, valves, injection nozzles, and in-filter will promptly clog. Intensive rinsing, cleaning and maintenance work under increased health risks (microorganisms, acids, foul odour) is the result.

Free and emulsified water in the diesel as well as metal particles – especially copper, iron, aluminium and tin – accelerate oxidative processes and additive degradation, resulting in the formation of organic acids (carboxylic acids, sulfuric acids). Acids have a highly corrosive effect. The effect is intensified by water. Since water is highly polar, it attracts polar additives (e. g. detergents, dispersants) and impurities. Therefore, as soon as emulsified and free water is present, a sludge-like mass is formed, which sediments at the bottom of the tank and enters the engine when the fuel is used. Clogged in-line filters, valves and injection nozzles are the results.

When using fuel mixtures with biodiesel components, there is a risk that the oxidation stability will be used up after just a few months. The following polymerization reactions lead to the formation of polymer gum, which clogs pumps and injectors. For this reason, operators usually use low-sulfur heating oil with an advanced additive package and high oxidation stability. However, this special fuel is often unavailable for short-term needs, so that fuel is used, containing up to 7% biodiesel.

Water in the fuel and acids caused by oxidation and microorganisms cause corrosion and rust on the metal surfaces in the tank and fuel system (e. g. injection nozzles). Sharp-edged surfaces are created from which rust particles break off. When they circulate, they have a highly abrasive effect on surfaces, damage moving components and block nozzles and pipes. In addition, hydrogen embrittlement can occur with hydrogen-induced cracking in the metal surfaces.

Water droplets in the diesel evaporate and implode in fuel pumps under high pressure. As the temperature rises, the risk of vapour bubble formation increases exponentially. If the water vapour bubbles implode near metal surfaces, erosion-like material removal and micro-pitting occur. Cavitation can also occur in injection nozzles due to the high fluid velocity.

Abrasive metal and corrosion particles, as well as, sludge-like reaction products (microorganisms, oxidation) in the fuel, lead to wear and deposits on the metal surfaces, nozzles and moving parts in the engine

With contaminated fuel, you frequently have to change the fuel filters in the main in-line flow. This is due to the low filter capacity of these filters. Bio sludge, dirt and, if necessary, polymer gum (in the case of biodiesel mixtures) clog the in-line filters prematurely.

Wear and damage in the injection system and combustion chamber impair the combustion and can cause that fuel enters into the engine lubricating oil (blow-by gases, spray image problem injectors, leaks). Poorer engine performance, higher emissions and reduced engine lubrication are the consequences.

Common rail systems require the highest fuel cleanliness

In common rail systems, the injection timing and fuel quantity are calculated cylinder-by-cylinder and injected via fast-switching solenoid valves (injectors) to achieve improved engine performance as well as lower fuel consumption and emissions. The size of the nozzles of the injectors in common rail diesel systems is 2 – 4 microns (μm) and enables precise injection. They operate at a pressure of up to 3,000 bar. Typically, a 5-micron filter is integrated. The diesel for these systems must be up to 30 times cleaner than for standard injection systems. Due to the high pressures and tight tolerances, impurities have serious consequences.

The conventional method: disposing of fuel

To ensure the reliable start and operation of the emergency power system, operators regularly check the fuel quality. When the critical state is reached, they replace the stocks and dispose of them. The high fuel consumption is accepted, as the uninterruptible power supply must be guaranteed, and failures are more cost-intensive than the fuel. With us, however, this is more ecological and economical.

Your solution: efficient fuel cleaning

For efficient fuel cleaning, particles, water, microorganisms, oxidation products and acids must be continuously removed from the fuel (24/7). Because only with permanently clean and dry fuel you …

  • maximize the long-term stability of your fuel supplies and thus conserve budget and resources.

  • protect tank and fuel system optimally against wear, cavitation, corrosion and diesel plague.

  • ensure reliable, trouble-free start-up and operation of the emergency power system.

  • protect the fuel filter in the in-line flow so that it clogs less frequently and requires fewer filter changes.

  • ensure efficient combustion and thus improve engine efficiency and engine oil service life.

fuel cleaning, lower fuel consumption, emergency power systems

Less fuel consumption

fuel cleaning, less maintenance, emergency power systems

Less maintenance

fuel cleaning, better engine efficiency, emergency power supply systems

Better engine efficiency

fuel cleaning, better resource protection, emergency power supply systems

Higher resource protection

CJC® Fluid Care Systems for the efficient fuel cleaning

Efficiently remove and protect particles, water, microorganisms, oxidation residues and acids? CJC® Fluid Care Systems for fuel cleaning and tank care ensure maximum fuel cleanliness. Achieve the highest level of protection for your fuel reserves, tanks and emergency power systems quickly, long-lasting and cost-effectively.

The filter pump allows installation in a separate circuit and thus continuous depth filtration and maintenance of the fuel (24/7).

The CJC® Fluid Care System removes all impurities:


Achieve cleanliness classes up to ISO 12 (ISO 4406).

Water – free, emulsified and dissolved

100% drying of fuel (confirmed by engine manufacturer MTU)


Prevent the spread of microorganisms with dry fuel and efficiently remove existing microorganisms thanks to high filter fineness and depth filtration.

Oxidation residues and acids

prevent, remove and neutralize.

The modular design makes CJC® Fluid Care Systems optimally adaptable to the different tank sizes and conditions.

CJC® Fine Filter Inserts are depth filters that even remove microorganisms with a filtration degree of 3 μm absolute and a retention rate of up to < 1 μm. The volume corpus made of finely ramified fibres offers an outer surface, and in addition, an inner surface — from 120 to 150 m² per gram — and thus enables the enormously high dirt holding capacity and thus filter service life. Fine particles migrate to the depth of the filter material; water and oxidation residues are retained in and to the fibres by means of absorption and adsorption.

The fact is that our dirt holding capacities are market leaders.

CJC® Fine Filter Inserts are easy to dispose of and comply with the circular economy law – 0% plastic, 0% metals.

CJC® Fluid Care Systems are equipped with sensors for online monitoring of the filter status (filter pressure). Fuel sensors for relative humidity, temperature and oxidation rate are modular implementable. You can configure alert limits and warnings to prematurely detect deviations from normal conditions and counteract them. Ideal for particularly critical emergency power systems, e. g. of hospitals and data centers.

CJC® Fluid Care Systems for efficient fuel cleaning and tank care

fluid care system for fuel cleaning and tank care

Write or call your regional contact person now

Let’s talk about your tank care and storage challenges or your fuels. We filter every fuel, whether heating oil, fuel mixtures or diesel with biodiesel content, and maximise the long-term stability of your fuels and the wear protection of your emergency power systems.

Receive a personal consultation and a non-binding offer about a CJC® Fluid Care System for efficient fuel cleaning.

Write or call us.

oil samples beforehand, fluid care and filtration in hydrostatic systems
oil samples beforehand, fluid care and filtration in hydrostatic systems
oil samples beforehand, fluid care and filtration in hydrostatic systems